Concrete admixtures should be noted that the compatibility between them were mixed with the development of technology and the real estate industry hot, leading to the kind of concrete admixtures are also special, gave the following we explain the types of concrete admixtures. Also known as concrete admixture admixture or additional agent. It is defined in the composition of various raw materials of concrete or mixed material, the material added separately, that the concrete mixing process to improve the incorporation of the various properties of the concrete chemicals. Coagulant admixture according to the functions can be divided into four categories: The first is to improve the durability of concrete admixtures. Including air-entraining agents, waterproofing agents and rust agent. The second is to improve the rheological properties of fresh concrete admixtures. Including a variety of superplasticizer, air entraining agents and pumping agents. The third is to improve other properties of concrete admixtures. Include air entraining agents, bulking agents, anti-freeze agents, colorants, binders and base - bone reaction inhibitors. The fourth adjustment setting time of concrete, hardened performance admixtures. Including retarder, early strength agent and accelerating agent. Admixtures morphology have gamma forms, namely liquid and powder. Liquid products are measured by volume or mass, sometimes manufacturing plant to provide the soluble solid product, before using an aqueous solution of a given concentration. Powder products are generally carriers, such as fly ash, volcanic ash, slag, etc., whose purpose is to make admixture accurate measurement, distributed evenly and prevent moisture caking powder admixtures are usually measured by mass. Use admixtures used in artificial, semi-automatic and automatic measurement, accurate measurement should be done. Admixture dosage is determined, based on a mix concrete mixer volume and unit cement admixture dosage calculation. If you use both admixtures should pay attention to the compatibility between them, especially when there are air-entraining agent were mixed with.