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Method for preparing antiskid wearable lightweight steel box girder bridge floor paving layer

A bridge deck pavement, lightweight steel technology, applied in the field of building materials, can solve the problems of epoxy asphalt concrete pavement slip resistance, unsatisfactory noise reduction effect, narrow temperature range for mixing and construction, and high requirements for raw materials and equipment. The effect of improving road performance, good anti-deformation performance and improving anti-skid performance

Active Publication Date: 2008-08-06
WUHAN MUNICIPAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The domestic trend of paving in recent years is to use epoxy asphalt to pave steel bridge decks. Although this method has been applied on a few bridges in China, it has not yet been tested by various climatic conditions, and this paving method is expensive. Very high, high requirements for raw materials and equipment, all of which need to be imported from abroad, and the mixing construction temperature range is narrow (paving temperature range is 120 ° C ~ 145 ° C), which is very easy to cause waste
Anti-slip and noise-reducing effects of epoxy asphalt concrete pavement are unsatisfactory

Method used

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  • Method for preparing antiskid wearable lightweight steel box girder bridge floor paving layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of anti-skid, wear-resistant lightweight steel box girder bridge deck pavement comprises the following steps:

[0034] Raw material preparation:

[0035] Light aggregate: particle size 5-16cm, apparent density 1200-1500kg / m 3 , Bulk density 700~1100kg / m 3 , Clay ceramsite with cylinder compressive strength ≥ 6.5Mpa.

[0036] The cement is 42.5# ordinary Portland cement.

[0037] The fine aggregate is river sand with a fineness modulus of 2.6-2.8.

[0038] The fly ash is Class II fly ash, and the water requirement is ≤105% (mass).

[0039] Polycarboxylate superplasticizer (such as: PC100 polycarboxylate superplasticizer produced by Wuhan Haoyuan Chemical Building Materials Co., Ltd.), the water reducing rate is 20-40%.

[0040] The organic imitation steel wire fiber in step 1) is: 0.5mm in diameter, 30-50mm in length, and breaking strength>410MPa.

[0041] The water-soluble polymer described in step 1) is: a modified polyacrylic polymer emuls...

Embodiment 2

[0065] The preparation method of anti-skid, wear-resistant lightweight steel box girder bridge deck pavement comprises the following steps:

[0066] Raw material preparation:

[0067] Light aggregate: particle size 5-16cm, apparent density 1200-1500kg / m 3 , Bulk density 700~1100kg / m 3 , crushed shale ceramsite with cylinder compressive strength ≥ 6.5Mpa.

[0068] The cement is 42.5# ordinary Portland cement.

[0069] The fine aggregate is river sand with a fineness modulus of 2.6-2.8.

[0070] The fly ash is Class II fly ash, and the water requirement is ≤105% (mass).

[0071] Polycarboxylate superplasticizer (such as: PC100 polycarboxylate superplasticizer produced by Wuhan Haoyuan Chemical Building Materials Co., Ltd.), the water reducing rate is 20-40%.

[0072] The organic imitation steel wire fiber is: 1.0mm in diameter, 30-50mm in length, and breaking strength > 410MPa.

[0073] The water-soluble polymer is: a modified polyacrylic polymer emulsion (such as Shandong...

Embodiment 3

[0097] The preparation method of anti-skid, wear-resistant lightweight steel box girder bridge deck pavement comprises the following steps:

[0098] Raw material preparation:

[0099] Light aggregate: particle size 5-16cm, apparent density 1200-1500kg / m 3 , Bulk density 700~1100kg / m 3 , Fly ash ceramsite with cylinder compressive strength ≥ 6.5Mpa.

[0100] The cement is 52.5# ordinary Portland cement.

[0101] The fine aggregate is river sand with a fineness modulus of 2.6-2.8.

[0102] The fly ash is Class II fly ash, and the water requirement is ≤105% (mass).

[0103] Polycarboxylate superplasticizer (such as: PC100 polycarboxylate superplasticizer produced by Wuhan Haoyuan Chemical Building Materials Co., Ltd.), the water reducing rate is 20-40%.

[0104] The organic imitation steel wire fiber is: 0.5-1.0mm in diameter, 30-50mm in length, and breaking strength > 410MPa.

[0105] The water-soluble polymer is: a modified polyacrylic polymer emulsion (such as Shandong T...

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Abstract

The invention relates to an anti-sliding, wear-resistant and light steel box girder bridge deck pavement and a preparation method thereof, which is characterized in that the method includes the following steps: 1) preparation of high toughness and high strength lightweight aggregate concrete and cement paste on a basalt bare stone surface layer: a. the high toughness and high strength lightweight aggregate concrete is prepared; b. the cement paste on the basalt bare stone surface layer is prepared; 2) pretreatment of the steel box girder bridge deck; 3) welding of shear key: the shear key is welded on the steel box girder bridge deck one by one according to mutual spacing of the shear keys with (30-60)cm plus (30-60)cm; the shear key is stud; 4) lashing of mesh reinforcement; 5) paving of the high toughness and high strength lightweight aggregate concrete layer: thickness of the high toughness and high strength lightweight aggregate concrete layer is 50-80cm; 6) paving of the surface layer of the basalt bare stone; then maintenance is carried out. The bridge deck pavement prepared by the method can effectively prevent disease occurrence of the steel box girder, prolong service life of the bright deck and simultaneously has the functions of anti-sliding, wear-resistant and noise reduction and has good pavement performance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of a skid-resistant and wear-resistant lightweight steel box girder bridge deck pavement. Background technique [0002] Steel box girder bridges have significant advantages such as light weight, economy, and convenient erection. They are especially suitable for long-span bridges and are widely used at home and abroad. With the rapid development of my country's transportation industry, more and more long-span bridges are being built, and the pavement of long-span steel box girder decks has always been a technical difficulty and research hotspot in bridge construction. Asphalt concrete is generally used for deck pavement of box girder bridges. The high temperature resistance of asphalt concrete on the bridge deck is generally poor, and the steel structure is a good conductor of heat. In summer, the surface temperature of the steel plate i...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/08C04B14/48
CPCY02W30/91
Inventor 丁庆军胡曙光谢先启林青邓立明王小磊黄修林黄绍龙田焜吕林女何永佳王发洲张勇
Owner WUHAN MUNICIPAL CONSTR GROUP
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