CN101265685A - Method for regenerating waste solid for use in road foundation - Google Patents
Method for regenerating waste solid for use in road foundation Download PDFInfo
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- CN101265685A CN101265685A CNA2007100621914A CN200710062191A CN101265685A CN 101265685 A CN101265685 A CN 101265685A CN A2007100621914 A CNA2007100621914 A CN A2007100621914A CN 200710062191 A CN200710062191 A CN 200710062191A CN 101265685 A CN101265685 A CN 101265685A
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Abstract
A method of recycling the solid waste in road base engineering belongs to the technology field of waste recycling, and solves the problem of the solid waste recycling. The method includes: using waste concrete blocks, waste bricks, waste tiles and waste stones of the solid waste as the major material, crushing into pieces by a crusher, separating the metal substances by a magnetic separator, obtaining two major categories of recycling gradation solid material with granule diameters of 0-30mm and 0-70mm respectively conform to the granule continuous gradation. The recycling gradation solid material with the granule diameter of 0-30mm can be directly used as the base of a road pavement water permeable pavior brick, the packing of a subgrade bedding layer and the filling/exchanging reinforcing material of a soft soil subgrade; the recycling gradation solid material with the granule diameter of 0-70mm can be directly used as the packing of road engineering subgrade stone column replacement. The recycling gradation solid material can be blended with flyash, lime, carbide slag and cement to form different subgrade materials. The advanced method makes full use of the resources, and is applicable to recycling all solid waste into recycling gradation solid material and further to the road construction, which offers a promising prospect of popularization.
Description
Technical field
The invention belongs to a kind of method that will waste solid be used for roadbase after the regeneration in the twice laid technical field.
Background technology
Along with advancing by leaps and bounds of World Economics, particularly fully utilize being showing improvement or progress day by day of salvage property source technology, therefore also more and more urgent to the technical requirements of waste solid regeneration.In known technology, existing waste solid such as useless brick, useless tile, barren rock, waste concrete piece or the like, it utilizes mainly is to fill building lot to tamp again, and transported to the countryside mostly, air storage is carried out in the rural area, deep layer landfill etc.So both accounted for land resources, caused serious environment pollution again, also wasted the refuse collection expense, particularly hidden some dangers for to the descendants.Therefore, the regeneration to waste solid is a current difficult problem that needs to be resolved hurrily.
Summary of the invention
In order to overcome the deficiency of prior art, solve the regeneration problem of waste solid, the invention provides a kind of regeneration that can solve waste solid effectively, turn waste into wealth, further develop materials and equipment resources, be beneficial to society and ecological environment, saving fund, the new method that the regeneration comprehensive of the waste solid of creation economic benefit utilizes.
The present invention addresses the above problem the technical scheme that is adopted:
A kind of waste solid regeneration is in the method for roadbase, it is the waste concrete piece with waste solid, useless brick, useless watt, barren rock is a primary raw material, through crusher in crushing, after magnetic separator separates metal object, being made for particle diameter is 0～30mm, the two big classes of 0～70mm meet the regeneration grating solid material of particle continuous grading, particle diameter is the basic unit that the regeneration grating solid material of 0～30mm directly is used as road sidewalk water-permeable pavement brick, the filler of roadbed bed course, reinforcing material is changed in soft soil roadbed filling out, and particle diameter is the filler that the regeneration grating solid material of 0～70mm is directly handled as highway construction roadbed broken stone pile.
Above-mentioned waste solid regeneration is in the method for roadbase, described regeneration grating solid material meet the particle continuous grading, be meant and meet " highway road surface construction technique normalizing " (JTJ 034-2000), " asphalt highway design specifications " (JTG D50-2006), the particle continuous grading requirement of " construction of flyash lime class roadbase and control of acceptance " (CJJ 4-97), the crush values that regeneration grating solid material is applied to the motorway subbase is not more than 30%, be applied to nonmotorized vehicle lane and sidewalk basic unit, crush values is not more than 35% during subbase, in the regeneration grating solid material less than the granule content of 0.6mm below 30%, index of plasticity should be not more than 10.
