CN103224342A - Restoration material of pavement cement concrete slab bottom - Google Patents
Restoration material of pavement cement concrete slab bottom Download PDFInfo
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- CN103224342A CN103224342A CN201310141418XA CN201310141418A CN103224342A CN 103224342 A CN103224342 A CN 103224342A CN 201310141418X A CN201310141418X A CN 201310141418XA CN 201310141418 A CN201310141418 A CN 201310141418A CN 103224342 A CN103224342 A CN 103224342A
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Abstract
The invention provides a restoration material of pavement cement concrete slab bottom, which is composed of following ingredients by weight percent: water reducer 10-15%, plastic expanding agent 0.1-2%, middle and late stage expanding agent 20-50%, redispersible polymer powder 1-10% and mineral admixture 30-65%; the middle and late stage expanding agent is one of dihydrate gypsum and UEA type expanding agent or combination thereof. The cement grouting material with the restoration material has the characteristics of good stability, good toughness, strong adhesion stress and controllable volume deformation, especially the restoration of pavement cement concrete slab bottom by applying the cement grouting material with large water-binder ratio and general water reducer.
Description
Technical field
The present invention relates to the repair materials at the bottom of a kind of Cement Concrete Pavement Slab, belong to building material field.
Background technology
Cement concrete is one of manufactured construction materials that contemporary purposes is the widest, consumption is maximum.Damaging can appear in the life-time service process in concrete structure inevitably, particularly at the bottom of the plate of cement concrete pavement, often occurs coming to nothing, phenomenon such as purt mud.Usually, the cement concrete pavement bottom is a basic unit, mainly bears the vertical force of vehicular load, and surface layer stress is diffused into soil matrix.Therefore, basic level requirement has enough erosion resistibilities and non-deformability." highway road surface construction technique normalizing " (JTJ034-2000) in the intensity control of clear and definite high grade highway pavement cement stabilized macadam base material at 3-5MPa.Therefore, in selecting the cementation process material during repair materials, the performance that needs to consider repair materials more approaches base material, make repair materials satisfy occur at the bottom of the road deck cracking, damaged, come to nothing or can form a solid integral body with base material during purt mud phenomenon, guarantee stability, cohesive strength and the non-deformability of cementation process material volume.
At present, the commonly used cementation process material water-cement ratio of road pavement reparation is lower, generally below 0.33, can effectively control the cubic deformation at the bottom of the road deck, but can exist cementation process material intensity surplus capacity when basic unit is in the milk excessive, simultaneously the too high problem of water reducer cost that is mixed with in the grouting material.
Summary of the invention
Technical problem underlying solved by the invention, be to provide the repair materials at the bottom of a kind of Cement Concrete Pavement Slab, this repair materials can make the cementation process material have good stability, good toughness, cohesive force is strong and cubic deformation is controlled characteristics, especially can realize the reparation at the bottom of the cement and concrete pavement plate of cementation process material under big water-cement ratio and general water reducer are used.
The present invention also provides a kind of cementation process material that contains above-mentioned repair materials.
The invention provides the repair materials at the bottom of a kind of Cement Concrete Pavement Slab, form by following component by weight percentage: water reducer 10-15%, plastic expansion agent 0.1-2%, middle and later periods swelling agent 20-50%, redispersable latex powder 1-10%, mineral admixture 30-65%;
Described middle and later periods swelling agent is a kind of in dihydrate gypsum and the UEA type swelling agent or their combination.
Employed water reducer can be one or more in naphthalene water reducer, amino water reducer and the aliphatic water reducing agent in the repair materials of the present invention, do not do concrete qualification at this, so long as the water reducer that generally is usually used in the cement concrete all can use, as, powdery naphthalenesulfonate formaldehyde condensation compound, sulfamate etc.
Employed redispersable latex powder is a kind of in vinyl acetate-ethylene copolymerization compound latex powder and the acrylic latex powder etc. or their arbitrary combination in the repair materials of the present invention.
Employed mineral admixture mainly is an industrial solid castoff in the repair materials of the present invention, can be in limestone powder, slag powders and the flyash one or more.
The present invention also provides a kind of cementation process material of repairing at the bottom of the Cement Concrete Pavement Slab of being used for, and is made up of following component by weight percentage: repair materials 7-12%, water 25-28%, cement 60-67%; Wherein, the water-cement ratio of described cementation process material is 0.34-0.38.
Compared with prior art, the present invention has following beneficial effect:
1, repair materials provided by the invention can make the cementation process material have good stability, good toughness, cohesive force is strong and cubic deformation is controlled characteristics, can form a solid integral body with base material, reaches the purpose of repairing at the bottom of the Cement Concrete Pavement Slab.
