發(fā)布時間：2018-06-02 23:41

  本文選題：補償收縮混凝土 + 限制膨脹率　； 參考：《新型建筑材料》2017年07期

【摘要】：根據(jù)煙草浦東科技園區(qū)超長結(jié)構(gòu)工程要求,設(shè)計了膨脹加強帶帶內(nèi)、帶外的C35、C40、C45補償纖維收縮混凝土配比,研究了膨脹劑摻量為35、40、45 kg/m3時,各強度等級補償收縮纖維混凝土限制膨脹率和抗壓強度的變化情況,并研究了有機纖維種類對補償收縮混凝土早期抗裂性能的影響。結(jié)果表明:膨脹劑摻量為35~40 kg/m3、聚丙烯纖維摻量為0.6 kg/m3時,補償收縮混凝土的限制膨脹率、抗壓強度、早期抗裂性能指標(biāo)達到最佳。
[Abstract]:According to the requirements of the super-long structure engineering of Pudong Tobacco Science and Technology Park, the ratio of C35C40C45 compensating fiber shrinkage concrete in and out of the expansion strengthened zone is designed. When the amount of expansion agent is 35 ~ 4045 kg/m3, the ratio of the shrinkage concrete is studied. The change of limited expansion ratio and compressive strength of concrete with compensating shrinkage fiber for each strength grade was studied, and the effect of organic fiber type on early crack resistance of compensating shrinkage fiber concrete was studied. The results show that when the amount of expansive agent is 35 ~ 40 kg / m ~ (3) and the content of polypropylene fiber is 0.6 kg/m3, the limiting expansion ratio, compressive strength and early crack resistance of compensating shrinkage concrete are the best.
【作者單位】： 中國新型建材設(shè)計研究院;上海市建筑科學(xué)研究院;上海工業(yè)固體廢棄物資源化工程技術(shù)研究中心;
【基金】：國家重點研發(fā)計劃項目(2016YFB0303204)
【分類號】：TU528

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本文編號：1970624