目前农用沼气池普遍采用混凝土现浇工艺,冬季现浇沼气池,必须充分注意温度过低的影响。当日平均温度降到4℃以下,混凝土的凝固硬化就需要很长时间。为了使混凝土不致遭受冻害而破坏,就需提高混凝土的浇灌温度,而且必须进行早期养护。 At present, the agricultural biogas digesters generally adopt concrete cast-in-place technology, and in-situ biogas digesters in winter must pay full attention to the effects of low temperature. When the average temperature falls below 4°C on that day, the solidification and hardening of the concrete takes a long time. In order to prevent the concrete from being damaged by frost damage, it is necessary to increase the temperature of the concrete to be poured, and it is necessary to carry out early conservation.