Multi-component cement concrete for building and production process thereof

Abstract

The invention relates to the field of building materials, in particular to multi-component cement concrete for buildings and a production process of the multi-component cement concrete, and aims to solve the problems that existing multi-component cement concrete is low in mechanical strength and prone to permeation of water and harmful substances. According to the multi-component cement concrete, through reasonable formula design, it is ensured that the potential of materials can be fully exerted in the pouring and curing process of the concrete, the mechanical strength of the finally formed concrete structure is remarkably enhanced, meanwhile, the concrete structure has excellent waterproof and anti-seepage performance, the crack occurrence probability is reduced, the service life is prolonged, and in addition, the production cost is reduced by optimizing the production process. The multi-component cement concrete has better flowability and workability in the construction process, the construction difficulty is reduced, the construction efficiency is improved, and the multi-component cement concrete has important significance in improving the building quality.

Description

Technical Field

[0001] The invention relates to the field of building materials, and in particular to a multi-component cement concrete for building and a production process thereof. Background Art

[0002] As an important building material, cement concrete is widely used in construction projects. However, traditional single-component cement concrete has many shortcomings, such as slow strength development, poor durability, and difficulty in mold release. In order to meet the needs of higher performance and more flexible application, the development of multi-component cement concrete has become an important research direction. Despite the continuous development of multi-component cement concrete technology, the current multi-component cement concrete has low mechanical strength and is susceptible to penetration by moisture and harmful substances during long-term use, resulting in cracking and decreased strength of cement concrete after erosion and damage, affecting the safety and service life of buildings, and making it difficult to meet the needs of construction projects. Therefore, it is of great significance to develop a multi-component cement concrete and its production process for construction. Summary of the invention