Above-mentioned waste solid regeneration is mixed cement in the method for roadbase in the described regeneration grating solid material, by the quality proportioning of regeneration grating solid material 100, cement 3-8, is made for cement stabilized type regeneration grating solid material.
Above-mentioned waste solid regeneration is in the method for roadbase, mix cement and flyash in the described regeneration grating solid material, by the quality proportioning of regeneration grating solid material 80-93, cement 2-6, flyash 5-20, be made for cement, flyash and stablize class regeneration grating solid material.
Above-mentioned waste solid regeneration is in the method for roadbase, mix lime, cement and flyash in the described regeneration grating solid material, by the quality proportioning of regeneration grating solid material 70-85, lime 3-8, flyash 8-25, cement 1-3, be made for lime-flyash stabilization class regeneration grating solid material.
Above-mentioned waste solid regeneration is in the method for roadbase, mix flyash, carbide slag in the described regeneration grating solid material, the mass ratio of pressing carbide slag 4-10, flyash 10-20, regeneration grating solid material 70-85 mixes, make carbide slag flyash and stablize class regeneration grating solid material, the efficient oxidation calcium of used carbide slag, magnesia resultant are more than 50.0%.
Above-mentioned waste solid regeneration is in the method for roadbase, mix flyash, carbide slag, cement in the described regeneration grating solid material, mass ratio by regeneration grating solid material 70-85, carbide slag 4-10, flyash 10-20, cement 1-3.5 mixes, and makes carbide slag pulverized fuel ash cement comprehensive stability class regeneration grating solid material.
Above-mentioned waste solid regeneration is in the method for roadbase, the lime component of mixing in the described regeneration grating solid material, and lime is above slaked lime of III level or the above fine grinding quicklime of III level.
Above-mentioned waste solid regeneration is in the method for roadbase, and the carbide slag component of mixing in the described regeneration grating solid material is characterized in that the efficient oxidation calcium in the carbide slag, magnesia resultant are more than 50.0%
Above-mentioned waste solid regeneration is in the method for roadbase, and the flyash component of mixing in the described regeneration grating solid material is characterized in that SiO in the flyash
2+ Al
2O
3+ Fe
2O
3Content should be greater than 70%, the loss on ignition of flyash should not surpass 20%, the specific area of flyash should be greater than 2500cm
2/ g, or 90% by the 0.3mm sieve aperture, 70% by the 0.075mm sieve aperture, does, wet fly-ash all can use, and the water content of wet fly-ash is no more than 35%.
Above-mentioned waste solid regeneration is in the method for roadbase, and the cement component that mixes in the described regeneration grating solid material is characterized in that cement is retarded cement, selects the above and cement of final setting time more than 6h of initial setting time 3h for use.
When the present invention uses, according to designing requirement, by the above-mentioned index of correspondingly preparing burden, prepare burden, it is even to add the entry mix, and the amount of its water is determined by compaction test, carries out the roadbase construction operation.
Because the present invention designs and has adopted technique scheme, has solved the regeneration of waste solid effectively and has been beneficial to the protection problem of environment.Show that through testing result on trial for several times it compared with prior art has following beneficial effect:
I, utilize waste solid production regeneration grating solid material, help protecting environment, reduce and pollute; ,
Ii, utilize waste solid production regeneration grating solid material, can be used for roadbase separately, also can mix other material and form the road base material, satisfy corresponding roadbase materials standard, reach the materials requirement of different roadbases fully, effectively utilize resource.
In a word, the present invention can solve the regeneration of waste solid effectively, its process level advanced person, design innovation is turned waste into wealth, and available materials and equipment resources puts everything to its best use, be beneficial to society and ecological environment, save fund greatly, create remarkable economic efficiency.It is applicable to all waste solid production regeneration grating solid materials, is widely used in road construction, has wide promotion prospect.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
With the building waste waste concrete piece that reclaims, useless brick is raw material, becomes the regeneration grating solid material of the continuous grading of 0～30mm particle diameter after through crusher in crushing, magnetic separator metal object being separated.
