CN107500690A - The quick concrete that is open to traffic of cement concrete pavement pit reparation - Google Patents
The quick concrete that is open to traffic of cement concrete pavement pit reparation Download PDFInfo
- Publication number
- CN107500690A CN107500690A CN201710837632.7A CN201710837632A CN107500690A CN 107500690 A CN107500690 A CN 107500690A CN 201710837632 A CN201710837632 A CN 201710837632A CN 107500690 A CN107500690 A CN 107500690A
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- Prior art keywords
- cement
- concrete
- traffic
- open
- quick
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Abstract
It is made up of the invention discloses a kind of cement concrete pavement pit reparation with the quick concrete that is open to traffic, the concrete the following raw material of special ratios：Sand, rubble, water, polycarboxylate water-reducer, compound additive in complex cement, wearability.Wherein, it is modified with inorganic cement based cementitious material, not only avoid the problem of bituminous concrete repair materials are costly, repairing effect is poor, and solves the problems, such as that portland cement concrete setting rate is slow, the time that suspends traffic is long, later strength retraction.By adding C in P.S42.5 cement2S lifts late strength of concrete, by compound additive shortens the induction period of hydrated cementitious and setting time, and realizes that early strength is high, it is controllable to condense firm time.Cement concrete pavement pit reparation is carried out using the present invention, the quick requirement that is open to traffic such as 2h, 5h, 12h can be met, to realizing that the inexpensive and fast quick-recovery of maintenance of surface is open to traffic with important value.
Description
Technical field
The invention belongs to cement concrete pavement maintenance repairing technique field, more particularly to a kind of cement concrete pavement hole
The quick concrete that is open to traffic of groove reparation.
Background technology
Cement concrete pavement is the primary structure form of China's road network and express highway pavement, is had inexpensive, strong
Spend the features such as high.However, with the development of domestic economy and the increase of Heavy Traffic amount, most of concrete in operation all go out
All kinds of diseases are showed, wherein road deck pit class disease is a kind of important Damage Types therein.At present, for pit class disease
Harmful reparation is mainly carried out using asphalt, but there is boundary with this kind of inorganic material of cement concrete due to organic material
Face imperfect bonding, deformation problem, and repaiied because asphalt is strong to the sensitiveness of water, therefore with asphalt
Multiple pit, it will completely destroy within 3-4 months after repair, cause the outstanding problem that maintenance costs is high, repairing effect is poor；And
Repaired according to normal concrete, because firm time and curing time are grown, cause the time of interruption of communication also long.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of cost is low, effect is good, durability and wearability are good, hardening is fast
The quick concrete that is open to traffic of fast and controllable cement concrete pavement pit reparation.
In order to solve the above technical problems, the present invention uses following technical scheme：
The reparation of cement concrete pavement pit is formed with the quick concrete that is open to traffic, raw material by following percentage：Complex cement
19%th, sand 29%-31% in wearability, rubble 44%-46%, water 6%-6.6%, polycarboxylate water-reducer 0.19%, compound outer
Add agent is micro to mix outside；Compound additive is made up of compound agent of regulating coagulating and early strength agent, and compound agent of regulating coagulating accounts for complex cement weight
0%-0.2%, early strength agent account for the 0-0.06% of complex cement weight.
Complex cement is C2S is modified sulphate aluminium cement R.S42.5, wherein C2S volumes are 4.8%, with sulphate aluminium cement
Weight ratio is 1: 3.
Sand is made up of river sand and slag in mass ratio 10: 1 in wearability.
The sand coarse aggregate ratio of the concrete is between 38%-42%.
Ballast grain sizes are between 3-20mm.
Compound agent of regulating coagulating be weight ratio be 2: 1: 3 sodium citrate, sodium gluconate, the mixture of boric acid, early strength agent is
Lithium chloride.
