Premixed mortar containing building waste brick and tile fine aggregate

Abstract

The invention discloses premixed mortar containing building waste brick and tile fine aggregate, which is prepared from the following raw materials in parts by weight: 10 to 20 parts of cement, 10 to 20 parts of waste brick and tile fine aggregate, 5 to 10 parts of yellow sand, 10 to 20 parts of composite fine aggregate, 5 to 10 parts of waste brick and tile micro powder, 5 to 10 parts of fly ash, 3 to 5 parts of cellulose, 1 to 3 parts of modifier, 1 to 3 parts of water reducing agent and 10 to 20 parts of water, the invention relates to the technical field of building materials. According to the ready-mixed mortar containing the building waste brick and tile type fine aggregate, the brick and tile type fine aggregate, the concrete fine aggregate and the calcined coal gangue fine aggregate are matched and coordinated for use, so that the compactness, the impact resistance and the water resistance of the mortar are well improved; the purpose of stably and efficiently preparing the high-quality premixed mortar is well achieved, so that the use of people is greatly facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a premixed mortar containing fine aggregates of building waste bricks and tiles. Background Art

[0002] Premixed mortar refers to various mortar mixtures produced by specialized manufacturers and used in construction projects. It is a new type of building material used in China. It can be divided into ordinary premixed mortar and special mortar according to its performance. It has the advantages of health, environmental protection, stable quality, energy saving and comfort. Ordinary mortar mainly includes masonry mortar, plastering mortar and floor mortar. Masonry mortar and plastering mortar are mainly used for masonry and plastering of various concrete bricks, fly ash bricks and clay bricks in load-bearing walls and non-load-bearing walls. Floor mortar is used for floor leveling in ordinary and special occasions. Special mortar includes thermal insulation mortar, decorative mortar, self-leveling mortar, waterproof mortar, etc. Its uses are also diverse. It is widely used in building exterior wall insulation, interior decoration repair, etc. Premixed mortar involves more raw materials. In addition to the commonly used cementitious materials, aggregates, and mineral admixtures, it is also necessary to add water-retaining thickening materials, additives, admixtures and other materials according to the performance of the mortar, so that the material composition of the mortar is as few as five or six, and as many as more than a dozen. Since the mortar forms a unit together with the matrix, as soon as the mortar comes into contact with the matrix, the matrix will absorb moisture from the mortar, and at the same time, the outer surface of the mortar also evaporates moisture into the atmosphere. Therefore, the water retention and bonding strength of the mortar are particularly important.

[0003] The existing premixed mortar has a relatively single composition. It is impossible to significantly enhance the impact resistance of the mortar itself by relying solely on brick and tile fine aggregates. It is impossible to achieve the coordinated use of brick and tile fine aggregates with concrete fine aggregates and calcined coal gangue fine aggregates to improve the density, impact resistance and water resistance of the mortar. It is impossible to achieve the purpose of preparing high-quality premixed mortar in a stable and efficient manner, which brings great inconvenience to people's use. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a premixed mortar containing fine aggregates of construction waste bricks and tiles, which solves the problem that the existing premixed mortar has a relatively single component and cannot significantly enhance the impact resistance of the mortar itself by relying solely on fine aggregates of bricks and tiles. It cannot achieve the goal of preparing high-quality premixed mortar in a stable and efficient manner by coordinating the use of fine aggregates of bricks and tiles with fine aggregates of concrete and fine aggregates of calcined coal gangue.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical scheme: a premixed mortar containing construction waste brick and tile fine aggregate, whose raw materials include, by weight: 10-20 parts of cement, 10-20 parts of discarded brick and tile fine aggregate, 5-10 parts of yellow sand, 10-20 parts of composite fine aggregate, 5-10 parts of discarded brick and tile powder, 5-10 parts of fly ash, 3-5 parts of cellulose, 1-3 parts of modifier and 1-3 parts of water reducer and 10-20 parts of water.

[0008] Preferably, the raw materials include, by weight: 15 parts of cement, 15 parts of waste brick and tile fine aggregate, 7 parts of yellow sand, 15 parts of composite fine aggregate, 7 parts of waste brick and tile powder, 7 parts of fly ash, 4 parts of cellulose, 2 parts of modifier, 2 parts of water reducer and 15 parts of water.

[0009] Preferably, the raw materials include, by weight: 10 parts of cement, 10 parts of waste brick and tile fine aggregate, 5 parts of yellow sand, 10 parts of composite fine aggregate, 5 parts of waste brick and tile powder, 5 parts of fly ash, 3 parts of cellulose, 1 part of modifier, 1 part of water reducer and 10 parts of water.

