Product Name : SBS, APP modified asphalt membrane 
1.SBS, APP modified asphalt membrane 
SBS modified bitumen membrane is a thermoplastic elastomer modified bitumen membrane in one, it polyester felt or fiberglass mat for the child group, styrene - butadiene - styrene (SBS) thermoplastic elastomer asphalt modifier is made ??of coated cover material, both sides covered with insulating material made ??of waterproof membrane ( referred to as the SBS membrane ) . When it is lower than the glass transition temperature of the polystyrene component of tough elastomeric material , SBS elastomeric membrane having high performance characteristics of high strength , high elongation , high temperature, low temperature resistance , physical mechanical properties are shown in Table 1. modified bitumen membrane to waterproof the basal layer of elongation greater ability to adapt to the deformation in the process of construction of the construction process for each channel coil paving requirements are extremely stringent. Web site acceptance from the start until the roll is completed paving are strictly web site acceptance from the beginning until the roll is completed paving are strict.
 
1.1 For the membrane materials approach requirements.
 
1.1.1 Storage custody : coil should be stacked upright , the height of not more than two , and not tilted or horizontal pressure , short-distance transport flat must not exceed four. Stores , the construction site is strictly prohibited fireworks, avoid sunlight and rain , we must prevent the high temperature heating , storage location and construction site materials must be well ventilated .
 
1.1.2 admission test: After the membrane material required sampling approach to its re-examination , the project may not be used substandard materials , membranes, sampling for the same species, grades and specifications are as follows: greater than 1000 volumes extracted Volume 5 ; 500 volumes to 1,000 volumes extracted four volumes ; 100 to 499 volumes extracted three volumes ; less than 100 volumes extracted two volumes. The coil unwinding carry out sample testing specifications and appearance quality inspection , when all the indicators have reached the standard , that is qualified. Which , if an indicator is mainly the retest samples should be doubled in subjects products, with all the standard requirements for qualified . There are an indicator of failure , failure is determined when the product appearance quality reinspection .
 
1.1.3 The combination of waterproof membrane made ??of two layers made ??of SBS modified bitumen membrane thickness ≥ 3mm +3 mm, waterproof membrane approach must be accompanied by the factory inspection report , certificate and manual, and indicate the date of manufacture , batch number, size, name.
 
1.1.4 its appearance must meet quality requirements , in accordance with the relevant provisions of the SBS modified bitumen membrane quality pass visual inspection only after the determination of the physical properties of censorship , SBS modified bitumen membrane appearance quality requirements in Table 2. table 1SBS resilient modified bitumen membrane physical and mechanical properties of fetal base model number PY Ⅰ Ⅱ G Ⅰ Ⅰ 1 solubles content g / m ≥ 2mm3mm4mm-1300210029002 impermeability pressure MPa ≥ hold time , min ≥ 0.30.20.2303 heat resistance , ℃ 9010590105 no slide , flowing, dripping 4 Rally , N/50mm ≥ vertical and horizontal 4508003505002503005 maximum tensile elongation % ≥ portrait Landscape 3040-6 low temperature flexibility , ℃ -18-25-18-25 no crack 7 tear strength , N ≥ portrait lateral 2503502503501702008 artificial climate accelerated aging appearance retention rate % ≥ longitudinal tensile low temperature flexibility , ℃ a no sliding , flowing, dripping 80-10-20-10-20 crack- modified bitumen membrane sheet 2SBS appearance quality requirements of the project quality requirements fracture appearance , wrinkles, pores , not soaked carcass stripped jagged , exposed uneven tire cover does not allow the base coat was no significant difference not allowed .
 
1.2 Construction preparation . Construction preparation work includes the following items :
 
1.2.1 to clean utensils . High pressure hair dryer, Xiao-Ping shovel, broom .
 
1.2.2 Operation tool. Electric mixer , oil brush, iron , gasoline blowtorch flame gun or a dedicated pressure the child , holding the pressure roll, iron roll , scissors , ruler , 1500mm diameter 30 ( iron, plastic ) , stroke ( put ) line items.
 
1.2.3 carefully examine the drawings before construction , water projects must be constructed by a professional team , the operator certificates.
 
1.2.4 Construction materials are flammable, and should prepare the appropriate fire fighting equipment.
 
2 , the construction process
 
→ brushing the grass-roots cleanup process base oils Stones roll → → → detail additional layer of hot-melt sealing treatment → → protective layer.
 
2.1 pairs of grassroots demands.
 
2.1.1 grass surface , first dust , debris cleaned surface residual mortar blocks protruding portion and a hard knot glue previously cleaned .
 
2.1.2 before laying roofing layer , the substrate surface must be kept clean and dry. Dryness of the test method is a square membrane laid on a flat , dry screed rested after 3 ~ 4h opened checks, such as leveling layer covering the site with no watermark on the web , according to the weather conditions to arrange construction .
 
2.1.3 primary and prominent roof structure ( parapet gables , dormer walls , Deformation , chimneys , etc. ) in the corner of the junction and grass , leveling layer should be made ??of rounded , radius shall comply with the requirements. Mizuochi internal drainage around the mouth , leveling layer should be made of a slightly lower pits.
 
2.1.4 drain , Yang angle and pipe roots are prone to leakage and other parts of the paint should be preceded by a large area of paving roll with vulcanized rubber band or cut into a shape similar coil encapsulation processing .
 
2.1.5 using 1:3 mortar screed layer , a ruler to check with 2M bump deviation of not more than 5mm, to changes gently , free from the slope phenomenon . And leveling layer should set sub-lattice seam , and filling them with sealant . Dividing joint should be left in the end plate joints , not more than 6mm; asphalt mortar screeds , not more than 4mm.
 
Brushing 2.2 grassroots SBS cold base oil . On the dry grass brushing SBS modified bitumen membrane cold base oil, should be consistent with national regulatory requirements . Brushing the grass in front of a large area of ??SBS cold base oil, with a brush to clean nodes , peripherals, and other parts of the negative angle , the first construction SBS cold base oil stir evenly . SBS cold base oil before brushing the grass should be determined by the primary treatment agent speed drying time length and construction schedule , some brushing uniform, a good coating , drying to a non-sticky feet is appropriate. SBS modified bitumen membrane used in construction
5 , the specific approach is: a two-piece sheet lap weld width 50mm effective , blowing hot air heated by the tip at the overlap , requiring welding start flowing from the downhill slope to prevent the coil when laying welding occurs skew phenomenon . When the tip outlet temperature 350-400 ℃ , the waterproofing membrane can reach the edge of kneading state , during welding to weld does not exceed 1% m. Simultaneously with the pressure roller pressure , the two membranes fuse into one. In the welding plane straight line, automatic welding machines, continuous welding ; facade, intermittent arc welding torch cable manual