The concrete grain composition of regenerative solid material sees the following form:
The crush values of the regeneration grating solid material of gained is 33.4%, and in the regeneration grating solid material more than the 0.5mm particle diameter, waste concrete piece content accounts for 52.2%, and useless fragment of brick content accounts for 47.8%, and the index of plasticity of the following fine grained soils of 0.5mm is 8.1 in the material.
After testing, this regeneration grating solid material meets the grain composition requirement of " highway road surface construction technique normalizing " (JTJ 034-2000), " asphalt highway design specifications " (JTG D50-2006), " construction of flyash lime class roadbase and control of acceptance " (CJJ 4-97).
This regeneration grating solid material has been used separately as the basic unit of Cangzhou City road sidewalk, Hebei province water-permeable pavement brick, reinforcing material is changed in the filler and soft soil roadbed the filling out of roadbed bed course.Because full water, the good water permeability of this regeneration grating solid material are beneficial to protection and improve the urban environment that worsens day by day, reduce the rain big flood evil brought because of the urban pavement sclerosis, self-restraint urban groundwater, adjusting urban climate.
Embodiment 2
Adopt in the regeneration grating solid material similarly to Example 1 and mixed lime, flyash, cement component.
Effective CaO+MgO that lime adopts is 56.8% III level slaked lime.
The flyash of the listed index of following table that flyash adopts:
| Index | Loss on ignition (%) | Loose measure density (Kg/m 3) | SiO 2 (％) | Al 2O 3 (％) | Fe 2O 3 (％) | CaO (％) | MgO (％) | SO 2 (％) |
| Detected value | 8.44 | 680 | 47.55 | 32.48 | 5.44 | 2.67 | 0.75 | 0.45 |
Fineness of pulverized-coal ash: the 0.3mm sieve aperture is 100% by quality percentage; 0.15mm sieve aperture is 99.2% by quality percentage; 0.075mm sieve aperture is 88.2% by quality percentage.
Cement adopts the retarded cement of 32.5MPa, and the above and final setting time of jelling time 3h is more than 6h.
Quality proportioning by regeneration grating solid material 82, lime 5, flyash 11.5, cement 1.5 is mixed, and makes lime fly ash cement stabilized type regeneration grating solid material of the present invention.Determine the maximum dry density 1.68g/cm of compound by standard compaction test
3With optimum moisture content 16.4%, preparation unconfined compression strength test specimen records 7 days of test specimen and 28 days unconfined compression strengths are respectively 2.00MPa and 3.87MPa, 180 days indirect tensile strength 0.68MPa.
Lime fly ash cement stabilized type of the present invention regeneration grating solid material is applied to the basic unit of Cangzhou City town road nonmotorized vehicle lane, bores core after 7 days in maintenance and materials two, detection unconfined compression strength average is 1.53MPa; The core boring sampling test specimen was one in 28 days, and unconfined compression strength is 2.34MPa.
Embodiment 3
With contain waste concrete piece, useless brick, useless watt, the building waste of useless rubble are raw material, after through the fragmentation of RM80 type stone breaker, magnetic separator metal object being separated, become the regenerative solid material of the continuous grading of 0～30mm particle diameter.
The concrete grain composition of regeneration grating solid material sees the following form:
The crush values of the regeneration grating solid material of gained is 28.4%, in the regeneration grating solid material more than the 0.5mm particle diameter, waste concrete piece content accounts for 62.7%, remaining useless brick content accounts for 13.2%, watt content that gives up accounts for 21.6%, the rubble content that gives up accounts for 2.5%, and the index of plasticity of the following fine grained soils of 0.5mm is 6.8 in the material.
