Acid-corrosion-resistant concrete pipe pile and preparation method thereof

A concrete pipe pile and acid resistance technology, applied in the field of building materials, can solve problems affecting the structural strength and service life of pipe piles, collapse of buildings and bridges, threats to people's lives and properties, etc., so as to improve the resistance to acid corrosion and acid corrosion The effect of improving capacity, improving structural strength and service life

Inactive Publication Date: 2020-08-25
FUJIAN DADI CONCRETE PILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the corrosion is excessive, it will seriously affect the structural strength and service life of the pipe pile, and even cause the collapse of buildings, bridges, etc., causing serious accidents and posing a great threat to people's lives and property
In the industry, there are many studies on chloride ion and sulfate radical corrosion resistance of pipe piles, but less research on acid corrosion resistance; how to improve the acid corrosion resistance of concrete pipe piles is the research needed for the sustainable development of the pipe pile industry

Method used

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  • Acid-corrosion-resistant concrete pipe pile and preparation method thereof
  • Acid-corrosion-resistant concrete pipe pile and preparation method thereof

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preparation example Construction

[0034] The present invention also relates to a method for preparing the above-mentioned acid corrosion-resistant concrete pipe pile, comprising the following steps:

[0035] Step 1. Preparation of concrete: Put quartz sand, cement, super fine powder of stone, 30% water, granite gravel, residual water and water reducing agent into the forced mixer in turn, and stir evenly; then put in potassium silicate and stir evenly, Finally, throw in aluminum tripolyphosphate and stir evenly to make fresh concrete with low slump of 30-50mm;

[0036] Step 2. Place the prepared steel bar skeleton in the centrifugal steel mold and connect it with the prestressed steel bar anchor plate, tension plate, and tension rod;

[0037] Step 3. Fill the lower half of the mold evenly with the prepared fresh concrete along the centrifugal steel mold, and spread more concrete at both ends;

[0038] Step 4. Lift the upper mold half above the lower mold half, and fix the upper and lower mold halves with bolt...

Embodiment 1

[0047] Components in parts by weight: 300 parts of cement, 140 parts of fine powder of stone, 1120 parts of granite crushed stone, 720 parts of quartz sand, 130 parts of water, 12 parts of water reducing agent, 30 parts of potassium silicate, 4.5 parts of aluminum tripolyphosphate share.

[0048] The cement is P·II 42.5R cement.

[0049] The ultrafine powder of the SiO 2 Content 92.1%, specific surface area 550m 2 / kg.

[0050] The crushed stones are granite crushed stones with a continuous gradation of 5-20mm, a crushing value of 6.5%, and a mud content of 0.2%.

[0051] The sand is quartz sand, wherein SiO 2 The content is 92.7%, the fineness modulus is 2.7, and the mud content is 0.4%.

[0052] The water reducer is selected from high-efficiency water reducer.

[0053] Described potassium silicate selects modulus 2.9 potassium silicate for use.

Embodiment 2

[0055]Components in parts by weight: 330 parts of cement, 160 parts of super fine powder of stone, 1100 parts of granite crushed stone, 690 parts of quartz sand, 135 parts of water, 14 parts of water reducing agent, 35 parts of potassium silicate, 5.5 parts of aluminum tripolyphosphate share.

[0056] The cement is P·II 42.5R cement.

[0057] The ultrafine powder of the SiO 2 Content 92.1%, specific surface area 550m 2 / kg.

[0058] The crushed stones are granite crushed stones with a continuous gradation of 5-20mm, a crushing value of 6.5%, and a mud content of 0.2%.

[0059] The sand is quartz sand, wherein SiO 2 The content is 92.7%, the fineness modulus is 2.7, and the mud content is 0.4%.

[0060] The water reducer is selected from high-efficiency water reducer.

[0061] Described potassium silicate selects modulus 2.9 potassium silicate for use.

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Abstract

The invention provides an acid-corrosion-resistant concrete pipe pile and a preparation method thereof. The acid-corrosion-resistant concrete pipe pile comprises the following components in parts by weight: 280-380 parts of cement, 130-160 parts of quartz ultrafine powder, 980-1230 parts of granite macadam, 520-780 parts of quartz sand, 110-160 parts of water, 10-22 parts of a water reducing agent, 28-48 parts of potash water glass and 3-9.6 parts of aluminum tripolyphosphate. The SiO2 content of the quartz ultrafine powder is greater than or equal to 90%, and the specific surface area is greater than or equal to 500m < 2 > / kg. According to the formula component concrete, the corrosion resistance of the pipe pile is improved, corrosion of an acid medium to pile body concrete is avoided, steel bars in the pipe pile can be protected against corrosion, the structural strength of the pipe pile is improved and the service life is prolonged.

Description

【Technical field】 [0001] The invention relates to the field of building materials, in particular to an acid corrosion-resistant concrete pipe pile and a preparation method thereof. 【Background technique】 [0002] Concrete pipe piles are one of the most widely used concrete foundation components; during the actual use of pipe piles, if there are various acidic media in the environment, the acidic media are easy to react with calcium hydroxide in concrete, and the reaction The product may be dissolved in water and lost, or the volume expansion may cause partial swelling of the structure, destroying the structure of the concrete. Once the corrosion is excessive, it will seriously affect the structural strength and service life of the pipe pile, and even cause the collapse of buildings and bridges, causing serious accidents and posing a great threat to people's lives and property. In the industry, there are many studies on chloride ion and sulfate corrosion resistance of pipe p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B111/23C04B111/56C04B111/20
CPCC04B28/344C04B2111/2015C04B2111/23C04B2111/56C04B2201/50C04B7/02C04B18/12C04B14/06C04B2103/302C04B12/04
Inventor 董伟东冯三苟杨金辉杨晓彬周艳文林成林丽华
Owner FUJIAN DADI CONCRETE PILE
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