CN1559970A - Cement-base material for repairing crack of bridge - Google Patents

Cement-base material for repairing crack of bridge Download PDF

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Publication number
CN1559970A
CN1559970A CNA2004100167364A CN200410016736A CN1559970A CN 1559970 A CN1559970 A CN 1559970A CN A2004100167364 A CNA2004100167364 A CN A2004100167364A CN 200410016736 A CN200410016736 A CN 200410016736A CN 1559970 A CN1559970 A CN 1559970A
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cement
water
bridge
concrete
patching material
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CNA2004100167364A
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CN1326797C (en
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孙振平
蒋正武
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Tongji University
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Tongji University
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Abstract

The invention relates to a cement-based materialfor repairing crack of bridge, composed of Portland cement series, high alumina cement, fibrin, polyvinyl acetate latex powder, water reducer, sulphoaluminate sweller, polypropylene fibre and quartz sand. It can very efficiently repair the cracks of bridge-surface concrete caused by various reasons, thus improving wearability, flexibility, shock resistance, anti-permeability, resistance to corrosiveness of chemical substances, and carbonizing resistance of the concrete by a large margin, and prolonging the service life of the bridge-surface concrete. It is applied to repair the cracks of concrete bridge surfaces, concrete road surfaces, and other engineering.

Description

A kind of cement based deck crack patching material
Technical field
The invention belongs to building material technical field, be specifically related to a kind of cement based deck crack patching material.
Background technology
Bridge floor belongs to the large-scale sheet concrete structure, behind the bridge deck concrete casting and constructing, if do not note maintenance, very easily produces the plastic cracking phenomenon, also can cause cracking because of a variety of causes in the use.A certain proportion of reinforcing bar is mostly prepared in concrete bridge deck inside, and fissured existence will make the very fast corrosion of inner reinforcing bar, produces to expand, and causes the crack to further expand.In addition, because fissured existence, not only rainwater, water of condensation infiltrate easily, and more fearful be, extraneous corrosive medium all can cause producing chemical erosion along with liquid, vapour infiltrate bridge deck concrete inside as acid, alkali, salt, bridge deck concrete intensity and bearing capacity reduce, the volume stability variation.Sometimes after the bridge deck concrete of water-filling is subjected to freeze-thaw cycle destruction, can cause that the crack further enlarges, even the structural entity spalling.These consequences are very large to the influence in concrete bridge deck bearing capacity and life-span.Yet the past does not have the special-purpose patching material of concrete bridge deck, reaches to a certain degree when bridge deck concrete destroys, and in the time of can not continuing to be on active service, often will stop traffic, and whole decking are changed, and it is current that this has not only seriously limited traffic, and economic cost is very high.
At present, the bridge construction in the Shanghai and even the whole nation is just welcoming the situation of growth at full speed, and the badly damaged and reparation problem of old bridge floor is just put in face of people.Therefore, develop can Efficient software patching deck crack, and cohesiveness, all very good special-purpose patching material of deck crack of wear resistance to improving the bridge floor use properties and prolonging the bridge floor life-span, seem particularly necessary.
Summary of the invention
The object of the present invention is to provide a kind of cement based deck crack patching material that can effectively repair to the bridge deck concrete crack.
A kind of cement based deck crack patching material that the present invention proposes, be made up of silicate series cement, high-alumina cement, Mierocrystalline cellulose, polyvinyl acetate (PVA) latex powder, water reducer, aluminium sulfate expanding agent, polypropylene fibre, quartz sand, the weight ratio of each component is:
Silicate series cement 100
High-alumina cement 2-45
Mierocrystalline cellulose 0.02-0.5
Polyvinyl acetate (PVA) latex powder 0.5-7
Water reducer 0.2-3
Aluminium sulfate expanding agent 1-12
Polypropylene fibre 0.5-5
0-2mm quartz sand 30-190
The preferable weight ratio of each component is:
Silicic acid series cement 100
High-alumina cement 5-35
Mierocrystalline cellulose 0.1-0.3
Polyvinyl acetate (PVA) latex powder 1-6
Water reducer 0.3-2
Aluminium sulfate expanding agent 2-9
Polypropylene fibre 0.5-2
0-2mm quartz sand 50-170
Among the present invention, silicate series cement is a kind of in silicate cement, ordinary Portland cement, slag cement, trass cement, pulverized fuel ash cement and the complex cement.
Among the present invention, water reducer is the naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent, sulfamate high-effective water-reducing agent, melamine high-efficiency water-reducing agent, polycarboxylate high-efficiency water reducing agent a kind of.
Preparation method of the present invention is: by aforementioned each part by weight weighing each component, eight kinds of raw materials are mixed by physical mechanical, stir, promptly obtain this product.
