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Grouting Binder and Its Performance Parameter Testing Method

A binder and grouting technology, which is applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of harsh construction environment, long construction time, difficult repair, etc., and achieve the effect of improving mechanical properties and high early strength

Active Publication Date: 2020-12-01
北京鸿锐嘉科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the tunnel lining is constructed in sections, and the construction environment is extremely harsh, and the construction time is long, the traditional grouting materials can only play a filling role, but cannot play a role in repairing and combining
Secondly, the concrete of the previous slab has hardened during grouting, and conventional materials cannot bond or repair the concrete of the previous slab, and the overlapping parts, open ends and circumferential construction joints of the previous slab are usually weak parts. For the connection part, it is extremely difficult to repair

Method used

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  • Grouting Binder and Its Performance Parameter Testing Method
  • Grouting Binder and Its Performance Parameter Testing Method
  • Grouting Binder and Its Performance Parameter Testing Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a grouting binder (standard type), and its components are by weight: 500-1500 parts of cement, preferably 700-1200 parts; 500-3000 parts of aggregate, preferably 1000-2000 parts; 10-150 parts of admixture, preferably 40-110 parts; 5-150 parts of rubber powder, preferably 30-100 parts; 1-20 parts of superplasticizer, preferably 5-15 parts; 1-10 parts of anti-cracking capsule, Preferably 4-8 parts; 0.1-5 parts of defoamer, preferably 1-3 parts; 0.02-2 parts of plastic expansion agent, preferably 0.1-1 part; 20-150 parts of hardening expansion agent, preferably 50-110 parts; early strength 0.5-10 parts of agent, preferably 1-6 parts; 0.5-5 parts of slump-retaining agent, preferably 1-4 parts; 0.5-5 parts of fiber, preferably 1-4 parts; mixing water is powder (the total amount of the above-mentioned materials weight) 0.10-0.35 times.

[0042] Through the above proportions, a standard grouting binder can be formed, which has very high early strength...

Embodiment 2

[0073] This embodiment provides a kind of grouting binder (high bonding type), and its components are by weight: 500-1500 parts of cement, preferably 700-1200 parts; 500-1500 parts of aggregate, preferably 700-1200 parts 10-150 parts of admixture, preferably 40-110 parts; 1-5 parts of rubber powder, preferably 2-3 parts; 1-20 parts of superplasticizer, preferably 5-15 parts; 1-10 parts of anti-crack capsule parts, preferably 4-8 parts; 0.1-5 parts of defoamer, preferably 1-3 parts; 0.1-2 parts of plastic expansion agent, preferably 0.1-1 part; 20-150 parts of hardening expansion agent, preferably 50-110 parts; 0.5-10 parts of early strength agent, preferably 1-6 parts; 0.5-5 parts of slump retaining agent, preferably 1-4 parts; 0.5-5 parts of fiber, preferably 1-4 parts; 5-150 parts of emulsion, preferably 20-110 parts parts; the mixing water is 0.10-0.25 times of the powder.

[0074] In this embodiment, the cement is Portland cement or ordinary Portland cement with a strengt...

Embodiment 3

[0101] The present embodiment provides a kind of grouting binder (high bonding type), and the main component of high bonding type is by weight: cement (425) 1000 parts; Aggregate 1000 parts; Admixture (silica fume) 60 parts; rubber powder (5010N) 1 part; superplasticizer (PC1030) 2 parts; anti-crack capsule 1 part; defoamer (organosiloxane) 0.3 part; plastic expansion agent (aluminum powder) 0.1 part; 20 parts of expansion agent (HCSA); 1 part of early strength agent (sodium carbonate); 0.1 part of slump retaining agent (sodium gluconate); 2 parts of fiber (basalt fiber); 100 parts of emulsion (S623); 350 parts of mixing water.

[0102] The performance parameters of the grouting binder of the present embodiment are shown in the following table by the above-mentioned formula:

[0103]

[0104] The high-adhesive grouting binder of this embodiment, through the above ratio, has super strong mechanical properties, that is, the 28d compressive strength reaches 65MPa, the 28d flex...

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Abstract

The invention discloses a grouting compound and a performance parameter detection method thereof. The grouting compound comprises the following components in parts by weight: 500-1500 parts of cement,500-3000 parts of aggregate, 10-150 parts of an admixture, 5-150 parts of rubber powder, 1-20 parts of a high-efficiency water-reducing agent, 1-10 parts of an anti-cracking capsule, 0.1-5 parts of adefoaming agent, 0.02-2 parts of a plastic expanding agent, 20-150 parts of a hardening expanding agent, 0.5-10 parts of an early strength agent, 0.5-5 parts of a slump retaining agent and 0.5-5 parts of fiber, wherein mixing water is 0.10-0.35 times of powder. Through a matching ratio, the grouting compound has very high early strength and superstrong coagulation retardation, has 90min fluiditybeing better than the discharge flow performance of the conventional grouting material, and can fully densify and infiltrate a concrete interface; in addition, because of good bonding performance, a circumferential construction joint constructed on a previous slab and an open end of the previous slab are repaired better to obtain overall bonding strength, so that mechanical properties of a liningare greatly improved; the defects that when the conventional grouting material is used for repairing, an original base surface is required to be chiseled and be brushed with an interface agent are overcome, and a concrete structure can be directly repaired.

Description

technical field [0001] The invention relates to the related field of tunnels, in particular to a grouting binder and a method for detecting performance parameters. Background technique [0002] Our country is a mountainous country, so the amount of tunnels is also very large. In the tunnel lining (secondary lining) construction, due to the special position of the vault, the construction may be due to the reservation of pouring and unreasonable setting of plugging holes, the slump of the pumped concrete is large, the pressure of the pumped concrete is not well controlled, and the concrete Shrinkage, uneven support and other reasons will inevitably cause the second-lined vault and the concrete primary support surface to not adhere closely, and the concrete capping of the arch is prone to voids and cavities. Due to secondary lining defects, the stress on the lining is uneven, which deteriorates the stress condition of the lining and changes the stress state of the lining desig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04G01N19/04C04B111/70
CPCC04B28/04C04B2111/70C04B2201/20C04B2201/50G01N19/04C04B14/06C04B18/146C04B18/08C04B18/12C04B24/2623C04B2103/302C04B40/0039C04B24/42C04B24/32C04B24/00C04B22/02C04B24/121C04B24/124C04B22/04C04B24/126C04B22/066C04B24/04C04B22/085C04B22/147C04B22/10C04B12/04C04B24/06C04B24/10C04B16/02C04B16/0641C04B14/42C04B14/46
Inventor 佘海龙耿春雷徐晓峰何博
Owner 北京鸿锐嘉科技发展有限公司
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