Thứ Ba, 20 tháng 1, 2015

Lession 6: Construction of plastic concrete layer

-After the installation is complete, the class is the consent of the owner and supervising contractors conducting construction of sprayed concrete layer of plastic. Before laying asphalt concrete layer must be clean, dry and flat surface Foundation layer, transverse gradient processing for true to the design requirements.
-Before laying asphalt concrete layer, to irrigate a sticky plastic cling, or fast analysis of emulsion 1-1, 5 kg/m2 or medium analysis, the irrigated stick sticking must perform before laying asphalt concrete layer from 3 -5 hours.
-In the case of plastic cannot be used liquid and emulsion resin can be cooked to a temperature and watering well.
-Ever streak, scattered in a segment of construction of a class are staggered from each other in order to ensure the same cross-section of the sockets of the structural layer must not overlap, causing sinking, broken locally.
-The Sockets along a stretch of road in the heart of construction is completed in July aims to smooth road surface pros, make sure the stick is good between the old and the new are scattered trails dotted across the trails, avoid condensation of water in the vertical joints.
-When executing each trail are scattered in a class must have formwork & must use automatic level checked regularly.
-In the course of construction must have a size 3 m check regularly the flat rate to additional timely the pavement missing, uneven.
-All cases when the execution of the work of the projects are to note the work safe for passing vehicles &, avoiding traffic jams. Must have the guidance and coordination of traffic.
-When the temperature 25 degree C: in sheltered places the contractor will execute each streak sprayed L = 150 m - 200 m; in airy places each streak sprayed L = 80 m -100 m.
-On sprayed concrete contractors will complete construction of the entire width of the road, not to happen the phenomenon have sockets along to the next day.
-Only plastic concrete construction in those days no rain, dry nails, air temperature not below 5 degree C

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