CN102219437A - Cement concrete material for rapid repairing of road and preparation method thereof - Google Patents
Cement concrete material for rapid repairing of road and preparation method thereof Download PDFInfo
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- CN102219437A CN102219437A CN 201110120876 CN201110120876A CN102219437A CN 102219437 A CN102219437 A CN 102219437A CN 201110120876 CN201110120876 CN 201110120876 CN 201110120876 A CN201110120876 A CN 201110120876A CN 102219437 A CN102219437 A CN 102219437A
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Abstract
The invention discloses a cement concrete material for rapid repairing of road and a preparation method thereof. The repairing material comprises a plastic steel mending material for repairing a damaged pavement. The plastic steel mending material comprises, by weight, 6 to 10 parts of petroleum resin, 1.5 to 3.5 parts of an additive, 160 to 240 parts of stone, 2.5 to 5 parts of zinc sulfide white and 20 to 30 parts of a filler. The additive comprises, by weight, 2 to 10 parts of nonsaturated esters solvent naphtha, 0.5 to 2.5 parts of rubber elastomer, 2 to 10 parts of diesel oil and 0 to 0.2 part of an ultraviolet ray absorber. The repairing material further includes a base fluid which comprises, by weight, 5 to 11 parts of petroleum resin and 1.5 to 3.5 parts of an additive, wherein the additive comprises the same ingredients as the additive in the plastic steel mending material does. The repairing material provided in the invention has closer bonding and improved chelation with pot holes and a color similar to an original pavement, and enables a simpler construction.
Description
Technical field
The present invention relates to the Road maintenance material, be specifically related to a kind of cement concrete road fast repairing material and preparation method thereof.
Background technology
The concrete road road surface because of various factors causes hole, frequent appearance hole, collapse breakage defectives such as (gnawing) limit, hole groove, if untimely repairing, it will jeopardize driving and operation safety.Existing material for road repair commonly used has quick talking cement (is the patent of invention of CN1970491 as publication number), modifying asphalt (is the patent of invention of CN10193549 as publication number), epoxy resin daub (is the patent of invention of CN101121812 and CN101230244 as publication number) etc.Wherein, the inconvenience construction under the condition of rainy day of quick talking cement material maybe can not be constructed, and also needs the maintenance of a quiet time after the construction, can not in time be open to traffic; Modifying asphalt needs the scene to boil or mix, not only contaminate environment and engineering time are longer, in addition, also exist because of cohesiveness is strong, under the hot conditions easily trickling make the deficiency that peripheral road surface is polluted, color distinction is big, repair thin layer (in the 3cm) and can't carry out especially; Also there is the problem of curing time in the Resins, epoxy based patching material, and because of differing at temperature and stressed state between cement concrete and the Resins, epoxy soil, along with the growth of duration of service, comes off easily or produces new crack and crack; And the Resins, epoxy based patching material constructs after mostly being two components or two kinds of above proportionings mixing of component again, and the surplus material after the proportioning can not reclaim use, causes waste.
Summary of the invention
It is suitable and extremely strong to concrete and sandstone cohesive force that the technical problem to be solved in the present invention provides a kind of rigidity, can adapt to cement concrete road fast repairing material of road traffic STRESS VARIATION and temperature variation and preparation method thereof again.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
The cement concrete road fast repairing material comprises being used to fill up the firm native repair material of moulding of damaged road surface, describedly moulds firm native repair material and comprises following components in weight percentage:
Petroleum resin 6～10, additive 1.5～3.5, building stones 160～240, zinc sulfide white 2.5～5, stopping composition 20～30;
Wherein, described additive is made up of following components in weight percentage: unsaturated ester kind solvent oil 2～10, rubber elastomer 0.5～2.5, diesel oil 2～10, UV light absorber 0～0.2; Described rubber elastomer is polyhutadiene, SBS thermoplastic styrene butadiene rubber, SIS thermoplastic elastomer (styrene-isoprene-phenylethene triblock copolymer) or SEBS thermoplastic elastomer.
In the patching material of the present invention, the bonding that petroleum resin and superpolymer rubbery system provide, rock provides the skeleton of carrying, wear-resisting, antiskid, thereby forms the system of superpolymer rubbery system parcel rock; It is filled in the hole, hole of certain space, moulds firm native repair material under external force and atmospheric action, it forms " compacting body " gradually by the viscous body of the shape that looses, thus can carry, wear-resisting, antiskid; Simultaneously, this " compacting body " superpolymer rubbery system is the colloid of indefinite form, can change with the change in displacement in hole, hole, so promptly satisfied the functional requirement of carrying, wear-resisting, antiskid, satisfy the variation of cement concrete displacement, the temperature difference again, improved the work-ing life on road surface.