[0003] In order to overcome the above technical problems, the purpose of the present invention is to provide a multi-component cement concrete for construction and a production process thereof, which solves the problem that the existing multi-component cement concrete has low mechanical strength and is easily penetrated by moisture and harmful substances. The purpose of the present invention can be achieved by the following technical solutions: A multi-component cement concrete for construction, comprising the following components in parts by weight: 260-300 parts of cement, 850-950 parts of crushed stone, 30-50 parts of concrete modifier, 15-35 parts of concrete modified filler, 60-90 parts of fly ash, 40-50 parts of slag powder, 8-10 parts of diluent, 2.8-5.6 parts of diethylenetriamine, 1.2-3.8 parts of water reducer, 1-2 parts of defoamer and 150-180 parts of water; Wherein, the concrete modifier is prepared by the following steps: Step a1: add hydroquinone, sodium hydroxide and anhydrous ethanol to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a constant pressure dropping funnel, introduce nitrogen protection, stir and react for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then add 3-bromo-1-propylene dropwise while stirring, and control the dropping rate to 1-2 drops / s. After the dropwise addition is completed, continue to stir and react for 2-3 hours under the condition of heating to 55-60°C, then cool to room temperature, remove the solvent by rotary evaporation, then add ethylene glycol and rearrange the reaction at 190-220°C for 3-4 hours. After the reaction, cool the reaction product to room temperature, then add it to a hydrochloric acid solution, then let it stand to precipitate, then centrifuge it, place the precipitate in a vacuum drying oven, and dry it at a temperature of 50-55°C for 2-3 hours to obtain an intermediate product 1; Step a2: add the intermediate product 1, epichlorohydrin and benzyltriethylammonium chloride to a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, stir and react for 5-10 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then heat to 110-115°C and continue stirring and reacting for 2-3 hours, then add sodium hydroxide solution dropwise while stirring, control the dropping rate to 1-2 drops / s, continue stirring and reacting for 2-3 hours after the dropwise addition is completed, and after the reaction is completed, cool the reaction product to room temperature, then place it in a vacuum drying oven, and dry it at a temperature of 60-65°C for 6-8 hours to obtain an intermediate product 2; Step a3: octamethylcyclotetrasiloxane, trifluoropropylmethylcyclotrisiloxane and tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred and reacted for 20-30 minutes at a temperature of 25-30° C. and a stirring rate of 300-400 r / min. Trifluoromethanesulfonic acid is then added and stirred for 5-10 minutes. The mixture is then heated to 75-80° C. and stirred for 8-10 hours. After the reaction is completed, the reaction product is cooled to room temperature, added to n-heptane, dried with anhydrous magnesium sulfate, and then vacuum filtered. The filtrate is rotary evaporated to remove the solvent, and then distilled at a temperature of 160-165° C. for 20-30 minutes to remove small molecular low-boiling substances to obtain intermediate 3; Step a4: add intermediate product 2, intermediate product 3, chloroplatinic acid and isopropanol into a three-necked flask equipped with a stirrer, a thermometer and an air duct, introduce nitrogen protection, stir and react for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then raise the temperature to 85-90°C and continue stirring and reacting for 3-5 hours. After the reaction is completed, cool the reaction product to room temperature, then rotary evaporate to remove the solvent, and obtain a concrete modifier. As a further solution of the present invention: the dosage ratio of the hydroquinone, sodium hydroxide, anhydrous ethanol, 3-bromo-1-propylene and ethylene glycol in step a1 is 10 mmol: 10 mmol: 30-40 mL: 11-12 mmol: 30-40 mL; the mass fraction of the hydrochloric acid solution is 8-10%. As a further solution of the present invention: the usage ratio of the intermediate product 1, epichlorohydrin, benzyltriethylammonium chloride and sodium hydroxide solution in step a2 is 10g:35-45g:0.35-0.45g:15-20mL; the mass fraction of the sodium hydroxide solution is 20-25%. As a further solution of the present invention: the usage ratio of the octamethylcyclotetrasiloxane, trifluoropropylmethylcyclotrisiloxane, tetramethyldisiloxane and trifluoromethanesulfonic acid in step a3 is 8-10 g: 5-9 g: 0.5-1.5 g: 0.2-0.3 mL. As a further solution of the present invention: the usage ratio of the intermediate product 2, the intermediate product 3, chloroplatinic acid and isopropanol in step a4 is 8-16g:5g:0.02-0.04g:30-40mL. As a further solution of the present invention: the concrete modified filler is prepared by the following steps: The basalt fiber is soaked in a sodium hydroxide solution for 1-2 hours, and then the soaked basalt fiber, anhydrous ethanol and deionized water are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The reaction is stirred for 30-50 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min. Then, silane coupling agent KH-560 is added and the stirring reaction is continued for 20-30 minutes. Then, the temperature is raised to 85-90°C and the stirring reaction is continued for 3-5 hours. