CN105152580A - Hydraulic asphalt concrete antiseepage material with large particle size - Google Patents
Hydraulic asphalt concrete antiseepage material with large particle size Download PDFInfo
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- CN105152580A CN105152580A CN201510466777.1A CN201510466777A CN105152580A CN 105152580 A CN105152580 A CN 105152580A CN 201510466777 A CN201510466777 A CN 201510466777A CN 105152580 A CN105152580 A CN 105152580A
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Abstract
The invention discloses a hydraulic asphalt concrete antiseepage material with a large particle size and a a rock-fill dam constructed therefrom. The antiseepage material mineral aggregate grading index is 0.38, the maximum aggregate particle size in the mineral aggregate is 26.5mm, and the asphalt-aggregate ratio of the antiseepage material asphalt usage amount is 6.5%. The material can meet the requirement of the rolling type asphalt concrete core technology standard, in practical engineering, the hydraulic asphalt concrete antiseepage material with a large particle size can raise bearing capability of the heated bitumen mixture, rolling apparatuses used for construction of the rolling type asphalt concrete core and transitional materials at two sides are unified, cost of the rolling type asphalt concrete core construction equipment, workloads of maintenance and management, and construction cost of the rolling type asphalt concrete core engineering are reduced. The spreading thickness in rolling type asphalt concrete core construction is increased, daily construction intensity of the rolling type asphalt concrete core construction is increased, and a technology support for the rolling type asphalt concrete core engineering construction progress is provided.
Description
Technical field
The invention belongs to construction engineering technical field, especially belong to water conservancy and hydropower water retaining structure construction engineering technical field, the core wall rockfill dam of particularly compaction type asphalt concrete seepage prevention material and construction thereof in Hydraulic and Hydro-Power Engineering water retaining structure.
Background technology
Rather extensive in China's compacted asphaltic core rock fill dam application at present, especially comparatively large for Seismic Design earthquake intensity, geologic condition is poor, have deep covering layer, when being not suitable for building other dam type, compacted asphaltic core dam is undoubtedly optimal selection, and its good shock resistance, barrier properties are run engineering verification.But during compacted asphaltic core engineering construction, usual meeting is according to the characteristic of asphalt concrete material, adopt the form of construction work of heat construction, it is larger that this makes compacted asphaltic core engineering construction climate condition affect, thus affect the construction speed of engineering entirety, building compacted asphaltic core rock fill dam with rainy, cold, high altitude localities affects particularly evident, on the other hand, because of the restriction of hot asphalt mixture bearing capacity, asphaltic concrete core wall rolling apparatus needs 2 tons of special light-duty vibratory rollers, correspondingly increase the expense of preparation of construction in compacted asphaltic core construction process and the workload of maintenance and management, add the construction cost of compacted asphaltic core engineering, how can ensure the construction speed of compacted asphaltic core, the cost of compacted asphaltic core construction can be reduced again, become a key technical problem of compacted asphaltic core rock-fill dam construction design.
Compacted asphaltic core rock fill dam asphalt concrete seepage prevention material used maximum diameter of aggrogate is generally≤19mm; at home (temperature more than 0 DEG C; non-rainy seasons etc., construction did not need to take any safeguard procedures) under condition; every workday paves at most 2 layers; every layer of paving thickness usually≤30cm, compacted depth is≤28cm.The present invention once carried out following test in place in cold, high altitude localities: do not change material (maximum diameter of aggrogate 19mm), use original preparation of construction (employing is less than 1.5t asphaltic concrete core wall special small vibratory roller), increase bituminous concrete paving thickness to 35cm, test-results fails to reach the effect improving compacted asphaltic core day construction intensity, ensure construction speed.
A kind of Large stone hydraulic asphalt concrete anti-seepage material of institute of the present invention publicity, it is the various factors that analysis and research affect asphalt concrete construction progress, draw the maximum diameter of aggrogate (maximum diameter of aggrogate increases to 26.5mm by the 19mm of routine) increasing asphalt concrete seepage prevention material, increase hot asphalt mixture bearing capacity, reach and increase bituminous concrete paving thickness (increasing to 35cm by current 30cm), improve compacted asphaltic core day construction intensity, ensure the object of compacted asphaltic core engineering construction progress, lay the foundation for probing into compacted asphaltic core engineering construction new technology further.
