BBC-251 BRIDGES polymer modified asphalt waterproof coating

I. Introduction: ???? "Edith" brand BBC-251 BRIDGES polymer modified bitumen coating is asphalt-based material, use a variety of high quality polymer composite modifier, complex scientific formula made of new green waterproof coating. The coating has excellent heat resistance, adhesion and shear performance, while having good affinity asphalt products, to fully meet the special requirements of asphalt concrete deck waterproof, durable and reliable waterproof performance, is all kinds of bridges and special surface coating waterproof construction of the viaduct. Second, the technical indicators: ????? products according to performance is divided into Ⅰ and type Ⅱ. Product performance in Table 1 and Table 2, Table 1 Product general performance, Table 2 for the product application performance. Product implementation of JC / T 975-2005 standard. ????? Table 1 Product General Performance No. Item Specification Ⅰ Ⅱ 1 ??? outer appearance of brown or dark brown liquid, gel-free after stirring, caking, homogeneously state 2 solid content,% ??? ????????????????? ≥ 45 50 3 Dry time, h ???????????????????? ≥ 4 4 hard work Time, h ???????????????????? ≥ 8 5 heat resistance, ℃ 140 160 6 low temperature flexibility, ℃ -15 -25 7 Tensile strength, MPa? ?????????????????? ≥ 0.50 1.00 8 Elongation,% ??????????????????? ≥ 800 9 not permeable 0.3MPa, 30min impervious coating 10 and concrete bond strength, MPa ??? ≥ 0.40 0.60 11 salt treatments tensile strength retention,% ????? ≥ 80 Elongation,% ???? ????? ≥ 800 low temperature flexibility, ℃ -10 -20 increase in mass,% ??????????? ≤ 2.0 12 thermal aging tensile strength retention,% ????? ≥ 80 Elongation,% ????????? ≥ 600 low temperature flexibility, ℃ -10 -20 heating expansion rate,% ????????? ≤ 1.0 mass loss,% ????? ?????? ≤ 1.0? Table 2 Product Application Performance No. Item Index Ⅰ Ⅱ 1 50 ℃ shear strength (1) / MPa ???????? ≥ 0.15 0.20 2 50 ℃ adhesion strength (1 ) / MPa ???????? ≥ 0.05 3 hot rolling after impermeability 0.1MPa, 30min impervious 4 joint deformation capacity of 10,000 cycles without damage Note: (1) both parties need to be used according to other temperature . Third, the product features: ????? ◆ water-based products, non-toxic and harmful volatile substances, does not pollute the environment. ????? ◆ good heat resistance, high temperature of 160 ℃ ~ 180 ℃. ????? ◆ elastic, good extensibility, requirements to withstand deformation under dynamic loading conditions. ????? ◆ High bond strength, shear resistance, can effectively transmit traffic horizontal loads. ????? ◆ liquid cold construction, waterproof layer without seams. Fourth, the scope:? Widely used in various types of bridge deck waterproofing. Fifth, the waterproofing system: ???? ◆ waterproof coating layer structure: a coating film and the carcass reinforcing material waterproof coating waterproof construction and a separate two configurations. Specific construction according to design requirements. Recommended ????? waterproof layer having a thickness of not less than 1.2mm and not more than 1.5mm. Specific thickness according to actual engineering design requirements. Six: Construction Technology: ????? ◆ grass surface treatment: The base must be solid solid, smooth surface, dry and free from sand, laitance and obvious water damage. Yang angle wipe in a circular arc. Defective grass available BPE-203 Epoxy primary treatment agent for processing. Construction before the film completely remove debris, dust, oil. ????? ◆ waterproof coating layer construction: to use brush, roller or spraying, brushing should be layered over points, it should be 3 to 4 times to complete. Again and again to the front after curing film and perpendicular to the direction of the previous pass. Usually interval of 4 h ~ 7h (depending on the temperature may be). 1.0mm thickness of the coating, the coating of the total amount (2.2 ~ 2.6) kg / m2. VII Construction Notes: ????? ◆ Before final setting of concrete bridge decks, concrete surface regularly, and better treatment effect even nap. Waterproof layer construction can be carried out when ????? ◆ bridge deck concrete strength of at least 70% of the design strength. ????? ◆ bridge expansion joints, anti-wall joints, deck drains and other water, according to a separate bridge structures waterproof design process. ????? ◆ construction temperature is preferably 5 ℃ ~ 35 ℃. Temperature less than 5 ℃, rain (including expected within six hours after construction of rain) not construction. ????? ◆ waterproof layer is not completely dry, the Master shall walk and moving vehicles, to prevent sharp objects pierced waterproof layer. Eight, packaging, transportation and storage: ????? ◆ product packaged in a clean, dry sealable plastic bucket or iron drum lined with plastic bags, 50kg / barrel, 200kg / barrel three. ????? ◆ product is non-flammable materials, according to general cargo transport. When transporting, antifreeze, prevent rain, sunlight, extrusion, collision, maintain packaging intact. ????? ◆ ensure product should be stored in ventilated, dry, to prevent direct sunlight, storage temperature not than 0 ℃. Storage for one year.