[0010] Preferably, the raw materials include, by weight: 20 parts of cement, 20 parts of waste brick and tile fine aggregate, 10 parts of yellow sand, 20 parts of composite fine aggregate, 10 parts of waste brick and tile powder, 10 parts of fly ash, 5 parts of cellulose, 3 parts of modifier, 3 parts of water reducer and 20 parts of water.

[0011] Preferably, the composite fine aggregate is a combination of concrete fine aggregate and calcined coal gangue fine aggregate.

[0012] Preferably, the modifier is any combination of two or more of sodium chloride, potassium chloride, ammonium chloride, sodium sulfate, sodium phosphate, disodium phosphate or pentasodium triphosphate.

[0013] Preferably, the water reducing agent is a polycarboxylic acid-based powdered high-efficiency water reducing agent.

[0014] The present invention also provides a method for preparing a premixed mortar containing fine aggregates of building waste bricks and tiles, which specifically comprises the following steps:

[0015] S1. Measuring of raw materials: First, the required weight portions of cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose, modifier, water reducing agent and water are measured respectively through batching equipment;

[0016] S2, mixing treatment: adding the cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose and water weighed in step S1 into a mixing and stirring device in sequence, mixing and stirring at a speed of 500-800 r / min and a temperature of 55-60° C. for 30-50 min to obtain a primary mixture;

[0017] S3, pressurized mixing: the primary mixed material obtained in step S2 is transferred to a pressurized mixing device, first sealed, then pressurized to 2.5-3.6 MPa in the silo, and mixed for 15-20 minutes to allow better affinity between the granular materials, and then taken out;

[0018] S4, additive mixing: add the modifier and water reducing agent weighed in step S1 into a mixing and stirring device, and add the primary mixture after the pressurized mixing treatment in step S3 into the mixing and stirring device, mix and stir at 800-1000r / min and a temperature of 60-70°C for 1-2h to obtain a premixed mortar.

[0019] (III) Beneficial effects

[0020] The present invention provides a premixed mortar containing fine aggregates of construction waste bricks and tiles. Compared with the prior art, the premixed mortar has the following beneficial effects: the raw materials of the premixed mortar containing fine aggregates of construction waste bricks and tiles include, by weight, 10-20 parts of cement, 10-20 parts of discarded brick and tile fine aggregates, 5-10 parts of yellow sand, 10-20 parts of composite fine aggregates, 5-10 parts of discarded brick and tile micro powders, 5-10 parts of fly ash, 3-5 parts of cellulose, 1-3 parts of modifiers, 1-3 parts of water reducers and 10-20 parts of water. The brick and tile fine aggregates can be coordinated and used with concrete fine aggregates and calcined coal gangue fine aggregates to improve the density, impact resistance and water resistance of the mortar, and the purpose of preparing high-quality premixed mortar stably and efficiently can be achieved, thereby greatly facilitating people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a flow chart of the mortar preparation method. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in 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.

[0023] See also Figure 1 The embodiments of the present invention provide four technical solutions: a premixed mortar containing fine aggregates of building waste bricks and tiles, specifically including the following embodiments:

[0024] Example 1

[0025] A premixed mortar containing construction waste brick and tile fine aggregate, the raw materials of which include, by weight, 12 parts of cement, 12 parts of discarded brick and tile fine aggregate, 6 parts of yellow sand, 12 parts of composite fine aggregate, 6 parts of discarded brick and tile micropowder, 6 parts of fly ash, 4 parts of cellulose, 2 parts of modifier and 2 parts of water reducer and 12 parts of water, the composite fine aggregate is a combination of concrete fine aggregate and calcined coal gangue fine aggregate, the modifier is a combination of sodium chloride, potassium chloride, ammonium chloride, sodium sulfate, sodium phosphate, disodium phosphate and pentasodium triphosphate, and the water reducer is a polycarboxylic acid series powder high-efficiency water reducer.

[0026] The embodiment of the present invention also provides a method for preparing a premixed mortar containing fine aggregates of building waste bricks and tiles, which specifically comprises the following steps:

[0027] S1. Measuring of raw materials: First, the required weight portions of cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose, modifier, water reducing agent and water are measured respectively through batching equipment;

[0028] S2, mixing treatment: adding cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose and water weighed in step S1 into a mixing and stirring device in sequence, mixing and stirring at a speed of 600 r / min and a temperature of 56° C. for 32 minutes to obtain a primary mixture;

[0029] S3, pressurized mixing: the primary mixed material obtained in step S2 is transferred to a pressurized mixing device, first sealed, then pressurized to 3 MPa in the silo, and mixed for 16 minutes to allow better affinity between the granular materials, and then taken out;

[0030] S4, additive mixing: add the modifier and water reducing agent weighed in step S1 into a mixing and stirring device, and add the primary mixture after the pressurized mixing treatment in step S3 into the mixing and stirring device, mix and stir at 900 r / min and 62° C. for 1.5 hours to obtain a premixed mortar.

