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Treatment agent for concrete waste slurry water and method for preparing premixed concrete from waste slurry water

A technology for ready-mixed concrete and concrete, applied in the field of building materials, can solve the problems of difficulty in direct utilization of waste water and waste slurry, and achieve the effects of simple and feasible preparation process, inhibition of agglomeration, and promotion of particle dispersion.

Active Publication Date: 2020-05-22
江西省建材科研设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a concrete waste slurry water treatment agent and a method for preparing ready-mixed concrete with waste slurry water. The waste slurry water treatment agent is added to the waste slurry water and concrete respectively, so as to solve the direct problem of existing waste water and waste slurry. Realize zero discharge of waste water and waste slurry in concrete enterprises by using difficult problems

Method used

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  • Treatment agent for concrete waste slurry water and method for preparing premixed concrete from waste slurry water
  • Treatment agent for concrete waste slurry water and method for preparing premixed concrete from waste slurry water
  • Treatment agent for concrete waste slurry water and method for preparing premixed concrete from waste slurry water

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Effect test

Embodiment 1

[0038] A concrete waste slurry water treatment agent is composed of a hydration inducing composition A and a waste slurry water dispersion composition B and used together.

[0039] The hydration-inducing composition A is made of the following raw materials in parts by mass: 8 parts of inorganic salt (5 parts of calcium formate, 3 parts of sodium silicate), 6 parts of nanocrystalline nucleus early strengthening agent, polycarboxylate superplasticizer 1 part, 0.5 parts of retarder (sodium citrate), 3 parts of polyethylene glycol (molecular weight 400), 1.2 parts of diethylene glycol, 0.02 parts of sodium glutamate, 0.03 parts of cetyltrimethylammonium bromide, 0.02 parts of thickener (polyvinyl alcohol), 3 parts of complex alcohol amines (0.6 parts of triethanolamine, 2.4 parts of diethanol monoisopropanolamine) and 77.23 parts of water; the preparation method is as follows: mix inorganic salt, sodium glutamate and Add 70% water into the mixing tank, stir for 20~30min; add thick...

Embodiment 2

[0042] A concrete waste slurry water treatment agent is composed of a hydration inducing composition A and a waste slurry water dispersion composition B and used together.

[0043] The hydration-inducing composition A is made of the following raw materials by mass: 4 parts of inorganic salt (4 parts of calcium formate), 10 parts of nano-crystal nucleus early strength agent, 0.5 part of polycarboxylate superplasticizer, retarder (sodium tripolyphosphate) 0.3 parts, polyethylene glycol (molecular weight 200) 3 parts, diethylene glycol 1 part, sodium glutamate 0.03 parts, cetyltrimethylammonium bromide 0.04 parts, thickener ( 0.03 parts of hydroxypropyl methylcellulose), 4 parts of complex alcohol amines (0.8 parts of triethanolamine, 0.8 parts of triisopropanolamine, 2.4 parts of diethanol monoisopropanolamine) and 77.1 parts of water; the preparation method is as follows: Add inorganic salt, sodium glutamate and 70% water into the mixing tank, stir for 20~30min; add thickener, ...

Embodiment 3

[0046] A concrete waste slurry water treatment agent is composed of a hydration inducing composition A and a waste slurry water dispersion composition B and used together.

[0047] The hydration-inducing composition A is made of the following raw materials in parts by mass: 5 parts of inorganic salt (3 parts of calcium hydroxide, 2 parts of sodium silicate powder), 8 parts of nanocrystalline nucleus early strength agent, polycarboxylic acid water-reducing agent 1 part of preservative, 1 part of retarder (sodium citrate), 2 parts of polyethylene glycol (molecular weight 400), 1 part of diethylene glycol, 0.04 part of sodium glutamate, 0.04 part of cetyltrimethylammonium bromide 0.02 parts of thickener (maltodextrin), 5 parts of complex alcohol amines (1 part of triethanolamine, 1 part of triisopropanolamine, 3 parts of diethanol monoisopropanolamine) and 76.9 parts of water; the preparation method is as follows : Add inorganic salt, sodium glutamate and 70% water into the mixin...

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Abstract

The invention provides a composition for treating concrete waste slurry water. The composition is composed of 15-40 parts of a hydration inducing composition A and 1.0-3.5 parts of a waste slurry water dispersion composition B. The hydration inducing composition A comprises 3-15% of inorganic salt, 3-10% of a nanocrystalline nucleus early strength agent, 2-8% of composite alcohol amine, 2 to 5 percent of polyethylene glycol, 1 to 5 percent of diethylene glycol, 0.1 to 5 percent of a polycarboxylate water reducing agent, 0.05 to 2 percent of a retarder, 0 to 1 percent of a thickener, 0.02 to 0.05 percent of sodium glutamate, and 0.03 to 0.05 percent of hexadecyl trimethyl ammonium bromide, with the balance being water. The waste slurry water dispersion composition B comprises 3-10% of a dispersing agent, 2 to 9 percent of compound alcohol amine, and 6 to 12 percent of a retarder, with the balance being water. The invention also provides a method for preparing premixed concrete by usingthe waste slurry water. According to the composition and the method, the problem that existing wastewater and waste slurry are difficult to directly utilize can be solved, zero emission of the wastewater and the waste slurry of a concrete enterprise is achieved, and the strength of concrete can be guaranteed under the condition that 10-30 kg of a cementing material is reduced for each cubic meterof concrete.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete waste slurry water treatment agent and a method for preparing ready-mixed concrete from the waste slurry water, which can realize zero discharge of waste water and waste slurry in concrete enterprises. Background technique [0002] In recent years, with the country's large investment in infrastructure construction, the amount of concrete has increased, and the number of ready-mixed concrete production enterprises has gradually increased. However, the sewage discharge situation of ready-mixed concrete production enterprises is still severe. Surveys show that every 1,000 cubic meters of concrete produced will produce at least 12 cubic meters of waste water and waste slurry. Wastewater and waste slurry mainly come from: cleaning production mixing equipment, transport vehicles, and pumping equipment; waste water and slurry generated from waste concre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B24/16C04B24/38C04B24/12
CPCC04B40/0039C04B24/04C04B22/00C04B24/06C04B24/28C04B24/02C04B24/123C04B24/005C04B24/2623C04B24/122C04B2103/302C04B2103/0068C04B22/16C04B24/16C04B24/10C04B24/383C04B22/064C04B24/38
Inventor 邹小平刘成舟鲍伟平易鹏张建强柴天红习海平万佳俊
Owner 江西省建材科研设计院有限公司
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