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Concrete Construction Method in Low Temperature Season in Alpine Region

A technology for alpine regions and construction methods, which is applied in the direction of on-site coagulation pavement, roads, and road repairs, etc., can solve problems such as increased construction costs, complicated construction methods, and extended construction periods, and can increase installation stability and avoid low temperature. Environmental work and the effect of improving construction efficiency

Inactive Publication Date: 2020-08-14
四川启创建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of construction method is complicated and is suitable for the construction of large-scale projects. It is too complicated for some small-scale constructions to use this method, which will seriously prolong the construction period and increase construction costs.

Method used

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  • Concrete Construction Method in Low Temperature Season in Alpine Region
  • Concrete Construction Method in Low Temperature Season in Alpine Region
  • Concrete Construction Method in Low Temperature Season in Alpine Region

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056]A kind of concrete construction method in low temperature season in alpine region, it comprises the following steps,

[0057] Formwork support: the formwork 1 with a built-in heating structure specially designed by the present invention is used for formwork support, and the formwork 1 is fixed by a fixing device so that the formwork 1 is connected end to end to form a warehouse for pouring concrete.

[0058] The template used is 1 such as figure 1 shown. The inside of the template 1 is a hollow structure, and the inner cavity of the template 1 is arranged in parallel with three heating pipes 2 along the length of the template 1 . The cavity of the formwork is filled with thermal insulation material 12, and the thermal insulation material 12 can be asbestos fiber or rock wool fiber, and asbestos fiber is selected in this embodiment. Both ends of the heating tube 2 are provided with guide tubes 3 along the width direction of the template 1 , and the ends of the heating t...

Embodiment 2-5

[0082] A kind of concrete construction method in low temperature season in alpine region, its difference with embodiment 1 is: the consumption of each component of mixing concrete is different, specifically as shown in the table below,

[0083] Table 1. Concrete each component content table (by weight) in embodiment 2-5

[0084] components Example 2 Example 3 Example 4 Example 5 Portland cement 380 390 410 420 aggregate 1500 1600 1800 1900 fly ash 90 95 105 110 antifreeze 1.0 1.2 1.4 1.5 early strength agent 1.0 1.1 1.5 1.3 air entraining agent 0.05 0.06 0.08 0.09 Superplasticizer 5 6 8 9 water 185 190 200 210

[0085] Among them, the high-efficiency water-reducing agent is selected from the commercially available polycarboxylate-based water-reducing agent; the antifreeze agent is made of sodium nitrite and potassium carbonate in a mass ratio of 1:1; the early strength agent is made of...

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Abstract

The invention discloses an alpine region low-temperature season concrete construction method, and belongs to the technical field of concrete construction. The problem that in the prior art, a construction method is excessively complex and not suitable for large-scale concrete construction is solved. According to the technical scheme, the method is characterized by comprising the steps of erectinga formwork, installing a communicating pipe, pouring concrete, performing maintenance and the like; according to the step of erecting the formwork, a formwork of a specially-designed built-in heatingdevice is adopted; according to a preferential scheme, the concrete for pouring is prepared from, by weight, 380-420 parts of Portland cement, 1,500-1,900 parts of aggregate, 90-110 parts of coal ash,1-1.5 parts of anti-freezing agent, 1-1.5 parts of early strength agent, 0.05-0.09 part of air entraining agent, 5-9 parts of high efficiency slushing agent and 185-210 parts of water; the adopted aggregate is subjected to organic silicon emulsion spraying and baking treatment. The construction method has the advantages of being simple in working procedure, suitable for small-scale construction,controllable in cost and capable of effectively reducing freeze thawing damage.

Description

technical field [0001] The invention belongs to the technical field of concrete construction, and more specifically relates to a concrete construction method in low-temperature seasons in alpine regions. Background technique [0002] The quality of concrete is an important part of the quality of construction projects. The durability of concrete is an important determinant of the life of concrete engineering structures. The concrete surface affected by freeze-thaw damage will expand and shrink, disintegrate, weather and erode. After a long time, the overall concrete structure may be seriously damaged. Some projects cannot operate normally because the concrete structure is damaged by freezing and thawing. [0003] The Chinese patent with application publication number CN101319494A in the prior art discloses a concrete construction method in cold seasons in high-cold regions, which includes selection of raw materials, concrete proportioning design, concrete storage space, hea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/02E04G21/24E01C7/14E01C23/03C04B20/10C04B28/04
CPCC04B20/1051C04B28/04E01C7/14E01C23/03E04G21/02E04G21/246C04B14/00C04B18/08C04B2103/601C04B2103/12C04B2103/304C04B2103/302C04B22/002
Inventor 陈波
Owner 四川启创建设工程有限公司