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Bonding material for steel surfaces and asphalt concrete

A technology of asphalt concrete and bonding materials, which is applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problems of stripping of steel and road surfaces, limited service life, and undurable bridge decks, etc. Achieve excellent shock resistance and crack resistance, uniform distribution of stress load, and comprehensive waterproof function

Active Publication Date: 2016-11-16
辽宁瑞德公路科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steel box girders are generally welded by light steel plates, and the surface is relatively smooth. It is difficult for ordinary bonding materials to adapt to this working condition. The bonding force of asphalt beyond the softening point is almost zero. Peeling occurs between the material and the steel, and the repeated stress of thermal expansion and contraction can also easily cause the peeling of the steel and the road surface
[0004] Traditional asphalt concrete is difficult to solve the problems caused by steel structure bridge decks. For example, double-layer SMA bridge deck pavement structure is used, high-viscosity asphalt is used, and rock asphalt with high softening point is used for pouring construction. The disadvantages are: The cost is high, and the bridge deck is not durable, prone to cracks on the road surface, and even water leakage on the road surface, which directly corrodes the steel body
[0005] CN1305990C discloses a steel bridge deck pavement interface adhesive, the adhesive has adopted a conventional steel surface commonly used formula, amide curing agent, CYD-128 type epoxy resin, and more polysulfide rubber Toughening agent, but due to the large amount of polysulfide rubber added, the modulus of the material is reduced. Under the action of continuous dynamic load, the service life is limited, and the product configuration is relatively complicated, and the smell is foul
[0006] CN 101407387B discloses a second-order reaction type waterproof bonding material, which is toughened by polysulfide rubber, which has poor operation convenience and economical efficiency, low adhesion index, and excessive elasticity does not exist in the actual use environment. significance
CN101665341B discloses a kind of epoxy asphalt used for steel bridge deck pavement, which is more convenient to operate and has a certain adhesive force, but the effect after epoxy modification is still not ideal, thus affecting the adhesive force and impact resistance of the material and resistance to damage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The ratio of component A is as follows:

[0032] Active environmental thinner 2.5kg;

[0033] Epoxy resin (E51) 80kg;

[0034] Activation diluent 7kg;

[0035] Dipropylene glycol methyl ether 3kg;

[0036] Toughener 10kg;

[0037] Rock asphalt 10kg;

[0038] The ratio of component B is as follows:

[0039] Active environmental protection thinner 5kg;

[0040] 651 10kg;

[0041] Modified amine curing agent 40kg;

[0042] DMP-30 1kg;

[0043] Silane coupling agent Si-69 1.5kg;

[0044] Magnesium oxide 5kg;

[0045] The active and environmentally friendly thinner used in component A and component B is a mixture of methacrylate and cyclohexanone in a mass ratio of 1:1.

[0046] Mix component A and component B uniformly according to the mass ratio of 2:1 to obtain the adhesive material.

[0047] The active environment-friendly thinner is a mixture of methacrylate and cyclohexanone in a mass ratio of 1:1.

[0048] The bonding material is cured and cured at 80°C f...

Embodiment 2

[0051] The ratio of component A is as follows:

[0052] Active environmental thinner 2.5kg;

[0053] E51 type epoxy resin 90kg;

[0054] Active diluent 501 5kg;

[0055] Dipropylene glycol methyl ether 5kg;

[0056] Epoxy resin toughening agent 8kg;

[0057] Rock asphalt 12kg;

[0058] The ratio of component B is as follows:

[0059] Active environmental protection thinner 4kg;

[0060] Polyamide curing agent 651 12kg;

[0061] Modified amine curing agent 35kg;

[0062] DMP-30 Accelerator 1.2kg;

[0063] Silane coupling agent Si-69 1.2kg;

[0064] Magnesium oxide 6kg;

[0065] The active and environmentally friendly thinner used in component A and component B is a mixture of methacrylate and cyclohexanone in a mass ratio of 1:1;

[0066] Mix component A and component B uniformly according to the mass ratio of 2:1 to obtain the adhesive material.

[0067] The bonding material was cured and cured at 80°C for 8 hours, and the tensile strength of the material reached 7...

Embodiment 3

[0070] The ratio of component A is as follows:

[0071] Active environmental thinner 3kg;

[0072] E51 type epoxy resin 75kg;

[0073] Active diluent 501 8kg;

[0074] Dipropylene glycol methyl ether 2kg;

[0075] Epoxy resin toughening agent 12kg;

[0076] Rock asphalt 8kg;

[0077] The ratio of component B is as follows:

[0078] Active environmental thinner 6kg;

[0079] Polyamide curing agent 651 8kg;

[0080] Modified amine curing agent 50kg;

[0081] DMP-30 Accelerator 0.8kg;

[0082] Silane coupling agent Si-69 1.8kg;

[0083] Magnesium oxide 4kg;

[0084] The active and environmentally friendly thinner used in components A and B is a mixture of methacrylate and cyclohexanone in a mass ratio of 1:1; the epoxy resin toughener used is epoxy resin toughener ZJ460.

[0085] Mix component A and component B uniformly according to the mass ratio of 2:1 to obtain the adhesive material.

[0086] The bonding material is cured at 80°C for 8 hours, and the tensile strengt...

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Abstract

A bonding material applied to a steel surface and bituminous concrete comprises a component A and a component B at the ratio of 2 to 1, wherein the component A comprises the following ingredients in parts by weight: 2.5-3 parts of an active environment-friendly thinner, 75-90 parts of epoxy resin E51, 5-8 parts of a reactive diluent 501, 2-5 parts of dipropylene glycol and 8-12 parts of an epoxy resin flexibilizer; the component B comprises the following ingredients in parts by weight: 4-6 parts of an active environment-friendly thinner, 8-12 parts of a polyamide curing agent 651, 35-50 parts of a modified amine hardener, 0.8-1.2 parts of an accelerant MP-30, 1.2-1.8 parts of a silane coupling agent Si-69 and 4-6 parts of magnesium oxide. The bonding material has the advantages of being convenient in construction, high in bonding strength, high in impact resistance and high in damage resistance and has the effects of being high in tensile strength, shearing resistance, heat resistance, water resistance and rust resistance.

Description

technical field [0001] The invention belongs to the field of engineering material bonding, in particular to a bonding material used for steel surfaces and asphalt concrete. Background technique [0002] With the advancement of domestic transportation engineering technology, more and more steel bridges and steel infrastructures have been built one after another, and the bridge deck with asphalt concrete structure paved with steel surface has attracted more and more attention from engineers and technicians. [0003] The deformation of long-span steel bridges is large under the action of temperature and load. Steel box girders have good temperature conductivity and are easily affected by changes in external temperature; Various vibrations propagate continuously. Steel box girders are generally welded by light steel plates, and the surface is relatively smooth. It is difficult for ordinary bonding materials to adapt to this working condition. The bonding force of asphalt beyond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/06C09J4/02C09J11/08C09J11/06C09J11/04
Inventor 刘京澎李兆顺张海军张跃东
Owner 辽宁瑞德公路科技有限公司
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