Properties of High Performance Alkali-activated Slag Pavement Concrete

High performance alkali-activated slag pavement concrete (ASC) was prepared by adding Na2SiO3 and NaOH complex activator in slag.Physical, mechanical performance, durability, construction and economic performance of ASC were studied by workability, strength, hydrostatics and chlorin ion penetrability, fast freeze-thaw cycle tests, abrasion resistance tests and field tests.The results show that slump of ASC exceeds 160mm, fluidity and workability is excellent.28d compressive and flexural trength of AAC are 91.9MPa and 8.5MPa, 7d compressive and flexural strength are 84.8MPa and 7.6MPa, which belongs to highearly strenth concrete.And its impermeability rank exceeds S40, chlorin ion impermeability is excellent, 6h eletricity is 1751 ~ 1894 coulomb, and its anti-frozen rank exceeds F300, which can meet the anti-frozen requirements in frore area.Depth of abrade slot is 0.45 ~ 0.96mm, abrasion resistance of ASC is 4.99, so its physical, mechanical performance and durability are superior to traditional portland concrete.Morever, ASC has excellent construction and economic performance, which has widest application foreground in construction.
alkali-activated slag concrete workability strength durability contruction
WU Yonggen CAI Liangcai FU Yawei
School of Civil Engineering, Xi”an University of Architecture and Technology,Xi”an 710055, Shanxi, C School of Engineering, Air Force Engineering University, Xi”an 710038,Shanxi, China
国内会议
混凝土低碳技术国际学术研讨会暨第九届全国高性能混凝土学术研讨会
武汉
英文
328-333
2010-11-24(万方平台首次上网日期,不代表论文的发表时间)