Thin-layer pavement patching mortar

A road surface repair and mortar technology, applied in the field of building materials, can solve the problems of poor construction effect, long setting time, low bonding strength, etc., and achieve the effect of simple and convenient construction, smooth appearance and good mechanical properties

Active Publication Date: 2014-05-07
北京宝辰联合科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention adds water-retaining agent and water-reducing agent, effectively adjusts the viscosity of the repair mortar, and overcomes the defects in the prior art such as high viscosity strength, poor construction effect, low bonding strength, long setting time, and poor bending resistance, etc. Improve the construction efficiency and enhance the aesthetics of the road surface after construction; in addition, the addition of defoamer enhances the durability of the repair mortar and prolongs the service life. The rubber powder used is acrylic rubber powder, and acrylic acid forms a three-dimensional network in the mortar film, w

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0064] The preparation method of thin-layer pavement repair mortar provided by the invention comprises the following steps:

[0065] (1) First weigh each component according to the weight percentage of each component, then place cement, quartz sand, fiber, and water-retaining agent in the mortar mixing tank in advance, and use a portable mixer to dry mix until uniform;

[0066] (2) Then add rubber powder, water reducer, defoamer, flocculant, heavy calcium powder and water to mix through a concrete mixer, and it can be used after mixing evenly.

Embodiment 1

[0067] Embodiment 1: a kind of thin-layer pavement repair mortar is made up of base material and auxiliary material, and the weight ratio of each component in base material and auxiliary material is as follows:

[0068] Component Weight percent

[0069] cement 18

[0070] 10-20 mesh quartz sand 14

[0071] 20-40 mesh quartz sand 18

[0072] 40-70 mesh quartz sand 18

[0073] Water retaining agent 0.01

[0074] rubber powder 3

[0075] Water reducer 0.1

[0076] Defoamer 0.1

[0077] Fiber 0.1

[0078] Flocculant 0.1

[0079] Heavy Calcium Powder 18

[0080] Water Make up to 100%.

[0081] First install the above weight percentage and weigh each component, then place cement, quartz sand, fiber, and water-retaining agent in the mortar mixing tank in advance, and use a portable mixer to dry mix until uniform; then add rubber powder, water-reducing agent, and defoaming agent The agent, flocculant, heavy calcium powder and water are mixed by a concrete mixer, and can be ...

Embodiment 2

[0082] Embodiment 2: a kind of thin layer pavement repair mortar, is made up of base material and auxiliary material, and the weight ratio of each component in base material and auxiliary material is as follows:

[0083] Component Weight percent

[0084] cement 20

[0085] 10-20 mesh quartz sand 16

[0086] 20-40 mesh quartz sand 20

[0087] 40-70 mesh quartz sand 20

[0088] Water retaining agent 0.015

[0089] Rubber powder 3.5

[0090] Water reducer 0.15

[0091] Defoamer 0.125

[0092] Fiber 0.15

[0093] Flocculant 0.15

[0094] Heavy Calcium Powder 20

[0095] Water Make up to 100%.

[0096] First install the above weight percentage and weigh each component, then place cement, quartz sand, fiber, and water-retaining agent in the mortar mixing tank in advance, and use a portable mixer to dry mix until uniform; then add rubber powder, water-reducing agent, and defoaming agent The agent, flocculant, heavy calcium powder and water are mixed by a concrete mixer, an...

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Abstract

The invention discloses thin-layer pavement patching mortar which is composed of a basic material and an accessory material, wherein the basic material comprises cement and quartz sand, and the accessory material comprises a water retention agent, rubber powder, a water reducing agent, a defoamer, fibers, a flocculant, coarse whiting powder and water. The thin-layer pavement patching mortar disclosed by the invention has the beneficial effects that the thin-layer pavement patching mortar provided by the invention can meet the strength needed for pavement traffic, and can be combined with pavement materials well, especially in harsh environments such as expansion caused by wet and contraction caused by dry, expansion caused by heat and contraction caused by cold, freezing and thawing cycle, and the like, and the mortar can overcome a tensile stress between the mortar and concrete due to unsynchronized construction, thereby meeting the requirements on the long-term protection of concrete pavements; the patching mortar provided by the invention has the characteristics of high early strength and stable long-term strength development, and is good in flexibility, impact resistance and abrasion resistance; in addition, the mortar has good liquidity and water retention, and can satisfy the demands of different engineering constructions, therefore, the mortar can be widely applied to the patching of concrete pavements in the fields of municipal engineering, pavements, airports, and the like.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a thin-layer road surface repair mortar. Background technique [0002] With the continuous development of science and technology, concrete is the largest building structure material used today. Due to reasons such as unreasonable concrete structure design, construction defects, environmental erosion, improper maintenance and its own aging, concrete will inevitably crack in engineering applications. And damage, the cracking and damage of concrete will seriously affect the normal use of the concrete structure, if it is not repaired in time, it will bring great safety hazards and economic losses. [0003] Concrete refers to the pavement with cement concrete slab as the surface layer. It refers to the pavement structure composed of cement concrete slab as the surface layer, base layer and cushion layer, also known as rigid pavement. The materials used for cement concrete ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/42C04B24/38C04B24/26
Inventor 王义
Owner 北京宝辰联合科技股份有限公司
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