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Polymer-modified repair mortar

A technology for repairing mortar and polymer, which is applied in the field of building materials, can solve the problems that the repair effect of polymer modified repair mortar cannot meet the repair requirements of engineering design, repair failure and other problems, and achieve easy on-site maintenance, improved workability, and reduced The effect of drying shrinkage

Inactive Publication Date: 2017-05-31
河池永固混凝土有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a polymer modified repair mortar, which can solve the problem that the actual repair effect of the existing polymer modified repair mortar is far from meeting the repair requirements of the engineering design, which leads to repair failure

Method used

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  • Polymer-modified repair mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1—polymer modified repair mortar

[0025] It is made from the following raw materials:

[0026] 700kg of sand, 180kg of cement, 40kg of fly ash, 80kg of mineral powder, 5kg of latex powder and 0.3kg of cellulose ether;

[0027] Wherein, described sand refers to the sand that has following particle gradation structure:

[0028] 9.5mm sieve hole: 0%;

[0029] 4.75mm sieve hole: 0%;

[0030] 2.36mm sieve hole: 5%;

[0031] 1.18mm sieve hole: 10%;

[0032] 600μm sieve residue: 71%;

[0033] 300μm sieve residue: 85%;

[0034] 150μm sieve residue: 80%;

[0035] Described fly ash refers to the fly ash that 0.045mm sieve hole sieves is less than 25%;

[0036] The mineral powder refers to a mineral powder with a specific surface area ≥ 400㎡ / kg and a 28-day activity index ≥ 98%.

Embodiment 2

[0037] Example 2—polymer modified repair mortar

[0038] It is made from the following raw materials:

[0039] 790kg of sand, 120kg of cement, 80kg of fly ash, 50kg of mineral powder, 2kg of latex powder and 1kg of cellulose ether;

[0040] Wherein, described sand refers to the sand that has following particle gradation structure:

[0041] 9.5mm sieve hole: 0%;

[0042] 4.75mm sieve hole: 0%;

[0043] 2.36mm sieve hole: 5%;

[0044] 1.18mm sieve hole: 10%;

[0045] 600μm sieve residue: 71%;

[0046] 300μm sieve residue: 85%;

[0047] 150μm sieve residue: 80%;

[0048] Described fly ash refers to the fly ash that 0.045mm sieve hole sieves is less than 25%;

[0049] The mineral powder refers to a mineral powder with a specific surface area ≥ 400㎡ / kg and a 28-day activity index ≥ 98%.

Embodiment 3

[0050] Embodiment 3—polymer modified repair mortar

[0051] It is made from the following raw materials:

[0052] 730kg of sand, 150kg of cement, 60kg of fly ash, 60kg of mineral powder, 1kg of latex powder and 0.1kg of cellulose ether;

[0053] Wherein, described sand refers to the sand that has following particle gradation structure:

[0054] 9.5mm sieve hole: 0%;

[0055] 4.75mm sieve hole: 10%;

[0056] 2.36mm sieve hole: 20%;

[0057] 1.18mm sieve hole: 50%;

[0058] 600μm sieve residue: 51%;

[0059] 300μm sieve: 70%;

[0060] 150μm sieve: 100%;

[0061] Described fly ash refers to the fly ash that 0.045mm sieve hole sieves is less than 25%;

[0062] The mineral powder refers to a mineral powder with a specific surface area ≥ 400㎡ / kg and a 28-day activity index ≥ 98%.

[0063] The preparation method of the polymer-modified repair mortar described in the above-mentioned embodiments is as follows: take the above-mentioned raw materials in proportion, add them to a...

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Abstract

The invention discloses polymer-modified repair mortar which is prepared from the following raw materials in parts by weight: 70-80 parts of sand, 12-18 parts of cement, 4-8 parts of coal ash, 5-8 parts of mineral powder, 1-5 parts of emulsion powder and 0.1-1 part of cellulose ether. By integrating the characteristics of flexibility of the cellulose ether and rigidity of cement and strength complementarity between the emulsion powder and the cellulose ether, adding coal ash and defining the particle sizes, adding the mineral powder and defining the specific surface area of the mineral powder and 28-day activity index and adding a raw material sand and defining the grain composition structure of the sand, the polymer-modified repair mortar disclosed by the invention has excellent performances of water-retaining rate, shrinking percentage, binding strength, compressive strength and the like, so that phenomena such as cracks and empty drums at the repair part are effectively avoided when the polymer-modified repair mortar is used for engineering repair.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a polymer modified repair mortar. Background technique [0002] At present, the research on polymer modified repair mortar mainly focuses on the form of on-site emulsion mixing, that is, the form of mixing polymer, cement and sand at the construction site. However, due to the different performance parameters of cement and sand in different construction sites, the compatibility between them and the polymer emulsion, the fluctuation of the proportion of ingredients, and the change of construction operability will not meet the engineering design repair requirements, resulting in repair failure. Contents of the invention [0003] The invention provides a polymer modified repairing mortar, which can solve the problem that the actual repairing effect of the existing polymer modified repairing mortar is far from meeting the repairing requirements of the engineering design, thus resul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B111/72
CPCC04B28/00C04B2111/72C04B2201/50C04B14/06C04B18/08C04B14/02C04B24/24C04B24/383
Inventor 潘战雄寇丹生梁冠忠李粒杨宝翠王冠球韦正刚覃宝能莫张艳
Owner 河池永固混凝土有限责任公司
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