Concrete pavement thin layer repairing technology rapid repairing materials

Why do you want to repair? Because the highway, urban and rural road of cement concrete pavement; Cement road surface often peeling, sand, and so on concrete surface diseases. Reasons are basically in winter construction, new concrete playing before didn't finish the spray have been frozen under the influence of the temperature, turn the year temperatures rise, due to not fully hydration leads to low intensity at the grass-roots level the surface of the phenomenon of sand. For vehicles will cause potential safety hazard, has lost its adornment effect. Above for the highway damage disease what to repair? Thin layer concrete pavement rapid repair materials is a kind of cement road surface repair materials is a kind of high polymer fast repair mortar, mainly used in concrete structure surface defect repair quickly. With glue at the grass-roots level, and high early strength, good abrasion resistance and pressure resistance, such as concrete bridge repair the better material. What is a thin layer of thin layer repairing material construction repair? With ordinary cement mortar to repair, generally requires a certain thickness, if there is no thickness, strength can not meet the requirements. Even if the repair can insist on how long. At the end of the crack, and most of the pavement concrete diseases are on the surface of the sand, by this time you will need a rigid-flexible economic repair material, need only a thin layer can meet the requirements of construction. Concrete pavement thin layer repairing material is introduced: fast repair material thickness is 1 mm, about material 1 kg per square meter. Water use pollution-free ( Livestock drinking water) 。 It is advisable to construction thickness more than 3 mm. Construction conditions: temperature should be above 5 ℃, rainy days can't construction. Construction personnel must have a certain experience in construction of cement concrete, the construction before you understand the use of this material. Materials mixing water: the material is mixed with water and stir, add water works best when 17%, but according to repair different, on different dilution degree requirements can be adjusted when add water, but water content control in 15% - , between 20%. Mixing: must be fully mix, observe without powder ball and bubbles, if there is still a powder ball and bubble, can rest a minute before mixing, stirring time around 3 minutes advisable, but also shoulds not be too long, to prevent clotting in the mixing barrel. Experience: according to experience, when mixing water first, then charging will be more time, because this material solidification time is shorter, one-time mixing volume shoulds not be too large, according to the operation and construction schedule, each mixing material should be completed construction in 20 minutes. Construction method timing: to repair the surface fully nourishes, surface wet but no MingShui, if there is a water potholes parts, water with sponge or dry cloth blot before construction, if there is water will destroy the material in water affecting strength; If you have appeared on the surface of a dry phenomenon, with rain sprinkled wet again; The dry humidity of operation to maintain appropriate help adhesive and convenient for construction. Repair: 1) For pit slot repair, pits, peeling, empty drum, pour material mixture on the job, with float flat can, will float along side slightly raise into 10 ° Angle with the ground, as far as possible the number of times the material flat, too many times because the board will be glued board phenomenon, if there is difficult to find, at ordinary times is still two to three minutes and then erased. Construction personnel is best in a small area on the preview first, know about the material properties for extensive operation, constantly sum up experience and construction skills. （ 2) In view of the crack repair, if the crack is not less than 3 mm of this material, will need to crack expansion joint processing, make a better repair of the artificial surface, will be conducive to the material of adhesive and reinforcing effect. Experience: a lot of construction personnel accustomed to using cement concrete experience, according to the experience, the material and the construction of cement concrete or is there a difference, but there are also similarities. The difference is not like a concrete to carry on the calender, because this material initial setting time is shorter, initial setting with adhesive, is not conducive to smooth, so as far as possible the number of the material in the form of paving leveling; In this same material also need like concrete vibratory link, the material laying and dense and uniform, so avoid empty and fault during construction, especially with the bottom of the glue, it is best when paving scraping on a thin layer of first, observe the concave and convex point have a good contact with material immediately after paving thickness, if the thickness of the pit slot parts had better avoid big one-off accumulation, with layered fill do dense uniform, but the link is coherent, not middle interval, or it will appear statified phenomenon.