CN101134661A - Cement stabilization slag used for high-grade road foundation course - Google Patents
Cement stabilization slag used for high-grade road foundation course Download PDFInfo
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- CN101134661A CN101134661A CNA2007100496416A CN200710049641A CN101134661A CN 101134661 A CN101134661 A CN 101134661A CN A2007100496416 A CNA2007100496416 A CN A2007100496416A CN 200710049641 A CN200710049641 A CN 200710049641A CN 101134661 A CN101134661 A CN 101134661A
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- slag
- cement
- titanium
- road
- road foundation
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
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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
- 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
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention discloses one kind of cement stabilizer slag for road bed of high grade highway. The cement stabilizer slag consists of cement 3-7 wt%, high titanium heavy broken slag 48.5-46.5 wt%, and high titanium heavy slag sand 48.5-46.5 wt%. The present invention utilizes high titanium heavy slag as road material, and can reduce destruction to natural environment. The road with high titanium heavy slag in the bed has high durability.
Description
Technical field
The invention belongs to solid waste comprehensive utilization technique field, relate to the high titanium type dry slag that blast-furnace smelting produces, particularly be used for the cement stabilization slag of high-grade road foundation course.
Background technology
Sub-surface is as the main bearing stratum of road structure, and the quality of its quality directly has influence on pavement performance and the work-ing life after road is open to the traffic, so high-grade highway construction has higher technical requirements to the cement stabilizing material that is used for basic unit.But, as required, adopt different stable materials and form to come stabilized base at present because the geographical conditions of various places are different with material situation.
Tradition cement stable material is generally cement stabilized soil, cement stabilized macadam soil and cement stabilizing gravelly soil etc., and these traditional cement stable materials are that cement, lime etc. is that binder is formulated with natural sand, stone, native for gathering materials.Wherein gather materials because the physical and chemical performance that is subjected to nature to form thing influences, the aggregate quality difference of different zones exploitation, the quality of the cement stabilizing material of final influence preparation, a large amount of exploitations of natural sandstone have also produced considerable damage to physical environment in addition.Along with the pay attention to day by day of country to environment protection, increasing industrial solid castoff has been widely used in the high-grade highway construction as the road construction novel material, as slag, slag etc., has produced fabulous social benefit and economic benefit.
The domestic existing practice that utilizes ordinary slag using it as road base material preparation cement stabilization slag, but because ordinary slag CaO content is higher, water-absorbent is strong, if CaO is fully dissolved, rely on surface humidity slowly to dissolve, arch bag phenomenon can appear in the road surface, thereby the destruction pavement quality reduces highway work-ing life.
High-titanium dry slag is the distinctive resource of Flos Bombacis Malabarici, compares with ordinary slag, has TiO
2Content height, CaO and SiO
2The characteristics that content is low.TiO
2Have stronger crystallizing power, the fusion high-titanium dry slag very easily forms resistant minerals such as uhligite and titanaugite with CaO reaction in process of cooling, does not generate C and do not resemble the ordinary blast slag
2The hydraulicity such as S and melilith mineral, so high-titanium dry slag self mineral structure is stable, chemical stability is good.From existing document, utilize the high-titanium dry slag preparation cement stabilization slag that gathers materials still to belong to blank, the document that relevant slag is made base material is also rare." application of Ling Gang slag using it as road base material " (fine strain of millet Yushan Lu Tsing-Hua University old morning sunlight Liaoning transport science and techonologies 2000.2) reports: slag has the bulk strength height, freezes stability and advantage such as water stability is good, easy construction and economic benefit are more remarkable as base material, and it is applicable to that relatively low-lying sough and rainfall circle are at area and weak soil campaign base." the high-titanium blast furnace slag rubble is used as the research of concrete aggregate " (all rising sun steel vanadium titanium-2001.22 (4) .-43-46) report: steel climbing high slag TiO2 content is more than 15%, have than big-difference with the composition structure of ordinary blast slag, the property research of high-titanium blast furnace slag and be used for the test explanation of concrete, the high-titanium blast furnace slag Stability Analysis of Structures, its rubble is used as the concrete aggregate and compares with common rubble, a little higher than latter of ultimate compression strength and split tensile strength.The former uses the physicochemical property of slag own different fully with high-titanium dry slag, and the latter then is that Application Areas is with obviously different to the material technology requirement.Look into that newly showing gathers materials with high-titanium blast furnace slag does not at present not prepare the precedent of cement stabilization slag.
