摘要
为解决水泥混凝土路面修补材料存在的路面开放交通时间偏长和耐久性较差的问题,研制了地聚合物混凝土,并将其应用于水泥混凝土路面的快速修补.实验研究了普通硅酸盐水泥掺量和激固比对地聚合物早期强度的影响、地聚合物混凝土的力学性能、粘结强度和收缩率.结果表明:水泥掺量为10%、激固比为0.75时,地聚合物早期力学性能最好,地聚合物混凝土8 h时的抗折强度和抗压强度分别为3.25和43.6 MPa,其力学强度、粘结强度、收缩率均满足路面修补混凝土的技术要求.
To solve the problems of long traffic opening time and low durability of the existing cement concrete pavement repair materials,a geopolymeric concrete was developed and applied to rapid repair of cement concrete pavement.The influence of Portland cement dosage and activator to solid ratio on the early strength of geopolymer was studied experimentally,and the mechanical properties,adhesive strength,shrinkage of the geopolymeric concrete were investigated as well.The results show that the geopolymer has the highest early strength when the dosage of cement is 10%,and the activator to solid ratio is 0.75.The 8-hour flexural strength and compressive strength of the geopolymer concrete prepared are 3.25 and 43.6 MPa,respectively,and the 8-hour mechanical properties,adhesive strength,and shrinkage of the geopolymeric concrete meet the technical requirements of repair concrete.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2011年第2期205-210,共6页
Journal of Southwest Jiaotong University
基金
重庆市科学技术委员会攻关项目(CSTC
2009
AC4054)
关键词
地聚合物
早期强度
快速修补
粘接强度
geopolymer
early strength
rapid repair
adhesive strength
