High durable underwater non-dispersible concrete flocculant

A concrete and flocculant technology, applied in the field of civil engineering and construction materials, to achieve significant technical and economic benefits, good filling and self-compacting properties, and solve the effect of long coagulation time

Inactive Publication Date: 2018-06-26
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, developed countries such as Europe and the United States have not formulated regulations and standards for underwater non-dispersible concrete, while Germany, Japan and other countries only have non-dispersible agents and test methods for underwater non-dispersible concrete.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Crush each raw material and mix well for later use

[0038] 500 parts by weight of cement;

[0039] 6 parts by weight of high-performance water reducer;

[0040] 50 parts by weight of a mixture of metakaolin and silica fume in equal proportions,

[0041] Silicon carbide sand activated carbon and ground ore powder are mixed in equal proportions with 30 parts by weight;

[0042] The amount of flocculant added to the concrete is 2.5 parts by weight;

[0043] Wherein, the flocculant component includes:

[0044] Polyacrylamide solution and polydimethyldiallylammonium chloride solution are mixed in equal proportions by 35 parts by weight;

[0045] 0.05 parts by weight of sodium lauryl sulfate,

[0046] 12 parts by weight of concrete superplasticizer;

[0047] 5 parts by weight of slaked lime powder;

[0048] 0.5 parts by weight of vitamin ether;

[0049] 0.2 parts by weight of cationic etherifying agent;

[0050] 0.05 parts by weight of hydroxyethyl cellulose, th...

Embodiment 2

[0054] (1) Crush each raw material and mix well for later use

[0055] 500 parts by weight of cement;

[0056] 6 parts by weight of high-performance water reducer;

[0057] 40 parts by weight of a mixture of metakaolin and silica fume in equal proportions,

[0058] Silicon carbide sand activated carbon and ground ore powder are mixed in equal proportions with 35 parts by weight;

[0059] The amount of flocculant added to the concrete is 2.5 parts by weight;

[0060] Wherein, the flocculant component includes:

[0061] The polyacrylamide solution and the polydimethyldiallylammonium chloride solution are mixed in equal proportions by 30 parts by weight;

[0062] 10 parts by weight of concrete superplasticizer;

[0063] 6 parts by weight of slaked lime powder;

[0064] Vitamin ether 0.1 part by weight;

[0065] Cationic etherification agent 0.3 parts by weight; molecular weight greater than 20Da.

[0066] 0.05 parts by weight of hydroxypropyl methylcellulose.

[0067] Th...

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Abstract

The invention discloses a durable underwater non-dispersible concrete flocculant. A preparation method of the durable underwater non-dispersible concrete flocculant comprises mixing and grinding a polyacrylamide solution, a polydimethyldiallyl ammonium chloride solution, sodium lauryl sulfate and a concrete super plasticizer according to a certain ratio and carrying out detection through the DLT 5117-2000 Underwater Dispersion Concrete Test Regulations. The durable underwater non-dispersible concrete has high curing efficiency, good hardening strength, a high water reduction rate of 20% and good concrete cohesiveness, is easy to stir, has good anti-freezing durability, is conducive to the construction of large-volume concrete, significantly reduces concrete shrinkage, has good product stability, prevents layering in long-term storage and prevents precipitation phenomenon.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and construction materials, and in particular relates to a high-durability underwater non-dispersible concrete flocculant. Background technique [0002] Ordinary concrete is mainly composed of cement, water, sand, stones and admixtures, while the most important thing for underwater non-dispersible concrete is to add an admixture - underwater non-dispersible agent, that is, flocculant. In order to formulate underwater non-dispersible concrete with good performance, it is necessary to make a reasonable selection of its component materials. [0003] At present, developed countries such as Europe and the United States have not formulated regulations and standards for underwater non-dispersible concrete, while Germany, Japan and other countries only have non-dispersant agents and test methods for underwater non-dispersible concrete. [0004] In order to prepare underwater non-dispersible con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B24/38
CPCC04B40/0039C04B28/00C04B24/2652C04B24/2682C04B24/16C04B2103/32C04B22/064C04B24/383C04B2103/302C04B14/106C04B18/146C04B14/324C04B14/022C04B18/12
Inventor 赵岩张庆亮张崇凤
Owner DALIAN UNIV OF TECH
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