The Information Performance after Chlorine Salt Erosion and Structure Performance Enhancement after the Usage of Repair Materials

摘要

Chloride ion invasion, results in information performance of the reinforced concrete structure are varying as following: steel corrosion, cracks and declining of the bearing capacity of the structure. Hence, appropriate repair materials should be chosen and the situation should be handled in a timely manner. In this paper, a brand new Phosphoaluminate Cement (PALC) is chosen for the repair material and the bonding materials are phosphate cement mortar and Portland cement mortar; the Phosphoaluminate cement's static elasticity coefficient and the thermal-expansion coefficient are close to these figures of Portland cement, it studies the repair performance of the PALC, together with the traditional Portland cement (PC). The results show that: the bonding strength between PALC-PC mortar is better than that of PC-PC mortar, and the former repair material itself has higher strength in the early stage.