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is placed in a vacuum drying oven and dried at a temperature of 50-55°C for 2-3 hours to obtain a concrete modified filler. As a further solution of the present invention: the usage ratio of the basalt fiber, anhydrous ethanol, deionized water and silane coupling agent KH-560 is 5g: 60-70mL: 20-25mL: 1.2-3.6g; the mass fraction of the sodium hydroxide solution is 10-15%. As a further solution of the present invention: a production process of multi-component cement concrete for construction, comprising the following steps: Step 1: weigh 260-300 parts of cement, 850-950 parts of crushed stone, 30-50 parts of concrete modifier, 15-35 parts of concrete modified filler, 60-90 parts of fly ash, 40-50 parts of slag powder, 8-10 parts of diluent, 2.8-5.6 parts of diethylenetriamine, 1.2-3.8 parts of water reducer, 1-2 parts of defoamer and 150-180 parts of water according to weight parts, and set aside; Step 2: Evenly mix cement, crushed stone, concrete modifier, concrete modified filler, fly ash, slag powder and diluent to obtain a mixture; Step 3: Evenly mix diethylenetriamine, water reducing agent, defoaming agent and water to obtain a mixed solution; Step 4: Add the mixed liquid to the mixed material and stir evenly to obtain mortar; Step 5: Cast and shape the mortar, and perform curing to obtain multi-component cement concrete for construction. As a further solution of the present invention: the cement is PO 42.5 type cement. As a further solution of the present invention: the crushed stone has a particle size of 4.75-9.5 mm. As a further solution of the present invention: the diluent is an AGE diluent. As a further solution of the present invention: the water reducer is SPF-300 polycarboxylic acid high performance water reducer. As a further solution of the present invention: the defoamer is DU-369 polyether-modified silicone defoamer. Beneficial effects of the present invention: The invention discloses a multi-component cement concrete for construction and a production process thereof. The invention comprises the following steps: uniformly mixing cement, crushed stone, concrete modifier, concrete modified filler, fly ash, slag powder and diluent to obtain a mixture; uniformly mixing diethylenetriamine, a water reducing agent, a defoaming agent and water to obtain a mixed solution; adding the mixed solution into the mixture and stirring evenly to obtain mortar; casting and curing the mortar to obtain the multi-component cement concrete for construction. The multi-component cement concrete ensures that the potential of the material can be fully exerted during the casting and curing process of the concrete through reasonable formula design. The finally formed concrete structure not only has significantly enhanced mechanical strength, but also has excellent waterproof and anti-seepage performance, reduces the probability of cracks, and prolongs the service life. In addition, by optimizing the production process, the multi-component cement concrete exhibits better fluidity and workability during the construction process, which not only reduces the construction difficulty, but also improves the construction efficiency. The multi-component cement concrete is particularly suitable for complex structures and large-scale construction projects. Moreover, the production process is not only of great significance for improving the quality of buildings, but also actively responds to the international trend of green buildings and sustainable development, and meets the requirements of energy conservation, emission reduction and environmental protection. In the process of preparing multi-component cement concrete for construction, a concrete modifier is first prepared. First, hydroquinone and 3-bromo-1-propylene are reacted. A hydroxyl group on the hydroquinone reacts with a bromine atom on the 3-bromo-1-propylene. Then, through a Claisen rearrangement reaction, the alkenyl group is connected to the benzene ring of the hydroquinone to obtain an intermediate product 1. Then, the intermediate product 1 is reacted with epichlorohydrin. After the epoxy group on the epichlorohydrin is ring-opened and ring-closed, the epoxy group is connected to the intermediate product 1 to obtain an intermediate product 2. Then, octamethylcyclotetrasiloxane, trifluoropropylmethylcyclotrisiloxane, and tetramethyldisiloxane are used as raw materials for polymerization to form a terminal hydrogen polysiloxane containing fluorine atoms to obtain an intermediate product 3. Finally, the intermediate product 2 and the intermediate product 3 are reacted. The S on the intermediate product 2 iH undergoes a silylation reaction with the olefinic group on the intermediate product 3 to obtain a concrete modifier; the concrete modifier can penetrate into the pores of the cement concrete matrix, react with the cement hydration product, form a tight network structure, improve the bonding strength and integrity of the concrete, and improve the toughness of the concrete. When the concrete is impacted or vibrated, the concrete modifier can absorb more energy and slow down the propagation of stress, thereby improving the impact resistance and fatigue resistance of the concrete. Moreover, the large number of silicon atoms and fluorine atoms on the concrete modifier give it excellent hydrophobic properties, and can form a dense protective film on the surface of the concrete, which can effectively block the penetration of moisture and harmful substances, prevent erosion and damage caused by moisture penetration, and improve the water resistance and durability of the concrete. In the process of preparing multi-component cement concrete for construction, a concrete modified filler is also prepared. Basalt fiber is modified by silane coupling agent KH-560. The siloxane on the silane coupling agent KH-560 is hydrolyzed to form silanol, which can be grafted to the surface of the basalt fiber. At the same time, a large number of epoxy groups are introduced to obtain a concrete modified filler. The modified basalt fiber can be distributed in the cement concrete matrix in the form of chemical bonds, which enhances the physical and chemical bonding between the fiber and the cement concrete matrix, thereby effectively reducing microcracks and peeling at the interface. This enhanced interfacial bonding force enables the fiber to more effectively transfer and disperse stress, improves the overall mechanical properties of concrete, and when the concrete is subjected to external force, the concrete modified filler will absorb part of the energy and deform, thereby alleviating stress concentration, reducing the risk of concrete cracking, improving the tensile strength and toughness of concrete, and reducing the generation and expansion of cracks. In summary, with the synergistic cooperation of concrete modifiers and concrete modified fillers, they work together to significantly improve the mechanical strength, waterproof performance and durability of cement concrete. DETAILED DESCRIPTION The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1: This embodiment is a production process of multi-component cement concrete for construction, comprising the following steps: Step S1: 10 mmol