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Steel slag doped premixed concrete and preparation method thereof

A technology for ready-mixed concrete and steel slag, applied in the field of building materials, can solve the problems of consuming large fossil energy, aggravating the greenhouse effect, affecting the ecological environment, etc.

Active Publication Date: 2020-10-20
江阴市新远见工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, cement needs to be ground and calcined during the production process. In addition to consuming a large amount of fossil energy in this process, it will also directly or indirectly emit a large amount of carbon dioxide, which will aggravate the greenhouse effect and affect the ecological environment.

Method used

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  • Steel slag doped premixed concrete and preparation method thereof

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Effect test

Embodiment 1

[0056] S1 Preparation of microbial bacterial liquid: mix peptone, beef extract, urea, and yeast extract to make microbial nutrient solution, pour the microbial nutrient solution into the cultured Bacillus subtilis bacterial liquid, stir for 1 min, and obtain microbial bacterial liquid;

[0057] S2 prepares modified fiber;

[0058] A. Preparation of porous fibers: add distilled water to polyvinyl alcohol, heat to 85°C, stir at 300r / min for 0.5h, cool down to 55°C, add hydrochloric acid, when the pH value is 1, add citral, and crosslinking reaction 1.5h, continue to heat up to 85°C, add nano-silicon nitride particles, calcium carbonate, hydrochloric acid, rubber powder and steel slag, stir at 800r / min for 25min, and make porous fibers by electrospinning;

[0059] B. Modification of the porous fiber: Soak the porous fiber in the silicon coupling agent for 4 hours, take it out and dry it, soak it in the microbial bacterial solution for 1 hour, take it out and dry it at 35°C for 1 ...

Embodiment 2

[0070] S1 Preparation of microbial bacterial liquid: mix peptone, beef extract, urea, and yeast extract to make microbial nutrient solution, pour the microbial nutrient solution into the cultured Bacillus subtilis bacterial liquid, stir for 1.5min, and obtain microbial bacterial liquid;

[0071] S2 prepares modified fiber;

[0072] A. Preparation of porous fibers: add distilled water to polyvinyl alcohol, heat to 90°C, stir at 300r / min for 1h, cool down to 60°C, add hydrochloric acid, when the pH value is 2, add citral, crosslinking reaction for 2h , continue to heat up to 90°C, add nano-silicon nitride particles, calcium carbonate, hydrochloric acid, rubber powder and steel slag, stir at 800r / min for 35min, and make porous fibers by electrospinning;

[0073] B. Modify the porous fiber: Soak the porous fiber in the silicon coupling agent for 5 hours, take it out and dry it, soak it in the microbial bacterial solution for 1.5 hours, take it out and dry it at 37°C for 1.5 hours,...

Embodiment 3

[0084] S1 Preparation of microbial bacterial liquid: mix peptone, beef extract, urea, and yeast extract to make microbial nutrient solution, pour the microbial nutrient solution into the cultured Bacillus subtilis bacterial liquid, stir for 2 minutes, and obtain microbial bacterial liquid;

[0085] S2 prepares modified fiber;

[0086] A. Preparation of porous fibers: add distilled water to polyvinyl alcohol, heat to 95°C, stir at 300r / min for 1.5h, cool down to 65°C, add hydrochloric acid, when the pH value is 3, add citral, crosslinking reaction 2.5h, continue to heat up to 95°C, add nano-silicon nitride particles, calcium carbonate, hydrochloric acid, rubber powder and steel slag, stir at 800r / min for 45min, and make porous fibers by electrospinning;

[0087] B. Modification of the porous fiber: Soak the porous fiber in the silicon coupling agent for 6 hours, take it out and dry it, soak it in the microbial bacterial solution for 2 hours, take it out and dry it at 40°C for 2...

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Abstract

The invention discloses a steel slag doped premixed concrete and a preparation method thereof. The preparation method comprises the steps that citral is added into a polypropylene glycol solution to modify polypropylene glycol, then calcium carbonate, hydrochloric acid, steel slag, rubber powder and other substances are added to improve the mechanical property of polypropylene glycol, and porous fibers are prepared through electrostatic spinning; the porous fibers are modified by using a silane coupling agent, and microorganisms are loaded on the modified fibers to obtain modified fibers; calcium lactate is wrapped with urea-formaldehyde resin to prepare calcium lactate microcapsules; and calcium lactate microcapsules, modified fibers, cement and other materials are mixed and stirred to prepare the steel slag doped premixed concrete. The invention provides a steel slag doped premixed concrete and a preparation method thereof. The ratio and reaction time are reasonably controlled in thepreparation process, the mechanical properties and impermeability of the prepared concrete sample are effectively improved, and meanwhile, the steel slag doped premixed concrete also has certain self-repairing capability, so that manpower, material resources and financial resources are greatly saved, and the practicability is relatively high.

Description

technical field [0001] The invention relates to the field of building materials, in particular to ready-mixed concrete mixed with steel slag and a preparation method thereof. Background technique [0002] Concrete is the most widely used construction material in civil engineering today. Although concrete has high compressive strength and good durability, it also has a certain degree of brittleness. When problems such as excessive load or defects in its own factors occur, cracks are very easy to appear. If the cracks are not repaired in time, it is easy to damage the concrete. The erosion of water and other harmful chemicals, causing more serious economic losses. [0003] The traditional repair method is mainly manual repair and reinforcement. This method is only suitable for visible cracks, and it is not easy to detect the damage inside the concrete. If the cracks inside the concrete are not dealt with in time, it may lead to secondary cracks later, and the manual Repairin...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B20/12D01D5/00D01D5/24C12N1/20C12R1/125
CPCC04B20/12C04B28/00C04B2201/50C12N1/20D01D5/003D01D5/24C04B14/06C04B24/307C04B16/0616C04B2103/302C04B18/141C04B18/067C04B18/08C04B20/1051C04B2103/0001
Inventor 李炳王磊斌
Owner 江阴市新远见工程有限公司
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