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| 硅灰对混凝土干燥收缩性能的试验研究 |
| Experimental study on the drying and shrinkage properties of silica fume |
| 投稿时间：2025-03-25 修订日期：2025-03-25 |
| DOI： |
| 中文关键词: 硅灰，水灰比，拌合物性能、干缩率 |
| 英文关键词: silica fume, water-cement ratio, mixture properties, dry shrinkage |
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| 中文摘要: |
| 通过添加不同掺量硅灰在干缩室进行干燥收缩试验，,研究硅灰掺量和水灰比对混凝土干缩率和拌合物性能的影响。试验结果表明：相同水灰比下，混凝土坍落度随着硅灰掺量的提升逐渐下降。混凝土干燥收缩率随着硅灰掺量的增加而逐渐增加，硅灰混凝土的干缩在前期 发展迅速，后期发展缓慢直至平缓；符合干缩的实际发展规律 |
| 英文摘要: |
| The effects of silica fume content and water-cement ratio on the dry shrinkage ratio and the properties of the mixture were studied by adding different amounts of silica fume in the dry shrinkage chamber. The test results show that the concrete slump gradually decreases with the increase of silica fume content under the same water-glue ratio. The drying shrinkage rate of concrete increases gradually with the increase of silica fume content, and the dry shrinkage of silica fume concrete develops rapidly in the early stage, and develops slowly until it is flat in the later stage; It is in line with the actual development law of dry shrinkage |
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