Resin rubber modified asphalt, PCCP flexible joint coating method, and application
A technology of resin rubber and modified asphalt, applied in the field of pipeline patching, can solve the problems of low elongation, it is difficult to ensure the cracking of PCCP pipelines, etc., and achieve the effects of good low temperature resistance, poor ability to relieve external environment, and strong elasticity
Active Publication Date: 2021-08-20
河北维立方科技有限公司
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- Description
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Problems solved by technology
Since cement mortar is a rigid joint material, and the outer surface is protected by a low-extensibility anti-corrosion coating, it is difficult to ensure that the PCCP pipeline is subjected to complex factors (such as settlement, etc.) and the angle of the joint is changed. cracking phenomenon
Method used
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Embodiment 1
[0060] This embodiment provides a resin rubber modified asphalt, including 100 parts by weight of No. 30 petroleum asphalt, 3.5 parts of SBS modifier, 0.3 parts of stabilizing curing agent, 1 part of epoxy resin and 2 parts of extender .
Embodiment 2
[0062] This embodiment provides a resin rubber modified asphalt, including 100 parts by weight of No. 30 petroleum asphalt, 3 parts of SBS modifier, 0.4 parts of stabilizing curing agent, 0.8 parts of epoxy resin and 1.5 parts of extender .
Embodiment 3
[0064] This embodiment provides a resin rubber modified asphalt, which includes 100 parts by weight of No. 30 petroleum asphalt, 4 parts of SBS modifier, 0.2 part of stabilizing curing agent and 1.5 parts of epoxy resin.
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The invention provides a resin rubber modified asphalt, a PCCP flexible joint coating method and application, and relates to the technical field of pipeline joint coating. The resin rubber modified asphalt comprises, by weight, 100 parts of asphalt, 3-4 parts of an SBS modifier, 0.2-0.4 part of a stable curing agent and 0.8-1.5 parts of epoxy resin. The PCCP flexible joint coating method comprises the step that the joint coating position of a PCCP is subjected to joint coating through the resin rubber modified asphalt. The problem that a rigid joint coating is poor in external environment adapting capacity can be effectively solved, and it is guaranteed that the joint coating position of the PCCP is not cracked under the change of complex factors.
Description
technical field [0001] The invention relates to the technical field of pipeline jointing, in particular to a method for flexible jointing of resin rubber modified asphalt and PCCP pipelines and an application thereof. Background technique [0002] Prestressed Concrete Cylinder Pipe (PCCP for short) is made by winding a hoop prestressed steel wire on a high-strength concrete tube core with a steel cylinder, and then spraying a dense cement mortar protective layer on it. of water pipes. PCCP has the advantages of high strength, high impermeability, high sealing, good durability, precise interface size and low pipeline maintenance costs. PCCP is widely used in long-distance water transmission main lines, pressure inverted siphons, urban water supply projects, industrial pressurized water transmission pipelines, power plant circulating water engineering sewer pipes, and pressure sewage main pipes. [0003] Coating refers to the technical operation of coating the pipe connectio...
Claims
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IPC IPC(8): C08L95/00C08L53/02C08L63/00F16L58/12F16L55/168
CPCC08L95/00F16L58/12F16L55/168C08L2205/03C08L2203/18C08L2201/08C08L53/02C08L63/00Y02A20/20
Inventor 毕士君李磊毕士恩王广川马征王宏志孙晓伟王庆利
Owner 河北维立方科技有限公司
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