The disposal of rubber tyres is one of the common causes of environmental pollution. This problem may be solved using crumb rubber (CR) as a construction material without side effects. Therefore, an attempt has been initiated in the present experimental study to prepare green concrete by replacing various sustainable materials in multiple percentages. This study continues with fatigue and mechanical properties, crack patterns, load–displacement behaviours under cyclic load and failure modes of normal concrete, CR concrete (CRC) and Alccofine-based CRC. Nineteen different mixes are taken into account with 5 and 7% replacements of CR (10, 12 and 20 mesh) with sand and different proportions of silica fume, fly ash and Alccofine. The compressive strength and splitting tensile strength are reduced with the increase in CR content and inversely increase with the rise in CR size. Therefore, Alccofine and silica fume have been used to resolve the problems of strength reduction. The results indicate that the failure manner of CRC beams is gradual, which means enhancement of structural ductility. Finally, this study proposes the application of Alccofine- and silica-fume-based CRC for magnifying structural ductility.

中文翻译：

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Alccofine基胶粉混凝土疲劳性能的试验研究

橡胶轮胎的处置是造成环境污染的常见原因之一。这个问题可以使用碎胶 (CR) 作为一种没有副作用的建筑材料来解决。因此，本实验研究开始尝试通过以多种百分比替代各种可持续材料来制备绿色混凝土。本研究继续研究普通混凝土、CR 混凝土 (CRC) 和基于 Alccofine 的 CRC 的疲劳和机械性能、裂纹模式、循环载荷下的载荷位移行为和破坏模式。考虑了 19 种不同的混合物，用沙子和不同比例的硅粉、粉煤灰和 Alccofine 替代 5% 和 7% 的 CR（10、12 和 20 目）。抗压强度和劈裂抗拉强度随着CR含量的增加而降低，并随着CR尺寸的增加而增加。因此，已经使用Alccofine和硅粉来解决强度降低的问题。结果表明，CRC梁的破坏方式是渐进的，意味着结构延性的增强。最后，本研究提出了基于 Alccofine 和硅粉的 CRC 在放大结构延展性方面的应用。