四川建材
四川建材
사천건재
SICHUAN BUILDING MATERIALS
2013年
5期
32-33
,共2页
自密实混凝土%正交试验设计%最佳配合比
自密實混凝土%正交試驗設計%最佳配閤比
자밀실혼응토%정교시험설계%최가배합비
Self-Compress Concrete%Orthogonal Exper-iment%Otimal Proportion
自密实混凝土是在低水胶比、低水泥用量的前提下选择适合的配合比设计方法,在不同级配的粗细骨料、不同特性的胶结材料、不同功能要求的混凝土外加剂中选择适合的原材料配制的混凝土。自密实混凝土发明以来,以其良好的工作性能和力学性能在土木建筑工程领域得到广泛应用。通过正交试验测得的试验数据,以新拌合混凝土的坍落度、坍落扩展度以及混凝土硬化28天后的抗压强度和劈裂抗拉强度为考核指标以满足自密实混凝土的工作性能要求,为自密实混凝土推广应用提供依据。
自密實混凝土是在低水膠比、低水泥用量的前提下選擇適閤的配閤比設計方法,在不同級配的粗細骨料、不同特性的膠結材料、不同功能要求的混凝土外加劑中選擇適閤的原材料配製的混凝土。自密實混凝土髮明以來,以其良好的工作性能和力學性能在土木建築工程領域得到廣汎應用。通過正交試驗測得的試驗數據,以新拌閤混凝土的坍落度、坍落擴展度以及混凝土硬化28天後的抗壓彊度和劈裂抗拉彊度為攷覈指標以滿足自密實混凝土的工作性能要求,為自密實混凝土推廣應用提供依據。
자밀실혼응토시재저수효비、저수니용량적전제하선택괄합적배합비설계방법,재불동급배적조세골료、불동특성적효결재료、불동공능요구적혼응토외가제중선택괄합적원재료배제적혼응토。자밀실혼응토발명이래,이기량호적공작성능화역학성능재토목건축공정영역득도엄범응용。통과정교시험측득적시험수거,이신반합혼응토적담락도、담락확전도이급혼응토경화28천후적항압강도화벽렬항랍강도위고핵지표이만족자밀실혼응토적공작성능요구,위자밀실혼응토추엄응용제공의거。
Self-compacting concrete is in the premise of the low water-cement ratio, the low amount of cement content, through the choice of different gradation of coarse aggregate dif-ferent characteristics of the cementing materials, different func-tional requirements of concrete admixture and select suitable ratio design method of concrete. Self-compacting concrete was wide-ly used in civil engineering construction with its superexcellent workability and perfect mechanical properties since its invention. Mix designs of self compacting concrete were calculated using the modified overall calculation method. Through the orthogonal ex-periment data, adopt the 28 - days compressive strength and splitting tensile strength of self-compacting concrete to meet the strength requirement of preparation. The results provided good references for self - compacting concrete applications in engi-neering.