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A supramolecular anti-cracking concrete admixture and preparation method thereof

A concrete admixture and supramolecular technology, applied in the field of concrete admixtures, can solve the problems of easy cracking and water leakage of concrete, and achieve the effects of preventing cracking and water leakage, and improving crack resistance and anti-seepage performance

Active Publication Date: 2021-01-19
迈嘉尔(武汉)高新技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, one of the objects of the present invention is to provide a supramolecular anti-cracking concrete admixture, which can solve the problems of easy cracking and water leakage of concrete when added to concrete

Method used

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  • A supramolecular anti-cracking concrete admixture and preparation method thereof
  • A supramolecular anti-cracking concrete admixture and preparation method thereof
  • A supramolecular anti-cracking concrete admixture and preparation method thereof

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Effect test

Embodiment 1

[0051] The supramolecular anti-cracking concrete admixture in the present embodiment comprises the following components by mass percentage:

[0052]

[0053]

[0054] The preparation method of above-mentioned crack-resistant concrete admixture comprises the following steps:

[0055] (1) Heat deionized water to 40°C, add supramolecular compound PMOFS and retarder according to the formula, use ultrasonic synthesis and stir until the solution gradually turns dark green, and a mixed solution is obtained;

[0056] (2) add air-entraining agent and thickener to the mixed solution in turn, after stirring and mixing evenly, filter, take the filtrate, add water reducer and waterproofing agent and stir evenly, add supramolecular reinforcing agent at normal temperature and stir evenly, obtain The anti-cracking concrete admixture has a solid content of 43.2wt%.

Embodiment 2

[0058] The supramolecular anti-cracking concrete admixture in the present embodiment comprises the following components by mass percentage:

[0059]

[0060] The preparation method of above-mentioned crack-resistant concrete admixture comprises the following steps:

[0061] (1) Heat deionized water to 40°C, add supramolecular compound PMOFS and retarder according to the formula, use ultrasonic synthesis and stir until the solution gradually turns dark green, and a mixed solution is obtained;

[0062] (2) Add an air-entraining agent to the mixed solution in turn, stir and mix evenly, filter, take the filtrate, add water reducing agent and waterproofing agent and stir evenly, add the rust preventive agent to the mixed solution after heating, emulsify evenly and cool to normal temperature, add supramolecular reinforcing agent at normal temperature and stir evenly to obtain anti-cracking concrete admixture with a solid content of 41.7wt%.

Embodiment 3

[0064] The supramolecular anti-cracking concrete admixture in the present embodiment comprises the following components by mass percentage:

[0065]

[0066] The preparation method of above-mentioned crack-resistant concrete admixture comprises the following steps:

[0067] (1) Heating deionized water, adding supramolecular compound PMOFS and retarder according to the formula, using ultrasonic synthesis and stirring until the solution gradually turns dark green to obtain a mixed solution;

[0068] (2) Add an air-entraining agent and a thickener to the mixed solution in turn, stir and mix evenly, filter, take the filtrate, add a water reducer and stir evenly, add the rust preventive agent to the mixed solution after heating, and emulsify evenly Cool to normal temperature, add supramolecular reinforcing agent and stir evenly at normal temperature to obtain anti-cracking concrete admixture with solid content of 39.7wt%.

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Abstract

The invention provides a supermolecule anti-crack concrete admixture and a preparation method thereof. By adding three-dimensional network supermolecule compound PMOFS that has bioactivity and is synthesized from salicylaldehyde thiosemicarbazone and metal-oxygen clusters, and based on the air entrainment, water reduction and micro-expansion performance of the compound, the obtained supermoleculeanti-crack concrete admixture can greatly improve the anti-crack performance and seepage resistance of concrete, and can prevent concrete cracking and water leakage.

Description

technical field [0001] The invention belongs to the field of concrete admixtures, in particular to a supramolecular anti-cracking concrete admixture and a preparation method thereof. Background technique [0002] Ordinary concrete is made of cement as cementitious material, sand and stone as aggregate, mixed with water (with or without admixtures and admixtures) in a certain proportion, and has a certain structure after stirring, molding, curing and hardening. A strong structure or member. Cement is the main component of concrete, which determines the basic properties of concrete. Concrete admixtures can make up for and improve the lack of concrete performance, endow some new performance, and are an important part of concrete. [0003] Concrete admixtures have laid the foundation of modern concrete technology and become one of the indispensable components of concrete. Admixtures include water reducing agents, retarders, antifreeze agents, air-entraining agents, and rust in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C04B24/38C04B24/16
Inventor 叶晶凌鼎山方舟
Owner 迈嘉尔(武汉)高新技术发展有限公司
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