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首页> 外文期刊>Advanced Science Letters >Effect of Polyolefin Fibers and Ultrafine Slag Powders on the Mechanical Properties and Permeability of Cement-Based Composites
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Effect of Polyolefin Fibers and Ultrafine Slag Powders on the Mechanical Properties and Permeability of Cement-Based Composites

机译：聚烯烃纤维和超细矿渣粉对水泥基复合材料力学性能和渗透性的影响

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摘要

This study evaluated the mechanical properties and permeability of cement-based composites comprising polyolefin fibers and ultrafine slag powders. Testing procedures included compressive strength, splitting tensile strength, rapid chloride penetration, chloride migration coefficient in a non-steady state, open circuit potential, and corrosion rate. One water/cementitious ratio (0.55), two proportions of ultrafine slag powders (0% and 40% by weight of cement) and four proportions of polyolefin fibers (0%, 0.4% or 0.8% and 1.6% by weight of volume) were used in the study. Test results indicate that the specimens containing ultrafine slag powders had higher compressive strength and better permeability than the control specimens. The specimens made with polyolefin fiber had considerably higher tensile strength than the control and ultrafine slag powders specimens. The specimens containing both polyolefin fiber and ultrafine slag powders exhibited improved permeability; however, the distribution of fibers could not be controlled, resulting in a notable lack of uniformity in the samples. A mix of 40% ultrafine slag powders and 0.8% polyolefin fiber provided the optimal combination of mechanical properties and permeability.
机译：这项研究评估了包含聚烯烃纤维和超细矿渣粉的水泥基复合材料的机械性能和渗透性。测试程序包括抗压强度，抗张强度，快速的氯化物渗透，非稳态的氯化物迁移系数，开路电势和腐蚀速率。水/水泥比为（0.55），超细矿渣粉为2份（水泥重量为0％和40％）和聚烯烃纤维为4份（体积重量为0％，0.4％或0.8％和1.6％）在研究中使用。试验结果表明，含有超细矿渣粉的试样具有比对照试样更高的抗压强度和更好的渗透性。用聚烯烃纤维制成的样品具有比对照和超细渣粉样品更高的拉伸强度。包含聚烯烃纤维和超细矿渣粉的样品均显示出改善的渗透性。然而，纤维的分布无法控制，导致样品中明显缺乏均匀性。 40％的超细矿渣粉和0.8％的聚烯烃纤维的混合物提供了机械性能和渗透性的最佳组合。

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