In the technique scheme,
Described stopping composition is made up of the following weight proportion raw material: basalt or diabase or granite powder (20～120 order) 4～6, silicate cement 4～6, calcium chloride (600～1000 order) 4～6, quartz sand (20～60 order) 8～12.
Described unsaturated ester kind solvent oil is methyl methacrylate, Jia Jibingxisuanyizhi or butyl methacrylate.
Described building stones are basalt or diabase or grouan, and particle diameter is 0.2～35mm, preferably adopt the thickness building stones to connect grating.
Described petroleum resin are C5 petroleum resin or C9 petroleum resin or C5～C9 copoly type petroleum resin.
Described silicate cement is an ordinary Portland cement, specifically can be 325# or abovely all can.
In the cement concrete road fast repairing material of the present invention, describedly mould firm native repair material and preferably include following components in weight percentage:
Petroleum resin 8～10, additive 2～3.5, building stones 180～200, zinc sulfide white 2.5～4, stopping composition 25～30; Described additive is made up of following components in weight percentage: unsaturated ester kind solvent oil 4～8, superpolymer rubber 1～2, diesel oil 4～10, UV light absorber 0.05～0.2.
For further strengthening the resistance to cleavage of cement concrete road fast repairing material of the present invention, can in moulding firm native repair material, add the synthon of 0.2～0.6 weight part; Described synthon can be trevira or polyacrylonitrile fibre, and length is advisable with 6～9mm.
In order further to improve the ageing resistance of cement concrete road fast repairing material of the present invention, also can in moulding firm native repair material, add the UV light absorber of 0.05～0.2 weight part; Specifically can be UV light absorber PG, UV light absorber UV-9 or ultraviolet absorbent UV-531 or two or more arbitrary combination in them.
The construction process of cement concrete road fast repairing material of the present invention is as follows:
A, clear up damaged road surface;
The firm native repair material of moulding of the present invention is inserted on B, past damaged road surface, insert shape and preferably be " turtle shell " shape, middle high low all around, compacting afterwards, diatomaceous middle part after the compacting still exceeds 0.5～2.5 centimetre on road surface, and periphery maintains an equal level a little more than the road surface or with the road surface, need not maintenance and can be open to traffic (owing to be difficult to accomplish absolutely compacting during construction, therefore insert when moulding firm native repair material and should exceed the road surface certain height, to prevent the shallow hole hole occurring after vehicle from rolling.)
In order to improve the bonding force of moulding between firm native repair material and the damaged road surface, cement concrete road fast repairing material of the present invention also is included in to insert moulds the base fluid that is painted on before the firm native repair material on the damaged road surface, described base fluid comprises 5～11 parts petroleum resin and 1.5～3.5 parts additive by weight;
Wherein, described additive is made up of following components in weight percentage: unsaturated ester kind solvent oil 2～10, rubber elastomer 0.5～2.5, diesel oil 2～10, UV light absorber 0～0.2; Described rubber elastomer is polyhutadiene, SBS thermoplastic styrene butadiene rubber, SIS thermoplastic elastomer (styrene-isoprene-phenylethene triblock copolymer) or SEBS thermoplastic elastomer.
Prepare on the damaged road surface after the base fluid that obtains directly is painted on cleaning, can strengthen early stage cohesive force, unsuitable blocked up during brushing, generally below 1mm, be advisable with 0.2～0.5mm.Higher as if the base fluid viscosity of preparing, be difficult for brushing, can add and brush again after an amount of unsaturated ester kind solvent oil dilutes, the add-on of general unsaturated ester kind solvent oil is 5～20 weight parts, its kind and the same.Consider from the ageing resistance of base fluid, preferably also comprise the UV light absorber of 0.05～0.2 weight part.
