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Macropore macadam epoxy grouting repair structure for epoxy asphalt steel bridge deck

A technology of epoxy asphalt and epoxy grouting, which is applied in bridge maintenance, epoxy resin glue, application, etc., can solve the problem of water tightness at the joints of old and new pavements in waterproof performance, and the durability of new pavement is difficult to meet the domestic use requirements. Unable to meet the requirements of use, the general effect and other problems, to achieve the effect of rapid opening of traffic, simple structure, and increased service life

Inactive Publication Date: 2021-01-26
江苏广宇协同科技发展研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two maintenance technologies are difficult to meet the domestic use requirements in terms of waterproof performance, water tightness at the joints of old and new pavement, and durability of new pavement. The effect of pit maintenance is average. Afterwards, secondary damage occurs
In the past, the maintenance of pits and grooves on steel bridge deck pavement was performed temporarily. When the appropriate time node is reached, it is troublesome to carry out large and medium repairs on the diseased locations uniformly, and cannot meet people's use requirements. For this reason, we propose a A large-porosity gravel epoxy grouting repair structure for epoxy asphalt steel bridge deck

Method used

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  • Macropore macadam epoxy grouting repair structure for epoxy asphalt steel bridge deck
  • Macropore macadam epoxy grouting repair structure for epoxy asphalt steel bridge deck
  • Macropore macadam epoxy grouting repair structure for epoxy asphalt steel bridge deck

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Effect test

Embodiment 1

[0024] An epoxy asphalt steel bridge deck with macroporous gravel epoxy grout repair structure, such as figure 1 As shown, it includes a waterproof adhesive layer 1, an asphalt normal temperature large-pore gravel layer 2 and an epoxy resin permeable layer 3. The waterproof adhesive layer 1 is arranged on the inner surface of the pit on the steel bridge deck, and the asphalt normal temperature large-pore 2 is arranged inside the pit on the steel bridge deck, and the epoxy resin permeable layer 3 is evenly coated on the upper end surface of the asphalt normal temperature large-pore gravel layer 2, so that part of the uppermost gravel surface of the large-pore gravel layer is exposed.

[0025] The amount of waterproof adhesive layer 1 is 0.6-0.8kg / ㎡, and the waterproof adhesive layer 1 is a mixture of epoxy resin, curing agent and accelerator. The mass ratio of epoxy resin, curing agent and accelerator is 1-1.5: 0.1-0.5: 0.001.

[0026] The epoxy resin adopts bisphenol A epoxy ...

Embodiment 2

[0043] Take normal temperature liquid asphalt (70# road petroleum asphalt, 0# diesel oil and interface agent LF-2, the ratio is 7:2:1), and a certain grade of gravel, and mix them at room temperature according to the ratio of asphalt to asphalt 5:100, and mix well Finally, high-performance asphalt and large-pore gravel are formed at room temperature. Packing in bags for later use, this step is prefabricated in advance.

[0044]Take epoxy resin, curing agent and accelerator (E-51 bisphenol A epoxy resin, 651 low molecular weight polyamide and DMP-30), mix and stir according to 1:0.3:0.001, after stirring evenly, spread it on the pit For the bottom of the tank and the four walls of the pit, the dosage is controlled at 0.6-0.8kg / ㎡ to form a waterproof adhesive layer 1 .

[0045] Then, pave high-performance asphalt room temperature large-pore gravel on the waterproof adhesive layer 1, compact and level it with manual compaction or small vibratory plate compaction, after compactio...

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Abstract

The invention discloses a macropore macadam epoxy grouting repair structure for an epoxy asphalt steel bridge deck, which comprises a waterproof bonding layer, an asphalt normal-temperature macroporemacadam layer and an epoxy resin permeable layer, and the waterproof bonding layer is arranged on the inner surface of a pit slot in a steel bridge deck; and the asphalt normal-temperature macropore macadam layer is arranged in the pit slot on the steel bridge deck. The macropore macadam epoxy grouting repair structure for the epoxy asphalt steel bridge deck can effectively prevent rainwater fromcorroding a steel plate, can be tightly connected with new and old joints to form a whole, and effectively prevents secondary damage caused by rainwater infiltration; the paving strength can be improved, the field construction time is greatly reduced, the traffic is rapidly opened, and the influence on traffic is reduced; in addition, the overall strength of the high-performance normal-temperaturemacroporous gravel layer can be improved, damage of rainwater to the pavement layer and the steel plate is effectively prevented, the influence of factors such as ultraviolet rays on pavement is prevented, and the service life of the pavement layer is prolonged.

Description

technical field [0001] The invention relates to the field of bridge deck construction, in particular to a large-pore gravel epoxy grouting repair structure for epoxy asphalt steel bridge decks. Background technique [0002] Epoxy asphalt steel bridge deck pavement technology is one of the mainstream technologies for steel bridge decks at home and abroad. At present, the domestic completed area exceeds 2 million square meters, and about 50% of epoxy asphalt pavement has begun to enter the maintenance period. Epoxy asphalt is a thermosetting material, and its maintenance technology is a worldwide problem. At present, the rapid repair technology of epoxy asphalt steel bridge deck pavement is basically blank, and high-performance rapid maintenance materials and technologies are seriously lacking. It is of great practical significance to carry out research and development of epoxy asphalt steel bridge deck pavement maintenance materials and technologies. [0003] The typical dis...

Claims

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Application Information

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IPC IPC(8): E01C7/18E01D19/08E01D22/00C09J163/02C04B26/26C04B38/00E01D101/40C04B111/40
CPCC04B26/26C04B2111/00284C04B2111/0075C04B2111/40C04B2201/10C04B2201/50C09J163/00E01C7/187E01D19/083E01D22/00E01D2101/40C04B14/14C04B38/0041
Inventor 朱雷刘昌财张伟梁超童宽陈刚
Owner 江苏广宇协同科技发展研究院有限公司
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