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在新鲜的混凝土混合物中加入二氧化碳气体,可以提高喷射混凝土的硬化速度,降低混凝土的碱性,使混凝土28天时的 pH 值≤10。每立方米喷射混凝土混合物中含有400千克水泥,这种水泥中 C_3 S 的含量为62%。混凝土混合物的水灰比为0.4。另外还含有颗粒尺
Adding carbon dioxide gas to the fresh concrete mixture can increase the hardening speed of the shotcrete and reduce the alkalinity of the concrete, so that the pH of the concrete at 28 days is ≤10. There are 400 kg of cement per cubic meter of shotcrete mix. The content of C 3 S in this cement is 62%. The water-cement ratio of the concrete mixture is 0.4. Also contains a particle size