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High-permeable retardation type concrete additive and preparation method thereof

A retarding type, concrete technology, applied in the field of building materials, can solve the problems of easy shrinkage, high construction difficulty, low impact and wear resistance, etc.

Inactive Publication Date: 2016-04-20
萧县良宇混凝土有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a high-permeability retarding concrete additive and a preparation method thereof, which overcomes the problems of low impact and wear resistance, high heat of hydration, easy dry shrinkage, uncompacted concrete, hardening and triggering of existing concrete technology. Disadvantages of high construction difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The high water-permeable retarding concrete additive in this embodiment is made of the following raw materials in parts by weight: 110 parts of water, 80 parts of bentonite, 50 parts of gypsum, 12 parts of polyvinyl alcohol, 10 parts of urea, 50 parts of soluble starch, compound modified Agent (amino silane: epoxy silane = 1:1) 15 parts, sodium alkyl sulfonate 3 parts, sodium hexametaphosphate 2 parts, naphthalene-based water reducer 8 parts.

[0025] The preparation method comprises the following steps:

[0026] (1) take each component by above-mentioned weight percentage stand-by;

[0027] (2) Grind bentonite, gypsum, urea, and soluble starch in a pulverizer at a speed of 150r / min until the particle size is 1.5mm, then heat the pulverized material at 700°C for 3 hours and cool Continue grinding in the pulverizer to a particle size of 0.8mm;

[0028] (3) Add the mixture prepared in step (2) to the agitator, then add water, polyvinyl alcohol, composite modifier, sodiu...

Embodiment 2

[0030] The high-permeability retarding concrete additive in this embodiment is made of the following raw materials in parts by weight: 120 parts of water, 90 parts of diatomaceous earth, 65 parts of gypsum, 21 parts of polyvinyl alcohol, 14 parts of urea, 55 parts of soluble starch, compound Modifier (amino silane: epoxy silane = 1:2) 18 parts, sodium alkyl sulfonate 4 parts, borax 3 parts, lignin superplasticizer 11 parts. The preparation method comprises the steps of:

[0031] (1) take each component by above-mentioned weight percentage stand-by;

[0032] (2) Grind diatomaceous earth, gypsum, urea, and soluble starch in a pulverizer at a speed of 200r / min until the particle size is 1.8mm, and then heat the pulverized material at 750°C for 3 hours , continue to grind in the pulverizer after cooling until the particle size is 1.0mm;

[0033] (3) Add the mixture prepared in step (2) to the agitator, then add water, polyvinyl alcohol, composite modifier, sodium alkylsulfonate,...

Embodiment 3

[0035] The high water permeability retarding concrete additive in this embodiment is made of the following raw materials in parts by weight: 130 parts of water, 100 parts of expanded perlite, 80 parts of gypsum, 30 parts of polyvinyl alcohol, 20 parts of urea, 70 parts of soluble starch, compound Modifier (amino silane: epoxy silane = 1:3) 25 parts, sodium alkyl sulfonate 6 parts, sodium tripolyphosphate 5 parts, aliphatic water reducer 14 parts.

[0036] The preparation method comprises the steps of:

[0037] (1) take each component by above-mentioned weight percentage stand-by;

[0038] (2) Grind expanded perlite, gypsum, urea, and soluble starch in a pulverizer at a speed of 250r / min until the particle size is 2.0mm, and then heat the pulverized material at 800°C for 3 hours , continue to grind in the pulverizer after cooling until the particle size is 1.2mm;

[0039] (3) The mixture prepared in step (2) is added to the agitator, then water, polyvinyl alcohol, composite m...

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PUM

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Abstract

The invention discloses a high-permeable retardation type concrete additive and a preparation method thereof, and relates to the technical field of building materials. The concrete additive is prepared from water, a superfine porous material, gypsum, polyvinyl alcohol, urea, soluble starch, a compound modifying agent, alkyl sodium sulfonate, a dispersing agent and a water reducing agent. The high-permeable retardation type concrete additive has the both water reduction function and retardation function and can significantly improve the durability and stability of concrete members and structures.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a highly permeable retarding concrete additive and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the accelerated pace of urban construction, the urban ground has gradually been covered by buildings and concrete pavement, and the area of ​​permeable vegetation has become less and less. The impermeable surface has brought many negative effects to the ecological cycle of the city. Influence. Due to the lack of water permeability on the ground, rainwater cannot penetrate into the ground, resulting in the lack of exchange of heat and water in the city, which makes it difficult to regulate the temperature and humidity of the city normally, resulting in the urban "heat island phenomenon". At the same time, since rainwater cannot penetrate into the ground in a short period of time, a large amount of rainwater...

Claims

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Application Information

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IPC IPC(8): C04B24/40C04B103/30C04B103/22
CPCC04B40/0039C04B2103/22C04B2103/302C04B22/143C04B24/2623C04B24/126C04B24/38C04B24/16C04B2103/408C04B2103/0068C04B22/16C04B22/0013C04B24/00C04B24/24C04B24/08C04B24/40C04B14/104C04B14/047C04B14/08C04B14/185
Inventor 陶根月
Owner 萧县良宇混凝土有限责任公司
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