2, cementation process material provided by the invention can be implemented in than the reparation at the bottom of the cement and concrete pavement plate under big water-cement ratio (0.34-0.38) and the general water reducer application.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment 1
Repair materials at the bottom of a kind of Cement Concrete Pavement Slab, percentage ratio is than being made up of following component by weight: powdery naphthalenesulfonate formaldehyde condensation compound 13%, vinyl acetate-ethylene copolymerization compound latex powder 5%, dihydrate gypsum 30%, plastic expansion agent 0.6%, limestone powder 51.4%.
Embodiment 2
Repair materials at the bottom of a kind of Cement Concrete Pavement Slab, percentage ratio is than being made up of following component by weight: powdery naphthalenesulfonate formaldehyde condensation compound 11.5%, acrylic latex powder 3%, UEA type swelling agent 15%, dihydrate gypsum 15%, plastic expansion agent 0.5%, limestone powder 55%.
Embodiment 3
Repair materials at the bottom of a kind of Cement Concrete Pavement Slab, percentage ratio is than being made up of following component by weight: sulfamate 13%, vinyl acetate-ethylene copolymerization compound latex powder 6%, UEA type swelling agent 10%, dihydrate gypsum 20%, plastic expansion agent 0.6%, slag powders 50.4%.
Embodiment 4
Repair materials at the bottom of a kind of Cement Concrete Pavement Slab, percentage ratio is than being made up of following component by weight: powdery naphthalenesulfonate formaldehyde condensation compound 13%, acrylic latex powder 6%, UEA type swelling agent 10%, dihydrate gypsum 20%, plastic expansion agent 0.6%, limestone powder 50.4%.
Embodiment 5
Repair materials at the bottom of a kind of Cement Concrete Pavement Slab, percentage ratio is than being made up of following component by weight: powdery naphthalenesulfonate formaldehyde condensation compound 13%, acrylic latex powder 8%, UEA type swelling agent 10%, dihydrate gypsum 20%, plastic expansion agent 0.6%, limestone powder 48.4%.
Embodiment 6
A kind of cementation process material of repairing at the bottom of the Cement Concrete Pavement Slab of being used for wherein is mixed with the repair materials of embodiment 1, is made up of following component by weight percentage: repair materials 9%, water 26%, cement 64%; Wherein, the water-cement ratio of described cementation process material is 0.36.
Embodiment 7
A kind of cementation process material of repairing at the bottom of the Cement Concrete Pavement Slab of being used for wherein is mixed with the repair materials of embodiment 2, is made up of following component by weight percentage: repair materials 7.5%, water 27.5%, cement 65%; Wherein, the water-cement ratio of described cementation process material is 0.38.
Embodiment 8
A kind of cementation process material of repairing at the bottom of the Cement Concrete Pavement Slab of being used for wherein is mixed with the repair materials of embodiment 3, is made up of following component by weight percentage: repair materials 8.5%, water 26.5%, cement 65%; Wherein, the water-cement ratio of described cementation process material is 0.36.
Embodiment 9
A kind of cementation process material of repairing at the bottom of the Cement Concrete Pavement Slab of being used for wherein is mixed with the repair materials of embodiment 4, is made up of following component by weight percentage: repair materials 9%, water 25.5%, cement 65.5%; Wherein, the water-cement ratio of described cementation process material is 0.34.
Embodiment 10
A kind of cementation process material of repairing at the bottom of the Cement Concrete Pavement Slab of being used for wherein is mixed with the repair materials of embodiment 5, is made up of following component by weight percentage: repair materials 7%, water 27%, cement 66%; Wherein, the water-cement ratio of described cementation process material is 0.37.
After according to the prescription of the foregoing description 6-10 each component being mixed, promptly obtain being mixed with the cementation process material of embodiment 1-5 repair materials, every physical index of this cementation process material is as shown in table 1:
Every physical index of table 1 cementation process material
As shown in Table 1:
1) embodiment 6-10 cementation process material, even under the bigger situation of water cement ratio (0.34-0.38), the intensity surplus capacity of its cementation process material is still very big.
2) degree of mobilization of embodiment 6-10 cementation process material all is controlled between the 20-25S, can satisfy dabbling requirement at the bottom of the Cement Concrete Pavement Slab.
3) 3h of embodiment 6-10 cementation process material, 24h degree of free swelling be all more than 0.1%, can play filling effect at the bottom of the reasonable plate.
4) the pressure bleeding rate of embodiment 6-10 cementation process material can satisfy the perfusion homogeneity requirement of cementation process material under pressure substantially all less than 3.5%.
5) requirement that can satisfy the construction aspect time of coagulation of embodiment 6-10 cementation process material.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (5)
1. the repair materials at the bottom of the Cement Concrete Pavement Slab is characterized in that, is made up of following component by weight percentage: water reducer 10-15%, plastic expansion agent 0.1-2%, middle and later periods swelling agent 20-50%, redispersable latex powder 1-10%, mineral admixture 30-65%;
Described middle and later periods swelling agent is a kind of in dihydrate gypsum and the UEA type swelling agent or their combination.
