Many researchers believe that the adhesion failure between rubber and cement paste is one of the main reasons the strength of concrete containing these aggregates drops sharply. This paper provides strength and durability experiment results which reveal the effect of pre-coating rubber granules with crushed dune sand in terms of their mechanical performance, these tests aimed to enhance the durability properties of self-compacting concretes (SCC) transfer properties and structure. Results show that mechanical properties of SCC made with treated rubber granules are improved compared with concrete mix made with the untreated rubber. Natural sand is replaced with 2.5% of rubber granules pre-coating with (0–20%) of crushed dune sand as partial replacement of cement. The compressive strength of SCC rises with the proportionate increase of the crushed dune sand percentage. This could confirm the strengthening of the transition zone (between cement paste and rubber aggregate) by introducing siliceous additions with high fineness.

中文翻译：

---

包含预涂橡胶骨料和沙丘碎屑的自密实混凝土的硬化和转移性能

许多研究人员认为，橡胶与水泥浆之间的粘合失败是含有这些骨料的混凝土强度急剧下降的主要原因之一。本文提供了强度和耐久性实验结果，这些结果揭示了用粉碎的沙丘砂预涂橡胶颗粒的力学性能，这些测试旨在增强自密实混凝土（SCC）传递特性和结构的耐久性。结果表明，与未处理橡胶制成的混凝土混合物相比，用处理过的橡胶颗粒制成的SCC的机械性能有所改善。用2.5％的橡胶颗粒预涂天然砂，再用（0-20％）碎沙丘砂代替部分水泥。SCC的抗压强度随破碎沙丘百分比的增加而增加。通过引入高细度的硅质添加剂，可以确认过渡区（水泥浆和橡胶骨料之间）的增强。