Cement concrete curing method

Abstract

The invention discloses a cement concrete curing method which is characterized in that: concrete shrinkage reducing solution is directly sprayed or coated on the concrete surface during curing process; when no liquid shrinkage reducing solution remains on the concrete surface, concrete curing agent is sprayed on the concrete surface. In the method, the shrinkage reducing solution is firstly sprayed, and then the concrete curing agent is sprayed, therefore the efficacy loss situation caused by mutual interference of the shrinkage reducing agent and curing agent is avoided, the volatilization of shrinkage reducing agent and the water dispersion of concrete interior are prevented after the curing agent is filmed, and the concrete shrinkage and crack prevention effects are further reinforced; compared with prior art, the cement concrete curing method effectively prevents the concrete shrinkage and crack, reinforces the cement hydration effect and improves the curing effect.

Description

Technical field [0001] The invention relates to a method for curing cement concrete. Background technique [0002] Cement concrete is currently the largest and most widely used civil engineering material in the world. It has many advantages such as easy access to raw materials, adjustable mechanical properties, excellent durability and low price. Many factors such as the types of cement concrete raw materials, mixing ratio, construction and maintenance technology, and use environment play a decisive role in the mechanical properties and durability of cement concrete. Under the premise of certain types and mix ratios of raw materials, consistent construction specifications, and consistent use environmental conditions, reasonable and effective curing techniques are essential to improve the early tensile strength of concrete, reduce surface shrinkage and cracking, and reduce permeability. The key factors for good mechanical properties and durability. [0003] Cement concrete is a ki...

AI Technical Summary

Problems solved by technology

However, after the shrinkage reducing agent is mixed with the curing agent, there is a problem of mutual influence and interference between the shrinkage reducing component and the film-forming component of the curing agent, so the maximum performance of both shrinkage reduction and water retention cannot be fully exerted; the patent No. 200710029782.1 " The anti-cracking curing agent for preventing concrete cracking and its production method and its application” patent also uses the polyether alcohol mixture to reduce the surface tension of the concrete surface pore solution to achieve the purpose of shrinkage reduction, but this anti-cracking curing agent is also not available. Membrane function, the water loss of concrete drying has not been significantly improved

In addition, none of the above three published patents considered the state of water content on the concrete surface during application, that is, from the perspective of the maintenance principle, if the concrete surface is relatively dry, there will be less water in the pores. It reduces the surface tension of the solution. After applying this shrinkage curing agent, its principle is not substantially different from that of mature products of general concrete curing agents. On the other hand, the lack of water on the concrete surface will hinder the later hydration of the cement, which is not conducive to concrete. Increased durability

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