Secondary fluidization first-aid agent for concrete and preparation method of secondary fluidization first-aid agent

By adopting a concrete secondary fluidization first aid agent composed of a variety of water reducing agents, hydration heat inhibitors and penetrants, the problems of poor secondary fluidization effect and excessive hydration heat in the prior art are solved, and the effects of efficient stirring, fluidization and reducing hydration heat are achieved, and the construction quality and durability of concrete are improved.

CN119638255APending Publication Date: 2025-03-18WUXI YONGTAI CONCRETE CO LTD
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Patent Information

Application Number
CN202411918000.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The existing concrete secondary fluidizing agent has poor fluidization effect when used, resulting in excessive loss of concrete slump and excessive hydration heat, which can easily cause temperature differences and cracks, and low stirring efficiency, which cannot meet construction requirements.

Method used

A secondary fluidization first aid agent composed of water-reducing polycarboxylic acid-based water-reducing agent, sustained-release polycarboxylic acid-based water-reducing agent, amino water-reducing agent, hydration heat inhibitor, aqueous penetration agent, viscosity reducing agent, defoaming agent, gas induction agent and water is adopted to improve the fluidization effect and stirring efficiency of concrete by optimizing the formulation and stirring process, and reduce the hydration heat and viscosity of the concrete system.

Benefits of technology

It has achieved short secondary fluidization time, strong mixing effect, reduced hydration heat peak, delayed hydration heat release time, and reduced concrete system viscosity. It is suitable for stirring, pumping, vibration and surface collection operations, and improved the construction quality and durability of concrete.

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Abstract

The invention discloses a secondary fluidization first-aid agent for concrete and a preparation method of the secondary fluidization first-aid agent, and relates to the field of constructional engineering materials. The secondary fluidization emergency agent is prepared from the following components in parts by weight: 180 to 220 parts of water reducing type polycarboxylic acid water reducing agent mother liquor, 90 to 110 parts of slow release type polycarboxylic acid water reducing agent mother liquor, 27 to 33 parts of amino water reducing agent, 9 to 11 parts of hydration heat inhibitor, 9 to 11 parts of water-based penetrating agent, 27 to 33 parts of viscosity reducer, 0.018 to 0.022 part of defoaming agent, 0.18 to 0.22 part of air entraining agent and 600 to 640 parts of water. The secondary fluidization emergency agent for the concrete can effectively reduce hydration heat, and has the advantages of being small in dosage, good in water reducing effect, full in slurry, low in viscosity, small in secondary slump loss, high in expansion degree, appropriate in initial setting time, low in strength loss after secondary fluidization of the concrete and the like.
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