再生輕骨料自密實混凝土力學和耐久性能研究*
付士峰1,2，張廣田3,4, 劉娟紅3
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（1河北工業(yè)大學土木工程學院，天津 300401; 2 河北省建筑科學研究院，石家莊 050021; 3 北京科技大學土木與環(huán)境工程學院， 北京 100833；4 河北建研科技有限公司，石家莊 050021）
［摘要］利用陶粒和以廢磚顆粒為主的建筑垃圾制備再生輕骨料自密實混凝土，采用單因素法研究了不同粉煤灰摻量、水膠比、建筑垃圾取代量對混凝土工作性能和強度的影響，在此基礎上得出最優(yōu)配合比；并測試了最優(yōu)配合比混凝土的耐久性與導熱系數(shù)。試驗結果表明：粉煤灰的摻量占膠凝材料總量的30%左右、建筑垃圾顆粒摻量為總質量的40%時，混凝土的品質最好；并且通過調整水膠比的值，能有效減小建筑垃圾帶來的弱化作用。［關鍵詞］配合比優(yōu)化; 再生輕骨料; 強度; 耐久性中圖分類號：TU525 文獻標識碼：A 文章編號：1002-848X(2016)12-0041-04
Study on mechanical property and durability of recycled lightweight aggregate self-compacting concreteFu Shifeng1,2, Zhang Guangtian3,4, Liu Juanhong3（1 School of Civil Engineering, Hebei University of Technology, Tianjin 300401, China; 2 Hebei Academy of Building Research, Shijiazhuang 050021, China; 3 College of Civil and Environmental Engineering, Beijing University of Science and Technology, Beijing 100833, China; 4 Hebei Institute of Technology Co., Ltd., Shijiazhuang 050021, China）Abstract: Recycled lightweight aggregate self-compacting concrete was produced by ceramsite and construction waste mainly including waste brick granules. Optimum mix proportion was obtained using the single factor method to study influences of different fly ash, ratio of water-binder and construction waste replacement on the workability and strength of concrete. And the durability properties and thermal conductivity of the concrete with optimal mix ratio were tested. The result indicates that it can get best concrete quality with about 30% fly ash in the total cementitious materials and 40% construction waste aggregate in total weight. And it can effectively reduce the weakening effect of construction waste by adjusting the water-binder ratio.Keywords: mix proportion optimization; recycled lightweight aggregate; strength; durability
*河北省科技支撐項目（13211213D）,河北省建設科技研究指導性計劃項目（2015-210）。作者簡介：付士峰，博士研究生,高級工程師，Email:18033878005@163.com。
