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首页> 外文期刊>Journal of Civil Engineering and Construction Technology >Effects of Cissus populnea gum and rubber latex on physico-mechanical properties of cement-bonded rattan composites
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Effects of Cissus populnea gum and rubber latex on physico-mechanical properties of cement-bonded rattan composites

机译：s草胶和胶乳对水泥粘合藤复合材料物理力学性能的影响

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In this study, the effects of partial replacement of ordinary Portland cement with natural polymers on selected physical and mechanical properties of cement-bonded rattan composites was investigated. Fibrous particles of Laccosperma secundiflorum rattan cane species were mixed with cement mortar at two levels, that is, 2.5 and 5.0%. For experimentation, Portland cement was partially replaced at four levels, first with Cissus populnea gum (0, 10, 20, and 30%) and then natural rubber latex (0, 2.5, 5.0, and 10%). All test specimens were prepared and tested in accordance with ISO 8335 standard. Results obtained showed that the moisture content, density, water absorption, thickness, and bending strength of the composites met the minimum standard requirements, except for samples produced using 30% C. populnea and 5% rattan fibre that fell short of the 9 N/mm2 minimum bending strength requirement. Partial replacement of cement with the two polymers resulted in a general increase in density. Analyses of variance showed that C. populnea gum had a significant effect (p<5%) on water absorption after 24 h of immersion, while natural rubber latex and C. populnea gum had significant effects on thickness swelling at 2 and 24 h of immersion, respectively. Also, C. populnea gum and rattan fibre contents had significant effects on the bending strength of the composites. It was concluded that Portland cement could be partially replaced with up to 20% of C. populnea gum or up to 2.5% of rubber latex in rattan-cement composite manufacture without adverse effects on the basic composite properties tested.
机译：在这项研究中，研究了用天然聚合物部分替代普通波特兰水泥对水泥粘结的藤条复合材料选择的物理和机械性能的影响。将藤本紫藤藤藤种的纤维颗粒与水泥砂浆以两种水平混合，即2.5％和5.0％。为了进行试验，将波特兰水泥分为四个级别部分替换，首先用Cissus populnea胶（0％，10％，20％和30％），然后是天然橡胶胶乳（0％，2.5％，5.0％和10％）。所有样品均按照ISO 8335标准进行制备和测试。所得结果表明，复合材料的水分含量，密度，吸水率，厚度和抗弯强度均满足最低标准要求，但使用30％的棉梭菌和5％藤条纤维生产的样品未达到9 N / mm2最小弯曲强度要求。用两种聚合物部分替代水泥导致密度普遍增加。方差分析表明，浸泡24小时后，C。populnea胶对吸水率有显着影响（p <5％），而天然橡胶胶乳和C. populnea胶在浸泡2和24 h时对厚度溶胀有显着影响， 分别。同样，C。populnea胶和藤条纤维含量对复合材料的弯曲强度也有显着影响。结论是，在藤制水泥复合材料生产中，波特兰水泥可以部分替换为20％的C. populnea胶或高达2.5％的橡胶胶乳，而对测试的基本复合材料性能没有不利影响。

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