The microbial induced mineral precipitation can be used to modify and improve the performance of construction materials and can partially replace ordinary Portland cement. Microbially induced carbonate precipitation (MICP) mainly uses the urease secreted during the growth of urease-producing bacteria (UPB) to hydrolyze urea produce CO₃²⁻ and reacts with Ca²⁺ to form CaCO₃. Microbially induced struvite precipitation (MISP) mainly uses the urease to decompose urea to produce NH₄⁺. In the presence of hydrogen phosphate and magnesium ions, the struvite can be precipitated. The elemental composition and chemical composition of the precipitates produced by the MICP and MISP processes are analyzed by energy dispersive X-ray spectroscopy (EDS) and powder X-ray diffraction analysis (XRD). The morphology of the precipitates can be observed by scanning electron microscope (SEM). Compared with the initial porosity, the MICP method can reduce the initial porosity of the sand column by 2.98% within 90 min. However, the MISP is only 1.45%. The permeability coefficient of the sand column can be effectively reduced in the MICP process. The total content of cementitious materials is 27.71g and 13.16g in MICP- and MISP-cemented sand columns, respectively. The MICP technology can improve the strength of alkali-activated mortars under different pH values of the UPB solution.

微生物诱导的矿物沉淀可用于改性和改善建筑材料的性能，可部分替代普通硅酸盐水泥。微生物诱导碳酸盐沉淀（MICP）主要利用产脲酶细菌（UPB）生长过程中分泌的脲酶水解尿素产生CO ₃ ^2-并与Ca ²⁺反应生成CaCO ₃。微生物诱导鸟粪石沉淀（MISP）主要利用脲酶分解尿素产生NH ₄ ⁺. 在磷酸氢盐和镁离子的存在下，鸟粪石可以沉淀出来。通过能量色散 X 射线光谱 (EDS) 和粉末 X 射线衍射分析 (XRD) 分析由 MICP 和 MISP 工艺产生的沉淀物的元素组成和化学组成。析出物的形貌可以通过扫描电子显微镜（SEM）观察。与初始孔隙度相比，MICP法可在90 min内将砂柱初始孔隙度降低2.98%。然而，MISP 仅为 1.45%。MICP工艺可以有效降低砂柱的渗透系数。MICP-和MISP-胶结砂柱中胶凝材料的总含量分别为27.71g和13.16g。