【摘要】 主要对纤维增强水泥基复合毯的力学性能及耐久性能开展研究，以及通过CT扫描技术和水化热试验对其内部结构和早期水化行为进行分析，并针对某围堰护坡工程进行了工程实践探索。研究结果表明：水泥砂浆基体和三维间隔织物的复合使纤维增强水泥基复合毯具有良好的力学性能、抗冻性能和抗干湿循环性能；水泥毯内部纤维沿纬向交叉分布、沿经向平行分布，对其抗拉强度和体积变形影响显著，纬向抗拉强度是经向的1.25倍，纬向干缩变形大于经向，沿经纬向抗拉和抗弯破环形态也有明显区别；水泥毯独特的洒水成型工艺与传统的搅拌成型相比水泥浆体的水化放热速率和放热量更低，且洒水量越大，放热量越低；将纤维增强水泥基复合毯应用于围堰护坡工程一年半时间内，既无开裂也无沉降现象产生，效果良好，可推广应用于此类基面不平、地基松软的工程。更多还原

【Abstract】 It mainly investigated the mechanical properties and durability of fiber reinforced cement-based composite blanket,and examined their internal structure and early hydration behavior through CT scanning technology and hydration heat test,and explored the engineering practice of a cofferdam slope protection project.The results indicate that The combination of cement mortar matrix and three-dimensional spacer fabric makes the fiber reinforced cement-based composite blanket have good mechanical properties,frost resistance and dry-wet cycle resistance.The cross distribution of fibers in the cement blanket along the weft direction and the parallel distribution along the warp direction have a significant effect on the tensile strength and volume deformation of the cement blanket.The tensile strength in the weft direction is 1.25 times that in the warp direction,and the shrinkage deformation in the weft direction is greater than that in the warp direction.There are also obvious differences in the tensile and flexural breaking forms along the warp and weft directions.Compared with the traditional mixing molding,the unique water spraying molding process of cement blanket has lower hydration heat release rate and heat release,and the larger the amount of water sprayed,the lower the heat release.After one and a half years of application in a cofferdam slope protection project,the fiber-reinforced cement-based composite blankets showed no signs of cracking or settlement,demonstrating satisfactory performance.This technology is deemed suitable for and can be extended to projects featuring uneven base surfaces and soft foundations.更多还原