Hydration reaction behind the blunge, takes place as inorganic coagulation material in mesosilicic acid salt series cement of the present invention, produces hydrated product, and the sclerosis back produces intensity, and can bond with bridge deck concrete and sides of fracture, forms whole.Behind the high-alumina cement blunge, can very fast generation hydration reaction, and impel in the patching material short period of time setting and harden and set up intensity.Mierocrystalline cellulose is as the water-keeping thickening component, its role is to can be in cement slurry swelling, produce the bridging effect, and cement granules and quartz sand, polypropylene fibre linked together by the molecular adsorption effect, avoid particles settling; When slurry flows, guarantee that slurry becomes integral body, do not produce excreting water phenomenon; Cellulosic effect is also to prevent in the slurry that moisture is absorbed or excessive vaporization by sides of fracture and bridge deck concrete basic unit, thereby plays good in the maintenance effect.The polyvinyl acetate (PVA) latex powder becomes emulsion after meeting water, can not only increase the stability of slurry, and in the slurry process of setting, the dry gradually dehydration of emulsion, the Vinyl Acetate Copolymer ester molecule interconnects, and forms one deck macromolecule membranous layer, strengthens the toughness and the shock resistance of hardened paste.Water reducer has dissemination to cement slurry, can strengthen the flowability of slurry, makes slurry more successfully infiltrate micro-cracks, reaches effective crack and repairs purpose.Aluminium sulfate expanding agent participates in the aquation of cement, produces expanded product, and the formation of expanded product and the volumetric shrinkage that expands and can compensative material produce make material volume stable.Polypropylene fibre is dispersed in patching material inside, increases substantially the folding strength of patching material, improves toughness, shock resistance and wear resistance.The effect of quartz sand is that tightly packed back provides rigid backbone for patching material, and cement slurry is filled in this rigid backbone, and its adhesive-hardening is become a high-strength integral body.
The present invention is a grey dry powder particulate matter, and during use, suitable amount of water is the 12%-45% of dry powder granulated material weight, and concrete amount of water is determined by test according to making patching material reach required flowability.
The present invention is to the effect of inside concrete reinforcing bar non-corroding, and repair in the crack that is widely used in concrete bridge deck.
The present invention uses as the concrete bridge deck crack patching material, can effectively infiltrate distress in concrete inside, and mending concrete bridge floor, have excellent flowability and water-retentivity, setting and harden speed is fast, and the bonding strength height of product sclerosis back and crackle two walls and bridge deck concrete basic unit has compensate for shrinkage, toughness, shock resistance and wear resistance preferably, high temperature resistant strong with the freeze-thawing resistant circulation ability, excellent in te pins of durability.The present invention is easy to use, water-retentivity, mobile splendid, and setting and harden and strength development speed are fast, and is high temperature resistant, the freeze-thawing resistant cyclicity is all fine with crack and bridge deck concrete cohesive strength height, and have certain micro-expansibility, shock resistance, excellent in abrasion resistance.
Embodiment
Embodiment 1, cement based deck crack patching material is pressed ordinary Portland cement 39.14%, high-alumina cement 5.87%, Mierocrystalline cellulose 0.08%, polyvinyl acetate (PVA) latex powder 1.18%, naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent 0.27%, aluminium sulfate expanding agent 2.35%, polypropylene fibre 0.23%, (0-2mm) 50.88% is formulated for quartz sand.After water that adding accounts for dry powder grain material weight 16% stirs, the product degree of mobilization can reach 200mm, presetting period 40min, final setting time 65min, sclerosis back 28d ultimate compression strength reaches 41MPa, folding strength reaches 8.8MPa, and bonding tensile strength reaches 4.1MPa, and the ultimate compression strength reduced rate is 0% behind 7 freeze-thaw cycle.
Embodiment 2, cement based deck crack patching material is pressed slag cement 42.66%, high-alumina cement 8.53%, Mierocrystalline cellulose 0.13%, polyvinyl acetate (PVA) latex powder 2.13%, sulfamate high-effective water-reducing agent 0.34%, aluminium sulfate expanding agent 3.00%, polypropylene fibre 0.55%, (0-2mm) 42.66% is formulated for quartz sand.After water that adding accounts for dry powder grain material weight 15% stirs, the product degree of mobilization can reach 250mm, presetting period 25min, final setting time 38min, sclerosis back 28d ultimate compression strength reaches 40MPa, folding strength reaches 10.1MPa, and bonding tensile strength reaches 4.9MPa, and the ultimate compression strength reduced rate is 0% behind 50 freeze-thaw cycle.
Embodiment 3, cement based deck crack patching material is pressed complex cement 31.66%, high-alumina cement 11.08%, Mierocrystalline cellulose 0.0158%, polyvinyl acetate (PVA) latex powder 1.9%, naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent 0.7912%, aluminium sulfate expanding agent 3.17%, polypropylene fibre 1.42%, (0-2mm) 49.963% is formulated for quartz sand.After water that adding accounts for dry powder grain material weight 36% stirs, the product degree of mobilization can reach 180mm, presetting period 36min, final setting time 65min, sclerosis back 28d ultimate compression strength reaches 38MPa, folding strength reaches 8.2MPa, and bonding tensile strength reaches 3.9MPa, and the ultimate compression strength reduced rate is 0% behind 7 freeze-thaw cycle.

