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Preparation method of high-elasticity anti-cracking type building casting mortar

A construction and mortar technology, applied in the field of building materials, can solve problems such as poor crack resistance, and achieve the effects of improving elasticity and cohesion, improving strength and deformability, and being easy to mix evenly.

Inactive Publication Date: 2018-11-23
天津市昊鹏建材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of poor crack resistance in the prior art, and propose a method for preparing pouring mortar for high-elastic and crack-resistant buildings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for high-elasticity crack-resistant building pouring mortar, comprising the following steps:

[0021] S1. Crush the mixed elastomer, sieve it, put it in the aqueous solution of silane coupling agent, soak it for 100min, add it into the hot base asphalt with a temperature range of 160°C-165°C, mix it under high-speed shear for 90min, add Nano-bentonite, after mixing evenly, ultrasonic treatment for 25min to obtain modified nano-asphalt suspension;

[0022] S2, adding hydrochloric acid to the modified nano asphalt suspension, adjusting the pH to between 2.5-3.0, then adding an emulsifier, and grinding for 60 minutes in a colloid mill to obtain emulsified modified nano asphalt;

[0023] S3. Add 18 parts of emulsified modified nano asphalt, 95 parts of cement, 22 parts of fly ash, and 60 parts of fine sand into the mortar mixer, stir for 15 minutes, then add 4 parts of retarder, 1.5 parts of expansion agent, and 2.5 parts of water reducing agent. 2 par...

Embodiment 2

[0026] A preparation method for high-elasticity crack-resistant building pouring mortar, comprising the following steps:

[0027] S1. Crush the mixed elastomer, sieve it, put it in the aqueous solution of silane coupling agent, soak it for 100min, add it into the hot base asphalt with a temperature range of 160°C-165°C, mix it under high-speed shear for 90min, add Nano-bentonite, after mixing evenly, ultrasonic treatment for 25min to obtain modified nano-asphalt suspension;

[0028] S2, adding hydrochloric acid to the modified nano asphalt suspension, adjusting the pH to between 2.5-3.0, then adding an emulsifier, and grinding for 60 minutes in a colloid mill to obtain emulsified modified nano asphalt;

[0029] S3. Add 20 parts of emulsified modified nano-asphalt, 100 parts of cement, 22 parts of fly ash, and 60 parts of fine sand into the mortar mixer, stir for 15 minutes, then add 4 parts of retarder, 1.5 parts of expansion agent, and 2.5 parts of water reducing agent. 2 pa...

Embodiment 3

[0032] A preparation method for high-elasticity crack-resistant building pouring mortar, comprising the following steps:

[0033] S1. Crush the mixed elastomer, sieve it, put it in the aqueous solution of silane coupling agent, soak it for 100min, add it into the hot base asphalt with a temperature range of 160°C-165°C, mix it under high-speed shear for 90min, add Nano-bentonite, after mixing evenly, ultrasonic treatment for 25min to obtain modified nano-asphalt suspension;

[0034] S2, adding hydrochloric acid to the modified nano asphalt suspension, adjusting the pH to between 2.5-3.0, then adding an emulsifier, and grinding for 60 minutes in a colloid mill to obtain emulsified modified nano asphalt;

[0035] S3. Add 22 parts of emulsified modified nano-asphalt, 112 parts of cement, 22 parts of fly ash, and 60 parts of fine sand into the mortar mixer, stir for 15 minutes, then add 4 parts of retarder, 1.5 parts of expansion agent, and 2.5 parts of water reducing agent. 2 pa...

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Abstract

The invention discloses a preparation method of a high-elasticity anti-cracking type building casting mortar. The preparation method comprises the following steps of S1, crushing the mixed elastomer,screening, adding into a water solution with a silane coupling agent, soaking, adding into hot matrix asphalt, stirring, adding nanometer bentonite, and treating by ultrasonic waves, so as to obtain amodified nanometer asphalt suspension solution; S2, adding hydrochloric acid and an emulsifier into the modified nanometer asphalt suspension solution, and grinding by a colloid grinder, so as to obtain the emulsified modified nanometer asphalt; S3, adding the emulsified modified nanometer asphalt, cement, fly ash and fine sand into a mortar stirring machine, stirring, adding a set retarder, a swelling agent, a water reducing agent, a stabilizer and water, and stirring, so as to obtain the high-elasticity anti-cracking type building casting mortar. The high-elasticity anti-cracking type building casting mortar has the advantages that by adding the mixed elastomer and nanometer bentonite into the asphalt, the strength and deformation of the asphalt are improved; the mixed elastomer consists of multiple thermoplastic elastomers, so that the elasticity and viscosity of the mortar are improved, and the anti-cracking property of the building is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing pouring mortar for high-elastic and crack-resistant buildings. Background technique [0002] Mortar is the bonding substance used for bricklaying in buildings. It is composed of a certain proportion of sand and cementing materials and water. The freshly mixed ordinary mortar should have good workability, and the hardened mortar should have the required strength and cohesive force. At present, the widely used cement emulsified asphalt mortar mainly includes low elastic modulus cement asphalt mortar with static elastic modulus of 100-400MPa and high elastic modulus cement asphalt mortar with static elastic modulus of 7-10GPa, among which high elastic modulus cement asphalt mortar The elastic modulus is larger and the strength requirement is higher. Currently, the widely used cement asphalt mortar uses rubber as the elastic body, which can increase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B111/50C04B111/20
CPCC04B28/00C04B2201/50C04B2111/20C04B2111/503
Inventor 张起亮
Owner 天津市昊鹏建材股份有限公司
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