Climb the steel high titanium blast furnace slag and be subjected to the restriction of own characteristic, can not be utilized in a large number.Since going into operation, accumulated and stacked more than 5,000 ten thousand tons of high titanium blast furnace slags, take up an area of 40 surplus ten thousand square metres, and annual speed with about 3,500,000 tons increases, therefore, steel is climbed in the multi-faceted development and use of multipath, and to contain titanium blast furnace slag be the task of top priority.
Summary of the invention
For soundness, the stability of utilizing high-titanium dry slag to gather materials, seek the new approach that utilizes for the high titanium type dry slag, reduce the destruction of highway engineering materials simultaneously to physical environment, the invention provides a kind of cement stabilization slag that is used for high-grade road foundation course.
The described cement stabilization slag that is used for high-grade road foundation course comprises cement, high-titanium dry slag rubble, high-titanium dry slag sand, and each composition weight percent is cement 3%～7%; High-titanium dry slag rubble 48.5%～46.5%; High-titanium dry slag sand 48.5%～46.5%.
Select different cement stabilization slags to cooperate cement brand when according to different construction requirements and pavement grade.
In the design of cement stabilization slag proportioning, because single slag rubble can't satisfy the grain composition requirement of basic unit, according to JTJO34 " highway road surface construction technique normalizing ",, in 5～31.5mm slag rubble, need mix a certain proportion of 0～5mm slag sand in order to reach good grating.By size analysis, when both respectively accounted for 50%, grain composition met the demands.In addition, with described raw material according to the proportioning weighing after, add the water yield of regulation, mixed grind is even, discharging.
The present invention bases oneself upon local resources, with high-titanium dry slag rubble, high-titanium dry slag sand for gathering materials, cement is binder, the gather materials cement stabilization slag of preparation of high-titanium dry slag that utilizes that carries out according to national regulation that proportioning designs is applied to high-grade road foundation course, have good integrity, be easy to roller-compaction, no lateral confinement intensity height, advantages such as resistance capacity to deformation is strong are a kind of fine highway stabilizing layer materials.Under the condition that satisfies design strength and flexure, adopting this novel concrete stabilization slag to make stabilizing layer can attenuate Laminate construction thickness and saving cement consumption.Simultaneously (1), compare with traditional cement stable material, the novel concrete stabilization slag among the present invention is applied to high-grade highway to have and improves the highway total quality, prolongs highway work-ing life, can reduce characteristics such as construction costs and maintenance cost; (2), partly solve the problem of complex utilization of steel climbing high slag, open up new approach, reduced blast furnace slag and piled up pollution on the environment for the high-titanium blast furnace slag recycling; (3), for road construction has searched out the new source of highway structure material, reduced the destruction of road construction materials supply to physical environment, effect is remarkable aspect environment protection, has remarkable economic efficiency and social benefit.
Embodiment
The typical chemical ingredients of high titanium type dry slag sees Table 1.
The chemical ingredients (wt%) of table 1 high-titanium dry slag rubble, slag sand
| Composition | Al 2O 3 | CaO | Fe 2O 3 | K 2O | MgO | Na 2O | SiO 2 | TiO 2 | V 2O 5 |
| Content | 14.12 | 27.12 | <0.5 | 2.8 | 8.31 | / | 23.46 | 22.14 | 0.42 |
With reference to of the requirement of express highway pavement foundation design to material, according to road bearing capacity difference, cross gold thread, the little main road of Renhe District and climb the cold rolling plant area of steel highway and selected a highway section to carry out the cement stabilization slag constructing road foundation respectively at Panzhihua City, wherein cross gold thread, the little big supercrust of Renhe District is a bituminous concrete, climbing the cold rolling plant area of steel road layer is cement concrete.
