Anti-scouring and wear-resisting repair mortar for concrete pipes

A repair mortar and anti-abrasion technology, which is applied in the field of anti-abrasion repair mortar for concrete pipes, can solve the problems of low abrasive strength, general crack resistance, weak adhesion of substrates, etc. The effect of low elastic modulus and strong adhesion

Inactive Publication Date: 2017-01-04
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The abrasion strength of this patent is not high, the bonding a...

Method used

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Embodiment 1

[0040] A kind of anti-abrasive repair mortar for concrete pipes, comprising the following components by weight:

[0041] 30 parts of Portland cement;

[0042] 0.05 part of water reducing agent;

[0043] 40 parts of graded hard fine aggregate;

[0044] 0.05 part of defoamer;

[0045] Ultrafine material 0.10 parts.

[0046] In this embodiment, the heat of hydration of the Portland cement is 3d≤260KJ / Kg, and 7d≤300KJ / Kg. The impact-resistant and wear-resistant mortar made of the selected Portland cement has the properties of low hydration heat, moderate early strength and stable growth in later strength.

[0047] In this embodiment, the Mohs hardness index of the graded hard fine aggregate is 5, and the fineness modulus is 1.2. Hard fine aggregates ensure the impact resistance of the impact and wear-resistant mortar.

[0048] In this embodiment, the water reducing agent is a powdery polycarboxylate water reducing agent. Through the water-reducing effect of the water-reducing...

Embodiment 2

[0052] A kind of anti-abrasive repair mortar for concrete pipes, comprising the following components by weight:

[0053] Portland cement 38 parts;

[0054] 0.12 part of water reducing agent;

[0055] 46 parts of graded hard fine aggregate;

[0056] 0.2 part of defoamer;

[0057] Ultrafine material 0.8 parts.

[0058] In this embodiment, the heat of hydration of the Portland cement is 3d≤260KJ / Kg, and 7d≤300KJ / Kg. The impact-resistant and wear-resistant mortar made of the selected Portland cement has the properties of low hydration heat, moderate early strength and stable growth in later strength.

[0059] In this embodiment, the Mohs hardness index of the graded hard fine aggregate is 6, and the fineness modulus is 2. Hard fine aggregates ensure the impact resistance of the impact and wear-resistant mortar.

[0060] In this embodiment, the water-reducing agent is a composite of powdery polycarboxylate water-reducing agent and sulfamate-based high-efficiency water-reducin...

Embodiment 3

[0064] A kind of anti-abrasive repair mortar for concrete pipes, comprising the following components by weight:

[0065] 47 parts of Portland cement;

[0066] 0.20 part of water reducing agent;

[0067] 51 parts of graded hard fine aggregate;

[0068] 0.35 part of defoamer;

[0069] 1.5 servings of superfine material.

[0070] In this embodiment, the heat of hydration of the Portland cement is 3d≤260KJ / Kg, and 7d≤300KJ / Kg. The impact-resistant and wear-resistant mortar made of the selected Portland cement has the properties of low hydration heat, moderate early strength and stable growth in later strength.

[0071] In this embodiment, the Mohs hardness index of the graded hard fine aggregate is 7, and the fineness modulus is 3.3. Hard fine aggregates ensure the impact resistance of the impact and wear-resistant mortar.

[0072] In this embodiment, the water-reducing agent is a composite of powdered polycarboxylate water-reducing agent, sulfamate-based high-efficiency wat...

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Abstract

The invention discloses anti-scouring and wear-resisting repair mortar for concrete pipes. The anti-scouring and wear-resisting repair mortar is prepared from components in parts by weight as follows: 30-47 parts of Portland cement, 0.05-0.20 parts of a water reducer, 40-51 parts of graded hard fine aggregate, 0.05-0.35 parts of a defoaming agent and 0.10-1.5 parts of superfine materials. The anti-scouring and wear-resisting repair mortar which is prepared with the formula and used for the concrete pipes has higher scouring and wearing strength, low elastic modulus, high bonding capability with a base body and excellent anti-cracking ability. The anti-scouring and wear-resisting repair mortar which is prepared with the formula and used for the concrete pipes is particularly applicable to repairing of a current scouring part or is used as a pouring material of anti-scouring and wear-resisting concrete.

Description

technical field [0001] The invention relates to the technical field of mortar used for concrete pipes, in particular to an anti-abrasive repair mortar for concrete pipes. The mortar is mainly used for repairing parts washed by water flow, and can also be used as a pouring material for anti-scour concrete. Background technique [0002] At present, the water flow contains a large amount of suspended matter, which has a strong destructive ability driven by the high-speed water flow, and constantly collides and rubs the flow surface of the concrete pipeline, causing erosion, wear, cavitation and other damage to the concrete. This phenomenon reduces the service life of the pipeline and threatens the safety of the project. It needs to be regularly maintained and repaired, and the maintenance and repair cost is high. [0003] Existing anti-abrasion materials have exposed many problems in the construction process and the later performance of the site. For example, the early strengt...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 王宁王田堂阳运霞夏艳晴林燕黎茜
Owner JIAHUA SPECIAL CEMENT
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