峡口水库沥青混凝土面板的施工与试验

Construction and Test of Asphalt Concrete Slab Used in Xiakou Reservoir Dam

以灌溉、防洪为主的峡口水库大坝 ,为沥青混凝土面板堆石坝 ,为研究低温抗裂性能 ,对沥青混凝土面板破损取样 ,进行了配比和多种力学性能试验 ,并与原面板设计指标进行了对比。由于面板经受住了 -2 0℃以下的低温考验 ,其所用沥青指标、破损取样试验结果 ,特别是冻断低温指标 。

The Xiakou reservoir dam, mainly used for irrigation and flood control, was a rockfill dam built of asphalt concrete slabs. In order to study the crack resistance at low temperature, damaged asphalt concrete slab samples were taken to do the test of proportioning and multi mechanical properties. Then a contrast between test results and the original design value was made. As the slab could withstand the trial below 20℃, the asphalt index and damaged testing results, especially the frost fracture temperature were very valuable for determining the standard of crack resistance test at low temperature of hydraulic asphalt concrete.