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在嫩江至黑河公路嫩江段2.8kml旧路拓宽改造水泥混凝土路面施工中,加强对路基、路面各种技术指标及施工工艺的控制取得了良好效果,该段路设计抗折强度4.5mpa,宽9.0(4.5×2)面板厚20cm。91年当年竣工,92年回访至今,路面质量完好,因此在混凝土路面施工中加强质量控制是非常重要的。一、混凝土路面基层施工质量控制 1、基层压实度。应选择合适的压路机碾压工艺,并掌握碾压时机,在混合料含水量等于或略大于最佳含水量时,立即碾压。按照先边后中平曲线由内至外,先轻后重,先慢后快的原则,直至碾压到规定的压实度为止。同时,水泥稳定类材料从掺入水泥,加水拌和到碾压完毕,应在三
In the Nenjiang River to Nenjiang River section of the Nenjiang River 2.8kml old road to broaden and transform the cement concrete pavement construction, to strengthen the subgrade and pavement various technical indicators and control of the construction process has achieved good results, the section design flexural strength 4.5mpa, width 9.0 (4.5 × 2) Panel thickness 20cm. Completed in 1991, 92 years back so far, the quality of the road surface intact, so in the construction of concrete pavement to strengthen quality control is very important. First, the construction of concrete pavement quality control 1, the compaction level. Should choose a suitable Roller Rolling process, and grasping the timing of rolling, mixing water content is equal to or slightly greater than the optimal moisture content, immediately crushed. In accordance with the first after the mid-level curve from the inside to the outside, the first light heavy, slow first after the principle of fast, until the compaction of rolling up to date. At the same time, cement stabilized materials from the incorporation of cement, add water to the mixing is completed, should be in three