Effect of Recycled Materials on the Tensile behaviors of Steel Fiber-Reinforced Cement Composite

Conventional cement composite is generally produced with ordinary Portland cement (OPC) as a binder. However, during manufacturing the cement composite, large amount of carbon dioxide (CO2) are emitted. Therefore, recycled materials such as fly ash and recycled fine aggregate are proposed to be respectively replaced to OPC and natural sand in order to reduce CO2 emission of cement composites. For reinforcing fibers, micro steel fibers were used. For investigating mechanical properties of steel fiber-reinforced cement composites (SFRCCs), direct tension tests were conducted. The test results showed that fly ash improves tensile strength and ductility of SFRCCs. However, tensile strength of the SFRCC decreased as replacement ratio of recycled fine aggregate increased. The use of recycled materials in FRCC helps to save natural resources and promote sustainability in civil engineering materials.

传统水泥基复合材料通常以普通硅酸盐水泥（Ordinary Portland Cement, OPC）作为胶凝材料。然而，在该类复合材料的制备过程中会排放大量二氧化碳（Carbon Dioxide, CO₂）。为此，研究提出分别采用粉煤灰替代部分普通硅酸盐水泥、再生细骨料替代部分天然砂，以降低水泥基复合材料的二氧化碳排放量。增强纤维选用微钢纤维。为探究钢纤维增强水泥基复合材料（Steel Fiber-Reinforced Cement Composites, SFRCCs）的力学性能，本研究开展了直接拉伸试验。试验结果表明，粉煤灰可提升钢纤维增强水泥基复合材料的抗拉强度与延性，但随着再生细骨料替代率的提高，该复合材料的抗拉强度会随之降低。在纤维增强水泥基复合材料（Fiber Reinforced Cement Composites, FRCC）中应用再生材料，有助于节约天然资源，推动土木工程材料领域的可持续发展。

搜集汇总

背景与挑战

背景概述

该数据集研究了再生材料（飞灰和再生细骨料）对钢纤维增强水泥复合材料拉伸性能的影响，旨在减少水泥生产中的二氧化碳排放并促进可持续性。实验结果表明，飞灰能提高复合材料的拉伸强度和延性，但再生细骨料替代率的增加会降低拉伸强度。