The present invention also provides the preparation method of above-mentioned cement concrete road fast repairing material, and it comprises that following preparation moulds the step of firm native repair material:
1) takes by weighing raw material by additive formulations, each raw material that is taken by weighing is mixed, make additive;
2) take by weighing raw material by moulding firm soil prescription, wherein building stones and stopping composition carried out preheating, standby; Get petroleum resin in the time of preheating and place reactor to be heated to 110～120 ℃, under agitation condition, add additive, stir, be warming up to 180～200 ℃, add zinc sulfide white, stir, continue to be warming up to 220～240 ℃, get material A, standby;
3) good building stones place the mix groove to get preheating, and the control flume temperature is at 210～240 ℃, and agitation condition adds material A down, and the back that stirs adds stopping composition, and mixing obtains moulding firm native repair material.
Of the present inventionly mould firm native repair material and can make earlier and deliver to the working-yard again, need not heating afterwards or stir, can help himself freely to as required, surplus material can continue to use in repairing next time, can not cause waste of material.
Compared with prior art, the firm native repair material of moulding of cement concrete road fast repairing material of the present invention forms the extremely strong building stones mixture of heavy-gravity force of cohesion under the effect of petroleum resin and polyhutadiene, after inserting damaged road surface (hole, hole etc.), moulding firm native repair material impacts because of being subjected to once and again the dynamic load of vehicle, and then produce certain deformation, make it more perfect with the combining more closely of hole, hole, chelating, thereby shape makes the concrete around the hole, hole and moulds firm native repair material one each other, and color and luster is close with original road surface.
Embodiment
The invention will be further described with embodiment below, but the present invention is not limited to these embodiment.
Embodiment 1
(1) prescription:
Cement concrete road fast repairing material in the present embodiment only contains to be useful on fills up the firm native repair material of moulding of damaged road surface, and the described prescription of moulding firm native repair material is as follows:
C5 petroleum resin 10Kg;
Additive 2Kg is made up of for 0.2 part 5 parts of methyl methacrylates, 1.3 parts of SIS thermoplastic elastomers, 2 parts of diesel oil and UV light absorber PG by weight;
Grouan grating building stones 200Kg is that the granite that 100 parts of the granites of 5～10mm, 50 parts of granites that particle diameter is 10～20mm and particle diameter are 25～35mm is formed for 50 parts by particle diameter by weight;
Zinc sulfide white 2.5Kg;
Stopping composition 20Kg is made up of for 12 parts 5 parts of diabase flours (80～120 order), ordinary Portland cement 325#6 part, 4 parts in calcium chloride and quartz sand by weight.
(2) preparation method:
1) takes by weighing raw material by additive formulations, place stirrer for mixing even each raw material that is taken by weighing, promptly make additive;
2) take by weighing raw material according to the prescription of stopping composition and place stirrer for mixing even, promptly make stopping composition;
3) get grouan grating building stones and step 2) stopping composition that makes is preheated to 180 ℃ respectively, and is standby; When carrying out preheating, get the C5 petroleum resin and place reactor to be heated to 120 ℃, under agitation condition, add the additive that step 1) makes, stir, be warming up to 180 ℃, add zinc sulfide white, stir, continue to be warming up to 220 ℃, get material A, standby;
3) good grouan grating building stones place the mix groove to get preheating, and the control flume temperature is at 220 ℃, and agitation condition adds material A down, the good stopping composition of back adding preheating stirs, mixing, discharging obtains moulding firm native repair material and is cement concrete road fast repairing material of the present invention.
(3) use:
Qiezhou, Guangxi to Nanning motorway is a cement concrete pavement, vehicular traffic be many, heavily be main, breakage defectives such as road often occurs cheating the hole, collapses (gnawing) limit, hole groove.Though maintenance department along the line actively repairs, and is subjected to the restriction of patching material, service time is long, and human and material resources consumption is big.The material of mending in 6 months, all occur broken in various degree or come off; Bituminous material high temperature is trickling down, after vehicle rolls, closes on 50～100 meters road surfaces and is polluted.
Repair with the firm native repair material of moulding that present embodiment makes in April, 2008, and construction process is as follows:
Peripheral loosening layer is also removed in A, the damaged road surface of cleaning;
B, insert the firm native repair material of moulding that present embodiment makes toward damaged road surface, (centre exceeds about 2～4 centimetres of road surface by low around middle high, periphery exceeds about 1～2 centimetre of road surface) shape inserts, can sprinkle one deck white cement again moulding on the firm native repair material of inserting, compacting afterwards, the diatomaceous middle part after the compacting still exceeds 1 centimetre on road surface, and periphery maintains an equal level with the road surface, cleaning periphery, open to traffic immediately.
