高速铁路技术
高速鐵路技術
고속철로기술
HIGH SPEED RAILWAY TECHNOLOGY
2011年
6期
15-17
,共3页
活性粉末混凝土%配合比%试验研究
活性粉末混凝土%配閤比%試驗研究
활성분말혼응토%배합비%시험연구
reactive powder concrete%mixing proportion%experiment and research
通过活性粉末、石英砂、钢纤维、聚羧酸系高性能减水剂等材料的配制试验，分析并研究了石英砂在多级配骨料下不同水胶比、不同钢纤维掺量对RPC抗折、抗压强度的影响。各项性能指标试验结果表明普通硅灰、粉煤灰、矿粉、聚羧酸减水剂代替特殊专用掺和料和专用外加剂配制RPC混凝土能达到客运专线RPC混凝土的验标要求。
通過活性粉末、石英砂、鋼纖維、聚羧痠繫高性能減水劑等材料的配製試驗，分析併研究瞭石英砂在多級配骨料下不同水膠比、不同鋼纖維摻量對RPC抗摺、抗壓彊度的影響。各項性能指標試驗結果錶明普通硅灰、粉煤灰、礦粉、聚羧痠減水劑代替特殊專用摻和料和專用外加劑配製RPC混凝土能達到客運專線RPC混凝土的驗標要求。
통과활성분말、석영사、강섬유、취최산계고성능감수제등재료적배제시험，분석병연구료석영사재다급배골료하불동수효비、불동강섬유참량대RPC항절、항압강도적영향。각항성능지표시험결과표명보통규회、분매회、광분、취최산감수제대체특수전용참화료화전용외가제배제RPC혼응토능체도객운전선RPC혼응토적험표요구。
Through the compound experiment of such materials as reactive powder, quartz sand, steel fiber and high performance water reducer of poly carboxylic acid system, this paper analyzes the influences on anti-fracture and anti-pressure of RPC caused by multi-grading aggregates of quartz sand with different water-glue ratio and steel fiber mixing. Each result of performance index shows that the common siliceous dust, fly ash, mineral powder, poly carboxylic acid water reducer can substitute special additives and admixtures to be mixed with RPC and reach the requirement of acceptance standard of RPC for PDL.
