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A platform for research: civil engineering, architecture and urbanism
Construction method of large-particle-size cement regenerated base pavement structure
The invention relates to a construction method of a large-particle-size cement regenerated base pavement structure. The problems that an existing pavement has the defect of reflection cracks and is low in heavy load resistance, and a flexible base layer is prone to net cracks and sinking are solved. According to the technical scheme, the building material comprises a main aggregate, a filling material and a caulking material. The method comprises the following steps: paving a main aggregate, rolling the main aggregate, paving a filling material, uniformly mixing the filling material and the main aggregate, conducting rolling, spreading a caulking material, and conducting rolling and preserving for 7 days. The rebound modulus is about 1200 MPa, the main aggregate is large-particle-size broken stone, the nominal particle size of the main aggregate is 53-73 mm or 37.5-63 mm, the filling material and the caulking material adopt an on-site cement cold recycled asphalt surface layer milling material, the cement cold recycled asphalt surface layer milling material is formed by mixing an old road asphalt pavement structure layer milling material, cement and water in regeneration equipment, the maximum particle size of the cement cold recycled asphalt surface layer milling material is smaller than 16 mm, the continuous grading curve requirement is met, the cement dosage range is 5-12%, and the 7d unconfined compressive strength representative value is not lower than 3 Mpa.
本发明涉及一种大粒径水泥再生基层路面结构的施工方法。为了解决现有路面存在的反射裂缝的缺陷，抗重载性能低，柔性基层易产生网裂、下沉的问题。本发明的技术方案为包括主骨料、填充料和嵌缝料；先摊铺主骨料，对主骨料碾压后再摊铺填充料，将填充料与主骨料拌合均匀进行碾压，再洒布嵌缝料，碾压养生7天，回弹模量在1200MPa左右，主骨料为大粒径碎石，其公称粒径为53~73mm或37.5~63mm，填充料和嵌缝料采用现场水泥冷再生沥青面层铣刨统料，水泥冷再生沥青面层铣刨统料，是由旧路沥青路面结构层铣刨料与水泥、水在再生设备内拌合形成的，水泥冷再生沥青面层铣刨统料，最大粒径小于16mm，满足连续级配曲线要求，水泥剂量范围为5~12%，7d无侧限抗压强度代表值不低于3Mpa。
Construction method of large-particle-size cement regenerated base pavement structure
The invention relates to a construction method of a large-particle-size cement regenerated base pavement structure. The problems that an existing pavement has the defect of reflection cracks and is low in heavy load resistance, and a flexible base layer is prone to net cracks and sinking are solved. According to the technical scheme, the building material comprises a main aggregate, a filling material and a caulking material. The method comprises the following steps: paving a main aggregate, rolling the main aggregate, paving a filling material, uniformly mixing the filling material and the main aggregate, conducting rolling, spreading a caulking material, and conducting rolling and preserving for 7 days. The rebound modulus is about 1200 MPa, the main aggregate is large-particle-size broken stone, the nominal particle size of the main aggregate is 53-73 mm or 37.5-63 mm, the filling material and the caulking material adopt an on-site cement cold recycled asphalt surface layer milling material, the cement cold recycled asphalt surface layer milling material is formed by mixing an old road asphalt pavement structure layer milling material, cement and water in regeneration equipment, the maximum particle size of the cement cold recycled asphalt surface layer milling material is smaller than 16 mm, the continuous grading curve requirement is met, the cement dosage range is 5-12%, and the 7d unconfined compressive strength representative value is not lower than 3 Mpa.
本发明涉及一种大粒径水泥再生基层路面结构的施工方法。为了解决现有路面存在的反射裂缝的缺陷，抗重载性能低，柔性基层易产生网裂、下沉的问题。本发明的技术方案为包括主骨料、填充料和嵌缝料；先摊铺主骨料，对主骨料碾压后再摊铺填充料，将填充料与主骨料拌合均匀进行碾压，再洒布嵌缝料，碾压养生7天，回弹模量在1200MPa左右，主骨料为大粒径碎石，其公称粒径为53~73mm或37.5~63mm，填充料和嵌缝料采用现场水泥冷再生沥青面层铣刨统料，水泥冷再生沥青面层铣刨统料，是由旧路沥青路面结构层铣刨料与水泥、水在再生设备内拌合形成的，水泥冷再生沥青面层铣刨统料，最大粒径小于16mm，满足连续级配曲线要求，水泥剂量范围为5~12%，7d无侧限抗压强度代表值不低于3Mpa。
Construction method of large-particle-size cement regenerated base pavement structure
一种大粒径水泥再生基层路面结构的施工方法
WU CHAOFAN (author) / LI HUI'AN (author) / CHEN YANQIN (author)
2022-02-11
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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