Construction effect: through the use more than 2 years, it is smooth to repair road surface, still keeps good cementability with former concrete, peeling do not occur, peels off, phenomenon such as cracking.Now in the Guangxi large-scale application.
Embodiment 2
(1) prescription:
Cement concrete road fast repairing material in the present embodiment comprises and is used to fill up the firm native repair material of moulding of damaged road surface and is painted on base fluid on the damaged road surface.
The described prescription of moulding firm native repair material is as follows:
C9 petroleum resin 8Kg;
Additive 2.7Kg is made up of 8 parts of Jia Jibingxisuanyizhis, 0.5 part of SEBS thermoplastic elastomer, 10 parts of diesel oil and UV light absorber UV-90.1 part by weight;
Basalt grating building stones 180Kg is that the basalt building stones that 40 parts of the basalt building stones of 0.2～5mm, 60 parts of basalt building stones that particle diameter is 5～10mm and particle diameter are 10～15mm are formed for 80 parts by particle diameter by weight;
Zinc sulfide white 3.5Kg;
Stopping composition 25Kg is made up of for 10 parts 5 parts of diabase flours (20～100 order), ordinary Portland cement 325#5 part, 5 parts in calcium chloride and quartz sand by weight;
The trevira 0.4Kg of length 6～9mm;
UV light absorber UV-90.1Kg.
The prescription of described base fluid is as follows:
C9 petroleum resin 8Kg;
Additive 2.7Kg, its form with mould firm native repair material in the composition of additive identical;
Jia Jibingxisuanyizhi 10Kg;
UV light absorber UV-90.1Kg.
(2) preparation method:
1, firm native repair material is moulded in preparation:
1) takes by weighing raw material by additive formulations, place stirrer for mixing even each raw material that is taken by weighing, promptly make additive;
2) prescription according to stopping composition takes by weighing raw material, places stirrer for mixing even, promptly makes stopping composition;
3) get basalt grating building stones and step 2) stopping composition that makes is preheated to 200 ℃ respectively, and is standby; When carrying out preheating, get the C9 petroleum resin and place reactor to be heated to 110 ℃, under agitation condition, add the additive that step 1) makes, stir, be warming up to 200 ℃, add zinc sulfide white, stir, continue to be warming up to 240 ℃, get material A, standby;
3) good basalt grating building stones place the mix groove to get preheating, and the control flume temperature is at 210 ℃, and agitation condition adds material A down, and the back that stirs adds the good stopping composition of preheating, mixing, and discharging obtains moulding firm native repair material.
2, preparation base fluid:
1) takes by weighing raw material by additive formulations, place stirrer for mixing even each raw material that is taken by weighing, promptly make additive;
2) take by weighing the C9 petroleum resin according to the base fluid prescription and place reactor to be heated to 120 ℃, under agitation condition, add additive that step 1) makes and UV light absorber, stir, be cooled to room temperature, add the Jia Jibingxisuanyizhi of proportional quantity again, promptly make base fluid.
(3) use:
The narrow car in Yangjiang City location road, 325 national highway Guangdong Province is many, heavy, and temperature height, rainwater are many.Road surface, bridge floor Chang Keng hole, collapse (gnawing) limit, hole breakage defectives such as groove, maintenance place hot asphalt material commonly used is repaired, and in the season high in temperature, that rainwater is many, these patching materials are promptly damaged in January mostly.
Repair with the firm native repair material of moulding that present embodiment makes in September, 2006, and construction process is as follows:
Peripheral loosening layer is also removed in A, the damaged road surface of cleaning;
B, get the base fluid that present embodiment makes and be painted on the damaged road surface, brushing thickness is 0.5mm;
C, insert the firm native repair material of moulding that present embodiment makes toward damaged road surface, (centre exceeds about 2～4 centimetres of road surface by low around middle high, periphery exceeds about 1～2 centimetre of road surface) shape inserts, compacting afterwards, diatomaceous middle part after the compacting still exceeds 0.5 centimetre on road surface, periphery maintains an equal level with the road surface, cleaning periphery, open to traffic immediately.
Construction effect: through the use more than 3 years, it is smooth to repair road surface, still keeps good cementability with former concrete, peeling do not occur, peels off, phenomenon such as cracking.
Embodiment 3
(1) prescription:
Cement concrete road fast repairing material in the present embodiment comprises and is used to fill up the firm native repair material of moulding of damaged road surface and is painted on base fluid on the damaged road surface.
