This study intends to determine the effect of fiber type and aggregate content on hardened and durability properties of self-consolidating concrete. Steel, glass, and steel/glass hybrid fibers are tested in the present experimental program. Additionally, the effect of aggregate content is considered by using different packing factors and sand-to-all aggregate ratios. Moreover, normal and high strength concrete grades are prepared. Compressive, splitting tensile, flexural, and impact tests are conducted for measuring hardened properties of concrete mixtures. Absorption, desorption, acid attack, resistivity, potential, and chloride diffusion are also durability tests carried out in the present study. Results show that 1.0% and 0.05% are the optimal dosage of steel and glass fibers respectively. Results show that packing factor plays a major role in mechanical characteristics of fiber-reinforced self-consolidating concretes so that an optimal value of 1.12 and 1.14 is obtained for mechanical properties. Also, experimental results reveal that for 1.12 packing factor, the sand-to-all aggregate ratio needs to be equal to the value of 0.50, while 0.57 is achieved as an optimum value for packing factor of 1.14. Overall, results show that hybrid-reinforced self-consolidating concrete is promising for mechanical and durability performance as compared to other mixtures.

这项研究旨在确定纤维类型和骨料含量对自固结混凝土硬化和耐久性能的影响。在本实验程序中对钢，玻璃和钢/玻璃杂化纤维进行了测试。此外，通过使用不同的填充因子和砂与所有集料的比例来考虑集料含量的影响。此外，还准备了普通和高强度混凝土等级。进行压缩，劈裂拉伸，挠曲和冲击试验以测量混凝土混合物的硬化性能。吸收，解吸，酸侵蚀，电阻率，电势和氯化物扩散也是本研究中进行的耐久性测试。结果表明，钢和玻璃纤维的最佳用量分别为1.0％和0.05％。结果表明，填充因子在纤维增强自固结混凝土的机械特性中起主要作用，因此机械性能的最佳值为1.12和1.14。此外，实验结果还表明，对于1.12的填充系数，砂与全部集料之比必须等于0.50，而对于1.14的填充系数，最佳值为0.57。总体而言，结果表明，与其他混合物相比，混杂增强的自固结混凝土在机械性能和耐久性能方面很有希望。砂与全部骨料之比必须等于0.50，而对于堆积系数1.14而言，最佳值应达到0.57。总体而言，结果表明，与其他混合物相比，混杂增强的自固结混凝土在机械性能和耐久性能方面很有希望。砂与全部骨料之比必须等于0.50，而对于堆积系数1.14而言，最佳值应达到0.57。总体而言，结果表明，与其他混合物相比，混杂增强的自固结混凝土在机械性能和耐久性能方面很有希望。