Construction process shows: because the uniformity of slag own is better, construction is more convenient than natural rubble, easily becomes plate body, the intensity height, and because slag and slag sand density are bigger, coefficient of loose laying is much smaller than the cement stabilizing gravelly soil, and cement stabilization slag basic unit has preferably easily compactibility, and the material plasticity index is little, behind the grinding compacting, shrinkage strain is little, and shows good water stability, does not find to differ from normal situation in the construction process.
By in this year to the continuous observation in these highway sections of having completed, find to use the disconnected plate situation of cement pavement sedimentation of novel concrete stabilization slag of the present invention few, use the rutting resistance height of the bituminous concrete pavement of novel concrete stabilization slag, the rut vestige is not obvious.And the bituminous pavement and the stabilized base in these highway sections carried out core boring sampling, each the core oil mat that drills through all is connected fully with the cement stabilizing layer, does not see that layering comes off.Investigation shows: utilize high-titanium dry slag be gather materials the preparation the novel stabilising slag have good result of use, endurance quality is good.
Embodiment 1: cement stabilization slag basic unit proportioning, result and core boring sampling detected result that gold thread uses see Table 2, table 3 crossing.
Table 2 cement stabilization slag basic unit cooperates result when
| Construction layer | Material usage (%) | Maximum dry density (g/cm 3) | Optimum moisture content (%) | 7d unconfined compression strength (MPa) | Standard deviation (MPa) | Z-factor (%) | Compression rebound modulu (103MPa) | ||
| Cement | The slag rubble | Slag sand | |||||||
| Basic unit | 3 | 48.5 | 48.5 | 2.39 | 6.7 | 3.5 | 0.23 | 6.6 | 4.3 |
Table 3 basic unit core boring sampling detected result
| Test item | Amount detection | Design load | Detected value |
| Intensity (MPa) | 6 groups | >3.0 | 3.8 |
| Compactness (%) | 10 places | >98 | 98.2 |
| Flexure 1/100mm | 80 points | <33.5 | 32.8 |
| Thickness (cm) | 8 places | 30 | 20.2 |
| Planeness (mm) | 6 places | <12 | ?11 |
Embodiment 2: cement stabilization slag proportioning, result and the core boring sampling detected result of using at the little main road of Panzhihua City Renhe District sees Table 4, table 5.
Table 4 cement stabilization slag basic unit cooperates result when
| Construction layer | Material usage (%) | Maximum dry density (g/cm 3) | Optimum moisture content (%) | 7d unconfined compression strength (MPa) | Standard deviation (MPa) | Z-factor (%) | Compression rebound modulu (103MPa) | ||
| Cement | The slag rubble | Slag sand | |||||||
| Basic unit | 5 | 47.5 | 47.5 | 2.41 | 7.5 | 5.6 | 0.45 | 8.1 | 6.7 |
Table 5 basic unit core boring sampling detected result
| Test item | Amount detection | Design load | Detected value |
| Intensity (MPa) | 6 groups | >3.0 | 6.1 |
| Compactness (%) | 10 places | >98 | 98.9 |
| Flexure 1/100mm | 80 points | <33.5 | 32.6 |
| Thickness (cm) | 8 places | 30 | 29.6 |
| Planeness (mm) | 6 places | <12 | 10 |
Embodiment 3: see Table 6 in the cement stabilization slag proportioning of climbing the cold rolling plant area of steel open-road applications, result and core boring sampling detected result, table 7.
