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Mortar for concrete base surface repair, and preparation method thereof

A technology of concrete and base surface, applied in the field of building mortar, can solve the problems of high price, poor crack resistance, poor adhesion, etc., to achieve good frost resistance, ensure repair performance, and reduce damage.

Inactive Publication Date: 2015-08-26
WANHUA ENERGY-SAVING TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of poor adhesion, poor crack resistance and high price in the existing mortar, and provide a mortar with strong adhesion, excellent crack resistance and compression resistance, high bonding strength and low price. Mortar for repairing concrete base surface with simple preparation process and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of mortar that is used for concrete base surface repair of the present embodiment, the mass parts of each component are as follows:

[0028] Portland cement 20

[0029] Sulphoaluminate cement 80

[0030] River sand 40-70 mesh 40

[0031] River sand 70-150 mesh 60

[0032] Heavy Calcium Powder 20

[0033] Anhydrite 20

[0034] Polypropylene fiber (3mm) 0.4

[0035] Hydroxymethyl propyl cellulose ether 0.3

[0036] Defoamer 0.1

[0037] Water reducer 0.3

[0038] Waterborne Epoxy Emulsion 45

[0039] water 25

[0040] making process:

[0041] 1) Add portland cement, sulphoaluminate cement, river sand, heavy calcium powder, anhydrite, polypropylene fiber, and hydroxymethyl propyl cellulose ether into the dry powder mortar mixer according to the above ratio and stir evenly 30 minutes;

[0042] 2) Mix the water-based epoxy resin and the epoxy resin curing agent according to the mass ratio of 1: (0.8-1.3) to prepare a water-based epoxy emulsion, then add wa...

Embodiment example 2

[0045] A mortar used for repairing concrete base surfaces, the mass parts of each component are as follows:

[0046] Portland cement 50

[0047] Sulphoaluminate cement 50

[0048] Quartz sand 40-70 mesh 60

[0049] Quartz sand 70-150 mesh 130

[0050] Blast Furnace Slag Powder 30

[0051] Fly Ash 40

[0052] Wood fiber (2mm) 0.25

[0053] Methylcellulose 0.3

[0054] Water reducer 0.1

[0055] Defoamer 0.2

[0056] Waterborne Epoxy Emulsion 70

[0057] water 30

[0058] making process:

[0059] 1. Add Portland cement, sulphoaluminate cement, quartz sand, blast furnace slag powder, fly ash, wood fiber, and methyl cellulose into the dry powder mortar mixer according to the above ratio and stir evenly for 30 minutes;

[0060] 2. Mix the water-based epoxy resin and the epoxy resin curing agent according to the mass ratio of 1:1 to prepare a water-based epoxy emulsion, then add water to the water-based epoxy emulsion and stir evenly, the water-based epoxy emulsion and wa...

Embodiment 3

[0063] A kind of mortar that is used for concrete base surface repair of the present embodiment, the mass parts of each component are as follows:

[0064] Portland cement 80

[0065] Sulphoaluminate cement 100

[0066] Quartz sand 40-70 mesh 60

[0067] Quartz sand 70-150 mesh 130

[0068] Blast Furnace Slag Powder 50

[0069] Fly Ash 50

[0070] Polyacrylamide fiber (4mm) 0.5

[0071] Methylcellulose 0.5

[0072] Water reducer 0.1

[0073] Defoamer 0.1

[0074] Waterborne Epoxy Emulsion 80

[0075] water 75

[0076] making process:

[0077] 1. Add Portland cement, sulphoaluminate cement, quartz sand, blast furnace slag powder, fly ash, polyacrylamide fiber, and methyl cellulose into the dry powder mortar mixer according to the above ratio and stir evenly for 30 minutes;

[0078] 2. Mix the water-based epoxy resin and the epoxy resin curing agent according to the mass ratio of 1:1.2 to prepare the water-based epoxy emulsion, then add water to the water-based epoxy e...

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PUM

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Abstract

The present invention belongs to a building mortar, and particularly relates to a mortar for concrete base surface repair, and a preparation method thereof. The mortar comprises the following raw materials by mass: 20-80 parts of silicate cement, 20-100 parts of sulphoaluminate cement, 80-190 parts of aggregate, 40-100 parts of a mineral admixture, 30-80 parts of an aqueous epoxy emulsion, 0.2-0.5 part of cellulose ether, 0.1-0.5 part of anti-cracking fibers, and 20-85 parts of water. The mortar of the present invention has characteristics of strong adhesion, excellent cracking resistance, excellent compression resistance, high bonding strength, and low price.

Description

technical field [0001] The invention belongs to a construction mortar, in particular to a mortar used for repairing concrete base surfaces and a preparation method thereof. Background technique [0002] As the main building material, concrete is widely used in various fields. Concrete buildings and components are subject to various man-made and natural damages during use, and cracks and surface abrasions often appear. If they are not treated in time, the depth and scope of damage will become larger and larger. At present, the commonly used repair mortars are mainly inorganic cement mortar, polymer mortar and organic resin mortar. Inorganic cement mortar often has poor adhesion to old concrete components, high brittleness, poor crack resistance, and short service life after repair. Polymer repair mortar is generally prepared by adding rubber powder or acrylic resin emulsion to dry powder mortar. Although the construction performance is good, the bonding strength and crack re...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B24/38
Inventor 李晓静王磊窦忠山王炳凯王耀西胡迎兰李坤潘振勇
Owner WANHUA ENERGY-SAVING TECH GRP CO LTD
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