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Repairing and plugging material and preparation method thereof

A technology of plugging material and composite cementitious material, which is applied in the field of repairing plugging materials and their preparation, can solve the problems of slow hardening, slow strength development, poor anti-seepage and plugging performance of the plugging material, and achieves good anti-seepage performance and durability, improved safety and service life, good structural consistency

Active Publication Date: 2021-12-24
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a repair plugging material and a preparation method thereof to solve the problems of slow hardening, slow strength development and poor seepage-proof plugging properties of existing plugging materials.

Method used

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  • Repairing and plugging material and preparation method thereof
  • Repairing and plugging material and preparation method thereof

Examples

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preparation example Construction

[0043] Another object of the present invention is to provide a kind of preparation method of above-mentioned repairing plugging material, comprising the following steps:

[0044] S1. Mix the enhanced composite mineral admixture, composite expansion component, rheological agent, water reducer, defoamer, anti-seepage water repellent, coagulant and active reinforcing component to prepare a premix ;

[0045] S2. Add composite cementitious material to the premixed material, stir evenly, and obtain repairing and plugging material.

[0046] It also includes the step of: stirring the repairing and plugging material and mixing water into a slurry, and performing the repairing and plugging construction; wherein, the water-material ratio of the mixing water and the repairing and plugging material is in the range of 0.28 to 0.34.

[0047] The repairing and plugging material prepared by the present invention is specially used for repairing and plugging leaks caused by structural concrete ...

Embodiment 1

[0051] This embodiment provides a preparation method for repairing leakage plugging material, comprising the following steps:

[0052] 1) Weigh each raw material according to the ratio, each raw material and its dosage include: 65kg of composite cementitious material (56.875kg of sulphoaluminate cement, 8.125kg of ordinary Portland cement), 24.155kg of enhanced composite mineral admixture (tuff 12.0775kg, metakaolin 9.662kg, talc 2.4155kg), composite expansion component 5.5kg (calcined magnesia 5.375kg, azodicarbonamide 0.125kg), rheology agent 0.25kg (hydrated magnesium aluminum silicate 0.05kg, hydrogenated Castor oil thixotrope 0.2kg), water reducer 0.55kg, defoamer 0.06kg, anti-seepage water repellent 0.085kg, coagulant 0.4kg (lithium carbonate 0.1kg, aluminum sulfate 0.15kg, calcium formate 0.15kg) , 4kg of active enhancing components;

[0053] 2) Put the weighed enhanced composite mineral admixture, composite expansion component, rheology agent, water reducer, defoamer,...

Embodiment 2

[0055] This embodiment provides a kind of preparation method of repairing leakage plugging material, and the difference with embodiment 1 is:

[0056] In step 1), each raw material and its consumption include: 68kg of composite cementitious material (61.2kg of sulphoaluminate cement, 6.8kg of ordinary Portland cement), 21.25kg of enhanced composite mineral admixture (10.625kg of tuff, partial Kaolin 6.375kg, talc 4.25kg), composite expansion component 7.0kg (calcined magnesia 6.86kg, azodicarbonamide 0.14kg), rheological agent 0.36kg (hydrated magnesium aluminum silicate 0.12kg, hydrogenated castor oil thixotropic Glue 0.24kg), water reducer 0.64kg, defoamer 0.07kg, impervious water repellent 0.08kg, coagulant 0.6kg (lithium carbonate 0.3kg, aluminum sulfate 0.2kg, calcium formate 0.1kg), activity enhancement group Divide 2kg;

[0057] In step 2), add 33kg water in the repair plugging material;

[0058] Other steps are the same as participating in Example 1.

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Abstract

The invention provides a repairing and plugging material and a preparation method thereof. The repairing and plugging material is prepared from the following components in parts by weight: 65 to 80 percent of a composite cementing material, 10 to 25 percent of an enhanced composite mineral admixture, 5 to 12 percent of a composite expansion component, 0.2 to 1.0 percent of a rheological agent, 0.5 to 1.2 percent of a water reducing agent, 0.05 to 0.1 percent of a defoaming agent, 0.08 to 0.12 percent of an anti-seepage water repellent, 0.4 to 1.0 percent of a coagulation accelerator and 2 to 6 percent of an activity enhancing component. The prepared repairing and leaking stoppage material is specially used for repairing and leaking stoppage of leakage and the like caused by structural concrete cracks and infiltration line lifting of water conservancy projects, has the characteristics of high filling degree, micro expansion, high seepage prevention, early strength, high strength, high durability and the like, can realize rapid repairing and leaking stoppage, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of building engineering materials, in particular to a leak-repairing and plugging material and a preparation method thereof. Background technique [0002] Concrete materials in water conservancy projects are prone to problems such as temperature difference cracks and humidity gradient cracks. When the crack width reaches a certain limit, leakage of concrete structures in water conservancy projects will occur; in addition, the infiltration line of water conservancy project design is higher than the actual water storage. However, in the flood season, the storage water level of the water conservancy project will rise, resulting in the rise of the soaking line in the flood season may be higher than the designed soaking line, which will lead to an increase in the permeability coefficient of the dam body, and then the leakage of the dam body will occur. As a result, the leakage phenomenon caused by cracks in the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/27C04B111/20C04B111/72
CPCC04B28/06C04B2201/50C04B2111/27C04B2111/20C04B2111/72C04B7/02C04B14/106C04B14/14C04B14/042C04B22/066C04B24/124C04B24/08C04B22/08C04B2103/302C04B2103/50C04B2103/65C04B2103/10C04B22/06
Inventor 朱艳超于宗敏李鹏申盛伟徐逸凡
Owner HUBEI UNIV
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