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Construction process and method for erosion-resistant protective layer of concrete foundation in salty soil zone

A technology for concrete foundation and construction technology, which is applied in basic structure engineering, protection devices, buildings, etc., can solve problems such as high engineering cost, difficult construction, and complicated process, achieve simple process, prevent backflow problems, and ensure stable performance. Effect

Active Publication Date: 2017-01-11
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP +1
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  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a construction method and technology for the anti-corrosion protection layer of the concrete foundation of the underground structure in the saline soil area in view of the deficiencies in the above-mentioned prior art. The technical construction of erosion is difficult, the process is complicated, the project cost is high, and the adaptability is narrow

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  • Construction process and method for erosion-resistant protective layer of concrete foundation in salty soil zone
  • Construction process and method for erosion-resistant protective layer of concrete foundation in salty soil zone
  • Construction process and method for erosion-resistant protective layer of concrete foundation in salty soil zone

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[0095] see Figure 1 to Figure 7 Shown, be specifically that the saline soil area concrete foundation anti-erosion protective layer construction method and technology proposed by the present invention are applied in the saline soil area pouring pile concrete foundation anti-erosion protective layer construction, specifically:

[0096] First, prepare wall retaining mud according to the groundwater environment in the construction area:

[0097] In order to ensure the stability and durability of the retaining mud in the brine environment and reduce the preparation cost of the retaining mud, the brine in the construction area is specially selected to prepare the mixing water for the retaining mud; the retaining mud in the brine environment should at least include bentonite, Adhesive CMC (sodium carboxymethyl cellulose) and other basic components of wall protection mud, and additives can also be selected specifically, such as dispersant FCI (iron chromium lignosulfonate), PHP (poly...

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Abstract

The invention provides a construction process and method for an erosion-resistant protective layer of a concrete foundation in a salty soil zone. The construction process comprises the following steps of: carrying out mud wall-protecting treatment before pouring a concrete foundation of an underground structure to form a layer of mud cakes; then, after completing concrete foundation pouring for certain time, pressing erosion-resistant slurry into the periphery of the concrete foundation, wherein the erosion-resistant slurry sufficiently reacts with underground brine and mud, and is solidified to form a stable, compact and uniform protective layer, and the thickness of the protective layer is a bit greater than that of the mud cakes, so that erosion, on the concrete foundation, of the underground brine can be effectively blocked. According to the process and the method provided by the invention, measures are clear, operability is strong, project cost is low, and the concrete erosion-resistant protective layer can be quickly and accurately formed, so that effective protection is formed on the concrete foundation of the underground structure in the salty soil zone.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of concrete foundation construction technology, and in particular relates to a construction technology and construction method of an anti-corrosion protection layer of a concrete foundation in a saline soil area. [0003] 【Background technique】 [0004] With the rapid development of my country's economy, the development and utilization of underground space in my country has entered a stage of rapid development, and a large number of underground structures need to be constructed. In my country, saline soil is widely distributed in a concentrated distribution form, mainly in the coastal and northwest inland areas. The coastal saline soil of underground structures is mainly chlorine salt saline soil with a salt content of no more than 10% formed by brine soaking into the soil layer, and engineering diseases are mainly caused by the erosive damage of chloride salt; The salinity rate changes greatly, mai...

Claims

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Application Information

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IPC IPC(8): E02D31/06
CPCE02D31/06
Inventor 岳迎九杨少军姚兴刘超姚迪明
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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