2, the influence of water reducing agent on concrete by adding appropriate amount of water reducing agent to concrete, can increase the slump of concrete, improve the workability of new concrete. In the process of adding water reducing agent to concrete, batch component can be used or after mixing method, which can effectively avoid the concrete slump loss problem, and realize the production cost savings.
3, the effect of antifreeze and early strength agent by adding antifreeze, can effectively reduce the freezing point of concrete, ensure the hydration of cement, so that concrete in a certain time to achieve the expected strength. However, in the specific application process of antifreeze agent, it is necessary to select the appropriate composition of antifreeze agent according to the purpose of engineering. At present, some concrete early strength agents commonly contain chloride ions, but chloride ions will react with the steel bar in the concrete structure, accelerate the corrosion of the steel bar, resulting in concrete expansion and cracks. Therefore, in the use of chlorine admixtures, it is necessary to add appropriate amount of rust inhibitor to the mixed spring soil in time. At the same time, the admixture containing chloride ions should be avoided in the open-air concrete, so as not to bring greater impact on the quality of concrete.
