| 龚 英,丁晶晶,祝小靓.石粉掺合料对碾压混凝土工作性及强度的影响[J].江西水利科技,2018,(1):46-49 |
| 石粉掺合料对碾压混凝土工作性及强度的影响 |
| Influence of stone powder on roller compacted concrete workability and strength |
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| DOI： |
| 中文关键词: 石粉 碾压混凝土 工作性 强度 |
| 英文关键词: Stone powder RCC Workability Strength |
| 基金项目: |
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| 中文摘要: |
| 粉煤灰资源日益紧张，采用石粉替代粉煤灰势在必行.保证掺合料掺量不变，石粉以不同掺量取代粉煤灰，以单掺粉煤灰为基准，对比研究石粉掺合料对碾压混凝土工作性及强度的影响.结果表明：与单掺粉煤灰相比，掺入石粉会改善碾压混凝土工作性，降低碾压混凝土强度；掺入石粉对碾压混凝土劈裂抗拉强度影响较大，对混凝土抗压强度影响较小.石粉掺量15%、粉煤灰掺量40%，可配制出满足强度设计要求的碾压混凝土，既减少了强度的浪费，又兼顾经济环保. |
| 英文摘要: |
| Fly ash is in short of supply.Research on how far stone powder replaced fly ash need to be done.With admixture dosage unchanged，fly ash was replaced by different content of stone powder.Compared with fly ash，the effect of fly ash-stone powder on roller compacted concrete(RCC)workability and strength were studied.Results showed that，RCC workability was improved by adding stone powder.RCC strength was reduced by adding stone powder.Compared with RCC compressive strength，Stone powder admixture had a greater impact on RCC splitting tensile strength.Mixed with 15% amount of stone powder and 40% amount of fly ash，RCC compressive strength could meet design requirements.Adding stone powder could reduce the waste of RCC compressive strength and could be an economic environment measure. |
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