[] Bridge expansion joints bridge expansion joints installed [] formulated rapid hardening concrete. Selection rapid hardening cement formulation sulphoaluminate 525 40 rapid-hardening concrete. The amount of cement not less than 400 kg / m3, gravel maximum particle size 20 mm, sand sand. Blending ratio of: cement: sand: gravel = 1:1.55:3.3-Run Companies Products D160 expansion joints, use water-cement ratio 0.50. [Face joints bridge expansion joints] process. In addition to cutting the joints when the original pavement, exposed bottom surface (the top surface of the plate and transverse bulkheads) uneven. For the in-situ concrete slab smooth contact with the bottom, to prevent disorder occurs when the temperature of the concrete damage caused by stretching, concrete should be chiseled in the cleaned, rinse the bottom surface, and then 12.5 # fast hard mortar disappearing, to form a smooth surface to facilitate its free expansion. [] Pouring concrete bridge expansion joints. Construction, according to the design of concrete mix design is selected. When pouring the concrete, the chiseled site cleaned, covered with a layer of plastic sheeting, linoleum floor joints D160, 1.5cm thick on both sides and high 8 ~ 10cm wooden joints do reserve. First covered with a layer of approx. 3 cm thick concrete. After the vibration, then into making good steel mesh, then filling concrete, were vibrated smooth and nap. Surface smooth concrete slab above the original bridge deck after 1 ~ 2 mm. It should be noted that: pouring concrete faster, complete mixing within 30 min, pouring, all the processes vibration, smooth and nap; vibration to dense, with a plate vibrator vibrators and from 3 to 4 times Modular bridge expansion joints D160 price, at the edge of a man to fully vibrated; conservation should be timely, pouring forming after 40 min, so water conservation, and covers wet sack. Expansion joint filler. Be pouring concrete through 4min later, we can put aside the wooden slats joints out, after the completion of health, with sawdust mixed with asphalt to fill in the joints, tamping can. [Bridge expansion joints] concrete curing concrete pouring is complete, timely geotextile covering health, during the health of not less than seven days. After the concrete strength more than 50% of the design strength, install the rubber seal, it must serve as a template of foam board seam prior to installation, fiberboard, plasma leakage dig a clean concrete lumps after all, embedded in the rubber strip. [Bridge expansion joints] Construction Notes 1) Notify the construction site technician before joints Guangrun D160 joints cash on delivery, post-mortem to be technicians before construction site supervision consent. 2) slotted slit completed clean up debris inside seam, ensure clean seam to be constructed. 3) Install] [bridge expansion joints embedded parts before checking whether the specification is complete, broken, bent embedded part of the adjustment of the CIA before construction of embedded parts of the padded missing. 4) The gap width and stretching between the ends of the upper structure of the disposal of equipment and installation of a predetermined width are installed with proper temperature, and in accordance with the provisions of the drawings. Expansion joints installed in the fixture control joints manufacturer, to install a temperature in the range of 10 ± 5 ℃. When the expansion joint installation temperature differs with the drawings, according to the comprehensive calculation span, continuous deck length, the installation temperature, etc., and the procedures to be adjusted after the confirmation of the installation parameters. 5)] [bridge expansion joints with high-quality welding electrodes one by one. First welding welding a top surface, and then welded side, and finally welding the bottom surface, and in a timely manner to the hierarchical welding welding slag removal, after the welding portable grinder polished top surface. Weld length not less than specifications.