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Hydraulic concrete surface layer slit sealing method

A technology for hydraulic concrete and closed treatment, applied in water conservancy projects, marine engineering, construction and other directions, can solve the problems of poor adhesion of concrete on both sides, threat to project operation, and difficult construction, and achieve good plasticity retention and convenient construction. , good durability

Inactive Publication Date: 2012-10-03
吉林省银河水利水电新技术设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a sealing treatment method for hydraulic concrete surface cuts to solve the problems of high price, high construction requirements, greater difficulty in construction in the case of water, and adhesion to the concrete on both sides in the process of hydraulic concrete engineering crack treatment. If the knot is not good, there will still be cracks, which still pose a threat to the operation of the project

Method used

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  • Hydraulic concrete surface layer slit sealing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prescription: the weight and number ratio of each component is:

[0033] Universal Portland cement PO42.5 1000g,

[0034] Medium coarse sand 1100g,

[0035] 300g of water,

[0036] The composite material comprises the following raw materials in parts by weight:

[0037] Polycarboxylate superplasticizer 8g,

[0038] Cement waterproofing agent 20g,

[0039] Mortar Companion: Mortar rheological additive BANAQUA4000 2g,

[0040] Redispersible latex powder 1.5g;

[0041] method:

[0042] (1) Concrete surface crack cutting, the cutting width is 5cm, and the cutting depth is 5cm;

[0043] (2) Clean the base surface of concrete cracks, remove all gravel, dust and impurities in the groove, soak and rinse with clean water, and blow dry with a fan to achieve water retention inside the old concrete base material, dry outside surface, and no excess water on the joint surface. Then carry out the perfusion of the slit treatment material;

[0044] (3) Configure the compound ma...

Embodiment 2

[0046] Prescription: the weight and number ratio of each component is:

[0047] Universal Portland cement PO42.5 1200g,

[0048] Medium coarse sand 1560g,

[0049] Guazi stone, particle size 0.5cm 300g,

[0050] 330g of water,

[0051] The composite material comprises the following raw materials in parts by weight:

[0052] Polycarboxylate superplasticizer 12g,

[0053] Cement waterproofing agent 25g,

[0054] Low viscosity thickening plasticizer, viscosity 75cps 2g,

[0055] Mortar Companion: Mortar rheological additive BANAQUA4000 8g,

[0056] Redispersible latex powder SWF-05 8g;

[0057] method:

[0058] (1) Concrete surface crack cutting, the cutting width is 8cm, and the cutting depth is 8cm;

[0059] (2) Clean the base surface of concrete cracks, remove all gravel, dust and impurities in the groove, soak and rinse with clean water, and blow dry with a fan to achieve water retention inside the old concrete base material, dry outside surface, and no excess water ...

Embodiment 3

[0062] Prescription: the weight and number ratio of each component is:

[0063] Universal Portland cement PO42.5 1400g,

[0064] Medium coarse sand 2000g,

[0065] Guazi stone, particle size 1cm 600g,

[0066] 300g of water,

[0067] The composite material comprises the following raw materials in parts by weight:

[0068] Polycarboxylate superplasticizer 15g,

[0069] Cement waterproofing agent 30g,

[0070] Low viscosity thickening plasticizer, viscosity 100cps 5g,

[0071]Mortar Companion, Mortar Rheology Additive BANAQUA4000 15g,

[0072] Redispersible latex powder SWF-05 15g;

[0073] method:

[0074] (1) Concrete surface crack cutting, the cutting width is 10cm, and the cutting depth is 10cm;

[0075] (2) Clean the base surface of concrete cracks, remove all gravel, dust and impurities in the groove, soak and rinse with clean water, and blow dry with a fan to achieve water retention inside the old concrete base material, dry outside surface, and no excess water o...

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Abstract

The invention relates to a hydraulic concrete surface layer slit sealing method belonging to a hydraulic concrete slit sealing method and comprising the following formula method: the formula contains 1000-1400 parts of general purpose portland cement PO42.5, 1100-2000 parts of medium coarse sand, 0-600 parts of chicken girt, 300-360 parts of water and a composite material; the method comprises the following steps of: (1) cutting a concrete surface layer crack; (2) cleaning the base surface of the concrete crack; and (3) preparing the composite material in the proportion of the formula, stirring the composite material with cement, the medium coarse sand and the water for 3 min at the stirring speed of 2000-2500R / min to form a cement gel material, and then pouring the cement gel material into slits. The invention is suitable for hydraulic concrete dam face slit treatment with better effect.

Description

technical field [0001] The invention belongs to a sealing treatment method for hydraulic concrete slits. Background technique [0002] At present, there are large cracks in the face protection concrete of many reservoir dams in Jilin Province. The reason for the cracks is that our province is located in the seasonally frozen soil area, and the temperature difference is large. After the dam concrete is poured, cracks are often caused by the large temperature difference, and the cracks have a great impact on the safety of the reservoir project. [0003] Since cracks in hydraulic concrete engineering have a great impact on leakage and engineering durability, the effect of sealing the joints directly affects the performance of the engineering. Conventional treatment methods cannot effectively solve this problem, and special treatment technologies are necessary. The project requires that the material for cutting joints should have a good bonding effect with the old concrete, suf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/16C04B28/04
Inventor 郑铎周继元杨金良李佳超
Owner 吉林省银河水利水电新技术设计有限公司
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