The described prescription of moulding firm native repair material is as follows:
C5 petroleum resin 6Kg;
Additive 1.5Kg is made up of for 5 parts 2 parts of butyl methacrylate, 2 parts of polyhutadiene and diesel oil by weight;
Particle diameter is 10～20mm diabase building stones 160Kg;
Zinc sulfide white 4Kg;
Stopping composition 30Kg is made up of for 8 parts 6 parts of diabase flours (20～120 order), ordinary Portland cement 325#4 part, 5 parts in calcium chloride and quartz sand by weight;
The polyacrylonitrile fibre 0.6Kg of length 6～9mm;
Ultraviolet absorbent UV-531 0.2Kg.
The prescription of described base fluid is as follows:
C9 petroleum resin 11Kg;
Additive 2.5Kg, its form with mould firm native repair material in the composition of additive identical.
(2) preparation method:
1, firm native repair material is moulded in preparation:
1) takes by weighing raw material by additive formulations, place stirrer for mixing even each raw material that is taken by weighing, promptly make additive;
2) prescription according to stopping composition takes by weighing raw material, places stirrer for mixing even, promptly makes stopping composition;
3) get diabase building stones and step 2) stopping composition that makes is preheated to 190 ℃ respectively, and is standby; When carrying out preheating, get the C5 petroleum resin and place reactor to be heated to 115 ℃, under agitation condition, add the additive that step 1) makes, stir, be warming up to 190 ℃, add zinc sulfide white, stir, continue to be warming up to 230 ℃, get material A, standby;
3) good diabase building stones place the mix groove to get preheating, and the control flume temperature is at 240 ℃, and agitation condition adds material A down, and the back that stirs adds the good stopping composition of preheating, mixing, and discharging obtains moulding firm native repair material.
2, preparation base fluid:
1) takes by weighing raw material by additive formulations, place stirrer for mixing even each raw material that is taken by weighing, promptly make additive;
2) take by weighing the C9 petroleum resin according to the base fluid prescription and place reactor to be heated to 110 ℃, under agitation condition, add the additive that step 1) makes, stir, be cooled to room temperature, promptly make base fluid.
Embodiment 4
(1) prescription:
Cement concrete road fast repairing material in the present embodiment comprises and is used to fill up the firm native repair material of moulding of damaged road surface and is painted on base fluid on the damaged road surface.
The described prescription of moulding firm native repair material is as follows:
C5 petroleum resin 4Kg, C9 petroleum resin 4Kg;
Additive 3.5Kg is made up of for 10 parts 8 parts of methyl methacrylates, 2 parts of polyhutadiene and diesel oil by weight;
Building stones 240Kg by weight, is that 100 parts in 2～5mm grouan and particle diameter are that 5～10mm basalt is formed for 140 parts by particle diameter;
Zinc sulfide white 5Kg;
Stopping composition 25Kg is made up of for 8 parts 4 parts of diabase flours (20～120 order), ordinary Portland cement 325#4 part, 4 parts in calcium chloride and quartz sand by weight.
The prescription of described base fluid is as follows:
C5 petroleum resin 5Kg;
Additive 3Kg, its form with mould firm native repair material in the composition of additive identical.
(2) preparation method:
1, firm native repair material is moulded in preparation:
1) takes by weighing raw material by additive formulations, place stirrer for mixing even each raw material that is taken by weighing, promptly make additive;
2) prescription according to stopping composition takes by weighing raw material, places stirrer for mixing even, promptly makes stopping composition;
3) get diabase flour and step 2) stopping composition that makes is preheated to 200 ℃ respectively, and is standby; When carrying out preheating, get the C5 petroleum resin and place reactor to be heated to 115 ℃, under agitation condition, add the additive that step 1) makes, stir, be warming up to 180 ℃, add zinc sulfide white, stir, continue to be warming up to 220 ℃, get material A, standby;
3) good building stones place the mix groove to get preheating, and the control flume temperature is at 240 ℃, and agitation condition adds material A down, and the back that stirs adds the good stopping composition of preheating, mixing, and discharging obtains moulding firm native repair material.
2, preparation base fluid:
1) takes by weighing raw material by additive formulations, place stirrer for mixing even each raw material that is taken by weighing, promptly make additive;
2) take by weighing the C9 petroleum resin according to the base fluid prescription and place reactor to be heated to 110 ℃, under agitation condition, add the additive that step 1) makes, stir, be cooled to room temperature, promptly make base fluid.
