粉煤灰综合利用 2016o.1 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 再生细骨料品质和取代率对再生混凝土强度的影响 Influence of Quality and Replacement Ratio of Recycled Fine Aggregate on Mechanical Properties of Recycled Concrete 莫建,李秋义,岳公冰,韩帅,王晓飞 (青岛理工大学,蓝色经济区工程建设与安全协同创新中心,青岛266033) 摘要:根据《混凝土和砂浆用再生细骨料》(GB/T25176-2010),废弃混凝土经简单破碎制得Ⅱ类再生细骨料,经 二次颗粒整形制得1类再生细骨料。在五种不同胶凝材料用量的情况下,采用再生细骨料取代(中=0、25%、50%、75%、 100%)天然骨料,通过实验研究再生细骨料品质和取代率对再生混凝土3d、14d、28d和90d抗压强度的影响。结果显 示Ⅱ类再生细骨料混凝土的力学性能随着中的增加而降低,较普通混凝土降低12.8%;类再生细骨料混凝土的力学 性能随着中的增加而提高,较普通混凝土提高25.1%。 关键词:粉煤灰;夯实水泥土无侧限抗压强度 中图分类号:TU528.0 文献标识码:A 文章编号:1005-8249(2016)01-0012-04 Mo Jian ,Li Qiu-yi ,Yue Gong-bing ,Han Shuai ,Wang Xiao-fei ( CollaborativeInnovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone Qingdao Technological University ,Qingdao 266033 ,Chin ) Abstract :According Recycled Fine aggregate for concrete and mortar )(GB/T25176-2010),the waste concrete is simply crushed to class-ll recycled fine aggregate ,twice reshaped to - Irecycled fine aggregate .In the condition of five different dosage of cementitious materials ,using recycled fine aggregate to replace (= 0,25% ,50% ,75% ,100% )natural aggregate ,the influence of quality and repl...
再生细骨料品质和取代率对再生混凝土强度的影响.pdf
