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Environmentally friendly high impermeability and anti-cracking agent

An anti-cracking agent and high-resistance technology, which is applied in the field of building materials, can solve the problems that the anti-cracking performance and impermeability performance need to be improved, and cannot adapt to the development of concrete strength, so as to improve the compactness of concrete, compensate for concrete shrinkage, and improve The effect of anti-permeability and anti-crack performance

Active Publication Date: 2020-09-01
贵州万为金科特种建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of expansive agent still cannot adapt to the strength development of concrete, etc., and the crack resistance and impermeability of concrete need to be improved.

Method used

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  • Environmentally friendly high impermeability and anti-cracking agent
  • Environmentally friendly high impermeability and anti-cracking agent
  • Environmentally friendly high impermeability and anti-cracking agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]Raw materials (parts by weight) of environmental protection high impermeability and anti-cracking agent: 20 parts of expanded clinker, 30 parts of anhydrite, 25 parts of calcined coal gangue, 15 parts of zeolite powder, 3 parts of magnesium oxide, 3 parts of water-retaining agent, 2 parts of water-reducing agent 1 part, 1 part of polyethylene glycol, 0.5 part of sodium gluconate, and 0.5 part of sodium stearate.

[0049] The water retaining agent is methyl cellulose.

[0050] The water reducer is a polycarboxylate water reducer.

[0051] The present invention also provides a preparation method of an environment-friendly high impermeability and anti-cracking agent, comprising the following steps:

[0052] (1) Dry the expanded clinker, anhydrite, calcined coal gangue, zeolite powder, and magnesium oxide at 105°C for 3 hours;

[0053] (2) Add the dried raw materials in the step (1) to a mill and mix and grind to 300 mesh to obtain a mixed powder;

[0054] (3) Add water-r...

Embodiment 2

[0056] Raw materials (parts by weight) of environmental protection high impermeability and anti-cracking agent: 20 parts of expanded clinker, 30 parts of anhydrite, 25 parts of calcined coal gangue, 15 parts of modified zeolite powder, 3 parts of magnesium oxide, 3 parts of water-retaining agent, water-reducing agent 2 parts of agent, 1 part of polyethylene glycol, 0.5 part of sodium gluconate, and 0.5 part of sodium stearate.

[0057] The water retaining agent is methyl cellulose.

[0058] The water reducer is a polycarboxylate water reducer.

[0059] The preparation method of described modified zeolite powder comprises the following steps:

[0060] (1) Place the zeolite powder in a muffle furnace, roast at 500°C for 3 hours, cool naturally to room temperature and pass through a 300-mesh sieve to obtain activated zeolite powder;

[0061] (2) Mix activated zeolite powder and 0.5mol / L titanium sulfate aqueous solution at a solid-to-liquid ratio of 1g: 15mL, stir at 25°C at 20...

Embodiment 3

[0078] Raw materials (parts by weight) of environmental protection high impermeability and anti-cracking agent: 20 parts of expanded clinker, 30 parts of anhydrite, 25 parts of calcined coal gangue, 15 parts of modified zeolite powder, 3 parts of magnesium oxide, 3 parts of water-retaining agent, water-reducing agent 2 parts of agent, 1 part of polyethylene glycol, 0.5 part of sodium gluconate, and 0.5 part of sodium stearate.

[0079] The water retaining agent is hydroxypropyl methylcellulose.

[0080] The water reducer is a polycarboxylate water reducer.

[0081] The preparation method of described modified zeolite powder comprises the following steps:

[0082] (1) Place the zeolite powder in a muffle furnace, roast at 500°C for 3 hours, cool naturally to room temperature and pass through a 300-mesh sieve to obtain activated zeolite powder;

[0083] (2) Mix activated zeolite powder and 0.5mol / L titanium sulfate aqueous solution at a solid-to-liquid ratio of 1g: 15mL, stir ...

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Abstract

The invention discloses an environmentally-friendly high-anti-seepage anti-cracking agent. The anti-cracking agent comprises the following raw materials: expanded clinker, anhydrite, calcined coal gangue, zeolite powder, magnesium oxide, a water retaining agent, a water reducing agent, polyethylene glycol, sodium gluconate and sodium stearate. The environmentally-friendly high-anti-seepage anti-cracking agent provided by the invention has the functions of cracking resistance, seepage resistance, compensating shrinkage and the like, effectively improves compactness of concrete, and compensatesshrinkage of the concrete, thereby improving the anti-seepage anti-cracking performance; and at the same time, the high-anti-seepage anti-cracking agent provided by the invention is non-toxic and harmless, has no rusting effect on reinforcing steel bars, is friendly to the environment, and meets the increasing environmental protection demand.

Description

technical field [0001] The invention relates to an environment-friendly high impermeability and anti-cracking agent, which belongs to the technical field of building materials. Background technique [0002] For concrete-based buildings, since the concrete itself will shrink, and the external temperature change will also affect the building, it will cause cracks in the concrete-based building. This is because the volume of concrete shrinks in the initial stage of setting or during the hardening process, and shrinkage stress is generated inside the structure. When the stress exceeds the tensile strength of the concrete, it will cause the concrete to crack and form shrinkage cracks. In order to prevent and alleviate the temperature shrinkage cracks of super-long concrete structures, it is a routine measure to effectively install the post-cast belt, but the post-cast belt prolongs the construction period, and the lapping, welding and cleaning of the broken steel bars all bring c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B20/02
CPCC04B20/023C04B40/0039C04B22/142C04B22/143C04B18/12C04B14/047C04B22/066C04B24/32C04B24/10C04B24/085C04B24/383C04B24/24
Inventor 罗伍平颜士为颜旭青彭祥明
Owner 贵州万为金科特种建材有限公司
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