道路检查井周病害快速修复技术及配合比研究

发布时间：2018-06-11 14:19

本文选题：道路检查井 + 超早强混凝土　；参考：《施工技术》2014年S2期

【摘要】：超早强混凝土由于其早期强度高的优异性能,在公路、桥面的维修加固中有着广泛的应用。采用硫铝酸盐水泥、钢纤维、0.32~0.45的水灰比、聚羧酸减水剂以及膨胀剂,配制出4h之后的强度20MPa、抗劈裂性能好,用于道路检查井周边病害修复的超早强复合混凝土。试验结果及现场施工反馈表明,修复后的道路检查井周范围路面早期强度高、路面沉降小、耐久性高。
[Abstract]:Ultra-early strength concrete is widely used in the maintenance and reinforcement of highway and bridge deck due to its high early strength and excellent performance. Using sulphoaluminate cement, water-cement ratio of steel fiber 0.32 ~ 0.45, polycarboxylic acid water reducer and expansion agent, the strength of 20MPa after 4 hours is prepared, which has good splitting resistance and is used to repair the disease around the road inspection well. The experimental results and site construction feedback show that the early strength of pavement is high, the pavement settlement is small, and the durability is high.
【作者单位】：青岛市市政工程管理处;青岛市市政工程设计研究院有限公司;
【基金】：青岛市建设事业科技发展项目:城市道路车行道检查井周病害快速处置技术(JK2012-04)
【分类号】：U418.7

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