Ashad Hanafi
Department of Civil Engineering, Universitas Muslim Indonesia, Makassar, South Sulawesi, 90232, Indonesia.
Heliyon. 2023 Jan 31;9(2):e13303. doi: 10.1016/j.heliyon.2023.e13303. eCollection 2023 Feb.
This study examined the impact of microorganism intrusion on concrete's physical and mechanical properties and efforts to minimize the effect by using nickel waste as a partial substitute for cement. The microorganisms resulted from the natural fermentation of coconut water which intruded into the concrete material, harming the concrete's physical and mechanical properties. Physical and mechanical properties observed were porosity, permeability, and compressive strength. The results indicated that the intrusion of microorganisms into the concrete material increased porosity and permeability and decreased the compressive strength of the concrete. Using nickel slag as a partial cement substitution material with an optimal percentage of 15% was employed to overcome these impacts.
本研究考察了微生物侵入对混凝土物理力学性能的影响，以及通过使用镍渣作为水泥的部分替代品来尽量减少这种影响的措施。微生物源自侵入混凝土材料的椰汁自然发酵，损害了混凝土的物理力学性能。所观察的物理力学性能包括孔隙率、渗透率和抗压强度。结果表明，微生物侵入混凝土材料会增加孔隙率和渗透率，并降低混凝土的抗压强度。采用镍渣作为部分水泥替代材料，最佳替代比例为15%，以克服这些影响。