To cement, flyash have been mixed in the above-mentioned regeneration grating solid material, mix for regenerative solid material 88, cement 3, flyash 9 by weight ratio, make cement, flyash stable type regeneration grating solid material of the present invention, determine the maximum dry density 1.78g/cm of compound by standard compaction test
3With optimum moisture content 16.7%, preparation unconfined compression strength test specimen records 7 days of test specimen and 28 days unconfined compression strengths are respectively 2.6MPa and 2.8MPa.Directly be used as the road foundation bed course filler,
Embodiment 4
Adopt regeneration grating solid material similarly to Example 1, mix flyash, carbide slag, the mass ratio of pressing carbide slag 7, flyash 13, regeneration grating solid material 80 mixes, and makes carbide slag flyash and stablizes class regeneration grating solid material.Determine the maximum dry density 1.60g/cm of compound by standard compaction test
3With optimum moisture content 16.0%, preparation unconfined compression strength test specimen records 7 days of test specimen and 28 days unconfined compression strengths are respectively 1.0MPa and 1.7MPa, 180 days indirect tensile strength 0.35MPa.
The efficient oxidation calcium of used carbide slag, magnesia resultant are 55.8%.
Embodiment 5
Adopt regeneration grating solid material similarly to Example 3 to mix flyash, carbide slag, mass ratio by regeneration grating solid material 80, carbide slag 5, flyash 15, cement 2 mixes, and makes carbide slag pulverized fuel ash cement comprehensive stability class regeneration grating solid material.Determine the maximum dry density 1.64g/cm of compound by standard compaction test
3With optimum moisture content 18.3%, preparation unconfined compression strength test specimen records 7 days of test specimen and 28 days unconfined compression strengths are respectively 1.61MPa and 3.0MPa.
Embodiment 6
Mix cement component in the present embodiment employing regeneration grating solid material similarly to Example 1, pressed cement consumption and be 5.0% of regeneration grating masonry aggregate quality, made cement stabilized type regeneration grating solid material of the present invention.Determine the maximum dry density 1.81g/cm of compound by standard compaction test
3With optimum moisture content 14.4%, preparation unconfined compression strength test specimen records 7 days of test specimen and 28 days unconfined compression strengths are respectively 3.3MPa and 4.7MPa, 90 days indirect tensile strength 0.60MPa.The unconfined compression strength of this cement stabilized type regeneration grating solid material is higher, has been used as the top layer of city thoroughfare motorway subbase and the basic unit of nonmotorized vehicle lane.
Claims (7)
1. a waste solid regeneration is in the method for roadbase, it is characterized in that, it is the waste concrete piece with waste solid, useless brick, useless watt, barren rock is a primary raw material, through crusher in crushing, after magnetic separator separates metal object, being made for particle diameter is 0～30mm, the two big classes of 0～70mm meet the regeneration grating solid material of particle continuous grading, particle diameter is the basic unit that the regeneration grating solid material of 0～30mm directly is used as road sidewalk water-permeable pavement brick, the filler of roadbed bed course, reinforcing material is changed in soft soil roadbed filling out, and particle diameter is the filler that the regeneration grating solid material of 0～70mm is directly handled as highway construction roadbed broken stone pile.
2. waste solid regeneration according to claim 1 is in the method for roadbase, it is characterized in that, regeneration grating solid material meet the particle continuous grading, be meant and meet " highway road surface construction technique normalizing " (JTJ 034-2000), " asphalt highway design specifications " (JTG D50-2006), the particle continuous grading requirement of " construction of flyash lime class roadbase and control of acceptance " (CJJ 4-97), the crush values that regeneration grating solid material is applied to the motorway subbase is not more than 30%, be applied to nonmotorized vehicle lane and sidewalk basic unit, crush values is not more than 35% during subbase, in the regeneration grating solid material less than the granule content of 0.6mm below 30%, index of plasticity should be not more than 10.
