江苏建筑
江囌建築
강소건축
JIANGSU CONSTRUCTION
2012年
2期
87-90
,共4页
水泥基材料%形状记忆合金纤维%钢纤维%抗弯性能%韧性%疲劳性能
水泥基材料%形狀記憶閤金纖維%鋼纖維%抗彎性能%韌性%疲勞性能
수니기재료%형상기억합금섬유%강섬유%항만성능%인성%피로성능
cement base material%SMA fiber%steel fiber%bending performance%toughness%fatigue performance
文章以砂浆为基体材料,将短切形状记忆合金纤维和钢纤维掺入到砂浆中制备得复合SMA纤维增韧高性能水泥基材料。研究纤维的种类和掺量、长径比对纤维增韧水泥基材料试件的弯曲、疲劳等力学性能的影响规律。实验结果表明：采用SMA纤维与钢纤维复合掺入能够明显改善水泥基材料的弯曲和疲劳性能。随着混杂纤维体积掺量的增加,试件的抗弯承载力提高,当混杂纤维体积掺量为1%时,韧性可提高6-9倍;当混杂体积掺量为2%时,试件的疲劳寿命提高2.3倍。
文章以砂漿為基體材料,將短切形狀記憶閤金纖維和鋼纖維摻入到砂漿中製備得複閤SMA纖維增韌高性能水泥基材料。研究纖維的種類和摻量、長徑比對纖維增韌水泥基材料試件的彎麯、疲勞等力學性能的影響規律。實驗結果錶明：採用SMA纖維與鋼纖維複閤摻入能夠明顯改善水泥基材料的彎麯和疲勞性能。隨著混雜纖維體積摻量的增加,試件的抗彎承載力提高,噹混雜纖維體積摻量為1%時,韌性可提高6-9倍;噹混雜體積摻量為2%時,試件的疲勞壽命提高2.3倍。
문장이사장위기체재료,장단절형상기억합금섬유화강섬유참입도사장중제비득복합SMA섬유증인고성능수니기재료。연구섬유적충류화참량、장경비대섬유증인수니기재료시건적만곡、피로등역학성능적영향규률。실험결과표명：채용SMA섬유여강섬유복합참입능구명현개선수니기재료적만곡화피로성능。수착혼잡섬유체적참량적증가,시건적항만승재력제고,당혼잡섬유체적참량위1%시,인성가제고6-9배;당혼잡체적참량위2%시,시건적피로수명제고2.3배。
The paper adopted cement mortar as the base material,penetrated with short-cut shape memory alloy（SMA） fiber and steel fiber to make a kind of high-performance material called composite SMA fiber toughened high-performance cementitious materials.Researches were done to determine the rules of bending and fatigue performance of this high-performance cementitious materials when it is influenced by factors like type,volume fraction or length-diameter ratio of the fiber.The result shows that SMA fiber and steel fiber can significantly improve the bending and fatigue performance of cementitious materials.Also,when the volume fraction of the fiber increased,the bending and fatigue performance were enhanced.In this study,when the volume fraction is 1%,the toughness enhanced 6 to 9 times.When the volume fraction is 2%,the fatigue life was lengthened by 2.3 times.
