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A fast-hardening and early-strength composite repair mortar

A repairing mortar and early-strength technology, applied in the field of building materials, can solve the problems of low bonding strength, large dry shrinkage, shrinkage of repairing mortar strength, etc., and achieve strong adhesion, dry shrinkage, and improved water retention. Effect

Active Publication Date: 2021-06-11
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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  • A fast-hardening and early-strength composite repair mortar
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  • A fast-hardening and early-strength 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 proposes a fast-hardening and early-strength composite repair mortar, which is composed of the following components in weight percent: 5% to 10% of water, 20% to 30% of cement, and 1% to 5% of silica fume. %, fly ash 1% to 5%, quartz sand 50% to 70%, composite early strength agent 0.4% to 0.5%, water reducing agent 0.06% to 0.1%, rubber powder 1% to 5%, mixed fiber 0.06% ~0.8%, the composite early strength agent is composed of A component and B component, the A component is nano-calcium carbonate whiskers, and the B component is a mixture of triisopropanolamine and aluminum sulfate, so The quartz sand is composed of coarse sand, medium sand and fine sand, and the hybrid fiber is composed of basalt fiber and polypropylene fiber. The invention solves the problems in the prior art that the strength of the repair mortar shrinks back, the dry shrinkage rate is large, and the bonding strength is low.

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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Patent Type & Authority Patents(China)
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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