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A kind of anti-salt erosion concrete and preparation method thereof

A concrete and nano-clay technology, applied in the field of concrete, can solve problems such as wind erosion, freeze-thaw, increase of corrosion salt, concrete structure damage, etc., and achieve the effects of resisting erosion, prolonging service life, and eliminating air bubbles

Active Publication Date: 2021-04-30
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, during the actual application of concrete, it may also be cracked by wind erosion, freeze-thaw, etc., and the actual engineering components are often accompanied by cracks due to the load during the service process, increasing the passage of corrosion salt into the interior of the concrete, and the superposition of various factors Damage to concrete structures is more severe

Method used

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  • A kind of anti-salt erosion concrete and preparation method thereof
  • A kind of anti-salt erosion concrete and preparation method thereof
  • A kind of anti-salt erosion concrete and preparation method thereof

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preparation example Construction

[0033] The present invention also provides a preparation method of the salt erosion-resistant concrete described in the above technical solution, comprising the following steps:

[0034] After mixing stones, sand, cement, nanoclay, water reducer, thickener, defoamer, air-entraining agent and water, molding, demoulding and curing are carried out in sequence to obtain salt erosion resistant concrete.

[0035] In the present invention, the mixing is preferably:

[0036] Mix the sand, stones and the first part of water, and then mix them with cement, so that the surface of the sand and stones is covered with a layer of cement slurry film to form a sand-cement mixture;

[0037] mixing the nanoclay with a second portion of water to form a nanoclay dispersion;

[0038] Mix sandstone cement mixture, nanoclay dispersion liquid, water reducer, thickener, defoamer, air entraining agent and remaining water to form a mixed material.

[0039] In the present invention, the first part of wa...

Embodiment 1

[0046] A kind of salt corrosion resistant concrete, the mix ratio of each component is as follows:

[0047] Cement 570kg / m 3 , P.O42.5R ordinary Portland cement, the strength grade is 42.5R;

[0048] Stone 1104kg / m 3 , produced in Tongliao, Inner Mongolia, high-quality crushed stone, with a particle size of 5-25mm;

[0049] Sand 660kg / m 3 , produced from high-quality medium sand in the Ordos area of ​​Inner Mongolia, with a fineness modulus of 2.3-3.0;

[0050] Water 228kg / m 3 ;

[0051] Nano kaolin 5.7kg / m 3 , produced in the plateau mineral products processing plant, with a fineness of 50-80nm;

[0052] Nano montmorillonite 4.9kg / m 3 , nano-bentonite 6.8kg / m 3 , nano-montmorillonite and nano-bentonite are produced in plateau mineral product processing plants, with a fineness of 100-200nm;

[0053] Activated nano attapulgite 8.4kg / m 3 , using Changzhou Mineral Products Technology Co., Ltd. to produce raw ore and high-viscosity ore. The ore source is Xuyi County, Ji...

Embodiment 2

[0065] A kind of salt corrosion resistant concrete, the mix ratio of each component is as follows:

[0066] Cement 347kg / m 3 , P.O42.5R ordinary Portland cement, the strength grade is 42.5R;

[0067] Stone 1156kg / m 3 , produced in Tongliao, Inner Mongolia, high-quality crushed stone, with a particle size of 5-25mm;

[0068] Sand 580kg / m 3 , produced from high-quality medium sand in the Ordos area of ​​Inner Mongolia, with a fineness modulus of 2.3-3.0;

[0069] Water 234kg / m 3 ;

[0070] Nano kaolin 5.7kg / m 3 , produced in the plateau mineral products processing plant, with a fineness of 50-80nm;

[0071] Nano montmorillonite 4.9kg / m 3 ,

[0072] Nano bentonite 6.8kg / m 3 , nano-montmorillonite and nano-bentonite are produced in plateau mineral product processing plants, with a fineness of 100-200nm;

[0073] Activated nano attapulgite 8.4kg / m 3 , using Changzhou Mineral Products Technology Co., Ltd. to produce raw ore and high-viscosity ore. The ore source is Xuyi ...

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Abstract

The invention provides a salt erosion-resistant concrete and a preparation method thereof, belonging to the field of concrete. The salt erosion-resistant concrete provided by the present invention comprises the following components in parts by mass: 570-600 parts of cement, 1100-1106 parts of gravel, 640-665 parts of sand, 25.5-26 parts of nanoclay, and 0.32-0.35 parts of water reducer 0.02-0.04 parts of thickener, 0.23-0.27 parts of defoamer, 0.35-0.42 parts of air-entraining agent, and 185-240 parts of water. The invention effectively improves the pore structure inside the concrete by adding the nano-clay, the incorporation of the nano-clay reduces the corrosion of the concrete to chloride and sulfate, and prolongs the service life of the concrete. The results of the examples show that the salt erosion-resistant concrete provided by the invention can effectively resist the erosion of chloride salts and sulfates.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a salt corrosion resistant concrete and a preparation method thereof. Background technique [0002] Corrosive ions in saline soil and salt lakes mainly include chloride ions, sulfate ions, magnesium ions, etc. Because some infrastructure needs to be built in corrosive environments such as saline soil and salt lakes, the corrosion resistance of concrete has attracted extensive attention. [0003] In addition, during the actual application of concrete, it may also be cracked by wind erosion, freeze-thaw, etc., and the actual engineering components are often accompanied by cracks due to the load during the service process, increasing the passage of corrosion salt into the interior of the concrete, and the superposition of various factors The damage to the concrete structure is more serious. Therefore, how to ensure the salt erosion resistance of concrete structures has important practical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/20C04B2111/2015C04B14/02C04B14/06C04B14/10C04B2103/302C04B24/383C04B24/32C04B24/20
Inventor 闫长旺张菊王萧萧庞鹏飞
Owner INNER MONGOLIA UNIV OF TECH
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