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Acid-corrosion-resistant repair mortar and preparation method thereof

An acid corrosion-resistant and mortar technology is applied in the field of acid-resistant repair mortar and its preparation.

Inactive Publication Date: 2021-09-07
SHANGHAI MUNICIPAL SEWERAGE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventor found by repeating the proportions in the relevant acid-resistant mortar system literature and inventions that these mortars have good alkali and salt corrosion resistance, but are not resistant to acid corrosion and are not suitable for use in acidic environments

Method used

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  • Acid-corrosion-resistant repair mortar and preparation method thereof
  • Acid-corrosion-resistant repair mortar and preparation method thereof
  • Acid-corrosion-resistant repair mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Step 1: Prepare raw materials according to the components and parts by weight of the A compound and the B compound in Table 1, the ratio of the weight part of water to the total weight parts of the A compound and the B compound is 0.14;

[0056] Step 2: Mix A mixture and B mixture evenly;

[0057] Step 3: Pour the uniformly mixed material A in step 2 into water while stirring, and then continue stirring for 3 minutes to form a mixed solution;

[0058] Step 4: Pour the B mixture evenly mixed in step 2 into the mixed liquid in step 3, and keep stirring for 5 minutes to form a repair mortar;

[0059] Step 5: Let the repair mortar prepared in step 4 stand for 3 minutes.

Embodiment 2

[0061] Step 1: Prepare raw materials according to the components and parts by weight of the A compound and the B compound in Table 1, and the ratio of the weight part of the water to the total weight parts of the A compound and the B compound is 0.15;

[0062] Step 2: Mix A mixture and B mixture evenly;

[0063] Step 3: Pour the uniformly mixed material A in step 2 into water while stirring, and then continue stirring for 3 minutes to form a mixed solution;

[0064] Step 4: Pour the B mixture evenly mixed in step 2 into the mixed liquid in step 3, and keep stirring for 5 minutes to form a repair mortar;

[0065] Step 5: Let the repair mortar prepared in step 4 stand for 3 minutes.

Embodiment 3

[0067]Step 1: Prepare raw materials according to the components and parts by weight of the A compound and the B compound in Table 1, the ratio of the weight part of the water to the total weight parts of the A compound and the B compound is 0.13;

[0068] Step 2: Mix A mixture and B mixture evenly;

[0069] Step 3: Pour the uniformly mixed material A in step 2 into water while stirring, and then continue stirring for 3 minutes to form a mixed solution;

[0070] Step 4: Pour the B mixture evenly mixed in step 2 into the mixed liquid in step 3, and keep stirring for 5 minutes to form a repair mortar;

[0071] Step 5: Let the repair mortar prepared in step 4 stand for 3 minutes.

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Abstract

The invention discloses acid-corrosion-resistant repair mortar and a preparation method thereof. The acid-corrosion-resistant repair mortar comprises a mixture A, a mixture B and water, wherein the mixture A comprises the following components in parts by weight: 28-35 parts of cement; 8-12 parts of a mineral admixture, 4-5 parts of gypsum, 54-58 parts of fine sand, and 0.5-0.7 part of organic fiber, the mixture B is prepared from the following components in parts by weight: 0.03 to 0.05 part of a thixotropic agent, 0.03 to 0.05 part of a thickening time control agent, 0.7 to 0.9 part of hydrophobic rubber powder, 0.05 to 0.07 part of a tackifying water-retaining agent, 0.03 to 0.04 part of a compacting agent, and 0.05 to 0.07 part of a high-performance water reducing agent, the ratio of the weight part of the water to the total weight part of the mixture A and the mixture B is 0.13-0.17, and the cement is any one of aluminate cement, a mixture of aluminate cement and Portland cement and a mixture of aluminate cement and phosphate cement. According to the invention, aluminate cement is used as a main cementing material, and hydrophobic rubber powder and a compacting agent are used as auxiliary materials, so that the acid-corrosion-resistant repair mortar is prepared.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an acid corrosion-resistant repair mortar and a preparation method thereof. Background technique [0002] With the increase of industrial and domestic waste gas and waste liquid discharge, and the continuous expansion of the range of acidic environments, cement-based materials are facing more and more serious weak acidic or acidic environments, which are caused by acid corrosion. Deterioration of mechanical properties and durability is also becoming more and more common. Many underground sewage pipes, culverts, bridges, tunnels, dams and factory buildings in my country's inland and coastal areas have been corroded to varying degrees due to the influence of acidic environment during their long-term service. , endangering the safe operation of the project, it must be repaired and reinforced in time. [0003] It is generally believed in the engineering field that the use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B28/34C04B111/20C04B111/70
CPCC04B28/26C04B28/34C04B2201/10C04B2201/50C04B2111/20C04B2111/70C04B2111/00155C04B7/32C04B7/02C04B14/047C04B14/24C04B18/142C04B14/06C04B22/143C04B16/0633C04B24/005C04B22/062C04B22/148C04B24/2688C04B24/281C04B24/38C04B2103/0068C04B24/10C04B2103/302C04B22/0013
Inventor 田旭董家晏孙即梁金惠玲张鹏刚季福志张芬
Owner SHANGHAI MUNICIPAL SEWERAGE CO LTD
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