CN104609803A - Rubber-particle cement-based material joint filler for concrete pavement and construction method thereof - Google Patents
Rubber-particle cement-based material joint filler for concrete pavement and construction method thereof Download PDFInfo
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- CN104609803A CN104609803A CN201510046625.6A CN201510046625A CN104609803A CN 104609803 A CN104609803 A CN 104609803A CN 201510046625 A CN201510046625 A CN 201510046625A CN 104609803 A CN104609803 A CN 104609803A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a rubber-particle cement-based material joint filler for a concrete pavement. The rubber-particle cement-based material joint filler comprises rubber particles, cement, sand and water with the mass ratio being 1:1.5-3.5:4-7, wherein the mass ratio of the rubber particles and the sand is 1:12-25, the particle diameter of the rubber particles is 1-2mm and the density of the rubber particles is 1000-1300Kg/m<3>; and the cement adopts P.O42.5 ordinary portland cement, and the fineness modulus of the sand is 3.0-2.3. The rubber-particle cement-based material joint filler has the characteristics of high toughness and large deformation, and can meet the requirement of the joint filler for the concrete pavement; the joint filler is not easy in ageing and to fail; and the service life of the road can be prolonged; in the process of utilizing the rubber-particle cement-based material joint filler to fill expansion joints of the cement-based pavement, force transferring rods do not need to be arranged between two cement-based pavement slabs, so that the construction process is simplified.
Description
Technical field
The invention belongs to material of construction, technical field of civil engineering, particularly relate to a kind of rubber particle cement-based material seam sealer for cement-concrete road shrinkage joint.
Background technology
Cement concrete pavement has the advantages such as supporting capacity is large, good stability, long service life, routine servicing expense are low, and China's cement output is large simultaneously, distribution is wide, and various places can be supplied nearby.Therefore from the beginning of the eighties in last century, cement concrete pavement is just widely used in, on the main and secondary road of highway and urban road, more being developed rapidly in recent years.Cement-concrete road must arrange shrinkage joint, and in use often occur the diseases such as crack, purt mud, faulting of slab ends, these diseases have a strong impact on the supporting capacity of concrete road surface, ride comfort and work-ing life.The reason producing these diseases is a lot, but the seam sealer adopted with seam is to a great extent relevant.
Cement concrete pavement seam sealer has three major functions.(1) prevent road surface water from infiltrating roadbed, road surface water is once infiltrate roadbed along seam, and subgrade strength will be made to reduce, and concrete slab will ftracture under action of traffic loading; (2) prevent from falling into foreign material in seam.The hard object such as sand, stone falls into seam can make seam lose breathing function, and when road surface plate expands with the rising of temperature, seam crossing concrete is often squeezed bad.So the quality of seam sealer have impact on quality and the work-ing life of cement concrete pavement to a great extent; (3) ride comfort is improved.
Conventional seam sealer has bituminous material, polyvinyl chloride (PVC) cement and TS clay, and these materials are all organic materialss.Mainly contain the drawback of three aspects: it is good not that (1) these organic materialss and cement pavement seam wall bond; (2) usually need in construction process to be provided with dowel bar between adjacent cement based road deck, construction technology is comparatively complicated; (3) organic materials is easily aging.Therefore, use and usually to there will be that seam sealer peels off, extrudes, aging cracked phenomenon after for some time.The inefficacy of seam sealer, damage, gradually by fillings such as sand, stone, soil in seam, hinder the expansion of plate, thus cause the buckling of plate, the damage such as broken and seam is peeled off.Pavement surface water flows into basis, causes the softening purt mud in basis or frost heave, and then brings out other disease.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of rubber particle cement-based material seam sealer for cement pavement, have toughness high, be out of shape large feature, the requirement of cement pavement seam sealer can be met; This seam sealer is difficult to aging and failure; The work-ing life of road can be extended.
In order to solve the problems of the technologies described above, a kind of rubber particle cement-based material seam sealer for cement pavement that the present invention proposes, comprise rubber particle, cement, sand and water, wherein, water: cement: the mass ratio of sand is 1:1.5 ~ 3.5:4 ~ 7, the mass ratio of rubber particle and sand is 1:12 ~ 25, and the particle diameter of described rubber particle is 1 ~ 2mm, and density is 1000 ~ 1300Kg/m
3, described cement adopts P.O42.5 ordinary Portland cement, and the fineness modulus of described sand is 3.0 ~ 2.3.
The present invention is used for the rubber particle cement-based material seam sealer of cement pavement, wherein, has the preferred proportion of following several each component:
Water: cement: the mass ratio of sand is 1:2:4, the mass ratio of rubber particle and sand is 1:25.
Water: cement: the mass ratio of sand is 1:2:4, the mass ratio of rubber particle and sand is 1:20.
Water: cement: the mass ratio of sand is 1:2:4, the mass ratio of rubber particle and sand is 1:16.
Water: cement: the mass ratio of sand is 1:2:4, the quality of rubber particle and sand is 1:12.
