With the development of society and the advancement of pumping construction technology in the commercial concrete industry, more and more construction engineering companies and commercial concrete companies now choose to use concrete moisturizing agents instead Mortar, perform pump lubricating operations on concrete pumping equipment (pump trucks, tow pumps) before pumping concrete. Objectively speaking, concrete pipe moistening agent can indeed fully achieve the purpose of pump lubricating, and the process is more environmentally friendly and convenient to use. For construction engineering companies and commercial concrete companies, it can reduce processes, shorten operating time, and save money. funds and a pump lubrication program to improve equipment utilization.
However, since there is no unified industry standard for the concrete pipe moistening agent industry, each concrete pipe moistening agent manufacturer produces and implements it according to its own corporate standards. , which results in a mixed bag of concrete pipe moisturizing agent brands on the market, with uneven quality levels. The concrete pipe moistening agent products produced by many pipe moistening agent manufacturers not only have low molecular weight and poor product viscosity, but even worse, the aqueous solution after dissolving is alkaline or strongly alkaline!
We know that there are certain active minerals (such as SiO2, silicates, carbonates, etc.) in concrete aggregates. When an alkaline concrete moisturizing agent solution is mixed into concrete and exists in the micropores of the concrete, these mineral components will react chemically with the alkaline solution in the micropores, increasing the volume of the reaction products, thereby causing concrete Internal self-expansion stress causes cracking and damage to the concrete structure. This reaction phenomenon is called alkali aggregate reaction (ARR).
Since the alkali aggregate reaction generally occurs gradually after several years after the concrete is formed, the result is a decrease in the durability of the concrete, and in serious cases, the It will cause the concrete to lose its use value, and because the reaction occurs in the entire concrete, the damage caused by this reaction is difficult to prevent, let alone repair and save, so it is called the "cancer" of concrete. </p
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