Papers by Author: Zhong Xin Li

Abstract: In order to study the durability of reinforced chemically bonded ceramics-based concrete structural members in marine environment, both the experiment of chloride ion permeability-resistance and rapid corrosion experiment of rebar in the CBC concrete were conducted. The methods of ASTM C1202,RCM and NEL were used to comprehensively assess the ability of chloride ion permeability-resistance of CBC concrete, electric flux and unsteady migration coefficients were taken as estimate indexes, while in the rapid corrosion experiment of rebar under the condition of immersing-drying circulating, rusty accumulation rate and weight loss ratio were taken as estimate indexes. The results of experiments indicate that CBC concrete has strong resistibility for chloride ion penetration, however, it cannot protect the internal rebar effectively, for the reason that the rebar in this test has been seriously corroded.

Abstract: Compared with Portland cementitious material,alkali-activated cementitious material owns many excellent performance,such as high strength, good durability, low heat and so on;however,the absence of admixture for alkali-activated cementitious material makes contribute to embarrass application of this type of material. The paper introduces some approiate chemical admixture for alkali-activated cementitious material, summarizes and dicusses the mechanism of few admixture,also raises the current problem and prospect for alkali-activated cementitious material