For the constructional method at the expansion joint, rubber particle cement-based material seam sealer filling concrete road surface of cement pavement, step is: in the process of cement pavement construction, every 5 ~ 6 meters of cement pavements reserve the gap of a 8 ~ 15cm, 2h ~ 4h after cement pavement is built, in described gap, pour into described seam sealer, after fully plugging and pounding, carry out maintenance of surface according to the regulation of " highway cement concrete pavement operating technique detailed rules and regulations " JTG/TF30-2014.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention proposes to adopt rubber particle cement-based material as seam sealer.
(1) conventional telescopic seam material be that organic materials is easily aging, seam sealer of the present invention is a kind of rubber particle elastic cement sill, have toughness high, be out of shape large feature.And rubber particle cement-based material is a kind of inorganic materials, not easily aging, good with the adhesive property of cement pavement.
(2) in the process of laying, the construction of conventional telescopic seam is complicated, needs to arrange dowel bar to ensure road surface and seam sealer collaborative work, and uses rubber particle cement-based material of the present invention can to build with road surface simultaneously, do not need to arrange dowel bar, reduce the difficulty of construction.
(3) in the process used, conventional telescopic seam is bad with the adhesive property of cement pavement, cause in seam gradually by fillings such as sand, stone, soil, after using seam sealer of the present invention, because road surface does not exist gap, rubbish, dust and the water containing salinity not easily penetrate into road inside, can extend the work-ing life of cement pavement, reduce the expense of later maintenance.
Accompanying drawing explanation
Fig. 1 is to seam sealer material limits stretching strain test schematic diagram of the present invention;
Fig. 2 is that seam sealer and cement pavement bond anti-folding test specimen schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical solution of the present invention is described in further detail.
Propose in the present invention a kind of rubber particle cement-based material seam sealer for cement pavement proportion design and by verification experimental verification rubber particle cement-based material seam sealer of the present invention can with road surface cement-based material collaborative work.
One, the present invention is used for the proportion design of the rubber particle cement-based material seam sealer of cement pavement
A kind of rubber particle cement-based material seam sealer for cement pavement that the present invention proposes, comprise rubber particle, cement, sand and water, wherein, water: cement: the mass ratio of sand is 1:1.5 ~ 3.5:4 ~ 7, the mass ratio of rubber particle and sand is 1:12 ~ 25, the particle diameter of described rubber particle is 1 ~ 2mm, and density is 1000 ~ 1300Kg/m
3, described cement adopts P.O42.5 ordinary Portland cement, and the fineness modulus of described sand is 3.0 ~ 2.3.
The preferred proportion of following several groups of rubber particles, cement, sand and water is had in seam sealer of the present invention:
Rubber particle: water: cement: the mass ratio of sand is 4:25:50:100;
Rubber particle: water: cement: the mass ratio of sand is 1:5:10:20;
Rubber particle: water: cement: the mass ratio of sand is 1:4:8:16;
Rubber particle: water: cement: the mass ratio of sand is 1:3:6:12.
What research showed rubber particle mixes the ultimate tensile strength that can increase cement-based material, but can reduce the intensity of cement-based material.Therefore, configuration rubber particle cement-based material, as seam sealer, meet the following conditions:
(1) ultimate compression strength of rubber particle cement-based material is not less than the ultimate compression strength of high strength;
(2) limit tension and compression of rubber particle cement-based material become the ultimate tensile strength being greater than high strength.
In the present invention's research, adopt circular arc I type cross section test specimen to measure the direct tensile property of mortar, the loading method of test specimen and the layout of foil gauge as shown in Figure 1, paste foil gauge Y in the middle part of test specimen, connect the limit tensile strain of strain gage and computer measurement test specimen, F is the direction loaded.
Configuration high strength, its ultimate compression strength is 20MPa, and maximum stretching strain is 45 × 10
-3mm, folding strength is 3.78MPa.Configuration A, B two groups of seam sealers, wherein, water: cement: the mass ratio of sand is 1:2:4, conveniently tests, adopts the rubber particle replacement a part of sand wherein mixing different mass in every cubic metre of seam sealer respectively for added rubber particle.
A group: rubber particle 50Kg in every cubic metre of seam sealer; Cement 760Kg; Sand 1394Kg; Water 380Kg.
B group: rubber particle 100Kg in every cube of seam sealer, cement 760Kg, sand 1268Kg, water 380Kg.
Table 1 A, B group material and Mechanical Properties of Cement-based Materials
The mechanical property of A, B two groups of materials and the basic mechanical performance of high strength are contrasted, in table 1, can find the ultimate compression strength of the proportioning seam sealer of A group and B group and ultimate tensile strength be all greater than high strength ultimate compression strength and ultimate tensile strength, all can meet above-mentioned condition (1) and (2).
