A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preventing reflection cracks by additionally paving asphalt layer on cement concrete pavement
The invention relates to the technical field of highway engineering, in particular to a method for preventing reflection cracks by additionally paving an asphalt layer on a cement concrete pavement. A small milling machine is adopted to perform transverse milling along the whole seam to form a trapezoidal seam groove, the two ends of the seam groove are designed to be inclined slope surfaces, and when the cement concrete panel expands and extends in summer, the epoxy resin mortar layer can slightly slide along the slope surfaces, so that arch expansion damage to the concrete pavement is avoided; when the temperature is reduced in winter and the concrete pavement shrinks, micro-cracks with the width smaller than 0.8 mm are formed in the epoxy mortar layer or the bottom, so that crack reflection is prevented; the proportion of high-strength and high-toughness epoxy mortar is optimized, after the high-strength epoxy mortar is filled, the width of a transverse shrinkage joint can be reduced to about 0.8 mm, crack reflection can be prevented, meanwhile, the situation that an epoxy mortar layer is fractured or cracks are formed due to shrinkage of a panel or slight sliding along a slope in winter can be effectively avoided, and the service life of the panel is prolonged. The generation of reflection cracks of the asphalt overlay at the original seam is further delayed, and the durability and the stability of the pavement are ensured.
本发明涉及公路工程技术领域，具体涉及一种水泥混凝土路面加铺沥青层防止反射裂缝的方法；采用小型铣刨机沿着整条接缝进行横向铣刨形成梯形的缝槽，缝槽两端设计为斜向坡面，当水泥混凝土面板夏季膨胀伸长时，环氧树脂砂浆层可沿坡面微小滑动，从而避免混凝土路面发生拱胀破坏；冬季温度降低，混凝土路面收缩时在环氧砂浆层或底部形成宽度小于0.8mm的微裂缝，利于防止裂缝反射；优化了高强高韧环氧砂浆的配比,填充高强环氧砂浆后，可将横向缩缝缝宽减小到0.8mm左右，利于防止裂缝反射，同时能有效避免冬季面板收缩或沿坡面微小滑动导致的环氧砂浆层会断裂或形成裂缝等，进一步延缓原接缝处沥青加铺层反射裂缝的产生，保证路面的耐久性和稳定性。
Method for preventing reflection cracks by additionally paving asphalt layer on cement concrete pavement
The invention relates to the technical field of highway engineering, in particular to a method for preventing reflection cracks by additionally paving an asphalt layer on a cement concrete pavement. A small milling machine is adopted to perform transverse milling along the whole seam to form a trapezoidal seam groove, the two ends of the seam groove are designed to be inclined slope surfaces, and when the cement concrete panel expands and extends in summer, the epoxy resin mortar layer can slightly slide along the slope surfaces, so that arch expansion damage to the concrete pavement is avoided; when the temperature is reduced in winter and the concrete pavement shrinks, micro-cracks with the width smaller than 0.8 mm are formed in the epoxy mortar layer or the bottom, so that crack reflection is prevented; the proportion of high-strength and high-toughness epoxy mortar is optimized, after the high-strength epoxy mortar is filled, the width of a transverse shrinkage joint can be reduced to about 0.8 mm, crack reflection can be prevented, meanwhile, the situation that an epoxy mortar layer is fractured or cracks are formed due to shrinkage of a panel or slight sliding along a slope in winter can be effectively avoided, and the service life of the panel is prolonged. The generation of reflection cracks of the asphalt overlay at the original seam is further delayed, and the durability and the stability of the pavement are ensured.
本发明涉及公路工程技术领域，具体涉及一种水泥混凝土路面加铺沥青层防止反射裂缝的方法；采用小型铣刨机沿着整条接缝进行横向铣刨形成梯形的缝槽，缝槽两端设计为斜向坡面，当水泥混凝土面板夏季膨胀伸长时，环氧树脂砂浆层可沿坡面微小滑动，从而避免混凝土路面发生拱胀破坏；冬季温度降低，混凝土路面收缩时在环氧砂浆层或底部形成宽度小于0.8mm的微裂缝，利于防止裂缝反射；优化了高强高韧环氧砂浆的配比,填充高强环氧砂浆后，可将横向缩缝缝宽减小到0.8mm左右，利于防止裂缝反射，同时能有效避免冬季面板收缩或沿坡面微小滑动导致的环氧砂浆层会断裂或形成裂缝等，进一步延缓原接缝处沥青加铺层反射裂缝的产生，保证路面的耐久性和稳定性。
Method for preventing reflection cracks by additionally paving asphalt layer on cement concrete pavement
一种水泥混凝土路面加铺沥青层防止反射裂缝的方法
LIAN XIANGDONG (author) / LIN YOUGUI (author) / LIAO JIANGLIN (author) / YUAN ZUGUANG (author) / NONG BINYI (author) / YI QIANG (author) / NONG HUANG (author) / HUANG GUANGXI (author) / FAN JIEQIANG (author)
2023-11-14
Patent
Electronic Resource
Chinese
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