聚丙烯纤维增强膨胀混凝土试验研究  

作　　者：孙道胜[1,2] 黄小明[3] 邓敏[1] 谭麦秋[3] 唐明述[1] 

机构地区：[1]南京工业大学 [2]安徽建筑工业学院,安徽合肥230022 [3]空军后勤部机场营房部

出　　处：《新型建筑材料》2004年第2期1-4,共4页New Building Materials

基　　金：国家973计划项目(2001CB610705);安徽省教育厅自然科学重点项目(2002KJ082ZD)资助

摘　　要：通过正交试验,研究2种聚丙烯纤维、4种膨胀剂分别在4个掺量和2个水胶比水平下,对混凝土工作性、力学性能和收缩变形特性的影响。研究表明,聚丙烯纤维和微膨胀剂复合,能提高混凝土的抗折强度、降低抗折弹性模量,并补偿收缩;聚丙烯纤维、膨胀剂和减水剂协同作用对混凝土力学性能的改善优于膨胀剂的单一作用。The orthogonal experiments were made using two kinds of polypropylene fibre and four kinds of expansion agent respectively with four adding amounts and two water-binder ratios so as to study their effect on workability, mechanical property and shrinkage deformation of the concrete. The result shows that compounding polypropylene fibre and expansion agent can enhance flexure strength and reduce flexure elasticity modulus and compensate shrinkage of the concrete. It also shows that conjunction of polypropylene fibre, expansion agent and water reducer is superior to single expansion agent in improving mechanical property of the concrete.

关 键 词：聚丙烯纤维 膨胀剂 混凝土 道面 

分 类 号：TU528.55[建筑科学—建筑技术科学]