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Organosilicone waterproof agent for multifunctional high-performance concrete

A high-performance concrete and organosilicon technology, applied in the field of building materials, can solve the problems of single function of liquid waterproofing agent, waterproofing agent and expansion agent cannot meet the needs of the development of the situation, etc., and achieve the effect of reducing slump loss

Pending Publication Date: 2016-07-13
WENDENG LANDAO ARCHITECTURAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current liquid waterproofing agent has a single function. For example, pumping agent or water reducing agent and other admixtures must be added in concrete pumping construction.
However, waterproof agents and expansion agents with a single waterproof function can no longer meet the needs of the development of the situation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Organosilicon 31%; naphthalenesulfonic acid formaldehyde condensate sodium salt 17%; triethanolamine 1.3%; sodium lignosulfonate or calcium lignosulfonate 5%; citric acid 0.8%; sodium thiosulfate 12%; water balance . The 7-day compressive strength of the obtained product is not less than 168, and the 28-day compressive strength is not less than 137. Penetration ratios are lower than 25%. The compressive strength loss ratio is not greater than 42. The mass loss rate is not greater than 54.

Embodiment 2

[0020] Organic silicon 22%; naphthalenesulfonic acid formaldehyde condensate sodium salt 15%; triethanolamine 1.6%; sodium lignosulfonate or calcium lignosulfonate 8%; citric acid 1.2%; sodium thiosulfate 9%; water balance . The 7-day compressive strength is not less than 170, and the 28-day compressive strength is not less than 139. The penetration ratios are all lower than 22%. The compressive strength loss ratio is not greater than 47. The mass loss rate is not more than 56.

Embodiment 3

[0022] Organic silicon 20%; naphthalenesulfonic acid formaldehyde condensate sodium salt 20%; triethanolamine 0.9%; sodium lignosulfonate or calcium lignosulfonate 5%; citric acid 1.2%; sodium thiosulfate 9%; water balance . The 7-day compressive strength is not less than 171, and the 28-day compressive strength is not less than 136. Penetration ratios are all lower than 28%. The compressive strength loss ratio is not greater than 49. The mass loss rate is not greater than 66.

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PUM

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Abstract

The invention discloses an organosilicone waterproof agent for multifunctional high-performance concrete.The organosilicone waterproof agent is composed of organosilicone, naphthalene sulfonated formaldehyde condensate sodium salt, triethanolamine, sodium lignin sulfonate or calcium lignin sulfonate, citric acid, sodium thiosulfate and water.The organosilicone waterproof agent is a multifunctional liquid-state waterproof agent integrating efficient waterproofness, water reduction and pumping and having slight expansion effect and can meet the technical requirements on pumping construction of large-flow waterproof concrete.The organosilicone waterproof agent can remarkably improve early strength of mortar and concrete, flowability and plasticity maintaining capability and is suitable for waterproof mortar, waterproof concrete and pumping concrete of underground engineering, dykes and dams, building engineering and traffic engineering.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a silicone waterproofing agent for concrete. Background technique [0002] Although there are many types of waterproofing agents used in the construction market, they are mainly divided into two types: powder and liquid waterproofing agents. At present, the domestic multifunctional concrete waterproofing agent is all powder waterproofing agent and its mixing amount is relatively high, accounting for about 8-12% of the weight of cement. Powder waterproofing agent and expansion agent are mixed into concrete mainly to play the role of anti-cracking and waterproofing. Known powder waterproofing agents have many deficiencies in application. For example, when using pumping to construct concrete, other admixtures, such as pumping agents and water reducing agents, must be compounded to meet the technical requirements of construction. In addition, the need for special personnel to feed...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B103/65
CPCC04B40/0039C04B2103/65C04B24/42C04B24/226C04B24/122C04B24/18C04B24/06C04B22/14
Inventor 蔡超
Owner WENDENG LANDAO ARCHITECTURAL ENG CO LTD
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