Performance evaluation of green-concrete pavement material containing selected C&D waste and FA in cold regions
作者: Yimeng WeiJunrui ChaiYuan QinZengguang XuXianwei Zhang
作者单位: 1State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an University of Technology
刊名: Journal of Material Cycles and Waste Management, 2019, Vol.21 (6), pp.1550-1562
来源数据库: Springer Nature Journal
DOI: 10.1007/s10163-019-00908-3
关键词: ConcreteFreeze–thaw cycleNuclear magnetic resonancePore distribution
英文摘要: Abstract(#br)To evaluate the performance of green-concrete road material in cold regions of northern China, concrete was prepared with 0%, 50%, and 100% air-entrained coarse recycled concrete aggregate (CRCA) to replace coarse natural aggregate (CNA). Low-volume and high-volume fly ash (FA; LFA- and HFA-) were also used to replace some cement. The mass loss, residual compressive strength, relative dynamic modulus of elasticity (RDME), and concrete microstructure were measured after being subjected to certain freeze–thaw (F–T) cycles. Results indicated that an appropriate amount of CRCA can help optimize the pore distribution of concrete, and improved the frost resistance of concrete. FA can improve the workability of concrete and enhance the bonding performance of aggregate–mortar...
全文获取路径: Springer Nature  (合作)