A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction process for changing cement concrete pavement into asphalt pavement
The invention provides a construction process for changing a cement concrete pavement into an asphalt pavement. The construction process comprises the following steps step 1, milling an original cement concrete pavement and cleaning waste residues; step 2, spreading SBR modified emulsified asphalt on the milled cement concrete surface for multiple times, wherein a spreading amount of starting, stopping and joints is slightly greater than the normal spreading amount during spreading; step 3, mixing a TPS high-viscosity asphalt mixture and paving the mixture on the surface of the SBR modified emulsified asphalt, wherein a paving starting speed is slightly lower than a normal paving speed during paving; and step 4, rolling the paved TPS high-viscosity asphalt mixture, wherein the TPS high-viscosity asphalt mixture starts to be rolled in a high-temperature state and cannot be repeatedly rolled in a low-temperature state. Due to a fact that the TPS high-viscosity asphalt has an excellent viscosity characteristic and an adhesion capacity, the TPS high-viscosity asphalt surface layer is adopted as an additional paving layer of the cement concrete pavement, a defect that the asphalt pavement is prone to cracking is overcome, a pavement bearing capacity is improved, and pavement safety and durability are enhanced.
本发明提供了一种水泥混凝土路面改沥青路面的施工工艺，包括：步骤一、铣刨原水泥混凝土路面并清扫废渣；步骤二、在铣刨后的水泥混凝土表面分多次洒布SBR改性乳化沥青，洒布时起步、终止和接缝的洒布量略大于正常洒布量；步骤三、拌和TPS高粘沥青混合料并摊铺在SBR改性乳化沥青表面，摊铺时起步摊铺速度略小于正常摊铺速度；步骤四、碾压摊铺后的TPS高粘沥青混合料，TPS高粘沥青混合料在高温状态下开始碾压，低温状态下不得反复碾压。由于TPS高粘沥青具有优越的粘度特性和粘附能力，本发明采用TPS高粘沥青面层作为水泥混凝土路面的加铺层，克服沥青路面易开裂的缺陷，提高路面承载能力、增强路面安全性和耐久性。
Construction process for changing cement concrete pavement into asphalt pavement
The invention provides a construction process for changing a cement concrete pavement into an asphalt pavement. The construction process comprises the following steps step 1, milling an original cement concrete pavement and cleaning waste residues; step 2, spreading SBR modified emulsified asphalt on the milled cement concrete surface for multiple times, wherein a spreading amount of starting, stopping and joints is slightly greater than the normal spreading amount during spreading; step 3, mixing a TPS high-viscosity asphalt mixture and paving the mixture on the surface of the SBR modified emulsified asphalt, wherein a paving starting speed is slightly lower than a normal paving speed during paving; and step 4, rolling the paved TPS high-viscosity asphalt mixture, wherein the TPS high-viscosity asphalt mixture starts to be rolled in a high-temperature state and cannot be repeatedly rolled in a low-temperature state. Due to a fact that the TPS high-viscosity asphalt has an excellent viscosity characteristic and an adhesion capacity, the TPS high-viscosity asphalt surface layer is adopted as an additional paving layer of the cement concrete pavement, a defect that the asphalt pavement is prone to cracking is overcome, a pavement bearing capacity is improved, and pavement safety and durability are enhanced.
本发明提供了一种水泥混凝土路面改沥青路面的施工工艺，包括：步骤一、铣刨原水泥混凝土路面并清扫废渣；步骤二、在铣刨后的水泥混凝土表面分多次洒布SBR改性乳化沥青，洒布时起步、终止和接缝的洒布量略大于正常洒布量；步骤三、拌和TPS高粘沥青混合料并摊铺在SBR改性乳化沥青表面，摊铺时起步摊铺速度略小于正常摊铺速度；步骤四、碾压摊铺后的TPS高粘沥青混合料，TPS高粘沥青混合料在高温状态下开始碾压，低温状态下不得反复碾压。由于TPS高粘沥青具有优越的粘度特性和粘附能力，本发明采用TPS高粘沥青面层作为水泥混凝土路面的加铺层，克服沥青路面易开裂的缺陷，提高路面承载能力、增强路面安全性和耐久性。
Construction process for changing cement concrete pavement into asphalt pavement
一种水泥混凝土路面改沥青路面的施工工艺
ZHOU XIONG (author) / ZHANG PEI (author) / YANG WEIPING (author) / TIAN MENG (author) / ZHENG DONG'ER (author)
2020-11-27
Patent
Electronic Resource
Chinese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
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CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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