[0031] Example 2

[0032] A premixed mortar containing construction waste brick and tile fine aggregate, the raw materials of which include, by weight, 15 parts of cement, 15 parts of discarded brick and tile fine aggregate, 7 parts of yellow sand, 15 parts of composite fine aggregate, 7 parts of discarded brick and tile micropowder, 7 parts of fly ash, 4 parts of cellulose, 2 parts of modifier, 2 parts of water reducer and 15 parts of water, the composite fine aggregate is a combination of concrete fine aggregate and calcined coal gangue fine aggregate, the modifier is a combination of sodium chloride, potassium chloride and ammonium chloride, and the water reducer is a polycarboxylic acid series powder high-efficiency water reducer.

[0033] The embodiment of the present invention also provides a method for preparing a premixed mortar containing fine aggregates of building waste bricks and tiles, which specifically comprises the following steps:

[0034] S1. Measuring of raw materials: First, the required weight portions of cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose, modifier, water reducing agent and water are measured respectively through batching equipment;

[0035] S2, mixing treatment: adding the cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose and water weighed in step S1 into a mixing and stirring device in sequence, mixing and stirring at a speed of 700 r / min and a temperature of 57° C. for 40 minutes to obtain a primary mixture;

[0036] S3, pressurized mixing: the primary mixed material obtained in step S2 is transferred to a pressurized mixing device, first sealed, then pressurized to 3.1 MPa in the silo, and mixed for 17 minutes to allow better affinity between the granular materials, and then taken out;

[0037] S4, additive mixing: add the modifier and water reducing agent weighed in step S1 into a mixing and stirring device, and add the primary mixture after the pressurized mixing treatment in step S3 into the mixing and stirring device, mix and stir at 900 r / min and 65° C. for 1.5 hours to obtain a premixed mortar.

[0038] Example 3

[0039] A premixed mortar containing construction waste brick and tile fine aggregate, the raw materials of which include, by weight, 10 parts of cement, 10 parts of discarded brick and tile fine aggregate, 5 parts of yellow sand, 10 parts of composite fine aggregate, 5 parts of discarded brick and tile micropowder, 5 parts of fly ash, 3 parts of cellulose, 1 part of modifier, 1 part of water reducer and 10 parts of water, the composite fine aggregate is a combination of concrete fine aggregate and calcined coal gangue fine aggregate, the modifier is a combination of sodium sulfate, sodium phosphate and disodium phosphate, and the water reducer is a polycarboxylic acid series powder high-efficiency water reducer.

[0040] The embodiment of the present invention also provides a method for preparing a premixed mortar containing fine aggregates of building waste bricks and tiles, which specifically comprises the following steps:

[0041] S1. Measuring of raw materials: First, the required weight portions of cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose, modifier, water reducing agent and water are measured respectively through batching equipment;

[0042] S2, mixing treatment: adding cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose and water weighed in step S1 into a mixing and stirring device in sequence, mixing and stirring at a speed of 500 r / min and a temperature of 55° C. for 30 minutes to obtain a primary mixture;

[0043] S3, pressurized mixing: the primary mixed material obtained in step S2 is transferred to a pressurized mixing device, first sealed, then pressurized to 2.5 MPa in the silo, and mixed for 15 minutes to allow better affinity between the granular materials, and then taken out;

[0044] S4, additive mixing: add the modifier and water reducing agent weighed in step S1 into a mixing and stirring device, and add the primary mixture after the pressurized mixing treatment in step S3 into the mixing and stirring device, mix and stir at 800 r / min and 60° C. for 1 hour to obtain a premixed mortar.

[0045] Example 4

[0046] A premixed mortar containing construction waste brick and tile fine aggregate, the raw materials of which include, by weight, 20 parts of cement, 20 parts of discarded brick and tile fine aggregate, 10 parts of yellow sand, 20 parts of composite fine aggregate, 10 parts of discarded brick and tile micro powder, 10 parts of fly ash, 5 parts of cellulose, 3 parts of modifier, 3 parts of water reducer and 20 parts of water, the composite fine aggregate is a combination of concrete fine aggregate and calcined coal gangue fine aggregate, the modifier is a combination of sodium phosphate, disodium phosphate and pentasodium triphosphate, and the water reducer is a polycarboxylic acid series powder high-efficiency water reducer.