of hydroquinone, 10 mmol of sodium hydroxide and 30 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a constant pressure dropping funnel, and nitrogen is introduced for protection. The mixture is stirred and reacted for 20 minutes at a temperature of 25° C. and a stirring rate of 300 r / min. Then, 11 mmol of 3-bromo-1-propylene is added dropwise while stirring, and the dropping rate is controlled to be 1 drop / s. After the dropwise addition is completed, the mixture is heated to 55° C. and the stirring reaction is continued for 2 hours. The mixture is then cooled to room temperature and the solvent is removed by rotary evaporation. Then, 30 mL of ethylene glycol is added and the mixture is heated to 190° C. and rearranged for 3 hours. After the reaction is completed, the reaction product is cooled to room temperature and then added to a hydrochloric acid solution with a mass fraction of 8%. The mixture is then allowed to stand to precipitate, and then centrifuged. The precipitate is placed in a vacuum drying oven and dried at 50° C. for 2 hours to obtain an intermediate product 1. Step S2: 10 g of the intermediate product 1, 35 g of epichlorohydrin and 0.35 g of benzyltriethylammonium chloride were added to a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, and the mixture was stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 5 min, and then the mixture was heated to 110° C. and the stirring reaction was continued for 2 h, and then 15 mL of a 20% sodium hydroxide solution by mass was added dropwise while stirring, and the dropping rate was controlled to be 1 drop / s. After the dropwise addition was completed, the stirring reaction was continued for 2 h. After the reaction was completed, the reaction product was cooled to room temperature, and then placed in a vacuum drying oven and dried at a temperature of 60° C. for 6 h to obtain an intermediate product 2; Step S3: 8 g of octamethylcyclotetrasiloxane, 5 g of trifluoropropylmethylcyclotrisiloxane, and 0.5 g of tetramethyldisiloxane were added to a three-necked flask equipped with a stirrer, a thermometer, and an air duct, and nitrogen was introduced for protection. The mixture was stirred and reacted for 20 min at a temperature of 25 ° C and a stirring rate of 300 r / min, and then 0.2 mL of trifluoromethanesulfonic acid was added to continue stirring and reacting for 5 min. The mixture was then heated to 75 ° C and continued to stir and react for 8 h. After the reaction was completed, the reaction product was cooled to room temperature, added to n-heptane, dried with anhydrous magnesium sulfate, and then vacuum filtered. The filtrate was rotary evaporated to remove the solvent, and then distilled at a temperature of 160 ° C for 20 min to remove small molecular low-boiling substances to obtain intermediate 3; Step S4: 8 g of intermediate product 2, 5 g of intermediate product 3, 0.02 g of chloroplatinic acid and 30 mL of isopropanol were added to a three-necked flask equipped with a stirrer, a thermometer and a gas duct, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 20 min, and then the temperature was raised to 85° C. and the stirring reaction was continued for 3 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain a concrete modifier; Step S5: 5 g of basalt fiber was soaked in a sodium hydroxide solution with a mass fraction of 10% for 1 hour, and then the soaked basalt fiber, 60 mL of anhydrous ethanol and 20 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen was introduced for protection. The mixture was stirred for 30 minutes at a temperature of 25° C. and a stirring rate of 300 r / min, and then 1.2 g of silane coupling agent KH-560 was added and the stirring reaction was continued for 20 minutes. The mixture was then heated to 85° C. and the stirring reaction was continued for 3 hours. After the reaction was completed, the reaction product was cooled to room temperature, and then centrifuged. The precipitate was placed in a vacuum drying oven and dried at a temperature of 50° C. for 2 hours to obtain a concrete modified filler; Step S6: weigh 260 parts of PO 42.5 cement, 850 parts of crushed stone, 30 parts of concrete modifier, 15 parts of concrete modified filler, 60 parts of fly ash, 40 parts of slag powder, 8 parts of AGE diluent, 2.8 parts of diethylenetriamine, 1.2 parts of SPF-300 polycarboxylic acid high-performance water reducing agent, 1 part of DU-369 polyether modified silicone defoamer and 150 parts of water according to weight parts, and set aside; Step S7: uniformly mixing PO 42.5 cement, crushed stone, concrete modifier, concrete modified filler, fly ash, slag powder, and AGE diluent to obtain a mixture; Step S8: uniformly mixing diethylenetriamine, SPF-300 polycarboxylic acid high-performance water reducing agent, DU-369 polyether modified silicone defoaming agent and water to obtain a mixed solution; Step S9: adding the mixed liquid to the mixed material and stirring evenly to obtain mortar; Step S10: Casting and curing the mortar to obtain multi-component cement concrete for construction. Embodiment 2: This embodiment is a production process of multi-component cement concrete for construction, comprising the following steps: Step S1: 10 mmol of hydroquinone, 10 mmol of sodium hydroxide and 35 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a constant pressure dropping funnel, and nitrogen is introduced for protection. The mixture is stirred and reacted for 25 minutes at a temperature of 28° C. and a stirring rate of 350 r / min. Then, 11.5 mmol of 3-bromo-1-propylene is added dropwise while stirring, and the dropping rate is controlled to be 1 drop / s. After the dropwise addition is completed, the mixture is heated to 58° C. and the stirring reaction is continued for 2.5 hours. The mixture is then cooled to room temperature and the solvent is removed by rotary evaporation. Then, 35 mL of ethylene glycol is added and the mixture is heated to 205° C. and rearranged for 3.5 hours. After the reaction is completed, the reaction product is cooled to room temperature and then added to a hydrochloric acid solution with a mass fraction of 9%. The mixture is then allowed to stand to precipitate, and then centrifuged. The precipitate is placed in a vacuum drying oven and dried at a temperature of 52° C. for 2.5 hours to obtain an intermediate product 1. Step S2: 10 g of the