Effects on the Physical and Mechanical Properties of Porous Concrete for Plant Growth of Blast Furnace Slag, Natural Jute Fiber, and Styrene Butadiene Latex Using a Dry Mixing Manufacturing Process.
Effects on the Physical and Mechanical Properties of Porous Concrete for Plant Growth of Blast Furnace Slag, Natural Jute Fiber, and Styrene Butadiene Latex Using a Dry Mixing Manufacturing Process.
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DOI：
10.3390/ma9020084
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发表时间：
2016-01-29
期刊：
影响因子：
--
通讯作者：
Park CG
中科院分区：
文献类型：
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作者：
Kim HH;Kim CS;Jeon JH;Park CG
为评价工业副产物对植物生长多孔混凝土性能的影响，研究了以60%（质量分数）高炉矿渣粉替代水泥，以0%、20%、40%（质量分数）高炉矿渣粗骨料替代天然石料制备的植物生长多孔混凝土的物理性能、强度和抗冻融性能。60重量%和100重量%。此外，这些混凝土混合物中加入天然黄麻纤维和苯乙烯丁二烯（SB）胶乳的效果进行了评价。测定了样品的孔隙比、抗压强度和抗冻融性。随着高炉骨料取代率的增加、胶乳的掺入和天然黄麻纤维的掺入，混凝土的空隙率增加。抗压强度随着矿渣骨料取代率的增加而降低。100次冻融循环后，无论高炉矿渣骨料的替代率或天然黄麻纤维和胶乳的加入，抗压强度下降。天然黄麻纤维和胶乳的加入降低了100次冻融循环后的抗压强度。试验结果表明，控制混合物满足10 MPa的目标抗压强度和25%的目标孔隙比在置换率为0%和20%的高炉骨料，和含有胶乳的混合物满足标准的骨料置换率为60%。然而，含有天然黄麻纤维的混合物并不满足这些标准。100次冻融循环后的孔隙比和残余抗压强度之间的关系表明，对照混合物和含有黄麻纤维的混合物在骨料取代率为20%和40%时满足25%的目标孔隙比和超过80%的目标残余抗压强度。含胶乳和骨料取代率高达60%的混合物满足目标孔隙比和抗压强度。
To evaluate the effects of industrial by-products materials on the performance of porous concrete for plant growth, this study investigated the physical, strength, and freeze/thaw resistances of porous concrete for plant growth, prepared by replacing cement with blast furnace slag powder at 60% by weight, and replacing natural stone aggregates with coarse blast furnace slag aggregates at rates of 0%, 20%, 40%, 60% and 100% by weight. In addition, the effects of adding natural jute fiber and styrene butadiene (SB) latex to these concrete mixtures were evaluated. The void ratio, compressive strength, and freeze/thaw resistance of the samples were measured. With increasing replacement rate of blast furnace aggregates, addition of latex, and mixing of natural jute fiber the void ratio of the concrete was increased. Compressive strength decreased as the replacement rate of blast-furnace slag aggregates increased. The compressive strength decreased after 100 freeze/thaw cycles, regardless of the replacement rate of blast furnace slag aggregates or of the addition of natural jute fiber and latex. The addition of natural jute fiber and latex decreased the compressive strength after 100 freeze/thaw cycles. The test results indicate that the control mixture satisfied the target compressive strength of 10 MPa and the target void ratio of 25% at replacement rates of 0% and 20% for blast furnace aggregates, and that the mixtures containing latex satisfied the criteria up to an aggregate replacement rate of 60%. However, the mixtures containing natural jute fiber did not satisfy these criteria. The relationship between void ratio and residual compressive strength after 100 freeze/thaw cycles indicates that the control mixture and the mixtures containing jute fiber at aggregate replacement rates of 20% and 40% satisfied the target void ratio of 25% and the target residual compressive strength of over 80% after 100 freeze/thaw cycles. The mixtures containing latex and aggregate replacement rates up to 60% satisfied the target void ratio and compressive strength.