中国科技论文
中國科技論文
중국과기논문
Sciencepaper Online
2014年
11期
1320-1323,1328
,共5页
胶粉改性砂浆%胶粉%聚丙烯纤维%折压比%韧性
膠粉改性砂漿%膠粉%聚丙烯纖維%摺壓比%韌性
효분개성사장%효분%취병희섬유%절압비%인성
latex powder modified mortar%latex powder%polypropylene fiber%the ratio of bending-compressive strength%tough-ness
采用聚丙烯纤维与聚合物胶粉复掺的方法配制了胶粉改性砂浆，并应用正交试验和多点分布的纤维单因素试验研究了聚丙烯纤维与聚合物胶粉复掺对砂浆强度和韧性的影响。结果表明：随着纤维掺量的增加，砂浆折压比总体上呈增加趋势，长度为10 mm的聚丙烯纤维增韧效应最优；当聚丙烯纤维复合胶粉改性砂浆的折压比在0．17～0．21时，韧性显著提高；配制参数纤维掺量为0．2％、纤维长度为10 mm、胶粉掺量为5％、硅粉掺量为5％的胶粉改性砂浆的综合强度和韧性最优，适合作为混凝土剥蚀面层的修复材料。
採用聚丙烯纖維與聚閤物膠粉複摻的方法配製瞭膠粉改性砂漿，併應用正交試驗和多點分佈的纖維單因素試驗研究瞭聚丙烯纖維與聚閤物膠粉複摻對砂漿彊度和韌性的影響。結果錶明：隨著纖維摻量的增加，砂漿摺壓比總體上呈增加趨勢，長度為10 mm的聚丙烯纖維增韌效應最優；噹聚丙烯纖維複閤膠粉改性砂漿的摺壓比在0．17～0．21時，韌性顯著提高；配製參數纖維摻量為0．2％、纖維長度為10 mm、膠粉摻量為5％、硅粉摻量為5％的膠粉改性砂漿的綜閤彊度和韌性最優，適閤作為混凝土剝蝕麵層的脩複材料。
채용취병희섬유여취합물효분복참적방법배제료효분개성사장，병응용정교시험화다점분포적섬유단인소시험연구료취병희섬유여취합물효분복참대사장강도화인성적영향。결과표명：수착섬유참량적증가，사장절압비총체상정증가추세，장도위10 mm적취병희섬유증인효응최우；당취병희섬유복합효분개성사장적절압비재0．17～0．21시，인성현저제고；배제삼수섬유참량위0．2％、섬유장도위10 mm、효분참량위5％、규분참량위5％적효분개성사장적종합강도화인성최우，괄합작위혼응토박식면층적수복재료。
A latex powder modified mortar was prepared by adding polypropylene fiber and latex powder,and an orthogonal ex-periment and fiber single factor experiment with multipoint distribution were conducted to investigate the influence of polypropyl-ene fibers and latex powder composite on the strength and toughness of the modified mortar.The results show that the ratio of bending-compressive strength (RBCS)tends to increase in general with the increase of fiber content.The toughness of latex pow-der modified mortar is distinctly better because its RBCS is in the range of 0.17 to 0.21.The 10 mm length polypropylene fiber is optimal to improve the bending strength and toughness of mortar.When the mixture parameters are fiber content 0 .2%,fiber length 10 mm,content of latex powder 5%and silica fume content 5%,the comprehensive strength and toughness of the latex powder modified mortar are optimal,so the modified mortar is suitable for the repair material on the concrete erosion surface.
