水工混凝土耐久性研究的新进展

New development of the study on hydraulic concrete durability

国家“九五”攻关“混凝土抗冻性研究”和“耐化学腐蚀及高耐蚀材料的研究”两个专题中 ,包括了高抗冻超抗冻混凝土的开发及应用、高强混凝土的抗冻性、混凝土抗冻性的定量化设计、荷载和高浓度硫酸盐侵蚀的研究 ,以及压力水下混凝土渗漏溶蚀的研究等子题。研究成果已通过国家科技部的鉴定 ,并在三峡大坝等工程中得到了应用 。

The two subjects of 'the study on concrete frost resistance' and 'the study on the materials with chemical corrosion resistance and high corrosion resistance', as the national key research subjects during the Ninth Five Year Plan, include the development and application of concrete with high and super frost resistance. The research results of its sub topics such as the study on the frost resistance of high strength concrete, quantitative design of concrete frost resistance, the study on the high content sulphate corrosion, and the study on seepage and solution of the underwater concrete under the condition of pressure, has been appraised and passed by the Ministry of Sciences and Technology. All these achievements have been applied in the projects such as the Three Gorges Project and have gained good effectiveness.