2. repair materials according to claim 1 is characterized in that, described water reducer is one or more in naphthalene water reducer, amino water reducer and the aliphatic water reducing agent.
3. repair materials according to claim 1 is characterized in that, described redispersable latex powder is a kind of of vinyl acetate-ethylene copolymerization compound latex powder and acrylic latex powder or their combination.
4. repair materials according to claim 1 is characterized in that described mineral admixture comprises one or more in limestone powder, slag powders and the flyash.
5. one kind is used for the cementation process material repaired at the bottom of the Cement Concrete Pavement Slab, it is characterized in that, is made up of following component by weight percentage: as each described repair materials 7-12% among the claim 1-4, water 25-28%, cement 60-67%; Wherein, the water-cement ratio of described cementation process material is 0.34-0.38.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141418.XA CN103224342B (en) | 2013-04-22 | 2013-04-22 | A kind of repair materials of Identification Beneath Concrete Slabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141418.XA CN103224342B (en) | 2013-04-22 | 2013-04-22 | A kind of repair materials of Identification Beneath Concrete Slabs |
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| Publication Number | Publication Date |
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| CN103224342A true CN103224342A (en) | 2013-07-31 |
| CN103224342B CN103224342B (en) | 2015-09-16 |
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| CN201310141418.XA Expired - Fee Related CN103224342B (en) | 2013-04-22 | 2013-04-22 | A kind of repair materials of Identification Beneath Concrete Slabs |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107879654A (en) * | 2017-11-27 | 2018-04-06 | 黎芷杉 | A kind of special swelling agent of traffic engineering and its production method |
| CN107902940A (en) * | 2017-11-27 | 2018-04-13 | 黎芷杉 | A kind of prestress pipe swelling agent and its production method |
| CN112299764A (en) * | 2020-11-03 | 2021-02-02 | 中冶建工集团有限公司 | Steel bar sleeve grouting material containing copper tailing sand and proportion setting method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157529A (en) * | 2007-08-02 | 2008-04-09 | 铁道科学研究院铁道建筑研究所 | High-performance cement-based shrink-free corrosion-proof grouting agent |
| CN102092997A (en) * | 2010-12-02 | 2011-06-15 | 上海城建（集团）公司 | Prestressed concrete pipe grouting agent |
| CN102234189A (en) * | 2010-05-06 | 2011-11-09 | 中冶建筑研究总院有限公司 | High-strength cement-based damping grouting material |
| CN102992722A (en) * | 2012-12-14 | 2013-03-27 | 武汉理工大学 | Ultrahigh-strength grouting material based on iron tailing sand and cement and preparation method of grouting material |
-
2013
- 2013-04-22 CN CN201310141418.XA patent/CN103224342B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157529A (en) * | 2007-08-02 | 2008-04-09 | 铁道科学研究院铁道建筑研究所 | High-performance cement-based shrink-free corrosion-proof grouting agent |
| CN102234189A (en) * | 2010-05-06 | 2011-11-09 | 中冶建筑研究总院有限公司 | High-strength cement-based damping grouting material |
| CN102092997A (en) * | 2010-12-02 | 2011-06-15 | 上海城建（集团）公司 | Prestressed concrete pipe grouting agent |
| CN102992722A (en) * | 2012-12-14 | 2013-03-27 | 武汉理工大学 | Ultrahigh-strength grouting material based on iron tailing sand and cement and preparation method of grouting material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107879654A (en) * | 2017-11-27 | 2018-04-06 | 黎芷杉 | A kind of special swelling agent of traffic engineering and its production method |
| CN107902940A (en) * | 2017-11-27 | 2018-04-13 | 黎芷杉 | A kind of prestress pipe swelling agent and its production method |
| CN112299764A (en) * | 2020-11-03 | 2021-02-02 | 中冶建工集团有限公司 | Steel bar sleeve grouting material containing copper tailing sand and proportion setting method thereof |
| CN112299764B (en) * | 2020-11-03 | 2022-03-01 | 中冶建工集团有限公司 | Steel bar sleeve grouting material containing copper tailing sand and proportion setting method thereof |
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| CN103224342B (en) | 2015-09-16 |
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Effective date of registration: 20160812 Address after: 010010 3 Xinhua Street, Inner Mongolia, Hohhot Patentee after: Inner Mongolia Traffic Design & Research Institute Co Ltd Address before: 100088 Beijing city Haidian District Xitucheng Road No. 8 Patentee before: Research Institute of Highway Ministry of Transport |
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Granted publication date: 20150916 Termination date: 20180422 |
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