目前,我国农村主要使用的建池材料有:水泥、沙和石子等,在选用建池材料时,要在保证建池质量的前提下,因地制宜就地取材,减少运输、降低造价。水泥建沼气池的水泥,一般选用325号、425号普通硅酸盐水泥、火山灰质硅酸盐水泥和矿渣硅酸盐水泥。其特性如下:①普通硅酸盐水泥。和匀性好,快硬。早期强度高,抗冻、耐磨、抗渗性较强,缺点是耐酸、碱等化学腐蚀较差。②矿渣硅酸盐水泥,耐热性好,水化热较低,耐硫酸盐类 At present, the main pool materials used in rural areas in our country include: cement, sand and gravel, etc. When selecting materials for construction of ponds, we must take measures to local conditions, reduce transportation and reduce costs while ensuring the quality of construction ponds. Cement to build digesters cement, general 325, 425 ordinary Portland cement, pozzolana Portland cement and slag Portland cement. Its characteristics are as follows: ① ordinary Portland cement. And uniform, fast hardening. Early high strength, antifreeze, wear resistance, impermeability strong, the disadvantage is acid, alkali and other chemical corrosion is poor. ② slag Portland cement, good heat resistance, heat of hydration is lower, sulfate-resistant