Two, verify rubber particle cement-based material seam sealer of the present invention can with road surface cement-based material collaborative work
As shown in Figure 2, make two groups of test specimens, often organize test specimen 6: adopt cement-based material test specimen (being of a size of the standard cement base stock stiffness test specimen of 40mm × 40mm × 160mm) respectively, be divided into identical two sections from centre, between two sections, form the dead slot that size is about 40mm × 40mm × 10mm; A and B two seam sealer of above-mentioned configuration is poured in the dead slot of test specimen respectively separately, equal maintenance 28 days.Adopt the adhesive bending behavior of the seam sealer of anti-folding Standard test method contrast A, the B of mortar two groups of different ratio to average, the test-results drawn is in table 2.Test-results shows: test specimen folding strength is all not less than the folding strength of high strength; The crack location of test specimen is positioned at the bonding part of seam sealer and cement pavement material; The folding strength of intensity during destruction and cement pavement material is basically identical.
Table 2 A, B two groups of seam sealers and cement-based material adhesive bending strength table
Without the need to arranging dowel bar between adjacent two pieces of cement based road decks in the process at the expansion joint, rubber particle cement-based material seam sealer filling concrete base road surface for cement pavement utilizing the present invention to propose, simplify construction technology, the steps include: in the process of cement pavement construction, every 5 ~ 6 meters of cement pavements reserve the gap of a 8 ~ 15cm, 2h ~ 4h after cement pavement is built, described seam sealer of the present invention is poured in described gap, and fully plug and pound, to ensure that seam sealer and flexible slotted wall bond completely.Maintenance of surface is carried out according to the regulation of " highway cement concrete pavement operating technique detailed rules and regulations " JTG/TF30-2014.
Although invention has been described by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; when not departing from present inventive concept, can also make a lot of distortion, these all belong within protection of the present invention.
Claims (6)
1. the rubber particle cement-based material seam sealer for cement pavement, it is characterized in that, comprise rubber particle, cement, sand and water, wherein, water: cement: the mass ratio of sand is 1:1.5 ~ 3.5:4 ~ 7, the mass ratio of rubber particle and sand is 1:12 ~ 25, and the particle diameter of described rubber particle is 1 ~ 2mm, and density is 1000 ~ 1300Kg/m
3, described cement adopts P.O42.5 ordinary Portland cement, and the fineness modulus of described sand is 3.0 ~ 2.3.
2. according to claim 1 for the rubber particle cement-based material seam sealer of cement pavement, wherein, water: cement: the mass ratio of sand is 1:2:4, the mass ratio of rubber particle and sand is 1:25.
3. according to claim 1 for the rubber particle cement-based material seam sealer of cement pavement, wherein, water: cement: the mass ratio of sand is 1:2:4, the mass ratio of rubber particle and sand is 1:20.
4. according to claim 1 for the rubber particle cement-based material seam sealer of cement pavement, wherein, water: cement: the mass ratio of sand is 1:2:4, the mass ratio of rubber particle and sand is 1:16.
5. according to claim 1 for the rubber particle cement-based material seam sealer of cement pavement, wherein, water: cement: the mass ratio of sand is 1:2:4, the quality of rubber particle and sand is 1:12.
6. according to the constructional method at the described expansion joint, rubber particle cement-based material seam sealer filling concrete road surface for cement pavement arbitrary in claim 1 to 5, it is characterized in that, step is: in the process of cement pavement construction, every 5 ~ 6 meters of cement pavements reserve the gap of a 8 ~ 15cm, 2h ~ 4h after cement pavement is built, in described gap, pour into described seam sealer, after fully plugging and pounding, carry out maintenance of surface according to the regulation of " highway cement concrete pavement operating technique detailed rules and regulations " JTG/TF30-2014.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060470A (en) * | 2018-07-10 | 2018-12-21 | 中国石油大学(北京) | A kind of hydraulic fracturing experiments test specimen of prefabricated intrinsic fracture and preparation method thereof |
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| CN102649633A (en) * | 2012-05-04 | 2012-08-29 | 中国十七冶集团有限公司 | Novel post-cast strip concrete |
| WO2013004621A1 (en) * | 2011-07-01 | 2013-01-10 | Wacker Chemie Ag | Gypsum-containing construction material compounds |
| CN103089013A (en) * | 2013-01-31 | 2013-05-08 | 厦门大学 | Anti-cracking construction method of light heat preservation batten wall body |
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| CN1986481A (en) * | 2006-11-16 | 2007-06-27 | 天津大学 | Flexible reinforced cement concrete |
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| CN101767967A (en) * | 2010-01-12 | 2010-07-07 | 天津城市建设学院 | Elastic concrete for caulking bridge expansion joints and preparation method |
| WO2013004621A1 (en) * | 2011-07-01 | 2013-01-10 | Wacker Chemie Ag | Gypsum-containing construction material compounds |
| CN102649633A (en) * | 2012-05-04 | 2012-08-29 | 中国十七冶集团有限公司 | Novel post-cast strip concrete |
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Application publication date: 20150513 |