Concrete admixture is mainly surface active agent, with surface adsorption, dispersion, wetting, foaming and defoaming effect, different surface active agent because of its different molecular structure, the impact of cement hydration is also different. The adaptability of admixtures is also different for different components and quantities in cement.
In the concrete test process, the first to do the compatibility test of admixture and cementite material, which involves the construction of concrete and concrete quality and other problems. Admixture and cementite material compatibility is not good, the effect of admixture can not give full play to concrete mixing will appear hardening, bleeding, bubbles and other phenomena, in addition to concrete durability, mechanical properties will also have a great impact. By adjusting the composition of admixture and cement to meet the requirements of compatibility, make the admixture fully play a role.
