方坤河　阮　燕　曾　力

提　要　根据岩滩工程7～10年龄期的少水泥高掺粉煤灰碾压混凝土芯样的微观、亚微观及部分宏观性能试验结果，对该混凝土的长龄期性能进行讨论。该混凝土水化产物正常、稳定、结构致密。随着龄期的进一步延长，粉煤灰还会不断水化，混凝土的孔隙结构不断改善，强度仍在增长，其它性能将得到进一步提高。水化产物稳定，混凝土抗溶蚀能力强。
关键词　少水泥　碾压混凝土　长龄期　性能

Late-age Properties of RCC with Low Cement
Content and High Fly Ash Content

Fang Kunhe　Ruan Yan　Zeng Li
(Wuhan University of Hydraulic and Electric Engineering　Wuhan　430072)

Abstract　The low cement content and high fly ash content RCC cores of Yantan project had been tested in different ages(up to 7 to 10 years).According to the microscopical,sub-scopical,macroscopical test results,the late-age properties of the RCC have been discussed.Micro-analysis shows that the hydration in RCC is consistent with normal concrete and the main products are stable at the age of 7 years,even 10 years.Internal structure of RCC is compact.The hydration of fly ash will proceed with age extending.The voids structure of RCC will improve continuously.Strength of RCC will grow in parallel with age. Other characteristics will be improved further.The main hydration products in RCC are stable.Dissolution-resisting characteristic of the RCC is strong.
Key Words　Low cement content　RCC　Late-age　Properties