3. waste solid regeneration according to claim 1 is in the method for roadbase, it is characterized in that, mix cement in the regeneration grating solid material,, be made for cement stabilized type regeneration grating solid material by the quality proportioning of regeneration grating solid material 100, cement 3-8.
4. waste solid regeneration according to claim 1 is in the method for roadbase, it is characterized in that, mix cement and flyash in the regeneration grating solid material, by the quality proportioning of regeneration grating solid material 80-93, cement 2-6, flyash 5-20, be made for cement, flyash and stablize class regeneration grating solid material.
5. waste solid regeneration according to claim 1 is in the method for roadbase, it is characterized in that, mix lime, cement and flyash in the regeneration grating solid material, by the quality proportioning of regeneration grating solid material 70-85, lime 3-8, flyash 8-25, cement 1-3, be made for lime fly ash class regeneration grating solid material.
6. waste solid regeneration according to claim 1 is in the method for roadbase, it is characterized in that, mix flyash, carbide slag in the regeneration grating solid material, the mass ratio of pressing carbide slag 4-10, flyash 10-20, regeneration grating solid material 70-85 mixes, and makes carbide slag flyash and stablizes class regeneration grating solid material.
7. waste solid regeneration according to claim 1 is in the method for roadbase, it is characterized in that, mix flyash, carbide slag, cement in the regeneration grating solid material, mass ratio by regeneration grating solid material 70-85, carbide slag 4-10, flyash 10-20, cement 1-3.5 mixes, and makes carbide slag pulverized fuel ash cement comprehensive stability class regeneration grating solid material.
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| CNA2007100621914A CN101265685A (en) | 2007-06-24 | 2007-06-24 | Method for regenerating waste solid for use in road foundation |
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| CNA2007100621914A CN101265685A (en) | 2007-06-24 | 2007-06-24 | Method for regenerating waste solid for use in road foundation |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345261A (en) * | 2011-07-14 | 2012-02-08 | 辽宁建工集团有限公司 | Road pavement subbase |
| CN102505682A (en) * | 2011-10-31 | 2012-06-20 | 山东鸿泰建设集团有限公司 | Building waste powder cement pile and foundation treatment method thereof |
| CN103806434A (en) * | 2014-03-09 | 2014-05-21 | 西南科技大学 | Method for processing saturated overwet soil foundation for prespud operation by using graded construction slag soilbag |
| CN104195919A (en) * | 2014-08-27 | 2014-12-10 | 成都市容德建筑劳务有限公司 | Gravel waste sidewalk construction process |
| CN104876477A (en) * | 2015-04-10 | 2015-09-02 | 同济大学 | Stable regeneration method of cement fly-ash gravel base reclaimed material cement based on mortar content control |
| CN105784979A (en) * | 2014-12-17 | 2016-07-20 | 刘庆国 | Method for testing content of flat and elongated particles of roadbed filling materials produced from construction wastes |
| CN106336173A (en) * | 2016-08-17 | 2017-01-18 | 北京通汇盛通环保科技发展有限公司 | High-performance cement stabilized macadam and preparation method thereof |
| CN106630816A (en) * | 2016-10-14 | 2017-05-10 | 鞍钢集团矿业有限公司 | Method for preparing road base mixture by utilizing waste ore rock and iron tailings and construction method |
| CN107022935A (en) * | 2017-04-24 | 2017-08-08 | 中交航局第工程有限公司 | A kind of roadbed punishment regeneration rubble material formula |
| CN107032706A (en) * | 2017-05-24 | 2017-08-11 | 西安汉河环保科技有限公司 | A kind of sub-surface forming method for using drift-sand for raw material |
