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1987年,我们在青海某厂试用粘补法修复了几座大型酸水处理池,经半年多生产证明效果良好。这些酸水池(共八座)的容积约为700～3000m~3。其底、壁为厚度300mm的M20防水钢筋混凝土,在建成后数月产生了裂缝。其中较大的裂缝宽度达10～30mm,均在池壁上为坚向缝,每个池子有3～5道;较小的裂缝宽度为5mm左右,每个池子的底、壁上均有5～6道。裂缝出现后,经三个多月的观察,趋于稳定,不再继续扩展。分析其原因可
In 1987, we repaired several large acid-water treatment tanks in a factory in Qinghai using a trial of viscose-complementation method. After more than six months of production, it proved to be effective. The volume of these acid pools (a total of eight) is approximately 700-3000 m-3. Its bottom and walls are M20 waterproof reinforced concrete with a thickness of 300mm, and cracks have been generated several months after completion. The larger cracks have a width of 10-30mm, and they all have a rigid seam on the pool wall. Each pool has 3 to 5 channels; the smaller cracks have a width of about 5mm, and each tank has 5 on the bottom and on the wall. ~6 roads. After the cracks appeared, after more than three months of observation, they stabilized and did not continue to expand. Analyze why