混凝土
混凝土
혼응토
CONCRETE
2014年
6期
81-83,111
,共4页
姜海军%刘曙光%闫长旺%张菊
薑海軍%劉曙光%閆長旺%張菊
강해군%류서광%염장왕%장국
聚乙烯醇纤维%水泥基复合材料%单轴受压%应力-应变曲线
聚乙烯醇纖維%水泥基複閤材料%單軸受壓%應力-應變麯線
취을희순섬유%수니기복합재료%단축수압%응력-응변곡선
PVA fiber%cementitious composites%uniaxial compression%stress-strain curve
聚乙烯醇纤维增强水泥基复合材料（Polyvinyl alcohol fiber reinforced cementitious composites简称PVA-FRCCs）是一种高性能纤维增强水泥基复合材料。采用棱柱体试件（150 mm×150 mm×550 mm）研究其单轴受压力学性能。单轴受压试验直接获得了棱柱体试件的应力-应变全曲线，从而获得峰值应力、峰值应变、弹性模量，并系统分析了纤维体积掺量对上述参数的影响。通过对试验数据和已存模型比较获得一个能够描述其应力-应变曲线的非线性本构模型。
聚乙烯醇纖維增彊水泥基複閤材料（Polyvinyl alcohol fiber reinforced cementitious composites簡稱PVA-FRCCs）是一種高性能纖維增彊水泥基複閤材料。採用稜柱體試件（150 mm×150 mm×550 mm）研究其單軸受壓力學性能。單軸受壓試驗直接穫得瞭稜柱體試件的應力-應變全麯線，從而穫得峰值應力、峰值應變、彈性模量，併繫統分析瞭纖維體積摻量對上述參數的影響。通過對試驗數據和已存模型比較穫得一箇能夠描述其應力-應變麯線的非線性本構模型。
취을희순섬유증강수니기복합재료（Polyvinyl alcohol fiber reinforced cementitious composites간칭PVA-FRCCs）시일충고성능섬유증강수니기복합재료。채용릉주체시건（150 mm×150 mm×550 mm）연구기단축수압역학성능。단축수압시험직접획득료릉주체시건적응력-응변전곡선，종이획득봉치응력、봉치응변、탄성모량，병계통분석료섬유체적참량대상술삼수적영향。통과대시험수거화이존모형비교획득일개능구묘술기응력-응변곡선적비선성본구모형。
Polyvinyl alcohol fiber reinforced cementitious composites(PVA-FRCCs) is a kind of high performance fiber-reinforced ce-mentitious composites.We have investigated the uniaxial compression properties of PVA-FRCCs with prismatic specimen size(150 mm× 150 mm×550 mm).The stress-strain curves were directly obtained,and the compressive parameters,i.e.,peak stress,average strain at peak stress,elastic modulus,were calculated,on which the effects of fiber volume fraction were investigated.We have obtained the nonlinear constitutive models to describe its stress-strain curves with comparison between experimental results and existing models.The proposed constitutive models do compare well for PVA-FRCCs.