intermediate product 1, 40 g of epichlorohydrin and 0.4 g of benzyltriethylammonium chloride were added to a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, and stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 8 min, then heated to 112° C. and continued to stir for reaction for 2.5 h, then added dropwise with stirring while adding 18 mL of a 22% sodium hydroxide solution, and the dropping rate was controlled to be 1 drop / s. After the dropwise addition was completed, the stirring reaction was continued for 2.5 h. After the reaction was completed, the reaction product was cooled to room temperature, and then placed in a vacuum drying oven and dried at a temperature of 62° C. for 7 h to obtain an intermediate product 2; Step S3: 9 g of octamethylcyclotetrasiloxane, 7 g of trifluoropropylmethylcyclotrisiloxane, and 1 g of tetramethyldisiloxane were added to a three-necked flask equipped with a stirrer, a thermometer, and an air duct, and nitrogen was introduced for protection. The mixture was stirred for reaction at 28° C. and a stirring rate of 350 r / min for 25 min, and then 0.25 mL of trifluoromethanesulfonic acid was added to continue stirring for reaction for 8 min. The mixture was then heated to 78° C. and continued stirring for reaction for 9 h. After the reaction was completed, the reaction product was cooled to room temperature, and then added to n-heptane, and then dried with anhydrous magnesium sulfate, and then vacuum filtered. The filtrate was rotary evaporated to remove the solvent, and then distilled at 162° C. for 25 min to remove small molecular low-boiling substances to obtain intermediate 3; Step S4: 12 g of intermediate product 2, 5 g of intermediate product 3, 0.03 g of chloroplatinic acid and 35 mL of isopropanol were added to a three-necked flask equipped with a stirrer, a thermometer and a gas duct, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 25 min, and then the temperature was raised to 88° C. and the stirring reaction was continued for 4 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain a concrete modifier; Step S5: 5 g of basalt fiber was soaked in a sodium hydroxide solution with a mass fraction of 12% for 1.5 h, and then the soaked basalt fiber, 65 mL of anhydrous ethanol and 22 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen was introduced for protection. The mixture was stirred for 40 min at a temperature of 28 ° C and a stirring rate of 350 r / min, and then 2.4 g of silane coupling agent KH-560 was added and the stirring reaction was continued for 25 min. The mixture was then heated to 88 ° C and the stirring reaction was continued for 4 h. After the reaction was completed, the reaction product was cooled to room temperature, and then centrifuged. The precipitate was placed in a vacuum drying oven and dried at a temperature of 52 ° C for 2.5 h to obtain a concrete modified filler; Step S6: weigh 280 parts of PO 42.5 cement, 900 parts of crushed stone, 40 parts of concrete modifier, 25 parts of concrete modified filler, 75 parts of fly ash, 45 parts of slag powder, 9 parts of AGE diluent, 4.2 parts of diethylenetriamine, 2.5 parts of SPF-300 polycarboxylic acid high-performance water reducing agent, 1.5 parts of DU-369 polyether modified silicone defoamer and 165 parts of water according to weight parts, and set aside; Step S7: uniformly mixing PO 42.5 cement, crushed stone, concrete modifier, concrete modified filler, fly ash, slag powder, and AGE diluent to obtain a mixture; Step S8: uniformly mixing diethylenetriamine, SPF-300 polycarboxylic acid high-performance water reducing agent, DU-369 polyether modified silicone defoaming agent and water to obtain a mixed solution; Step S9: adding the mixed liquid to the mixed material and stirring evenly to obtain mortar; Step S10: Casting and curing the mortar to obtain multi-component cement concrete for construction. Embodiment 3: This embodiment is a production process of multi-component cement concrete for construction, comprising the following steps: Step S1: 10 mmol of hydroquinone, 10 mmol of sodium hydroxide and 40 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a constant pressure dropping funnel, and nitrogen is introduced for protection. The mixture is stirred and reacted for 30 min at a temperature of 30° C. and a stirring rate of 400 r / min. Then, 12 mmol of 3-bromo-1-propylene is added dropwise while stirring, and the dropping rate is controlled to be 2 drops / s. After the dropwise addition is completed, the mixture is heated to 60° C. and the stirring reaction is continued for 3 h. The mixture is then cooled to room temperature and the solvent is removed by rotary evaporation. Then, 40 mL of ethylene glycol is added and the mixture is heated to 220° C. and rearranged for 4 h. After the reaction is completed, the reaction product is cooled to room temperature and then added to a hydrochloric acid solution with a mass fraction of 10%. The mixture is then allowed to stand to precipitate, and then centrifuged. The precipitate is placed in a vacuum drying oven and dried at 55° C. for 3 h to obtain an intermediate product 1. Step S2: 10 g of the intermediate product 1, 45 g of epichlorohydrin and 0.45 g of benzyltriethylammonium chloride were added to a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, and the mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 10 min, and then the mixture was heated to 115° C. and continued to stir for reaction for 3 h, and then 20 mL of a 25% sodium hydroxide solution was added dropwise while stirring, and the dropping rate was controlled to 2 drops / s. After the addition was completed, the stirring reaction was continued for 3 h. After the reaction was completed, the reaction product was cooled to room temperature, and then placed in a vacuum drying oven and dried at a temperature of 65° C. for 8 h to obtain an intermediate product 2; Step S3: 10 g of octamethylcyclotetrasiloxane, 9 g of trifluoropropylmethylcyclotrisiloxane, and 1.5 g of tetramethyldisiloxane were added to a three-necked flask equipped with a stirrer, a thermometer, and an air duct, and nitrogen was introduced for protection. The mixture was stirred for reaction at 30° C. and a stirring rate of 400 r / min for 30 min, and then 0.3 mL of trifluoromethanesulfonic acid was added to continue stirring for reaction for 10 min. The mixture was