掺纤维素纤维高强混凝土的耐久性能研究  

Research on durability of High-strength cellulose fiber reinforced concrete

作　　者：刘杰[1] 张建峰[2] 彭尚仕[2] 肖开涛[2] LIU Jie;ZHANG Jian-feng;PENG Shang-shi;XIAO Kai-tao(Construction and Administration Bureau of South-to-North Water Diversion Middle Route Project,Beijing 100038,China;Changjiang River Scientific Research Institute,Wuhan 430010,China)

机构地区：[1]南水北调中线干线工程建设管理局,北京100038 [2]长江水利委员会长江科学院,武汉430010

出　　处：《南水北调与水利科技》2015年第S01期96-98,共3页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金重点资助项目(51139001)。

摘　　要：研究了纤维素纤维对高强混凝土抗渗性能、抗冻性能以及早期抗裂等耐久性能的影响。试验结果表明,掺入纤维素纤维后能明显提高混凝土的抗渗性能,对早期抗冻性能的影响不大,但可有效抑制混凝土早期塑性收缩,提高混凝土的抗裂性能;相同水胶比,不同骨料最大粒径的混凝土耐久性能之间相差较小。Efect of cellulose fiber on permeability resistance,freeze-thaw resistance,and early cracking resitance of high-strength concrete was investigated in this paper.The experimental results indicate that permeability resistance are improved and inhibited because of the addition of cellulose fiber.The freeze-thaw resistance was scarcely changed,but the plastic cracks of the concrete during the early period are inhabited which mean that freeze-thaw resistance are improved.When the water-cement ratio is the same,there are almost no changes on concrete durability of different the largest particle size of aggregate.

关 键 词：纤维素纤维 抗渗性能 抗冻性能 抗裂性能 耐久性 

分 类 号：U444[建筑科学—桥梁与隧道工程]