Water-soluble coagulant for cement-based cementing material and preparation method of water-soluble coagulant

A technology of cementitious material and early setting agent, which is applied in the field of building materials, can solve the problems of lag in setting time and low early strength of cement cementitious materials, and achieve the effect of shortening the interval between initial setting and final setting.
CN104446084AInactive Publication Date: 2015-03-25HUBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUBEI UNIV OF TECH
Publication Date
2015-03-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a water-soluble coagulant for a cement-based cementing material and a preparation method. A solid solute part of the coagulant comprises raw materials in parts by weight as follows: 40-60 parts of a poly-silicic acid flocculating agent, 20-25 parts of an inorganic salt enhancer, 5-15 parts of a stabilizer and 1-5 parts of a dispersing agent. The prepared water-soluble coagulant is high in cost-performance ratio, and the actual engineering problem that the final coagulation time of the cement-based cementing material lags due to the lower temperature in winter and delayed coagulation of a polycarboxylate superplasticizer is solved on the basis of the theory and the nature of cement mineral hydration under the actual condition that the construction period is affected due to the fact that the concrete coagulation time is longer during construction in winter. Compared with like products on the market, the water-soluble coagulant has the advantages that the compatibility of the water-soluble coagulant with the polycarboxylate superplasticizer is higher, liquidity and slump retaining property indexes are not affected, and development of early strength of concrete and reduction of the cost of the superplasticizer are facilitated.
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Description

technical field

[0001] The invention belongs to the technical field of building materials and is used in winter water-reducing agent technology, in particular to a water-soluble early setting agent for cement-based cementitious materials and a preparation method for compounding with polycarboxylate water-reducing agent. Background technique

[0002] Water-soluble early setting agent for cement-based cementitious materials refers to an admixture that can improve the early strength of concrete or shorten the interval between initial setting and final setting or final setting time of cement-based cementitious materials. It is mostly used in winter or emergency repairs. The water-soluble early setting agent of cement-based cementitious materials has no significant effect on the strength of cement-based cementitious materials in the early, middle and late stages.

[0003] The same type of products in the market include products such as early strength agents, enhancers, and synerg...

Claims

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