混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2015年
1期
57-60
,共4页
周乾%张亚仿%荀勇%吴发红%丁佳驹
週乾%張亞倣%荀勇%吳髮紅%丁佳駒
주건%장아방%순용%오발홍%정가구
肋形纤维混凝土永久模板%结合面%抗剪强度%试验研究
肋形纖維混凝土永久模闆%結閤麵%抗剪彊度%試驗研究
륵형섬유혼응토영구모판%결합면%항전강도%시험연구
Ribbed fiber concrete permanent template%Bonding surface%Shear strength%Experimental study
针对肋形混凝土永久性模板与结构新浇混凝土之间粘接问题,制作了与肋形模板原理相同的试件及对比试件共四种24个,用双面剪的方法对试块进行了新老混凝土的粘结面抗剪试验。试验结果表明,掺PVA纤维并带宽、高均为10mm肋的试件粘结面的抗剪强度是整体混凝土抗剪强度的85.78%,能够满足利用永久性模板浇筑的板、墙类构件抗剪要求。同时,对新老混凝土粘结面抗剪能力的计算方法进行了探讨。
針對肋形混凝土永久性模闆與結構新澆混凝土之間粘接問題,製作瞭與肋形模闆原理相同的試件及對比試件共四種24箇,用雙麵剪的方法對試塊進行瞭新老混凝土的粘結麵抗剪試驗。試驗結果錶明,摻PVA纖維併帶寬、高均為10mm肋的試件粘結麵的抗剪彊度是整體混凝土抗剪彊度的85.78%,能夠滿足利用永久性模闆澆築的闆、牆類構件抗剪要求。同時,對新老混凝土粘結麵抗剪能力的計算方法進行瞭探討。
침대륵형혼응토영구성모판여결구신요혼응토지간점접문제,제작료여륵형모판원리상동적시건급대비시건공사충24개,용쌍면전적방법대시괴진행료신로혼응토적점결면항전시험。시험결과표명,참PVA섬유병대관、고균위10mm륵적시건점결면적항전강도시정체혼응토항전강도적85.78%,능구만족이용영구성모판요축적판、장류구건항전요구。동시,대신로혼응토점결면항전능력적계산방법진행료탐토。
In view of the adhesive problems between the ribbed concrete permanent template and structure new pour-ing concrete, 24 specimens (four types) using the same principle as ribbed template are made, and the shear tests of bonding surfaces of the new and old concrete are carried out by the method of double-sided shear. The test results show that shear strength of bonding surface of specimen with PVA fiber and 10mm of width and height rib is 85.78%of shear strength of the overall concrete, and it can satisfy the requirements of using permanent template to pour plate and shear wall components. In addition, the calculation method on shear capacity of bonding surfaces of the new and old concrete is discussed.