不同类型纤维加固的硫铝酸钙水泥基混凝土的 工程性能评估
摘要
多的关注。本文评估了不同类型的纤维对不同水灰比(0.35和 0.28)的 CSA基混凝土工程特性的影响。在这项研究
中,金属纤维包括双钩端钢纤维和钩端钢纤维,以及非金属纤维(即聚乙烯醇(PVA)纤维)被利用,纤维含量为
1%。混凝土的机械性能在不同的养护年龄被评估。混凝土混合物的尺寸稳定性也得到了检验。结果表明,通过在混
凝土中引入纤维,无论纤维类型如何,混凝土的工程性能都得到了改善。此外,DHE钢纤维对 CSA水泥基混凝土的
抗折性能有重要影响,并导致挠度硬化行为。据观察,纤维特别是 PVA纤维会导致收缩变形的减少。微观结构测试
表明,棱镜状的埃特灵石是 CSA水泥基混凝土的主要水化产物。
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DOI: http://dx.doi.org/10.12361/2661-3549-04-06-93336
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