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Rapid hardening early strength type composite repair mortar

A repair mortar and early-strength technology, which is applied in the field of building materials, can solve the problems of repair mortar strength shrinkage, large dry shrinkage rate, and low bond strength, and achieve improved water retention, dry shrinkage, and strong adhesion. Effect

Active Publication Date: 2019-04-23
长春昌驰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a fast-hardening and early-strength composite repair mortar, which solves the problems of repair mortar strength shrinkage, large drying shrinkage and low bonding strength in the prior art

Method used

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  • Rapid hardening early strength type composite repair mortar
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  • Rapid hardening early strength type composite repair mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A rapid-hardening and early-strength composite repair mortar, consisting of the following components in weight percentage:

[0034] Water 5%, cement 20%, silica fume 1%, fly ash 2%, quartz sand 70% (coarse sand 25%, medium sand 25%, fine sand 20%), composite early strength agent 0.4% (A component : Nano calcium carbonate whisker 0.21%, B component: triisopropanolamine: 0.01% and aluminum sulfate: 0.22%), water reducing agent 0.06%, rubber powder 1.48%, hybrid fiber 0.06% (basalt fiber 0.05%, polypropylene fiber 0.01%), the particle diameter of coarse sand is 2.36-4.75mm, the particle diameter of medium sand is 1.18-2.36mm, and the particle diameter of fine sand is 0.6-1.18mm.

[0035] Its preparation method comprises the following steps:

[0036] S1. According to the above formula of a fast-hardening and early-strength composite repair mortar, weigh each component for later use;

[0037] S20: mechanically milling and activating the fly ash to a particle size of 200 me...

Embodiment 2

[0047] A rapid-hardening and early-strength composite repair mortar, consisting of the following components in weight percentage:

[0048] Water 7.29%, cement 22.25%, silica fume 2.47%, fly ash 1.3%, quartz sand 65.05% (coarse sand: 25.13%; medium sand: 21.16%; fine sand 18.76%), composite early strength agent 0.44% (A Components: nano calcium carbonate whiskers 0.21%, B component: triisopropanolamine 0.01%, aluminum sulfate 0.22%), water reducing agent 0.08%, rubber powder 1.05%, hybrid fiber 0.07% (basalt fiber 0.06%, Polypropylene fiber 0.01), the particle size of coarse sand is 2.36-4.75mm, the particle size of medium sand is 1.18-2.36mm, and the particle size of fine sand is 0.6-1.18mm.

[0049] Its preparation method comprises the following steps:

[0050] S1. According to the above formula of a fast-hardening and early-strength composite repair mortar, weigh each component for later use;

[0051] S20: mechanically milling and activating the fly ash to a particle size ...

Embodiment 3

[0061] A rapid-hardening and early-strength composite repair mortar, consisting of the following components in weight percentage:

[0062] Water 6.79%, cement 20.75%, silica fume 2.31%, fly ash 1.21%, quartz sand 67.41% (coarse sand: 26.04%; medium sand: 21.92%; fine sand 19.44%), composite early strength agent 0.42% (A Components: nano calcium carbonate whiskers 0.20%, B component: triisopropanolamine: 0.01% and aluminum sulfate: 0.21%), water reducer 0.07%, rubber powder 0.97%, hybrid fiber 0.07% (basalt fiber 0.06 %, polypropylene fiber 0.01), the particle size of coarse sand is 2.36-4.75mm, the particle size of medium sand is 1.18-2.36mm, and the particle size of fine sand is 0.6-1.18mm.

[0063] Its preparation method comprises the following steps:

[0064] S1. According to the above formula of a fast-hardening and early-strength composite repair mortar, weigh each component for later use;

[0065] S20: mechanically milling and activating the fly ash to a particle size ...

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Abstract

The invention belongs to the technical field of building materials, and provides rapid hardening early strength type composite repair mortar. The rapid hardening early strength type composite repair mortar comprises, by weight, 5%-10% of water, 20%-30% of cement, 1%-5% of silica fume, 1%-5% of fly ash, 50%-70% of quartz sand, 0.4%-0.5% of composite early strength agents, 0.06%-0.1% of water reducing agents, 1%-5% of gelatin powder and 0.06%-0.8% of hybrid fibers. The composite early strength agents comprise components A and components B, the components A are nanometer calcium carbonate whiskers, the components B are mixtures of triisopropanolamine and aluminum sulfate, the quartz sand comprises coarse sand, medium sand and fine sand, and the hybrid fibers include basalt fibers and polypropylene fibers. The rapid hardening early strength type composite repair mortar has the advantage that the problems of strength decreasing, high dry shrinkage and low bonding strength of repair mortar in the prior art can be solved by the aid of the rapid hardening early strength type composite repair mortar.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a fast-hardening and early-strength composite repair mortar. Background technique [0002] As the main building material, cement concrete has played an irreplaceable role in my country's infrastructure construction, especially in road construction. As one of the two high-grade pavements in my country, cement concrete pavement has been widely used in road construction in my country due to its high rigidity, strong bearing capacity, low cost, and convenient construction. However, with the development of society, the road transportation volume has increased sharply. The cement concrete pavement has been crushed and worn by vehicles for a long time, and the road surface has been damaged to varying degrees, especially the frequent occurrence of heavy and overloaded vehicles, which has accelerated the road damage. speed. Therefore, the repair of existing cement concrete pavem...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/72C04B2201/50C04B2201/52C04B18/146C04B18/08C04B24/122C04B22/148C04B16/0633C04B14/4643C04B14/06C04B14/383C04B18/22C04B2103/302
Inventor 肖力光张洪磊齐凤梅李根壮林侠
Owner 长春昌驰新材料科技有限公司
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