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我公司承建的东台三仓轧花厂尘塔车间为二层框架结构,二层楼面至平屋顶框架柱在拆模时,发现有5根柱子上部因浇筑混凝土时漏振造成空洞,其位置和尺寸如图1所示。为确定补强方案,我们进行了如下试验: 用砂、石、水泥加矾土水泥和二水石膏做原混凝土标号的三组微膨胀混凝土试验,考虑混凝土的最终收缩值(约0.2～0.95‰),我们将微膨胀混凝土膨胀组分控制在1～
The Dongtai Sancang ginning plant dust tower workshop built by our company is a two-story frame structure. When the two-story floor-to-flat roof frame column is demolished, it is found that there are five columns in the upper part of the column due to the leakage of the concrete when it is poured. And dimensions are shown in Figure 1. In order to determine the reinforcement scheme, we conducted the following tests: Three groups of slightly-expanded concrete tests using sand, stone, cement plus bauxite cement and dihydrate gypsum as the original concrete marking, taking into account the final shrinkage of the concrete (approximately 0.2 to 0.95 inch). ), we control the expansion component of the slightly-expanded concrete at 1 to