then heated to 80° C. and continued stirring for reaction for 10 h. After the reaction was completed, the reaction product was cooled to room temperature, and then added to n-heptane, and then dried with anhydrous magnesium sulfate, and then vacuum filtered. The filtrate was rotary evaporated to remove the solvent, and then distilled at 165° C. for 30 min to remove small molecular low-boiling substances to obtain intermediate 3; Step S4: 16 g of intermediate product 2, 5 g of intermediate product 3, 0.04 g of chloroplatinic acid and 40 mL of isopropanol were added to a three-necked flask equipped with a stirrer, a thermometer and a gas guide tube, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the temperature was raised to 90° C. and the stirring reaction was continued for 5 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain a concrete modifier; Step S5: soak 5g of basalt fiber in a sodium hydroxide solution with a mass fraction of 15% for 2h, then add the soaked basalt fiber, 70mL of anhydrous ethanol and 25mL of deionized water into a three-necked flask equipped with a stirrer, a thermometer and an air duct, introduce nitrogen protection, stir and react for 50min at a temperature of 30°C and a stirring rate of 400r / min, then add 3.6g of silane coupling agent KH-560 and continue to stir and react for 30min, then heat to 90°C and continue to stir and react for 5h, after the reaction is completed, cool the reaction product to room temperature, then centrifuge, place the precipitate in a vacuum drying oven, and dry it at a temperature of 55°C for 3h to obtain a concrete modified filler; Step S6: weigh 300 parts of PO 42.5 cement, 950 parts of crushed stone, 50 parts of concrete modifier, 35 parts of concrete modified filler, 90 parts of fly ash, 50 parts of slag powder, 10 parts of AGE diluent, 5.6 parts of diethylenetriamine, 3.8 parts of SPF-300 polycarboxylic acid high-performance water reducing agent, 2 parts of DU-369 polyether modified silicone defoamer and 180 parts of water according to weight parts, and set aside; Step S7: uniformly mixing PO 42.5 cement, crushed stone, concrete modifier, concrete modified filler, fly ash, slag powder, and AGE diluent to obtain a mixture; Step S8: uniformly mixing diethylenetriamine, SPF-300 polycarboxylic acid high-performance water reducing agent, DU-369 polyether modified silicone defoaming agent and water to obtain a mixed solution; Step S9: adding the mixed liquid to the mixed material and stirring evenly to obtain mortar; Step S10: Casting and curing the mortar to obtain multi-component cement concrete for construction. Comparative Example 1: This comparative example is a production process of a multi-component cement concrete for construction, comprising the following steps: Step S1: weigh 300 parts of PO 42.5 cement, 950 parts of crushed stone, 90 parts of fly ash, 50 parts of slag powder, 10 parts of AGE diluent, 5.6 parts of diethylenetriamine, 3.8 parts of SPF-300 polycarboxylic acid high-performance water reducer, 2 parts of DU-369 polyether modified silicone defoamer and 180 parts of water according to weight parts, and set aside; Step S2: uniformly mixing PO 42.5 cement, crushed stone, fly ash, slag powder and AGE diluent to obtain a mixture; Step S3: uniformly mixing diethylenetriamine, SPF-300 polycarboxylic acid high-performance water reducing agent, DU-369 polyether modified silicone defoaming agent and water to obtain a mixed solution; Step S4: adding the mixed liquid to the mixed material and stirring evenly to obtain mortar; Step S5: Casting and curing the mortar to obtain multi-component cement concrete for construction. Comparative Example 2: This comparative example is a production process of a multi-component cement concrete for construction, comprising the following steps: Step S1: 10 mmol of hydroquinone, 10 mmol of sodium hydroxide and 40 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a constant pressure dropping funnel, and nitrogen is introduced for protection. The mixture is stirred and reacted for 30 min at a temperature of 30° C. and a stirring rate of 400 r / min. Then, 12 mmol of 3-bromo-1-propylene is added dropwise while stirring, and the dropping rate is controlled to be 2 drops / s. After the dropwise addition is completed, the mixture is heated to 60° C. and the stirring reaction is continued for 3 h. The mixture is then cooled to room temperature and the solvent is removed by rotary evaporation. Then, 40 mL of ethylene glycol is added and the mixture is heated to 220° C. and rearranged for 4 h. After the reaction is completed, the reaction product is cooled to room temperature and then added to a hydrochloric acid solution with a mass fraction of 10%. The mixture is then allowed to stand to precipitate, and then centrifuged. The precipitate is placed in a vacuum drying oven and dried at 55° C. for 3 h to obtain an intermediate product 1. Step S2: 10 g of the intermediate product 1, 45 g of epichlorohydrin and 0.45 g of benzyltriethylammonium chloride were added to a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, and the mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 10 min, and then the mixture was heated to 115° C. and continued to stir for reaction for 3 h, and then 20 mL of a 25% sodium hydroxide solution was added dropwise while stirring, and the dropping rate was controlled to 2 drops / s. After the addition was completed, the stirring reaction was continued for 3 h. After the reaction was completed, the reaction product was cooled to room temperature, and then placed in a vacuum drying oven and dried at a temperature of 65° C. for 8 h to obtain an intermediate product 2; Step S3: 10 g of octamethylcyclotetrasiloxane, 9 g of trifluoropropylmethylcyclotrisiloxane, and 1.5 g of tetramethyldisiloxane were added to a three-necked flask equipped with a stirrer, a thermometer, and an air duct, and nitrogen was introduced for protection. The mixture was stirred for reaction at 30° C. and a stirring rate of 400 r / min for 30 min, and then 0.3 mL of trifluoromethanesulfonic acid was added to continue stirring for reaction for 10 min. The mixture was then heated to 80° C. and continued stirring for reaction for 10 h. After the reaction was completed, the reaction product was cooled to room temperature, and then added to n-heptane, and then dried with anhydrous magnesium