Claims (5)

1, a kind of cement based deck crack patching material is characterized in that by silicate series cement, high-alumina cement, and Mierocrystalline cellulose, the polyvinyl acetate (PVA) latex powder, water reducer, aluminium sulfate expanding agent, polypropylene fibre, quartz sand is formed, and the weight ratio of each component is:
Silicate series cement 100
High-alumina cement 2-45
Mierocrystalline cellulose 0.02-0.5
Polyvinyl acetate (PVA) latex powder 0.5-7
Water reducer 0.2-3
Aluminium sulfate expanding agent 1-12
Polypropylene fibre 0.5-5
0-2mm quartz sand 30-190.
2, cement based deck crack patching material according to claim 1 is characterized in that the each component weight ratio is:
Silicate series cement 100
High-alumina cement 5-35
Mierocrystalline cellulose 0.1-0.3
Polyvinyl acetate (PVA) latex powder 1-6
Water reducer 0.3-2
Aluminium sulfate expanding agent 2-9
Polypropylene fibre 0.5-2
0-2mm quartz sand 50-170.
3, cement based deck crack patching material according to claim 1 is characterized in that silicate series cement is a kind of of silicate cement, ordinary Portland cement, slag cement, trass cement, pulverized fuel ash cement and complex cement.
4, cement based deck crack patching material according to claim 1 is characterized in that water reducer is the naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent, sulfamate high-effective water-reducing agent, melamine high-efficiency water-reducing agent, polycarboxylate high-efficiency water reducing agent a kind of.
5, a kind of using method of the deck crack of cement based according to claim 1 patching material is characterized in that adding the water of this material weight 12-45%, stirs.
CNB2004100167364A 2004-03-04 2004-03-04 Cement-base material for repairing crack of bridge Expired - Fee Related CN1326797C (en)

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CN1326797C CN1326797C (en) 2007-07-18

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1325424C (en) * 2005-01-11 2007-07-11 桂永全 Rapid repairing materials for ultrathin layer on the surface of road and airfield runway
CN100396638C (en) * 2006-05-24 2008-06-25 陈炎平 Concrete additive, its preparing method and concrete made thereby
CN101172833B (en) * 2007-10-25 2010-10-13 王力强 Cement concrete surface renovating material
CN101913827A (en) * 2010-08-26 2010-12-15 卢建华 Waterproof and anti-corrosion repair mortar for polymer cement-based concrete structure
CN102167551A (en) * 2011-01-26 2011-08-31 蔡海军 Quick-dry strong organic hydraulic bonding material
CN102704367A (en) * 2012-07-02 2012-10-03 河南万里路桥集团有限公司 Road reflection crack welding material and construction process thereof
CN101633830B (en) * 2008-07-25 2012-11-07 上海宝冶工程技术有限公司 Waterproof sealing binding material and application thereof
CN103601441A (en) * 2013-10-31 2014-02-26 德高(广州)建材有限公司 Carbonization-resistant waterproof slurry
CN103771806A (en) * 2014-01-21 2014-05-07 厦门力嘉诚防水工程有限公司 Concrete crack repairing waterproof coating
CN104478371A (en) * 2014-11-12 2015-04-01 湖南省建筑工程集团总公司 Energy-saving type concrete crack repairing agent
CN104499395A (en) * 2014-12-30 2015-04-08 南通福伦利新材料有限公司 Quick repairing method of old cement concrete pavement
CN104591634A (en) * 2015-01-21 2015-05-06 中铁大桥局集团第二工程有限公司 Micro-expansion fiber reinforced concrete and preparation method thereof
CN104944872A (en) * 2015-06-18 2015-09-30 关其焕 Cement concrete pavement self-repair material and preparation method thereof
CN105967567A (en) * 2016-05-11 2016-09-28 北京中德新亚建筑技术有限公司 High-polymer quick structure repairing material special for bridge expansion joint and preparation method thereof
CN106542777A (en) * 2015-09-21 2017-03-29 韩先福 Material for road repair and its application
CN107265988A (en) * 2017-08-01 2017-10-20 福州皇家地坪有限公司 Fast-drying aqueous composite anti-penetrating boundary material
CN113354374A (en) * 2021-07-09 2021-09-07 成都高速公路建设开发有限公司 High-toughness quick-setting repair mortar and preparation method thereof
CN115108772A (en) * 2021-12-03 2022-09-27 林贵邻 Preparation method of anti-cracking impermeable concrete