The problem of existing for existing Cement Concrete Pavement Reconstruction, inventor have developed a kind of cement concrete pavement hole
Groove reparation is made up of with the quick concrete that is open to traffic, the concrete the following raw material of special ratios：In complex cement, wearability
Sand, rubble, water, polycarboxylate water-reducer, compound additive.Wherein, it is modified with inorganic cement based cementitious material, is not only avoided
The problem of bituminous concrete repair materials are costly, repairing effect is poor, and solve portland cement concrete setting rate
Slowly, suspend traffic time long, later strength retraction the problem of.By adding C in P.S42.5 cement2S is come after lifting concrete
Phase intensity, the induction period of hydrated cementitious and setting time are shortened by compound additive, and realize early strength height, condense
Firm time is controllable.Cement concrete pavement pit reparation is carried out using the present invention, can meet that 2h, 5h, 12h etc. are quickly open to traffic
It is required that to realizing that the inexpensive and fast quick-recovery of maintenance of surface is open to traffic with important value.
Embodiment
Embodiment
Basic recipe：Sand 710kg, rubble (gravelstone 362kg great Shi 760kg), poly- carboxylic in complex cement 450kg, wearability
Sour water reducer 4.5kg, compound additive 0.09-1.12kg, water 153kg.Wherein,
Complex cement is C2S is modified sulphate aluminium cement R.S42.5 (Guangxi cloud swallow board), C2S volumes are 4.8%, with sulphur aluminium
Acid salt cement weight ratio is 1: 3.
Sand is made up of river sand (Xinlong sand field river sand II areas sand) and slag in mass ratio 10: 1 in wearability.
The sand coarse aggregate ratio of the concrete is carried out between 38%-42%, according to the real work of concrete in the range of sand coarse aggregate ratio
Fine setting.
Rubble (Guangxi richness reaches stone field) includes two grades of rubbles, and gravelstone is in 4.75-9.5mm, and great Shi is in 9.5-19mm.
(the TKA-2 type polycarboxylate water-reducers of Chongqing Tong Ke building materials Co., Ltd production, water-reducing rate are more than polycarboxylate water-reducer
25%) cement weight is accounted for as 1%.
Compound additive is made up of compound agent of regulating coagulating and early strength agent, and compound agent of regulating coagulating accounts for the 0%- of complex cement weight
0.2%, early strength agent accounts for the 0-0.06% of complex cement weight.
Compound agent of regulating coagulating (Suzhou Shen Dou Fine Chemical Co., Ltd) be weight ratio be 2: 1: 3 sodium citrate, glucose
The mixture of sour sodium, boric acid, early strength agent are lithium chloride (Sichuan state lithium).
More than formula the reparation of cement concrete pavement pit be quickly open to traffic concrete firm time 20 minutes with
Interior, 2h compression strength is 30Mpa, and 12h bending tensile strengths are 4.5MPa, and 28 days intensity compression strength is 50MPa, curved drawing
Intensity is 5.0MPa, far above normal concrete.And the concrete mixture is easy for construction, can be stirred using manual site
Mix, without vibrating.According to the time requirement of open to traffic, by controlling compound agent of regulating coagulating and lithium chloride to match, can be achieved 2h,
5h, 12h open to traffic (table 1-3).
12 hours open to traffic of table
| Environment temperature | Lithium chloride | Compound agent of regulating coagulating | Can the engineering time |
| 25 DEG C of ＞ | 0.04%-0.06% | 0.05%-0.2% | 10±2mim |
| 10 DEG C~25 DEG C | 0.04%-0.06% | 0-0.05% | 10±2min |
| 0 DEG C~10 DEG C | 0.04%-0.06% | 0 | 10±2min |
25 hours open to traffic of table
| Environment temperature | Lithium chloride | Compound agent of regulating coagulating | Can the engineering time |
| 25 DEG C of ＞ | 0.00%-0.02% | 0.05%-0.1% | 20±5min |
| 10 DEG C~25 DEG C | 0.01%-0.02% | 0-0.05% | 20±5min |
| 0 DEG C~10 DEG C | 0.03%-0.05% | 0 | 20±5min |
3 12 hours open to traffic of table
| Environment temperature | Lithium chloride | Compound agent of regulating coagulating | Can the engineering time |
| 25 DEG C of ＞ | 0 | 0-0.05% | 40±10min |
| 10 DEG C~25 DEG C | 0.00%-0.02% | 0-0.05% | 40±10min |
| 0 DEG C~10 DEG C | 0.02%-0.04% | 0 | 40±10min |
Above-mentioned pit reparation is applied to damaged road surface with the quick concrete that is open to traffic, has run so far 1 year or so, has used effect
Fruit is still fine, is firmly bonded, is damaged without deformation.
