Road repair construction plan?

The road repair construction plan is very critical. The plan is formulated for better construction, ensuring project quality, and achieving the best expected results. Zhongda Consulting will introduce to you the road repair construction plan.

1. Basis for compilation 1.1 Regarding the visa for XX road maintenance and repair of quality defective roads.

1.2 "Code for Construction and Quality Acceptance of Urban Road Projects" (CJJ1-2008) 2. Project Overview 2.1 Due to damage caused by being crushed by construction vehicles, the following roads need to be repaired, and the repair scope is South Wuli The road runs from National Highway 106 to the first speed bump (including around the roundabout), the damaged road near the original garbage pool on the west side of A3, and the road at the entrance and exit of Wanhua City and the interval community.

2.2 The repair area is about 3100 square meters. 3. Construction arrangements 3.1 The road section being repaired this time is a traffic artery and cannot be cut off. Therefore, the following measures are taken. The road section will be paved in two sections. One section of the road will be paved first. The remaining part of the road will be constructed after the construction is completed and conditions are open to traffic.

4. Construction personnel allocation and main equipment and tools 4.1. Staffing Position Project Manager Technical Leader Technical Personnel Construction Engineer Experimental Personnel Work Scope Overall Coordination Technical Responsible for On-site Quality Control On-site Construction Quality Control Sampling and Testing Number of On-site Construction Numbers 20 Remarks 4.2 Main Equipment and Tools

Serial Number Instrument Equipment name Excavator (breaker) 40T asphalt concrete hot material transport truck Quantity Milling machine Two-wheel steel drum roller Asphalt concrete paver 1~2t walk-behind small vibratory roller.

105. Construction technology and process Emulsified asphalt spreading truck 3m ruler temperature measuring gun 5m tape measure 5.1 Process flow: Removal of surface layer - cleaning (including damaged base layer) - pipe well and curb stone repair - Paving cement-stabilized aggregates - spraying emulsified asphalt binding oil - 70mm thick medium-grained modified asphalt concrete - fast cracking emulsified asphalt sticky layer - 40mm thick fine-grained modified asphalt concrete surface layer 5.2 First, use a milling machine to remove the pavement surface layer For the upper layer (thickness 40mm), after milling, any loose original asphalt particles on the bottom surface should be excavated. If the bottom surface is smooth, it should be roughened. Local low-lying areas should be filled with asphalt mixture and compacted. When milling, road debris should be cleaned while milling

to facilitate the movement and leveling of the milling machine. After milling, the horizontal edges are often not neat. You can use a cutting machine to cut along the edges and then chisel them manually. Sweep away loose aggregate, dust and standing water and allow to dry. The road surface will be cleared after the removal is complete.

5.3 The supervisor, Party A’s representative, construction unit and other parties shall determine the road repair position. The technician shall draw the repair position with chalk, and then use a cutting machine to cut out the edge of the repair area and the depth of the cut. Generally, it should be guaranteed to be about 5cm. The main purpose of trimming is to ensure that the groove walls are vertical and the groove edges are neat. Then use an excavator (breaking hammer) to dig out the old asphalt pavement (excavate to the plain soil layer), then manually clean up the remaining debris in the trench, lay cement-stabilized granules in layers and compact them.

5.4 The surface layer and base layer of the surrounding road surface need to be excavated at the sinking location of the pipe well. If the pipe well is damaged, the pipe well must be repaired in advance. At the same time, replace damaged curbs (including those with a length less than 600mm) and manhole covers, and replace curved curbs with curved curbs.

5.5 Due to deformation of the base or soil foundation, the deformed part of the base or soil foundation should be removed first, filled with cement-stabilized granules and compacted with a 1~2t walk-behind small vibratory roller.

5.6 Spray emulsified asphalt. Use an asphalt spreading truck to spray emulsified asphalt on the entire paving surface and the groove wall interface. The lower layer of asphalt concrete must be inspected and accepted at the base layer, cleaned and sprayed with emulsified asphalt.

5.7 The bottom layer of asphalt concrete in the damaged area is 70mm thick medium-grained modified asphalt concrete (AC-20). Since the repair amount is small, the amount must be measured on site to determine the amount to avoid waste.

5.8 Use an asphalt spreading truck to spray the emulsified asphalt on the entire paving surface and the groove wall interface. The emulsified asphalt should be fast-cracking emulsified sticky layer asphalt (0.5L/m2). , the paving operation can be carried out after the emulsification is broken.

5.9 Paving the upper layer of asphalt concrete 5.9.1 Before paving the mixture, the lower layer must be inspected. Special attention should be paid to the pollution of the lower layer. Those that do not meet the requirements must be dealt with, otherwise they shall not be paved. Asphalt concrete.

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