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High strength crack resistant concrete and preparation method, composition and application thereof

A crack-resistant and concrete technology, applied in the field of high-strength crack-resistant concrete and its preparation, can solve the problems of cracking of the pavement layer, overall deformation, safety hazards, etc. Effect

Active Publication Date: 2015-08-12
BEIJING ZHONGKE JIAGU BUILDING MATERIAL SCI &TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the local and overall deformation and large temperature difference of long-span orthogonal special-shaped slab steel bridges, under the action of heavy traffic loads, most of the steel bridge deck pavements will appear cracking, wrapping, slipping soon after the completion of the pavement. Migration and other diseases, there are extremely serious safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] The preparation process of the invention is simple.

[0052] The present invention further provides a high-strength crack-resistant concrete, which is prepared according to the above-mentioned method.

[0053] The high-strength crack-resistant concrete of the invention has the advantages of strong bearing capacity and short service life.

[0054] The present invention also provides an application of the above-mentioned high-strength crack-resistant concrete, including the construction and maintenance and reinforcement of the following projects:

[0055] 11) Highway, railway, urban road, bridge and tunnel engineering;

[0056] 12) Civil and military airport engineering;

[0057] 13) Industrial and civil building engineering;

[0058] 14) Bridge deck pavement structure engineering;

[0059] 15) Ship and port engineering.

Embodiment 1

[0062] A density of 1.8t / m 3 The high-strength crack-resistant concrete consists of the following components and proportions:

[0063] The high-strength crack-resistant concrete uses component A, component B, component C and component D with a mass ratio of 1:0.8:4:15 as raw materials. Wherein, the A component is isocyanate, and the B component includes polyethylene adipate diol 45%, polyoxypropylene diol 43%, polyvinyl alcohol 10%, lauric acid type organotin Catalyst 0.1%, phosphate ester flame retardant (brand is Melabo-102A) 0.2%, cyclopentane foaming agent 1.7%, described C component comprises cement 60%, fly ash 20%, ore powder 20%, The D component includes 30% of quartz sand and 70% of gravel.

[0064] The percentages in the present invention all refer to weight percentages.

[0065] A preparation process of high-strength crack-resistant concrete, the specific steps are as follows;

[0066] 1), take the above-mentioned components according to the amount for subsequent ...

Embodiment 2

[0078] A density of 2.0t / m 3 The high-strength crack-resistant concrete consists of the following components and proportions:

[0079] The high-strength crack-resistant concrete uses component A, component B, component C and component D with a mass ratio of 1:1:4.5:18 as raw materials. Wherein, the A component is isocyanate, and the B component includes 15% polyethylene adipate diol, 45% polyethylene glycol ether, 38% polyvinyl alcohol, lauric acid Type organotin catalyst 0.4%, phosphate ester flame retardant (brand is Melabo-102B) 0.1%, cyclopentane foaming agent 1.5%, described C component includes cement 60%, fly ash 20%, ore powder 20%, the D component includes 30% of quartz sand and 70% of gravel.

[0080] A preparation process of high-strength crack-resistant concrete, the specific steps are as follows;

[0081] 1), take the above-mentioned components according to the amount for subsequent use;

[0082] 2) Pour the weighed components of component B into the container...

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Abstract

The invention discloses high strength crack resistant concrete and a preparation method, a composition and application thereof, the composition includes a component A, a component B, a component C and a component D, the component A is isocyanate, the component B includes polyester polyol, polyether polyol, polyvinyl alcohol, a lauric acid type organic tin catalyst and a cyclopentane foaming agent; the component C includes cement, fly ash and mineral powder, and the component D includes quartz sand and gravel. The invention also provides a method for preparing the high strength crack resistant concrete from the composition used for the high strength crack resistant concrete. The invention further provides the application of the high strength crack resistant concrete, including application in the engineering construction and maintenance and reinforcement. The high strength crack resistant concrete has the characteristics of high strength, strong steel bridge surface adhesion steel bridge, rich toughness, corrosion resistance, water resistance, permeability resistance, frost resistance, impact resistance, aging resistance, simple construction, short construction period and suitable construction costs.

Description

technical field [0001] The invention relates to the field of mortar preparation, in particular to a high-strength crack-resistant concrete and its preparation method, composition and application. Background technique [0002] With the increase of heavy traffic volume and the improvement of vehicle load level, roads, railways and urban road bridges used under cruel natural conditions generally have reinforced concrete cracks, steel corrosion, concrete falling off and other diseases, and there are extremely serious traffic safety hazards . [0003] At present, the steel bridge deck pavement materials at home and abroad mainly include modified asphalt SMA concrete, cast asphalt concrete and epoxy asphalt concrete. However, due to the local and overall deformation and large temperature difference of long-span orthogonal special-shaped slab steel bridges, under the action of heavy traffic loads, most of the steel bridge deck pavements will appear cracking, wrapping, slipping soo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/02C04B24/26
Inventor 刘贵位田甜宋利利
Owner BEIJING ZHONGKE JIAGU BUILDING MATERIAL SCI &TECH CO LTD
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