sulfate, and then vacuum filtered. The filtrate was rotary evaporated to remove the solvent, and then distilled at 165° C. for 30 min to remove small molecular low-boiling substances to obtain intermediate 3; Step S4: 16 g of intermediate product 2, 5 g of intermediate product 3, 0.04 g of chloroplatinic acid and 40 mL of isopropanol were added to a three-necked flask equipped with a stirrer, a thermometer and a gas guide tube, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 30 min, and then the temperature was raised to 90° C. and the stirring reaction was continued for 5 h. After the reaction was completed, the reaction product was cooled to room temperature, and then the solvent was removed by rotary evaporation to obtain a concrete modifier; Step S5: weigh 300 parts of PO 42.5 cement, 950 parts of crushed stone, 50 parts of concrete modifier, 90 parts of fly ash, 50 parts of slag powder, 10 parts of AGE diluent, 5.6 parts of diethylenetriamine, 3.8 parts of SPF-300 polycarboxylic acid high-performance water reducing agent, 2 parts of DU-369 polyether modified silicone defoamer and 180 parts of water according to weight parts, and set aside; Step S6: uniformly mixing PO 42.5 cement, crushed stone, concrete modifier, fly ash, slag powder and AGE diluent to obtain a mixture; Step S7: uniformly mixing diethylenetriamine, SPF-300 polycarboxylic acid high-performance water reducing agent, DU-369 polyether modified silicone defoaming agent and water to obtain a mixed solution; Step S8: adding the mixed liquid to the mixed material and stirring evenly to obtain mortar; Step S9: Casting and curing the mortar to obtain multi-component cement concrete for construction. Comparative Example 3: This comparative example is a production process of a multi-component cement concrete for construction, comprising the following steps: Step S1: 5 g of basalt fiber was soaked in a sodium hydroxide solution with a mass fraction of 15% for 2 h, and then the soaked basalt fiber, 70 mL of anhydrous ethanol and 25 mL of deionized water were added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen was introduced for protection. The mixture was stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 50 min, and then 3.6 g of silane coupling agent KH-560 was added and the stirring reaction was continued for 30 min. The mixture was then heated to 90° C. and the stirring reaction was continued for 5 h. After the reaction was completed, the reaction product was cooled to room temperature, and then centrifuged. The precipitate was placed in a vacuum drying oven and dried at a temperature of 55° C. for 3 h to obtain a concrete modified filler. Step S2: weigh 300 parts of PO 42.5 cement, 950 parts of crushed stone, 35 parts of concrete modified filler, 90 parts of fly ash, 50 parts of slag powder, 10 parts of AGE diluent, 5.6 parts of diethylenetriamine, 3.8 parts of SPF-300 polycarboxylic acid high-performance water reducing agent, 2 parts of DU-369 polyether modified silicone defoamer and 180 parts of water according to weight parts, and set aside; Step S3: uniformly mixing PO 42.5 cement, crushed stone, concrete modified filler, fly ash, slag powder, and AGE diluent to obtain a mixture; Step S4: uniformly mixing diethylenetriamine, SPF-300 polycarboxylic acid high-performance water reducing agent, DU-369 polyether modified silicone defoaming agent and water to obtain a mixed solution; Step S5: adding the mixed liquid to the mixed material and stirring evenly to obtain mortar; Step S6: Casting and curing the mortar to obtain multi-component cement concrete for construction. Comparative Example 4: This comparative example is a production process of a multi-component cement concrete for construction, comprising the following steps: Step S1: weigh 300 parts of PO 42.5 cement, 950 parts of crushed stone, 50 parts of E-44 epoxy resin, 35 parts of basalt fiber, 90 parts of fly ash, 50 parts of slag powder, 10 parts of AGE diluent, 5.6 parts of diethylenetriamine, 3.8 parts of SPF-300 polycarboxylic acid high-performance water reducing agent, 2 parts of DU-369 polyether modified silicone defoamer and 180 parts of water according to weight parts, and set aside; Step S2: uniformly mixing PO 42.5 cement, crushed stone, E-44 epoxy resin, basalt fiber, fly ash, slag powder, and AGE diluent to obtain a mixture; Step S3: uniformly mixing diethylenetriamine, SPF-300 polycarboxylic acid high-performance water reducing agent, DU-369 polyether modified silicone defoaming agent and water to obtain a mixed solution; Step S4: adding the mixed liquid to the mixed material and stirring evenly to obtain mortar; Step S5: Casting and curing the mortar to obtain multi-component cement concrete for construction. The properties of the multi-component cement concrete for construction of Examples 1-3 and Comparative Examples 1-4 were tested, and the test results are shown in the following table: Referring to the data in the above table, based on the comparison between Examples 1-3 and Comparative Examples 1-4, it can be seen that adding concrete modifiers and concrete modified fillers can significantly improve the compressive strength of cement concrete and effectively reduce its water absorption rate. In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention. The invention relates to the field of building materials, and in particular to a multi-component cement concrete for construction and a production process thereof, which are used to solve the problem that the existing multi-component cement concrete has low mechanical strength and is easily penetrated by moisture and harmful substances; the multi-component cement concrete ensures that the potential of the material can be fully exerted during the pouring and curing process of the concrete through reasonable formula design, and the finally formed concrete structure not only has significantly enhanced mechanical strength, but also has excellent waterproof and anti-seepage performance, reduces the probability of cracks, and extends the service life; in addition, by optimizing the production process, the multi-component cement concrete exhibits better fluidity and workability during the construction process, which not only reduces the construction difficulty, but also improves the construction efficiency, which is of great significance to improving the quality of buildings.

