Rubber aggregate special-type concrete for airfield pavement in high and cold area of plateau

A rubber aggregate, technology in alpine regions, applied in the field of building materials, can solve the problems that ordinary concrete is difficult to meet the use requirements, frequent pavement diseases, and difficult to repair, and achieves outstanding technical advantages, economic benefits, and outstanding wear resistance. and fatigue resistance, overall cost reduction effect

Inactive Publication Date: 2019-05-21
中国人民解放军95538部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concrete designed according to the requirements of this standard generally has a compressive strength grade of C30. It is difficult for ordinary concrete of this grade to meet the requirements of the coupling and superimposition of dynamic impact loads and harsh environments. This is the current airport cement concrete pavement The main reason for the frequent and complex diseases and the difficulty in repairing

Method used

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  • Rubber aggregate special-type concrete for airfield pavement in high and cold area of plateau
  • Rubber aggregate special-type concrete for airfield pavement in high and cold area of plateau
  • Rubber aggregate special-type concrete for airfield pavement in high and cold area of plateau

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Effect test

Embodiment 1

[0023] This embodiment provides a kind of rubber aggregate special concrete for airport pavement in plateau alpine region, and its raw material ratio and specific parameters are: cement 405kg / m 3 , Mineral auxiliary material 50kg / m 3 , fine aggregate 680kg / m 3 , coarse aggregate 1210kg / m 3 , rubber aggregate 110kg / m 3 , active magnesium oxide 10.2kg / m 3 , water reducer 8.7kg / m 3 , water 163kg / m 3 .

[0024] Specifically, the cement is Portland cement with a strength grade of 52.5;

[0025] The mineral auxiliary material is Class I fly ash;

[0026] The fine aggregate is machine-made sand, the fineness modulus of machine-made sand is 2.0-3.1, and the content of machine-made sand and stone powder is not more than 8%;

[0027] Coarse aggregate is crushed stone with a particle size range of 5mm to 37.5mm, wherein the coarse aggregate includes large stones and small stones, the particle size of large stones is 20mm to 37.5mm, and the mass percentage of large stones to the a...

Embodiment 2

[0031] This embodiment provides a kind of rubber aggregate special concrete for airport pavement in plateau alpine region, and its raw material ratio and specific parameters are: cement 380kg / m 3 , Mineral auxiliary material 80kg / m 3 , fine aggregate 650kg / m 3 , coarse aggregate 1210kg / m 3 , rubber aggregate 100kg / m 3 , active magnesium oxide 13kg / m 3 , water reducer 7.8kg / m 3 , water 185kg / m 3 .

[0032] Specifically, the cement is Portland cement with a strength grade of 42.5;

[0033] Mineral auxiliary material is slag;

[0034] The fine aggregate is river sand, the fineness modulus of the river sand is 2.0-3.1, and the mud content of the river sand is not more than 2%;

[0035] Coarse aggregate is crushed stone with a particle size range of 5mm to 37.5mm, wherein the coarse aggregate includes large stones and small stones, the particle size of large stones is 20mm to 37.5mm, and the mass percentage of large stones to the amount of coarse aggregate is 40% to 60%. ,...

Embodiment 3

[0039] This embodiment provides a kind of rubber aggregate special concrete for airport pavement in plateau alpine region, and its raw material ratio and specific parameters are: cement 320kg / m 3 , Mineral auxiliary materials 142kg / m 3 , fine aggregate 650kg / m 3 , coarse aggregate 1210kg / m 3 , rubber aggregate 80kg / m 3 , active magnesium oxide 14kg / m 3 , superplasticizer 10.5kg / m 3 , water 152kg / m 3 .

[0040] Specifically, the cement is Portland cement with a strength grade of 42.5;

[0041] Mineral auxiliary material is a mixture of silica fume and fly ash, of which silica fume is 42kg / m 3 , fly ash 100kg / m 3 ;

[0042] The fine aggregate is a mixture of natural sand and machine-made sand, of which the fineness modulus of the mixed sand is 2.8, and the mud content of natural sand is not higher than 2%, and the content of machine-made sand and stone powder is not more than 8%;

[0043] Coarse aggregate is crushed stone with a particle size range of 5mm to 37.5mm, wh...

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Abstract

The invention belongs to the technical field of building materials and discloses a rubber aggregate special-type concrete for an airfield pavement in a high and cold area of the plateau. The concreteis prepared from, by weight, 30-48 parts of cement, 4-18 parts of a mineral ingredient, 60-85 parts of fine aggregate, 100-130 parts of coarse aggregate, 3-14 parts of rubber aggregate, 0.3-1.5 partsof active magnesium oxide, 0.5-1.5 parts of a water reducing agent and 12-20 parts of water. Compared with existing common concrete for the airfield pavement, the rubber aggregate special-type concrete for the airfield pavement in the high and cold area of the plateau has the advantages of being high in impact resistance, contraction resistance and deformability, excellent in durability and the like, the safety and comfort of the airfield pavement can be obviously improved, the service life is greatly prolonged, the comprehensive cost such as later maintenance is obviously lowered, and the concrete has prominent technological advantages and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to special rubber aggregate concrete for airport pavement in plateau alpine regions. Background technique [0002] Airport pavement, including runways, taxiways, and aprons, undertakes important tasks such as aircraft takeoff and landing, taxiing, and parking, and is an important infrastructure for the air transport function of the airport to be brought into play. Compared with asphalt pavement, cement concrete pavement has high strength, good stability and durability, so my country's cement concrete airport pavement accounts for more than 90% of the total. According to the design requirements of airport pavement, the design service life of cement concrete pavement is generally 20 to 30 years. This kind of disease will accelerate the damage and seriously affect the normal operation of the airport. Studies have shown that cracks and broken plates (longitudina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/27C04B111/76
Inventor 李建举杨婵聪刘来宝徐驰赵航张礼华唐兵
Owner 中国人民解放军95538部队
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