| CN108457147A (en) * | 2018-03-21 | 2018-08-28 | 中国建筑第六工程局有限公司 | A kind of construction method of the interim sidewalk in construction site |
| CN109761552A (en) * | 2019-03-27 | 2019-05-17 | 华北水利水电大学 | It is modified to increase steady road cement mixture and preparation method thereof |
| CN111393065A (en) * | 2020-04-07 | 2020-07-10 | 东南大学 | Construction solid waste regeneration composite roadbed filler and preparation method thereof |
| CN112982050A (en) * | 2021-01-27 | 2021-06-18 | 绍兴市城投再生资源有限公司 | Regenerated roadbed base filler and regenerated roadbed construction method |
| CN113004019A (en) * | 2021-04-06 | 2021-06-22 | 王壹帆 | Pavement base mixture and preparation method thereof |
-
2007
- 2007-06-24 CN CNA2007100621914A patent/CN101265685A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345261A (en) * | 2011-07-14 | 2012-02-08 | 辽宁建工集团有限公司 | Road pavement subbase |
| CN102505682A (en) * | 2011-10-31 | 2012-06-20 | 山东鸿泰建设集团有限公司 | Building waste powder cement pile and foundation treatment method thereof |
| CN103806434A (en) * | 2014-03-09 | 2014-05-21 | 西南科技大学 | Method for processing saturated overwet soil foundation for prespud operation by using graded construction slag soilbag |
| CN103806434B (en) * | 2014-03-09 | 2016-06-01 | 西南科技大学 | A kind of level joins the method building the slag soil engineering bag front saturated over-wet soil ground of engineering of process brill |
| CN104195919A (en) * | 2014-08-27 | 2014-12-10 | 成都市容德建筑劳务有限公司 | Gravel waste sidewalk construction process |
| CN105784979A (en) * | 2014-12-17 | 2016-07-20 | 刘庆国 | Method for testing content of flat and elongated particles of roadbed filling materials produced from construction wastes |
| CN104876477A (en) * | 2015-04-10 | 2015-09-02 | 同济大学 | Stable regeneration method of cement fly-ash gravel base reclaimed material cement based on mortar content control |
| CN104876477B (en) * | 2015-04-10 | 2017-01-11 | 同济大学 | Stable regeneration method of cement fly-ash gravel base reclaimed material cement based on mortar content control |
| CN106336173A (en) * | 2016-08-17 | 2017-01-18 | 北京通汇盛通环保科技发展有限公司 | High-performance cement stabilized macadam and preparation method thereof |
| CN106336173B (en) * | 2016-08-17 | 2019-03-22 | 北京通汇盛通环保科技发展有限公司 | A kind of high performance cement stabilized macadam and preparation method thereof |
| CN106630816A (en) * | 2016-10-14 | 2017-05-10 | 鞍钢集团矿业有限公司 | Method for preparing road base mixture by utilizing waste ore rock and iron tailings and construction method |
| CN107022935A (en) * | 2017-04-24 | 2017-08-08 | 中交航局第工程有限公司 | A kind of roadbed punishment regeneration rubble material formula |
| CN107032706A (en) * | 2017-05-24 | 2017-08-11 | 西安汉河环保科技有限公司 | A kind of sub-surface forming method for using drift-sand for raw material |
| CN107032706B (en) * | 2017-05-24 | 2019-07-09 | 西安汉河环保科技有限公司 | It is a kind of to use drift-sand for the sub-surface forming method of raw material |
| CN108457147A (en) * | 2018-03-21 | 2018-08-28 | 中国建筑第六工程局有限公司 | A kind of construction method of the interim sidewalk in construction site |
| CN109761552A (en) * | 2019-03-27 | 2019-05-17 | 华北水利水电大学 | It is modified to increase steady road cement mixture and preparation method thereof |
| CN111393065A (en) * | 2020-04-07 | 2020-07-10 | 东南大学 | Construction solid waste regeneration composite roadbed filler and preparation method thereof |
| CN112982050A (en) * | 2021-01-27 | 2021-06-18 | 绍兴市城投再生资源有限公司 | Regenerated roadbed base filler and regenerated roadbed construction method |
| CN113004019A (en) * | 2021-04-06 | 2021-06-22 | 王壹帆 | Pavement base mixture and preparation method thereof |
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Open date: 20080917 |