微膨胀聚丙烯纤维混凝土在巴东长江公路大桥桥面铺装中的应用  

Application of micro-expansion polypropylene fiber concrete to the deck pavement of Badong Highway Bridge on Yangtze River

作　　者：单俊鸿[1,2] 周明凯[3] 李北星[4] 

机构地区：[1]河北工程学院 [2]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉430070 [3]武汉理工大学硅酸盐材料工程教育部重点实验室 [4]武汉大学

出　　处：《水利水电技术》2005年第3期44-46,共3页Water Resources and Hydropower Engineering

基　　金：西部交通建设科技项目(200131881193).

摘　　要：根据巴东长江大桥桥面铺装层的设计要求,对厚 100mm的C40防水混凝土进行了微膨胀聚丙烯纤维混凝土的配合比设计、性能试验和桥面铺装施工措施研究.结果显示,采用聚丙烯纤维和UEA Ⅰ膨胀剂补偿收缩的混凝土具有优良的抗裂、抗渗、耐磨、抗冲击、抗疲劳等性能.选定的微膨胀聚丙烯纤维混凝土配合比在巴东长江大桥桥面铺装层中进行了全面施工应用,效果十分理想.In accordance with the design of the requirement for the deck pavement of Badong Highway Bridge on Yangtze River, the study on the mix design for the micro-expansion polypropylene fiber concrete (a concrete with minute-expansion agents), the performance experiment and the construction measures of the pavement on the bridge deck is made for the C40 waterproof concrete with the thickness of 100 mm concerned. The result shows that the concrete mixed with polypropylene fiber and UEA-I expansion agent has the excellent properties against permeation, cracking, wearing, impact, fatigue and freeze-thaw etc. Through the study, the selected mixing ratio of the micro-expansion polypropylene fiber concrete is applied to the concrete for the pavement on the deck of the bridge and the effect is perfect as well.

关 键 词：桥面 聚丙烯纤维混凝土 膨胀剂 配合比 施工 

分 类 号：TV431.3[水利工程—水工结构工程]