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Asphalt pavement structure of airport runway and construction method of asphalt pavement structure
An airport runway asphalt pavement structure comprises a fiber gravel sealing layer, an AC-20 modified asphalt concrete layer, a modified emulsified asphalt bonding layer and an SMA-13 modified asphalt concrete layer which are sequentially arranged on the surface of an old asphalt milling layer from bottom to top. The SMA-13 modified asphalt concrete is prepared from the following components in parts by weight: 22-25 parts of coarse aggregate, 65-68 parts of fine aggregate, 6-7 parts of asphalt and 10-12 parts of mineral powder II, wherein the mineral powder II comprises fly ash, limestone powder, petalite powder and soluble lithium salt powder. The fiber gravel sealing layer at the bottom can effectively prevent roadbed cracks from being reflected to the upper surface layer and can limit aggregate sliding and falling off; the SMA-13 modified asphalt concrete on the surface layer can reduce the thermal expansion performance at high temperature, and meanwhile, the bonding strength among binding materials in the asphalt concrete can be improved, low-temperature shrinkage cracks of the pavement are inhibited, and the water stability is improved.
一种机场跑道沥青路面结构，包括由下至上依次设置在旧沥青铣刨层表面上的纤维碎石封层、AC‑20改性沥青混凝土层、改性乳化沥青粘层以及SMA‑13改性沥青混凝土层，SMA‑13改性沥青混凝土由以下组分按重量份数组成：粗集料22‑25份、细集料65‑68份、沥青6‑7份以及矿粉二10‑12份，所述矿粉二包括粉煤灰、石灰石粉、透锂长石粉末及可溶性锂盐粉末。本发明底部的纤维碎石封层，可有效阻止路基裂缝反射到上面层，还可限制集料滑移与脱落；表层的SMA‑13改性沥青混凝土，可降低高温下的热膨胀性能，同时，还可提高沥青混凝土中各结合料之间的粘结强度，抑制路面的低温收缩裂缝，提高水稳定性。
Asphalt pavement structure of airport runway and construction method of asphalt pavement structure
An airport runway asphalt pavement structure comprises a fiber gravel sealing layer, an AC-20 modified asphalt concrete layer, a modified emulsified asphalt bonding layer and an SMA-13 modified asphalt concrete layer which are sequentially arranged on the surface of an old asphalt milling layer from bottom to top. The SMA-13 modified asphalt concrete is prepared from the following components in parts by weight: 22-25 parts of coarse aggregate, 65-68 parts of fine aggregate, 6-7 parts of asphalt and 10-12 parts of mineral powder II, wherein the mineral powder II comprises fly ash, limestone powder, petalite powder and soluble lithium salt powder. The fiber gravel sealing layer at the bottom can effectively prevent roadbed cracks from being reflected to the upper surface layer and can limit aggregate sliding and falling off; the SMA-13 modified asphalt concrete on the surface layer can reduce the thermal expansion performance at high temperature, and meanwhile, the bonding strength among binding materials in the asphalt concrete can be improved, low-temperature shrinkage cracks of the pavement are inhibited, and the water stability is improved.
一种机场跑道沥青路面结构，包括由下至上依次设置在旧沥青铣刨层表面上的纤维碎石封层、AC‑20改性沥青混凝土层、改性乳化沥青粘层以及SMA‑13改性沥青混凝土层，SMA‑13改性沥青混凝土由以下组分按重量份数组成：粗集料22‑25份、细集料65‑68份、沥青6‑7份以及矿粉二10‑12份，所述矿粉二包括粉煤灰、石灰石粉、透锂长石粉末及可溶性锂盐粉末。本发明底部的纤维碎石封层，可有效阻止路基裂缝反射到上面层，还可限制集料滑移与脱落；表层的SMA‑13改性沥青混凝土，可降低高温下的热膨胀性能，同时，还可提高沥青混凝土中各结合料之间的粘结强度，抑制路面的低温收缩裂缝，提高水稳定性。
Asphalt pavement structure of airport runway and construction method of asphalt pavement structure
一种机场跑道沥青路面结构及其施工方法
HU CONGQIN (author) / DING PAN (author)
2022-03-22
Patent
Electronic Resource
Chinese
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