The Effect Of Compatibility Of Admixture And Cement On Concrete

If adding water reducing agent can increase the fluidity of concrete in keeping the same water consumption, or reduce the unit water consumption in keeping the same fluidity, thus improving the strength of concrete, improve the durability of concrete, etc. Thus, can understand concrete admixture and the concept of the adaptability of cement and inadaptability: according to the technical specification for concrete admixture applications and will comply with the relevant standards after inspection of some kind of admixture adding to use in accordance with the provisions, can use the varieties of admixture cement mixing of concrete, if can produce due effect, is to adapt to the cement and the admixture; On the contrary, if the effect cannot be produced, there is an inadaptability between the cement and the admixture. Such as: with several ordinary Portland cement and mixed with some kind of high efficiency water reducing agent (the test in conformity with the quality standards for high efficiency water reducing agent) formulate concrete, under the condition of the preparation conditions are the same, there is a cement concrete preparation by a serious shortfall in water reducing rate, shows this kind of cement and the high efficiency water reducing agent does not adapt, and several other cement and the high efficiency water reducing agent. Again be like, when the concrete that some kind of cement place makes up is mixed add the accelerating agent that accord with relevant quality standard requirement through examination to get fast coagulate effect however, or add delay coagulate agent to get false coagulate effect however, can think be caused by as a result of the incompatibility between admixture and cement. Almost all varieties between cement and admixture of adaptability problems, is currently the most commonly used, water reducing agent and when its and cement produce inadaptability to intuitive response quickly come out, such as poor liquidity, low water reducing rate, or harden mixture phenomenon such as fever, fluidity loss too fast).