Claims (6)
1. the quick concrete that is open to traffic of a kind of cement concrete pavement pit reparation, it is characterised in that following percentage is pressed by raw material
Composition：Sand 29%-31%, rubble 44%-46%, water 6%-6.6%, polycarboxylate water-reducer in complex cement 19%, wearability
0.19%th, compound additive is micro mixes outside；The compound additive is made up of compound agent of regulating coagulating and early strength agent, and compound agent of regulating coagulating accounts for
The 0%-0.2% of complex cement weight, early strength agent account for the 0-0.06% of complex cement weight.
2. the quick concrete that is open to traffic of cement concrete pavement pit reparation according to claim 1, it is characterised in that：Institute
It is C to state complex cement2S is modified sulphate aluminium cement R.S42.5, wherein C2S volumes are 4.8%, with sulphate aluminium cement weight ratio
For 1: 3.
3. the quick concrete that is open to traffic of cement concrete pavement pit reparation according to claim 1, it is characterised in that：Institute
Sand in wearability is stated to be made up of river sand and slag in mass ratio 10: 1.
4. the quick concrete that is open to traffic of cement concrete pavement pit reparation according to claim 1, it is characterised in that should
The sand coarse aggregate ratio of concrete is between 38%-42%.
5. the quick concrete that is open to traffic of cement concrete pavement pit reparation according to claim 1, it is characterised in that：Institute
Ballast grain sizes are stated between 3-20mm.
6. the quick concrete that is open to traffic of cement concrete pavement pit reparation according to claim 1, it is characterised in that：Institute
State compound agent of regulating coagulating be weight ratio be 2: 1: 3 sodium citrate, sodium gluconate, the mixture of boric acid, early strength agent is lithium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710837632.7A CN107500690B (en) | 2017-09-15 | 2017-09-15 | Quick traffic concrete for repairing cement concrete pavement pit slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710837632.7A CN107500690B (en) | 2017-09-15 | 2017-09-15 | Quick traffic concrete for repairing cement concrete pavement pit slot |
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| Publication Number | Publication Date |
|---|---|
| CN107500690A true CN107500690A (en) | 2017-12-22 |
| CN107500690B CN107500690B (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710837632.7A Active CN107500690B (en) | 2017-09-15 | 2017-09-15 | Quick traffic concrete for repairing cement concrete pavement pit slot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734370A (en) * | 2019-03-14 | 2019-05-10 | 招商局重庆交通科研设计院有限公司 | A kind of cement concrete repair materials and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110297047A1 (en) * | 2010-05-07 | 2011-12-08 | Rice Edward K | Fast setting low permeability cement and concrete |
| CN102503322A (en) * | 2011-10-27 | 2012-06-20 | 北京东方雨虹防水技术股份有限公司 | Preparation method for material capable of being used for rapid rush-repair of roads |
| CN103360001A (en) * | 2013-07-10 | 2013-10-23 | 中交公路养护工程技术有限公司 | Fast hardening early strength concrete for overall width repair of cement concrete pavement |
-
2017
- 2017-09-15 CN CN201710837632.7A patent/CN107500690B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110297047A1 (en) * | 2010-05-07 | 2011-12-08 | Rice Edward K | Fast setting low permeability cement and concrete |
| CN102503322A (en) * | 2011-10-27 | 2012-06-20 | 北京东方雨虹防水技术股份有限公司 | Preparation method for material capable of being used for rapid rush-repair of roads |
| CN103360001A (en) * | 2013-07-10 | 2013-10-23 | 中交公路养护工程技术有限公司 | Fast hardening early strength concrete for overall width repair of cement concrete pavement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734370A (en) * | 2019-03-14 | 2019-05-10 | 招商局重庆交通科研设计院有限公司 | A kind of cement concrete repair materials and preparation method thereof |
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| CN107500690B (en) | 2020-09-15 |
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Address after: No.6, Gaoxin 2nd Road, XiXiangTang District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Jiaoke Group Co.,Ltd. Address before: 530007 No. 6 hi-tech two road, XiXiangTang District, Nanning, the Guangxi Zhuang Autonomous Region Patentee before: GUANGXI TRANSPORTATION RESEARCH & CONSULTING Co.,Ltd. |
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