Table 6 cement stabilization slag basic unit cooperates result when
| Construction layer | Material usage (%) | Close (the g/cm of maximum dry 3) | Measure good water content (%) | 7d unconfined compression strength (MPa) | Standard deviation (MPa) | Z-factor (%) | Compression rebound modulu (103MPa) | ||
| Cement | The slag rubble | Slag sand | |||||||
| Basic unit | 7 | 46.5 | 46.5 | 2.38 | 8.0 | 7.2 | 0.32 | 7.0 | 7.8 |
Table 7 basic unit core boring sampling detected result
| Test item | Amount detection | Design load | Detected value |
| (intensity (MPa) | 6 groups | >3.0 | 7.5 |
| Compactness (%) | 10 places | >98 | 99.1 |
| Flexure 1/100mm | 80 points | <33.5 | 31.2 |
| Thickness (cm) | 8 places | 30 | 18.4 |
| Planeness (mm) | 6 places | <12 | 10 |
Claims (3)
1. the cement stabilization slag that is used for high-grade road foundation course carries out the proportioning design according to national regulation, it is characterized in that it is made up of cement, high-titanium dry slag rubble, high-titanium dry slag sand.
2. the cement stabilization slag that is used for high-grade road foundation course according to claim 1 is characterized in that, each composition weight percent is cement 3%～7%; High-titanium dry slag rubble 48.5%～46.5%; High-titanium dry slag sand 48.5%～46.5%.
3. the cement stabilization slag that is used for high-grade road foundation course according to claim 1 and 2 is characterized in that, the high-titanium dry slag ballast grain sizes is 5～31.5mm, and the high-titanium dry slag sand particle diameter is 0～5mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100496416A CN100556847C (en) | 2007-07-26 | 2007-07-26 | The cement stabilization slag that is used for high-grade road foundation course |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100496416A CN100556847C (en) | 2007-07-26 | 2007-07-26 | The cement stabilization slag that is used for high-grade road foundation course |
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| Publication Number | Publication Date |
|---|---|
| CN101134661A true CN101134661A (en) | 2008-03-05 |
| CN100556847C CN100556847C (en) | 2009-11-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329113A (en) * | 2011-07-15 | 2012-01-25 | 攀枝花学院 | Composite high titanium and dry slag pavement concrete and preparation method thereof |
| CN106316287A (en) * | 2016-08-18 | 2017-01-11 | 大连地拓重工有限公司 | Method for preparing comprehensively stabilized pavement base material with iron tailings and waste rocks |
| CN109020338A (en) * | 2018-09-12 | 2018-12-18 | 哈尔滨工业大学 | A kind of cement stabilized type iron tailings sand base material design method |
| CN113185195A (en) * | 2021-04-28 | 2021-07-30 | 中建五局土木工程有限公司 | Improved composite roadbed filling and preparation method thereof |
| CN114940806A (en) * | 2022-05-18 | 2022-08-26 | 深圳市建交新材料科技有限公司 | Reactive asphalt repair material and preparation method thereof |
-
2007
- 2007-07-26 CN CNB2007100496416A patent/CN100556847C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329113A (en) * | 2011-07-15 | 2012-01-25 | 攀枝花学院 | Composite high titanium and dry slag pavement concrete and preparation method thereof |
| CN102329113B (en) * | 2011-07-15 | 2013-01-02 | 攀枝花学院 | Composite high titanium and dry slag pavement concrete and preparation method thereof |
| CN106316287A (en) * | 2016-08-18 | 2017-01-11 | 大连地拓重工有限公司 | Method for preparing comprehensively stabilized pavement base material with iron tailings and waste rocks |
| CN109020338A (en) * | 2018-09-12 | 2018-12-18 | 哈尔滨工业大学 | A kind of cement stabilized type iron tailings sand base material design method |
| CN109020338B (en) * | 2018-09-12 | 2021-01-22 | 哈尔滨工业大学 | Design method of cement-stabilized iron-like tailing sand base material |
| CN113185195A (en) * | 2021-04-28 | 2021-07-30 | 中建五局土木工程有限公司 | Improved composite roadbed filling and preparation method thereof |
| CN114940806A (en) * | 2022-05-18 | 2022-08-26 | 深圳市建交新材料科技有限公司 | Reactive asphalt repair material and preparation method thereof |
| CN114940806B (en) * | 2022-05-18 | 2023-07-25 | 深圳市建交新材料科技有限公司 | Reactive asphalt repair material and preparation method thereof |
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| Publication number | Publication date |
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| CN100556847C (en) | 2009-11-04 |
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