Self-desiccation Effect of High Performance Concrete

Effects of water to binder ratio (mg/mg), types and addition content of mineral admixtures on the autogenous relative hunidity(ARtt) change of concrete resulting from self-desiccation were studied. The parameters of coefficient of mineral self desiccation-effect k and efficient water to hinder ratio r, were proposed,and experimental results were fitted non-linearly and analyzed using these proposed parameters. The e.experimentol re-sults indicate that ARH reduction of concrete at different ages increases with the deccrense of mn/mn the arh change laus of concrete with mg/mg lover than 0.4 can be expressed with a non-linear equation.the extent of the effect of types and addition content of mineral admixtures on ARH redution of concrete resulting from self-desiccation can be reflected by the non-linear equation with the parameter of efficient water to binder ratio r effectively cation can be reflected by the non-linear equation with the parameter of efficient water to binder ratio r effectively.

Self-desiccation effect of high performance concrete

Effects of water to binder ratio (m W/m B), types and addition content of mineral admixtures on the autogenous relative humidity (ARH) change of concrete resulting from self-desiccation were studied. The parameters of coefficient of mineral self-desiccation-effect k and efficient water to binder ratio r e were proposed, and experimental results were fitted non-linearly and analyzed using these proposed parameters. The experimental results indicate that ARH reduction of concrete at different ages increases with the decrease of m W/m B. The ARH change laws of concrete with m W/m B lower than 0.4 can be expressed with a non-linear equation. The extent of the effect of types and addition content of mineral admixtures on ARH reduction of concrete resulting from self-desiccation can be reflected by the non-linear equation with the parameter of efficient water to binder ratio r e effectively.