纤维混杂微膨胀混凝土力学性能及其工程应用  

Mechanical property of hybrid fiber reinforced concrete and its application in airport

作　　者：黄凯健[1] 邓敏[1] 郝成伟[1] 张建亮[1] 白洪涛[2] 

机构地区：[1]南京工业大学材料科学与工程学院材料化学工程国家重点实验室 [2]中国人民解放军95538部队

出　　处：《混凝土》2009年第10期74-76,共3页Concrete

基　　金：国家重点基础研究发展计划(2009CB623105);"十一五"国家科技支撑计划"高性能道路水泥混凝土路面关键技术"课题(2006BAF02A2506)

摘　　要：研究了不同弹性模量纤维与氧化镁膨胀剂复掺对混凝土试件强度的影响规律。同时在西藏某机场现场浇筑480m2纤维微膨胀混凝土试验段,并采用数显式回弹仪测量机场道面混凝土的强度和回弹值。结果表明:钢纤维系列纤维混杂微膨胀混凝土试件的7d和28d强度均大于空白样试件强度;与普通混凝土面板相比,钢纤维掺量为40kg/m3和80kg/m3的纤维混杂微膨胀混凝土强度和回弹值分别增加了5.0%、10.5%和5.9%、10.5%。Several fibers with different elastic modulus were hybrided with MgO expansion agent to enhance the mechanical properties of concrete.Testing field was placing by using hybrid fiber microdilatancy reinforced concrete （HFMRC） in an airport which area is about 480 m： in Tibet. Digimatic rebound tester was used to test the strength and rebound value of pavement concrete.Results show that both 7 d and 28 d mechanical properties of HFMRC which hybrid with steel fiber and other fibers were larger than that of reference concrete.The strength and rebound value of HFMRC with different steel fiber content of 40 kg/m3 and 80 kg/m3 is 5.0%, 10.5% and 5.9%, 10.5% larger than that of reference concrete, respectively.

关 键 词：纤维混杂 微膨胀混凝土 力学性能 机场道面 

分 类 号：TU528.041[建筑科学—建筑技术科学]