高強化再生混合混凝土的基本徐變試驗研究
發(fā)布時間:2018-09-14 12:10
【摘要】:通過對3組高強化再生混合混凝土圓柱體試件(由C70新混凝土和C30廢舊混凝土塊體混合澆筑而成)、1組C70新混凝土圓柱體試件、1組C30廢舊混凝土圓柱體試件的基本徐變試驗,分析了廢舊混凝土塊體取代率和應力比對高強化再生混合混凝土徐變性能的影響。研究表明:高強化再生混合混凝土的徐變度和徐變柔量均隨著廢舊混凝土塊體取代率的增加有所增大,總體上小于廢舊混凝土的徐變度和徐變柔量,而與新混凝土的徐變度和徐變柔量相對更為接近;當應力比小于0.4時,高強化再生混合混凝土的基本徐變仍近似與其應力比成正比。
[Abstract]:The basic creep tests of three groups of high strength recycled concrete cylindrical specimens (made of C70 new concrete and C30 waste concrete blocks) and 1 group of C70 new concrete cylindrical specimens were studied. The influence of replacement ratio and stress ratio of waste concrete blocks on creep behavior of high strength recycled mixed concrete is analyzed. The results show that the creep degree and creep flexibility of high strength recycled mixed concrete increase with the increase of the replacement rate of waste concrete blocks, and are generally smaller than those of waste concrete. When the stress ratio is less than 0.4, the basic creep of high strength recycled mixed concrete is still approximately proportional to its stress ratio.
【作者單位】: 華南理工大學亞熱帶建筑科學國家重點實驗室;中國建筑科學研究院;
【基金】:國家自然科學基金重點項目(51438007) 廣州市科學(技術)研究專項重點項目(201607020005) 亞熱帶建筑科學國家重點實驗室項目(2015ZB21,2013ZB24)
【分類號】:TU528
[Abstract]:The basic creep tests of three groups of high strength recycled concrete cylindrical specimens (made of C70 new concrete and C30 waste concrete blocks) and 1 group of C70 new concrete cylindrical specimens were studied. The influence of replacement ratio and stress ratio of waste concrete blocks on creep behavior of high strength recycled mixed concrete is analyzed. The results show that the creep degree and creep flexibility of high strength recycled mixed concrete increase with the increase of the replacement rate of waste concrete blocks, and are generally smaller than those of waste concrete. When the stress ratio is less than 0.4, the basic creep of high strength recycled mixed concrete is still approximately proportional to its stress ratio.
【作者單位】: 華南理工大學亞熱帶建筑科學國家重點實驗室;中國建筑科學研究院;
【基金】:國家自然科學基金重點項目(51438007) 廣州市科學(技術)研究專項重點項目(201607020005) 亞熱帶建筑科學國家重點實驗室項目(2015ZB21,2013ZB24)
【分類號】:TU528
【相似文獻】
相關期刊論文 前10條
1 巫祖烈;管延武;張永水;王春江;;大噸位徐變儀的研制及徐變試驗[J];公路交通科技;2008年01期
2 柯敏勇;劉海祥;陳松;;橋用高強混凝土雙軸徐變試驗研究[J];建筑結構學報;2012年06期
3 朱凱;付修兵;李愛群;;某大橋高性能混凝土徐變試驗研究及預測[J];世界橋梁;2007年02期
4 童代偉;鐘建國;;現(xiàn)場混凝土收縮、徐變試驗研究[J];公路;2008年02期
5 張s,
本文編號:2242670
本文鏈接:http://sikaile.net/jingjilunwen/jianzhujingjilunwen/2242670.html
教材專著