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Water-washed sandstone treating agent and method for preparing concrete

A concrete and water washing technology, applied in the field of building materials, can solve problems such as the negative impact of concrete performance

Active Publication Date: 2021-03-05
江苏超力建材科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although water washing of sand and gravel can effectively remove the high mud content in sand and gravel, some chemicals remaining in sand and gravel after water washing have a significant negative impact on the performance of concrete in the later stage

Method used

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  • Water-washed sandstone treating agent and method for preparing concrete
  • Water-washed sandstone treating agent and method for preparing concrete
  • Water-washed sandstone treating agent and method for preparing concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] A water-washing gravel treatment agent is composed of composition A and composition B and used together. The composition A is composed of the following raw materials in parts by mass: 1.5 parts of inorganic salt (1 part of ferrous sulfate, 0.5 part of ferrous ammonium sulfate), 5 parts of polyethylene glycol, wherein (polyethylene glycol molecular weight 200) 2 Parts, 3 parts of polyethylene glycol (polyethylene glycol molecular weight 400), 5 parts of polyols (2 parts of ethylene glycol, 3 parts of diethylene glycol), and the remaining content is water.

[0076] The preparation method is as follows: add polyethylene glycol, polyol and water into a stirring tank and stir for about 30 minutes, add inorganic salt while stirring, and continue stirring for 10-30 minutes until the inorganic salt is completely dissolved to obtain composition A.

[0077] The composition B consists of the following raw materials in parts by mass: 5 parts of metal salt (5 parts of calcium format...

Embodiment 2

[0080]A water-washing gravel treatment agent is composed of composition A and composition B and used together. The composition A is composed of the following raw materials in parts by mass: 7.2 parts of inorganic salts (0.2 parts of ferrous sulfate, 5 parts of sodium sulfite, 2 parts of sodium pyrosulfite), 5 parts of polyethylene glycol (molecular weight 400), 5 parts of polyols ( 2 parts of ethylene glycol, 3 parts of diethylene glycol), 82.8 parts of water.

[0081] The preparation method is as follows: add polyethylene glycol, polyol and water into a stirring tank and stir for about 30 minutes, add inorganic salt while stirring, and continue stirring for 10-30 minutes until the inorganic salt is completely dissolved to obtain composition A.

[0082] The composition B is composed of the following raw materials in parts by mass: 7 parts of metal salt (5 parts of calcium nitrate, 2 parts of sodium silicate), 10 parts of dispersant (10 parts of naphthalene-based water reducer,...

Embodiment 3

[0085] A water-washing gravel treatment agent is composed of composition A and composition B and used together. The composition A is composed of the following raw materials in parts by mass: 12 parts of inorganic salt (5 parts of potassium ferric oxalate, 5 parts of potassium formate, 2 parts of potassium sulfite), 5 parts of polyethylene glycol (molecular weight 400), polyol 5 parts (2 parts of ethylene glycol, 2 parts of glycerol, 1 part of diethylene glycol), 78 parts of water.

[0086] The preparation method is as follows: add polyethylene glycol, polyol and water into a stirring tank and stir for about 30 minutes, add inorganic salt while stirring, and continue stirring for 10-30 minutes until the inorganic salt is completely dissolved to obtain composition A.

[0087] The composition B is composed of the following raw materials in parts by mass: 5 parts of metal salt (3 parts of calcium formate), 5 parts of dispersant (5 parts of polycarboxylate superplasticizer, solid c...

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Abstract

The invention provides a composition A, a composition B and a water-washed sandstone treating agent. The composition A comprises the following components by weight percentage: 0.1-20% of inorganic salt, 0.1-10% of polyethylene glycol represented by a formula (I): HO(CH2CH2O)nH (I), and 0-10% of a polyol represented by a formula (II): HO-R1-Y-R2-OH (II), wherein n is an integer of 3 or more. The composition B comprises the following components in percentage by weight: 0-15% of metal salt, 2-10% of dispersing agent, 1-10% of composite alcohol amine, 2-15% of retarder, 0-2% of air entraining agent, 0-1% of thickening agent, 0-5% of nanocrystalline core early strength agent, and water. The water-washed sandstone treating agent comprises the composition A or comprises the composition A and thecomposition B. According to the prepared treating agent, the finished product is low in toxicity and pollution, the slump and compressive strength of the water-washed sandstone concrete can be remarkably improved through matching of the composition A and the composition B, and the negative performance influence of 70-100% water-washed sandstone concrete can be remarkably reduced.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a water-washed sand treatment agent and a method for preparing concrete. Background technique [0002] With the shortage of natural resources, the river sand resources used for building materials and concrete are decreasing day by day, and the amount of machine-made sand and gravel is increasing rapidly every year, and there is a trend of machine-made sand replacing river sand gradually. Compared with river sand, machine-made sand has sufficient raw materials and low price. With the massive mining of river sand, resources are gradually scarce. In recent years, the mining of river sand has been restricted for environmental protection and ecological sustainability, resulting in a shortage of sand and gravel and rising prices. The emergence of machine-made sand has alleviated the shortage of sand and gravel in the market. Machine-made sand refers to rock part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B20/10C04B14/02C04B14/06C04B28/00
CPCC04B40/0039C04B20/107C04B14/02C04B14/06C04B28/00C04B22/142C04B24/32C04B24/026C04B24/04C04B2103/408C04B2103/22C04B2103/304C04B24/122C04B24/383C04B22/14C04B22/085C04B22/08C04B22/12C04B24/06C04B2103/10C04B20/1048C04B20/1022C04B20/1037
Inventor 赵韧黄立军佟莉
Owner 江苏超力建材科技有限公司
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