Concrete curing agent containing modified pina fibers as well as manufacturing method and application of concrete curing agent

Abstract

The invention discloses a concrete curing agent containing modified pina fibers as well as a manufacturing method and application of the concrete curing agent. The concrete curing agent is prepared from the following components in percentage by mass: 25 percent to 32 percent of the modified pina fibers, 48 percent to 55 percent of styrene-acrylic emulsion, 2.3 percent to 2.7 percent of dibutyl diformate, 0.45 percent to 0.78 percent of a fluorocarbon modified polyacrylate leveling agent, 0.12 percent to 0.18 percent of an organic silicon de-foaming agent, 0.18 percent to 0.22 percent of tributyl phosphate and the balance of water, wherein the modified pina fibers are prepared from pina fibers, silica sol, concentrated hydrochloric acid, nano calcium oxide and vinyl trimethoxy silane. The concrete curing agent with high water retention rate and anti-cracking and shrinkage reducing effect is obtained through the following steps: taking the modified pina fibers and water which is one half of the mass of a formula amount at the ratios, and uniformly mixing to obtain a first mixed solution; weighing the other components at the ratios, and uniformly mixing to obtain a second mixed solution; combining the first mixed solution and the second mixed solution, and sufficiently and uniformly stirring to obtain the product.

Description

technical field [0001] The invention relates to the technical field of concrete maintenance, in particular to a concrete maintenance agent containing modified pineapple hemp fibers and a preparation method and application thereof. Background technique [0002] Concrete curing is an important part of concrete construction. After concrete is poured, it must be cured during the initial setting process, that is, to maintain the necessary humidity and temperature so that it has enough water to ensure the hydration reaction; Greatly improve the durability, strength, wear resistance, volume stability and other properties of concrete. The traditional maintenance methods include grass bag maintenance, plastic film maintenance and watering maintenance. These methods are time-consuming, labor-intensive and seriously waste water resources. [0003] The method of curing concrete with film-forming curing agents has a long history. At present, the common curing agents on the market can b...

AI Technical Summary

Problems solved by technology

Among them, paraffin-type emulsion curing agent is relatively common. This type of curing agent has a high water retention rate and is easy to remove. The disadvantage is that the cost is relatively high, so it is subject to certain restrictions.

Another emulsion-type curing agent is prepared from high-molecular organic compounds such as styrene-acrylic emulsion, which can form a continuous diaphragm on the concrete surface. It has many advantages such as low cost, convenient use, green environmental protection, and easy removal. However, its water retention rate has been relatively low, and the 72-hour water retention rate is generally below 60%.

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