粉煤灰共掺椰壳纤维增韧水泥基材料性能研究

Study on Properties of Cement-Based Materials with Coir Fiber and Fly Ash

以水泥、粉煤灰和砂为基体、加入椰壳纤维,制备椰壳纤维增韧水泥基复合材料。研究粉煤灰替代率、椰壳纤维长度对椰壳纤维增韧水泥基复合材料密度、吸水率、含水率、抗压强度以及抗折强度的影响。结果表明:随着椰壳纤维长度的增加,粉煤灰部分替代水泥的椰壳纤维增韧水泥基复合材料的抗折强度不断升高,长纤维的加入有明显增韧作用;较低粉煤灰替代率的椰壳纤维增韧水泥基复合材料的整体密度、抗压强度和抗折强度较高。

With cement,fly ash,and sand as substrates,coconut husk fibers are appended to develop coconut husk fiber fortified cement-based composite materials.This paper probes into impacts of fly ash replacement percentage and coconut husk fiber length on properties of the composite materials like density,water absorption,moisture content,compressive strength,and flexural strength.Findings reveal that with increasing coconut husk fiber length,the flexural strength of coconut husk fiber toughened cement-based composite materials where fly ash partly replaces cement persists ascending,and long fiber addition produces an evident strengthening effect.The total density,compressive strength,and flexural strength of coconut husk fiber fortified cement-based composite materials with lower fly ash replacement ratio are superior.