A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for constructing medium-grained asphalt concrete upper surface layer in gobi rocky desert area
The invention relates to the technical field of civil engineering, in particular to a method for constructing a medium-grained asphalt concrete upper surface layer in gobi rocky desert area, aims to solve the problem that the structure of a road structure is changed and damaged when the road structure faces extremely high temperature grilling or extremely low temperature freezing, and is technically characterized by comprising the following steps: S1, heating matrix asphalt to 165-170 DEG C, heating graded mineral aggregate to 190-200 DEG C, and mixing the matrix asphalt and the graded mineralaggregate for 50-55 seconds to obtain modified asphalt; wherein the grain size ratio of the graded mineral aggregate in the asphalt concrete upper surface layer is 0-3mm: 11-18mm: 6-11mm: 3-6mm: mineral powder=35%:34%:20%:7%:4%; S2, cleaning a lower bearing layer; S3, paving an asphalt concrete upper surface layer; S4, rolling the upper surface layer of the asphalt concrete; S5, carrying out joint treatment; and S6, naturally cooling to below 50 DEG C, then starting the traffic, and adopting a watering cooling mode if the traffic needs to be opened in advance. According to the method, construction of the modified asphalt concrete upper surface layer is achieved, the constructed asphalt pavement surface layer is good in performance and long in service life, meanwhile, construction is convenient, and good economic benefits and environmental protection benefits are achieved.
本申请涉及土木工程技术领域，具体涉及一种戈壁石漠区中粒式沥青混凝土上面层施工方法，旨在解决道路结构面对极端高温的炙烤或极端低温的冷冻，其结构会发生改变、破坏的问题，其技术要点在于包括以下步骤：S1、将基质沥青加热到165‑170℃，将级配矿料加热到190‑200℃，两者拌和50‑55s得到改性沥青；其中，沥青混凝土上面层中级配矿料的粒径比例为0‑3mm:11‑18mm:6‑11mm:3‑6mm：矿粉＝35％:34％:20％:7％:4％；S2、下承层清理；S3、摊铺沥青混凝土上面层；S4、碾压沥青混凝土上面层；S5、接缝处理；S6、自然降温至50℃以下再开放交通，如需提前通车，采用洒水降温方式。本方案实现了改性沥青混凝土上面层施工，施工出的沥青路面面层性能好，使用寿命长，同时施工方便，具有较好的经济效益和环保效益。
Method for constructing medium-grained asphalt concrete upper surface layer in gobi rocky desert area
The invention relates to the technical field of civil engineering, in particular to a method for constructing a medium-grained asphalt concrete upper surface layer in gobi rocky desert area, aims to solve the problem that the structure of a road structure is changed and damaged when the road structure faces extremely high temperature grilling or extremely low temperature freezing, and is technically characterized by comprising the following steps: S1, heating matrix asphalt to 165-170 DEG C, heating graded mineral aggregate to 190-200 DEG C, and mixing the matrix asphalt and the graded mineralaggregate for 50-55 seconds to obtain modified asphalt; wherein the grain size ratio of the graded mineral aggregate in the asphalt concrete upper surface layer is 0-3mm: 11-18mm: 6-11mm: 3-6mm: mineral powder=35%:34%:20%:7%:4%; S2, cleaning a lower bearing layer; S3, paving an asphalt concrete upper surface layer; S4, rolling the upper surface layer of the asphalt concrete; S5, carrying out joint treatment; and S6, naturally cooling to below 50 DEG C, then starting the traffic, and adopting a watering cooling mode if the traffic needs to be opened in advance. According to the method, construction of the modified asphalt concrete upper surface layer is achieved, the constructed asphalt pavement surface layer is good in performance and long in service life, meanwhile, construction is convenient, and good economic benefits and environmental protection benefits are achieved.
本申请涉及土木工程技术领域，具体涉及一种戈壁石漠区中粒式沥青混凝土上面层施工方法，旨在解决道路结构面对极端高温的炙烤或极端低温的冷冻，其结构会发生改变、破坏的问题，其技术要点在于包括以下步骤：S1、将基质沥青加热到165‑170℃，将级配矿料加热到190‑200℃，两者拌和50‑55s得到改性沥青；其中，沥青混凝土上面层中级配矿料的粒径比例为0‑3mm:11‑18mm:6‑11mm:3‑6mm：矿粉＝35％:34％:20％:7％:4％；S2、下承层清理；S3、摊铺沥青混凝土上面层；S4、碾压沥青混凝土上面层；S5、接缝处理；S6、自然降温至50℃以下再开放交通，如需提前通车，采用洒水降温方式。本方案实现了改性沥青混凝土上面层施工，施工出的沥青路面面层性能好，使用寿命长，同时施工方便，具有较好的经济效益和环保效益。
Method for constructing medium-grained asphalt concrete upper surface layer in gobi rocky desert area
一种戈壁石漠区中粒式沥青混凝土上面层施工方法
XIAN ZHENGHONG (author) / WEI XIAOLUE (author) / MA QIANG (author) / JIANG YIFAN (author) / HUANG HAIQING (author)
2021-01-08
Patent
Electronic Resource
Chinese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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