基于核磁共振技术对不同粗骨料混凝土孔隙特征试验研究
发布时间：2018-09-02 08:51
【摘要】：基于核磁共振(NMR)测试技术,选取红浮石、黑浮石和碎石为粗骨料,研究不同粗骨料混凝土内部孔隙特征,并对混凝土进行抗压强度试验。结果表明,龄期为28d混凝土强度由高到低顺序为碎石混凝土黑浮石混凝土红浮石混凝土,浮石混凝土T_2谱分布主要为2个峰,碎石混凝土T_2谱分布主要为3个峰,且T_2谱面积由大到小为红浮石混凝土黑浮石混凝土碎石混凝土,浮石混凝土中毛细孔和非毛细孔总和所占比例大于碎石混凝土。
[Abstract]:Based on NMR (NMR) technique, red pumice, black pumice and gravel were selected as coarse aggregate to study the internal pore characteristics of different coarse aggregate concrete, and the compressive strength of concrete was tested. The results show that the strength of concrete of 28d is macadam concrete, black pumice concrete red floatstone concrete, pumice concrete Tass _ 2 spectrum distribution is mainly two peaks, macadam concrete Tass _ 2 spectrum distribution is mainly three peaks. And the area of T _ 2 spectrum is red floatstone concrete black pumice concrete macadam concrete from large to small. The total proportion of capillary pore and non-capillary pore in pumice concrete is larger than that in crushed stone concrete.
【作者单位】： 内蒙古农业大学水利与土木建筑工程学院;
【基金】：国家自然科学基金资助项目(51569021,51769025) 内蒙古自治区博士研究生科研创新重点资助项目(B20161012908Z)
【分类号】：TU528
[Abstract]:Based on NMR (NMR) technique, red pumice, black pumice and gravel were selected as coarse aggregate to study the internal pore characteristics of different coarse aggregate concrete, and the compressive strength of concrete was tested. The results show that the strength of concrete of 28d is macadam concrete, black pumice concrete red floatstone concrete, pumice concrete Tass _ 2 spectrum distribution is mainly two peaks, macadam concrete Tass _ 2 spectrum distribution is mainly three peaks. And the area of T _ 2 spectrum is red floatstone concrete black pumice concrete macadam concrete from large to small. The total proportion of capillary pore and non-capillary pore in pumice concrete is larger than that in crushed stone concrete.
【作者单位】： 内蒙古农业大学水利与土木建筑工程学院;
【基金】：国家自然科学基金资助项目(51569021,51769025) 内蒙古自治区博士研究生科研创新重点资助项目(B20161012908Z)
【分类号】：TU528
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