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Supermolecule anti-crack concrete admixture and preparation method thereof

A concrete admixture and supramolecular technology, applied in the field of concrete admixture, can solve the problems of easy cracking and water leakage of concrete, and achieve the effects of prolonging construction operation time, improving crack resistance and anti-seepage performance, and reducing slump loss Effect

Active Publication Date: 2018-01-19
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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  • Supermolecule anti-crack concrete admixture and preparation method thereof
  • Supermolecule anti-crack concrete admixture and preparation method thereof
  • Supermolecule anti-crack concrete admixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The supramolecular anti-cracking concrete admixture in this embodiment includes the following components in terms of mass percentage:

[0052]

[0053]

[0054] The preparation method of the above-mentioned anti-cracking concrete admixture includes the following steps:

[0055] (1) Heat deionized water to 40°C, add the supramolecular compound PMOFS and retarder according to the formula, synthesize by ultrasonic wave and stir until the solution gradually turns dark green to obtain a mixed liquid;

[0056] (2) Add the air-entraining agent and the thickening agent to the mixed liquid in sequence, stir and mix evenly, filter, take the filtrate, add the water reducing agent and the water-repellent agent and stir evenly, add the supramolecular reinforcing agent and stir evenly at room temperature to obtain The anti-crack concrete admixture, the solid content is 43.2wt%.

Embodiment 2

[0058] The supramolecular anti-cracking concrete admixture in this embodiment includes the following components in terms of mass percentage:

[0059]

[0060] The preparation method of the above-mentioned anti-cracking concrete admixture includes the following steps:

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

[0062] (2) Add the air-entraining agent to the mixed liquid in sequence, stir and mix evenly, filter, take the filtrate, add the water reducing agent and the water-repellent agent and stir evenly, add the rust inhibitor to the mixed liquid after heating, emulsify and cool down At room temperature, the supramolecular reinforcing agent is added and stirred evenly at room temperature to obtain an anti-cracking concrete admixture with a solid content of 41.7% by weight.

Embodiment 3

[0064] The supramolecular anti-cracking concrete admixture in this embodiment includes the following components in terms of mass percentage:

[0065]

[0066] The preparation method of the above-mentioned anti-cracking concrete admixture includes the following steps:

[0067] (1) Heat the deionized water, add the supramolecular compound PMOFS and the retarder according to the formula, synthesize by ultrasonic wave and stir until the solution gradually turns dark green to obtain a mixed liquid;

[0068] (2) Add the air-entraining agent and the thickening agent to the mixed liquid in sequence, stir and mix uniformly, filter, take the filtrate, add the water reducing agent and stir evenly, add the rust inhibitor to the mixed liquid after heating, and emulsify it evenly Cooling to normal temperature, adding supramolecular reinforcing agent at normal temperature and mixing uniformly to obtain an anti-cracking concrete admixture with a solid content of 39.7% by weight.

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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, and specifically relates to a supramolecular anti-cracking concrete admixture and a preparation method thereof. Background technique [0002] Ordinary concrete is made of cement as cementing material, sand and stone as aggregates, mixed with water (with or without additives and admixtures) in a certain proportion, and it has a certain structure after mixing, forming, curing and hardening. Strength of the structure or member. Cement is the main component of concrete and determines the basic properties of concrete. Concrete admixtures can make up for and improve the shortcomings of concrete performance and give some new properties. It is an important part of concrete. [0003] Concrete admixtures have laid the foundation of modern concrete technology and have become an indispensable component of concrete. The admixtures include water reducer, retarder, antifreeze, air-entraining agent and rust inhibit...

Claims

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Application Information

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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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