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CN1303034C (en) * 2003-06-05 2007-03-07 同济大学 Quick repairing polymer cement base material and its preparing method

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1325424C (en) * 2005-01-11 2007-07-11 桂永全 Rapid repairing materials for ultrathin layer on the surface of road and airfield runway
CN100396638C (en) * 2006-05-24 2008-06-25 陈炎平 Concrete additive, its preparing method and concrete made thereby
CN101172833B (en) * 2007-10-25 2010-10-13 王力强 Cement concrete surface renovating material
CN101633830B (en) * 2008-07-25 2012-11-07 上海宝冶工程技术有限公司 Waterproof sealing binding material and application thereof
CN101913827A (en) * 2010-08-26 2010-12-15 卢建华 Waterproof and anti-corrosion repair mortar for polymer cement-based concrete structure
CN102167551A (en) * 2011-01-26 2011-08-31 蔡海军 Quick-dry strong organic hydraulic bonding material
CN102704367B (en) * 2012-07-02 2016-02-10 河南万里路桥集团有限公司 The construction technology of reflection cracking in a pavement welding material
CN102704367A (en) * 2012-07-02 2012-10-03 河南万里路桥集团有限公司 Road reflection crack welding material and construction process thereof
CN103601441B (en) * 2013-10-31 2015-07-15 派丽德高(上海)建材有限公司 Carbonization-resistant waterproof slurry
CN103601441A (en) * 2013-10-31 2014-02-26 德高(广州)建材有限公司 Carbonization-resistant waterproof slurry
WO2015062333A1 (en) * 2013-10-31 2015-05-07 德高(广州)建材有限公司 Anti-carbonation waterproof slurry
CN103771806A (en) * 2014-01-21 2014-05-07 厦门力嘉诚防水工程有限公司 Concrete crack repairing waterproof coating
CN104478371A (en) * 2014-11-12 2015-04-01 湖南省建筑工程集团总公司 Energy-saving type concrete crack repairing agent
CN104499395A (en) * 2014-12-30 2015-04-08 南通福伦利新材料有限公司 Quick repairing method of old cement concrete pavement
CN104591634A (en) * 2015-01-21 2015-05-06 中铁大桥局集团第二工程有限公司 Micro-expansion fiber reinforced concrete and preparation method thereof
CN104944872A (en) * 2015-06-18 2015-09-30 关其焕 Cement concrete pavement self-repair material and preparation method thereof
CN106542777A (en) * 2015-09-21 2017-03-29 韩先福 Material for road repair and its application
CN106542777B (en) * 2015-09-21 2019-05-28 韩先福 Material for road repair and its application
CN105967567A (en) * 2016-05-11 2016-09-28 北京中德新亚建筑技术有限公司 High-polymer quick structure repairing material special for bridge expansion joint and preparation method thereof
CN107265988A (en) * 2017-08-01 2017-10-20 福州皇家地坪有限公司 Fast-drying aqueous composite anti-penetrating boundary material
CN113354374A (en) * 2021-07-09 2021-09-07 成都高速公路建设开发有限公司 High-toughness quick-setting repair mortar and preparation method thereof
CN115108772A (en) * 2021-12-03 2022-09-27 林贵邻 Preparation method of anti-cracking impermeable concrete

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