發(fā)布時(shí)間：2018-09-02 08:51

【摘要】：基于核磁共振(NMR)測(cè)試技術(shù),選取紅浮石、黑浮石和碎石為粗骨料,研究不同粗骨料混凝土內(nèi)部孔隙特征,并對(duì)混凝土進(jìn)行抗壓強(qiáng)度試驗(yàn)。結(jié)果表明,齡期為28d混凝土強(qiáng)度由高到低順序?yàn)樗槭炷梁诟∈炷良t浮石混凝土,浮石混凝土T_2譜分布主要為2個(gè)峰,碎石混凝土T_2譜分布主要為3個(gè)峰,且T_2譜面積由大到小為紅浮石混凝土黑浮石混凝土碎石混凝土,浮石混凝土中毛細(xì)孔和非毛細(xì)孔總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.
【作者單位】： 內(nèi)蒙古農(nóng)業(yè)大學(xué)水利與土木建筑工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51569021,51769025) 內(nèi)蒙古自治區(qū)博士研究生科研創(chuàng)新重點(diǎn)資助項(xiàng)目(B20161012908Z)
【分類(lèi)號(hào)】：TU528

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