This study focuses on the development and assessment of greener and sustainable mix of self-compacting rubberised concrete (SCRC) utilising commonly available waste materials such as fly ash, worn tires, and polyethylene terephthalate (PET) drinking bottles as fibres. Ten mixes containing ground tire rubber and PET fibres were investigated under compression, split tension, and flexure. In 05 out of 10 mixes, SCRC contained 35% fly ash by mass substitution of cement and ground tire rubber to substitute 0, 5, 10, 15, and 20% masses of fine aggregates. The remaining 05 mixes of SCRC contained a fixed 2% volume fraction of PET fibres measured by the volume of concrete. The compression, split tension, and flexure tests were performed at 28 days to assess the effects of ground tire rubber and PET fibres on the strengths, compressive stress–strain behaviour, and load–deformation behaviour. The results indicated that the replacement of 15% mass of fine aggregates with ground tire rubber is optimum without impairing the strengths of concrete. The PET fibres played a role in stabilising and improving the post-peak response in the compression and the flexure. Overall, the use of ground tire rubber as fine aggregates and PET fibres as reinforcement in concrete improved the response of concrete in compression and flexure.

这项研究的重点是利用粉煤灰，磨损的轮胎和聚对苯二甲酸乙二醇酯（PET）饮用瓶等常见的废料，开发和评估自密实橡胶混凝土（SCRC）的绿色可持续混合料。研究了十种包含磨碎的轮胎橡胶和PET纤维的混合物在压缩，劈裂张力和挠曲下的情况。在10种混合物中的05种中，SCRC含有35％的粉煤灰，通过水泥和地面轮胎橡胶的质量替代来替代0、5、10、15和20％的细骨料。剩余的05份SCRC混合物中，PET纤维的固定含量为2％（以混凝土体积计）。在28天时进行了压缩，劈拉和挠曲测试，以评估磨碎的轮胎橡胶和PET纤维对强度的影响，压缩应力-应变行为和载荷-变形行为。结果表明，在不损害混凝土强度的情况下，用磨碎的轮胎橡胶替代15％质量的细集料是最佳选择。PET纤维在压缩和弯曲过程中起到稳定和改善峰后响应的作用。总体而言，将磨碎的轮胎橡胶用作细骨料和将PET纤维用作混凝土的增强材料可改善混凝土在压缩和挠曲中的响应。