Claims

1. A multi-component cement concrete for construction, characterized in that: It comprises the following components in parts by weight: 260-300 parts of cement, 850-950 parts of crushed stone, 30-50 parts of concrete modifier, 15-35 parts of concrete modified filler, 60-90 parts of fly ash, 40-50 parts of slag powder, 8-10 parts of diluent, 2.8-5.6 parts of diethylenetriamine, 1.2-3.8 parts of water reducer, 1-2 parts of defoamer and 150-180 parts of water; Wherein, the concrete modifier is prepared by the following steps: Step a1: add hydroquinone, sodium hydroxide and anhydrous ethanol to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a constant pressure dropping funnel, introduce nitrogen protection, stir and react for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then add 3-bromo-1-propylene dropwise while stirring, and control the dropping rate to 1-2 drops / s. After the dropwise addition is completed, continue to stir and react for 2-3 hours under the condition of heating to 55-60°C, then cool to room temperature, remove the solvent by rotary evaporation, then add ethylene glycol and rearrange the reaction at 190-220°C for 3-4 hours. After the reaction, cool the reaction product to room temperature, then add it to a hydrochloric acid solution, then let it stand to precipitate, then centrifuge it, place the precipitate in a vacuum drying oven, and dry it at a temperature of 50-55°C for 2-3 hours to obtain an intermediate product 1; Step a2: add the intermediate product 1, epichlorohydrin and benzyltriethylammonium chloride to a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, stir and react for 5-10 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then heat to 110-115°C and continue stirring and reacting for 2-3 hours, then add sodium hydroxide solution dropwise while stirring, control the dropping rate to 1-2 drops / s, continue stirring and reacting for 2-3 hours after the dropwise addition is completed, and after the reaction is completed, cool the reaction product to room temperature, then place it in a vacuum drying oven, and dry it at a temperature of 60-65°C for 6-8 hours to obtain an intermediate product 2; Step a3: octamethylcyclotetrasiloxane, trifluoropropylmethylcyclotrisiloxane and tetramethyldisiloxane are added to a three-necked flask equipped with a stirrer, a thermometer and an air guide tube, and nitrogen is introduced for protection. The mixture is stirred and reacted for 20-30 minutes at a temperature of 25-30° C. and a stirring rate of 300-400 r / min. Trifluoromethanesulfonic acid is then added and stirred for 5-10 minutes. The mixture is then heated to 75-80° C. and stirred for 8-10 hours. After the reaction is completed, the reaction product is cooled to room temperature, added to n-heptane, dried with anhydrous magnesium sulfate, and then vacuum filtered. The filtrate is rotary evaporated to remove the solvent, and then distilled at a temperature of 160-165° C. for 20-30 minutes to remove small molecular low-boiling substances to obtain intermediate 3; Step a4: add intermediate product 2, intermediate product 3, chloroplatinic acid and isopropanol into a three-necked flask equipped with a stirrer, a thermometer and an air duct, introduce nitrogen protection, stir and react for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then raise the temperature to 85-90°C and continue stirring and reacting for 3-5 hours. After the reaction is completed, cool the reaction product to room temperature, then rotary evaporate to remove the solvent, and obtain a concrete modifier.

2. The multi-component cement concrete for construction according to claim 1, characterized in that: The usage ratio of the hydroquinone, sodium hydroxide, anhydrous ethanol, 3-bromo-1-propylene and ethylene glycol in step a1 is 10mmol:10mmol:30-40mL:11-12mmol:30-40mL; the mass fraction of the hydrochloric acid solution is 8-10%.

3. The multi-component cement concrete for construction according to claim 1, characterized in that: The usage ratio of the intermediate product 1, epichlorohydrin, benzyltriethylammonium chloride and sodium hydroxide solution in step a2 is 10g:35-45g:0.35-0.45g:15-20mL; the mass fraction of the sodium hydroxide solution is 20-25%.

4. The multi-component cement concrete for construction according to claim 1, characterized in that: The usage ratio of the octamethylcyclotetrasiloxane, trifluoropropylmethylcyclotrisiloxane, tetramethyldisiloxane and trifluoromethanesulfonic acid in step a3 is 8-10 g: 5-9 g: 0.5-1.5 g: 0.2-0.3 mL.

5. The multi-component cement concrete for construction according to claim 1, characterized in that: The usage ratio of the intermediate product 2, the intermediate product 3, chloroplatinic acid and isopropanol in step a4 is 8-16 g: 5 g: 0.02-0.04 g: 30-40 mL.

6. The multi-component cement concrete for construction according to claim 1, characterized in that: The concrete modified filler is prepared by the following steps: The basalt fiber is soaked in a sodium hydroxide solution for 1-2 hours, and then the soaked basalt fiber, anhydrous ethanol and deionized water are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The reaction is stirred for 30-50 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min. Then, silane coupling agent KH-560 is added and the stirring reaction is continued for 20-30 minutes. Then, the temperature is raised to 85-90°C and the stirring reaction is continued for 3-5 hours. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is placed in a vacuum drying oven and dried at a temperature of 50-55°C for 2-3 hours to obtain a concrete modified filler.

7. The multi-component cement concrete for construction according to claim 6, characterized in that: The usage ratio of the basalt fiber, anhydrous ethanol, deionized water and silane coupling agent KH-560 is 5g: 60-70mL: 20-25mL: 1.2-3.6g; the mass fraction of the sodium hydroxide solution is 10-15%.

8. A production process for multi-component cement concrete for construction, characterized in that: The following steps are involved: Step 1: weigh 260-300 parts of cement, 850-950 parts of crushed stone, 30-50 parts of concrete modifier, 15-35 parts of concrete modified filler, 60-90 parts of fly ash, 40-50 parts of slag powder, 8-10 parts of diluent, 2.8-5.6 parts of diethylenetriamine, 1.2-3.8 parts of water reducer, 1-2 parts of defoamer and 150-180 parts of water according to weight parts, and set aside; Step 2: Evenly mix cement, crushed stone, concrete modifier, concrete modified filler, fly ash, slag powder and diluent to obtain a mixture; Step 3: Evenly mix diethylenetriamine, water reducing agent, defoaming agent and water to obtain a mixed solution; Step 4: Add the mixed liquid to the mixed material and stir evenly to obtain mortar; Step 5: Cast and shape the mortar, and perform curing to obtain multi-component cement concrete for construction.

9. The production process of a multi-component cement concrete for construction according to claim 8, characterized in that: The cement is PO 42.5 type cement; the crushed stone is crushed stone with a particle size of 4.75-9.5 mm; the diluent is AGE diluent; the water reducer is SPF-300 polycarboxylic acid high-performance water reducer; and the defoamer is DU-369 polyether modified silicone defoamer.

Images