Claims (10)
1. cement concrete road fast repairing material is characterized in that: it comprises and is used to fill up the firm native repair material of moulding of damaged road surface, describedly moulds firm native repair material and comprises following components in weight percentage:
Petroleum resin 6～10, additive 1.5～3.5, building stones 160～240, zinc sulfide white 2.5～5, stopping composition 20～30;
Described additive is made up of following components in weight percentage: unsaturated ester kind solvent oil 2～10, rubber elastomer 0.5～2.5, diesel oil 2～10, UV light absorber 0～0.2; Described rubber elastomer is polyhutadiene, SBS thermoplastic styrene butadiene rubber, SIS thermoplastic elastomer or SEBS thermoplastic elastomer.
2. cement concrete road fast repairing material according to claim 1 is characterized in that: described stopping composition is made up of the following weight proportion raw material: basalt or diabase or granite powder 4～6, silicate cement 4～6, calcium chloride 4～6, quartz sand 8～12.
3. cement concrete road fast repairing material according to claim 1 is characterized in that: described unsaturated ester kind solvent oil is methyl methacrylate, Jia Jibingxisuanyizhi or butyl methacrylate.
4. cement concrete road fast repairing material according to claim 1 is characterized in that: described building stones are basalt or diabase or grouan, and particle diameter is 0.2～35mm.
5. cement concrete road fast repairing material according to claim 1 is characterized in that: describedly mould the synthon that firm native repair material also comprises 0.2～0.6 weight part.
6. cement concrete road fast repairing material according to claim 5 is characterized in that: described synthon are trevira or polyacrylonitrile fibre.
7. cement concrete road fast repairing material according to claim 5 is characterized in that: describedly mould the UV light absorber that firm native repair material also comprises 0.05～0.2 weight part.
8. according to any one described cement concrete road fast repairing material in the claim 1～7, it is characterized in that: this cement concrete road fast repairing material also is included in to insert moulds the base fluid that is painted on before the firm native repair material on the damaged road surface, described base fluid comprises 5～11 parts petroleum resin and 1.5～3.5 parts additive by weight;
Wherein, described additive is made up of following components in weight percentage: unsaturated ester kind solvent oil 2～10, rubber elastomer 0.5～2.5, diesel oil 2～10, UV light absorber 0～0.2; Described rubber elastomer is polyhutadiene, SBS thermoplastic styrene butadiene rubber, SIS thermoplastic elastomer or SEBS thermoplastic elastomer.
9. cement concrete road fast repairing material according to claim 8 is characterized in that: described base fluid also comprises the unsaturated ester kind solvent oil of 5～20 weight parts and/or the UV light absorber of 0.05～0.2 weight part.
10. the preparation method of the described cement concrete road fast repairing material of claim 1 is characterized in that: comprise that following preparation moulds the step of firm native repair material:
1) takes by weighing raw material by additive formulations, each raw material that is taken by weighing is mixed, make additive;
2) take by weighing raw material by moulding firm soil prescription, wherein building stones and stopping composition carried out preheating, standby; Get petroleum resin in the time of preheating and place reactor to be heated to 110～120 ℃, under agitation condition, add additive, stir, be warming up to 180～200 ℃, add zinc sulfide white, stir, continue to be warming up to 220～240 ℃, get material A, standby;
3) good building stones place the mix groove to get preheating, and the control flume temperature is at 210～240 ℃, and agitation condition adds material A down, and the back that stirs adds stopping composition, and mixing obtains moulding firm native repair material.
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| CN105044314A (en) * | 2015-04-27 | 2015-11-11 | 大连理工大学 | Rubber simulated concrete and plasticity adjustment simulation method thereof |
| CN106495565A (en) * | 2016-10-20 | 2017-03-15 | 常州市鼎升环保科技有限公司 | A kind of preparation method of epoxy radicals pavement patching material |
| CN106677046A (en) * | 2017-01-05 | 2017-05-17 | 孙晗 | Damaged road repairing method |
| CN111855550A (en) * | 2020-07-31 | 2020-10-30 | 招商局重庆交通科研设计院有限公司 | Aging test method for joint compound |
| CN112608107A (en) * | 2020-12-31 | 2021-04-06 | 苏州佳固士新材料科技有限公司 | Grouting material and preparation method and application thereof |
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