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首页> 外文期刊>International Journal of Engineering and Technology >Development of High Strength Self Compacting Mortar with Hybrid Blend of Polypropylene and Steel Fibers
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Development of High Strength Self Compacting Mortar with Hybrid Blend of Polypropylene and Steel Fibers

机译：聚丙烯与钢纤维混合共混高强自压实砂浆的研制。

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Use of self-compacting concrete (SCC) is gaining popularity due to its flowability and hence higher workability but producing SCC of elevated mechanical properties and better durability aspects often is a challenge to the construction industry. Hybrid fiber systems have been found to be effective in previous research works to improve mechanical properties and thus the issue has been addressed here through research on combination of steel and polypropylene (PP) fibers in SCC mix. Combination of steel and PP fibres has been tried and they seem to affect strength and other properties in different ways. Total Fiber content was kept constant at 1.5%. There was an increase in compressive strength and a much higher improvement in flexural strength through use of hybrid fibers along with durability aspects such as drying shrinkage, water penetration length and loss in strength due to exposure of sea water (90 days) saw considerable improvement. Workability was reduced when fiber was added to flowable SCC used and demanded increase in superplasticizer dosage to attain the same slump value as control.
机译：自密实混凝土（SCC）的使用由于其流动性和较高的可加工性而日益受到欢迎，但是生产具有提高的机械性能和更好的耐久性方面的SCC通常是对建筑行业的挑战。在以前的研究工作中，已经发现混合纤维系统对于改善机械性能是有效的，因此，通过研究SCC混合物中钢和聚丙烯（PP）纤维的组合，可以解决该问题。已尝试将钢纤维和PP纤维组合使用，它们似乎以不同的方式影响强度和其他性能。总纤维含量保持恒定在1.5％。通过使用杂化纤维，抗压强度有所提高，抗弯强度有了更大的提高，而耐久性方面（如干缩，水渗透长度和由于暴露于海水（90天）而导致的强度损失）则得到了显着改善。当将纤维添加到使用的可流动SCC中时，可加工性降低，并且要求增加超塑化剂的用量以达到与对照相同的坍落度值。

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