利用快硬硫铝酸盐水泥和引气剂、减水剂、稳泡剂以及短切聚丙烯纤维制备水泥基泡沫材料,研究了聚丙烯纤维掺量对材料表观密度、抗压强度、孔隙率以及孔结构和压折比的影响.结果表明,表观密度随纤维掺量增加而线性增大,当纤维掺量由0增加至0.25％时,表观密度增大了26.7％.对于抗压强度存在最佳纤维掺量,当掺量为0.15％时,抗压强度达到最大值.纤维掺量增加有利于材料韧性提高,但不利于封闭孔隙的形成,当纤维掺量由0.2％增大至0.25％时,压折比降低了14.4％,“体积吸水率与孔隙率比”增大了59.2％.
参考文献
| [1] | 刘义生,温大维.应用泡沫水泥治理特大顶板垮落空硐[J].煤炭科学技术,2004(12):33-35. |
| [2] | 胡焕校,罗玮,唐良智,彭春雷,夏凌云.轻质泡沫水泥注浆材料的应用研究[J].中南林业科技大学学报,2011(02):82-85. |
| [3] | 赵永峰,段海娟,赵金城,于彦飞.在建高层建筑外保温材料立体燃烧的火灾蔓延规律[J].消防科学与技术,2013(12):1319-1323. |
| [4] | Ya-Mei Zhang;Shen-Xia Chen;Bo Chen;Wei Sun .Dry Shrinkage, Frost Resistance and Permeability of Rubber Included Concrete[J].Key engineering materials,2006(302/303):120-124. |
| [5] | T. Sebok;O. Stranel .Wear resistance of polymer-impregnated mortars and concrete[J].Cement and Concrete Research,2004(10):1853-1858. |
| [6] | A. Beeldens;D. Van Gemert;H. Schorn;Y. Ohama;L. Czarnecki .From microstructure to macrostructure: an integrated model of structure formation in polymer-modified concrete[J].Materials and structures,2005(280):601-607. |
| [7] | Ru Wang;Pei-Ming Wang;Li-Juan Yao .Effect of redispersible vinyl acetate and versatate copolymer powder on flexibility of cement mortar[J].Construction and Building MATERIALS,2012(1):259-262. |
| [8] | Flavio L.Maranhao;Kai Loh;Vanderley M.John .The influence of moisture on the deformability of cement-polymer adhesive mortar[J].Construction and Building Materials,2011(6):2948-2954. |
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