[0047] The embodiment of the present invention also provides a method for preparing a premixed mortar containing fine aggregates of building waste bricks and tiles, which specifically comprises the following steps:

[0048] S1. Measuring of raw materials: First, the required weight portions of cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose, modifier, water reducing agent and water are measured respectively through batching equipment;

[0049] S2, mixing treatment: adding cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose and water weighed in step S1 into a mixing and stirring device in sequence, mixing and stirring at a speed of 800 r / min and a temperature of 60° C. for 50 min to obtain a primary mixture;

[0050] S3, pressurized mixing: the primary mixed material obtained in step S2 is transferred to a pressurized mixing device, first sealed, then pressurized to 3.6 MPa in the silo, and mixed for 20 minutes to allow better affinity between the granular materials, and then taken out;

[0051] S4, additive mixing: add the modifier and water reducing agent weighed in step S1 into a mixing and stirring device, and add the primary mixture after the pressurized mixing treatment in step S3 into the mixing and stirring device, mix and stir at 1000 r / min and 70° C. for 2 hours to obtain a premixed mortar.

[0052] In summary, the present invention can achieve the goal of preparing high-quality premixed mortar in a stable and efficient manner by coordinating the use of brick and tile fine aggregates, concrete fine aggregates and calcined coal gangue fine aggregates, thereby greatly facilitating people's use.

[0053] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A premixed mortar containing fine aggregates of construction waste bricks and tiles, characterized in that: The raw materials include, by weight: 10-20 parts of cement, 10-20 parts of waste brick and tile fine aggregate, 5-10 parts of yellow sand, 10-20 parts of composite fine aggregate, 5-10 parts of waste brick and tile powder, 5-10 parts of fly ash, 3-5 parts of cellulose, 1-3 parts of modifier, 1-3 parts of water reducer and 10-20 parts of water.

2. The premixed mortar containing fine aggregates of construction waste bricks and tiles according to claim 1, characterized in that: The raw materials include, by weight: 15 parts of cement, 15 parts of waste brick and tile fine aggregate, 7 parts of yellow sand, 15 parts of composite fine aggregate, 7 parts of waste brick and tile micro powder, 7 parts of fly ash, 4 parts of cellulose, 2 parts of modifier, 2 parts of water reducer and 15 parts of water.

3. The premixed mortar containing construction waste brick and tile fine aggregate according to claim 1, characterized in that: The raw materials include, by weight: 10 parts of cement, 10 parts of waste brick and tile fine aggregate, 5 parts of yellow sand, 10 parts of composite fine aggregate, 5 parts of waste brick and tile micro powder, 5 parts of fly ash, 3 parts of cellulose, 1 part of modifier, 1 part of water reducer and 10 parts of water.

4. The premixed mortar containing construction waste brick and tile fine aggregate according to claim 1, characterized in that: The raw materials include, by weight: 20 parts of cement, 20 parts of waste brick and tile fine aggregate, 10 parts of yellow sand, 20 parts of composite fine aggregate, 10 parts of waste brick and tile micro powder, 10 parts of fly ash, 5 parts of cellulose, 3 parts of modifier, 3 parts of water reducer and 20 parts of water.

5. A premixed mortar containing fine aggregates of construction waste bricks and tiles according to any one of claims 1 to 4, characterized in that: The composite fine aggregate is a composition of concrete fine aggregate and calcined coal gangue fine aggregate.

6. A premixed mortar containing fine aggregates of construction waste bricks and tiles according to any one of claims 1 to 4, characterized in that: The modifier is any combination of two or more of sodium chloride, potassium chloride, ammonium chloride, sodium sulfate, sodium phosphate, disodium phosphate or pentasodium triphosphate.

7. A premixed mortar containing fine aggregates of construction waste bricks and tiles according to any one of claims 1 to 4, characterized in that: The water reducing agent is a polycarboxylic acid series powder high efficiency water reducing agent.

8. A method for preparing the premixed mortar containing construction waste brick and tile fine aggregate according to any one of claims 1 to 4, characterized in that: The specific steps include: S1. Measuring of raw materials: First, the required weight portions of cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose, modifier, water reducing agent and water are measured respectively through batching equipment; S2, mixing treatment: adding the cement, waste brick and tile fine aggregate, yellow sand, composite fine aggregate, waste brick and tile powder, fly ash, cellulose and water weighed in step S1 into a mixing and stirring device in sequence, mixing and stirring at a speed of 500-800 r / min and a temperature of 55-60° C. for 30-50 min to obtain a primary mixture; S3, pressurized mixing: the primary mixed material obtained in step S2 is transferred to a pressurized mixing device, first sealed, then pressurized to 2.5-3.6 MPa in the silo, and mixed for 15-20 minutes to allow better affinity between the granular materials, and then taken out; S4, additive mixing: add the modifier and water reducing agent weighed in step S1 into a mixing and stirring device, and add the primary mixture after the pressurized mixing treatment in step S3 into the mixing and stirring device, mix and stir at 800-1000r / min and a temperature of 60-70°C for 1-2h to obtain a premixed mortar.

Images