Reactive Powder Concrete (reactive powder concrete, RPC) is a new type of cement -based materials with high strength, high toughness and high durability and other properties , so that in civil engineering, petroleum , nuclear power , municipal , marine and other military facilities in engineering and has broad application prospects. Richard and Cheyrezy first proposed reactive powder concrete , which is characterized by : ① the elimination of coarse aggregate in order to improve the uniformity ; ② by optimizing the ratio of aggregate density and applied pressure increases ; ③ through post heat treatment to improve its microstructure ; ④ introduction of steel fiber to improve ductility ; ⑤ add active admixtures ( silica fume , fly ash or slag ) improve pozzolanic reaction .
  Matrix and dopant on the properties of composites plays a leading role . In addition, the interface matrix and dopant properties of composites will also play a vital role. RPC concrete three-phase components: water slurry consisting of matrix , aggregate and aggregate matrix interfacial transition zone . For grout matrix hydration and pozzolanic reaction is highly dependent on the curing temperature and age , when the high temperature curing tobermorite and Xonotlite minerals such as hydration occurs, on average chain length of CSH gel pore volume and pore size will follow the heat treatment temperature increases ; while crushing quartz reaction activity with the treatment temperature is increased . For the interfacial transition zone , ordinary concrete generally has a thickness of 30 ~ 50μm , while away from the more recent aggregate , the higher the porosity , and for high performance concrete, interfacial transition zone found no significant pore structure .