Summary of the invention
The present invention discloses the rock fill dam of a kind of Large stone hydraulic asphalt concrete anti-seepage material and construction thereof according to the deficiencies in the prior art.The problem to be solved in the present invention is to provide a kind of impervious material composition met needed for water conservancy project compacted asphaltic core rock-fill dam construction, present invention also offers the rock fill dam adopting above-mentioned impervious material to build.
The present invention is achieved through the following technical solutions:
Provide firstly a kind of Large stone hydraulic asphalt concrete anti-seepage material.
Described impervious material is mixed by mineral aggregate and pitch, it is characterized in that: described impervious material mineral aggregate gradation index is: 0.38, and in mineral aggregate, maximum diameter of aggrogate is: 26.5mm, and the bitumen aggregate ratio of impervious material asphalt content is: 6.5%.
Described mineral aggregate is made up of each size particle materials of following gradation composition;
The compacted asphaltic core rock fill dam that the above-mentioned impervious material of employing provided by the invention is built, described rock fill dam comprise: Large stone asphalt-concrete core wall, dam shell, transition layer between asphaltic concrete core wall both sides and dam shell.Described asphalt-concrete core wall is that above-mentioned impervious material is mixed through heat, paves, rolled and build up; Paving thickness is 35cm, rolls to adopt and to construct identical rolling apparatus with both sides Transition Materials.
The above-mentioned water conservancy project compacted asphaltic core rock-fill dam construction impervious material that the present invention adopts, it be meet construction technique for roller asphalt concrete core requirement, there is better barrier properties, Large stone hydraulic asphalt concrete anti-seepage material that adaptive deformation ability is strong.The present invention makes full use of the good barrier of hydraulic asphalt concrete anti-seepage material, and the impervious material adopted adds hot asphalt mixture bearing capacity, meets the strength and deformation performance requriements of Structural Design.Impervious material of the present invention is adopted to build rock fill dam, compacted asphaltic core and both sides Transition Materials can be unified to construct the rolling apparatus used, the workload reducing the expense of preparation of construction in compacted asphaltic core construction process, maintenance and manage, reduces compacted asphaltic core Construction Cost; The paving thickness of compacted asphaltic core construction of the present invention is 35cm, can improve the day construction intensity of compacted asphaltic core construction largely, for ensureing that compacted asphaltic core engineering construction progress provides technical support.
Impervious mix parameter of the present invention is: grading index, maximum diameter of aggrogate, amount of filler and asphalt content.
Grading index is the constant during grading of aggregate calculates, and grading of aggregate represents the size of each size particle materials in aggregate and the percent of pass by corresponding sieve aperture thereof; Maximum diameter of aggrogate is the maximum particle diameter value of mineral aggregate; Amount of filler is the mass percent that filler accounts for mineral aggregate; Asphalt content is the per-cent that pitch accounts for mineral aggregate quality, i.e. bitumen aggregate ratio.
The grading index of Large stone hydraulic asphalt concrete anti-seepage material of the present invention is: 0.38, and maximum diameter of aggrogate is: 26.5mm, and amount of filler is: 12%, and bitumen aggregate ratio is: 6.5%.
Described Large stone hydraulic asphalt concrete anti-seepage material is mixed according to certain mass ratio and oilstone specific heat by mineral aggregate and pitch, paves, rolls and form.Mineral aggregate comprises coarse aggregate, fine aggregate, filler.The aggregate that in mineral aggregate, particle diameter is greater than 2.36mm is called coarse aggregate, and particle diameter is that the aggregate of 0.075mm ~ 2.36mm is called fine aggregate, and the mineral powder material that particle diameter is less than 0.075mm is called filler.
The present invention is detected by Practical Project, barrier properties is carried out to impervious material, water stability, bending resistance, tension, resistance to compression, triaxiality can test, verify the practicality of Large stone hydraulic asphalt concrete anti-seepage material of the present invention, and by the porosity of asphalt shaping test piece that measures different mixture ratio, cleavage strength and splitting displacement, study the advantage of impervious material of the present invention.
The invention has the beneficial effects as follows: Large stone hydraulic asphalt concrete anti-seepage material property testing result of the present invention proves that material of the present invention meets the requirement of compacted asphaltic core technological standard.In practical engineering application, Large stone hydraulic asphalt concrete anti-seepage material of the present invention can improve the bearing capacity of hot asphalt mixture greatly, unify compacted asphaltic core and both sides Transition Materials to construct the rolling apparatus used, reduce the expense of preparation of construction in compacted asphaltic core construction process, decrease maintenance and the workload of management, reduce the construction cost of compacted asphaltic core engineering simultaneously; Larger compacted asphaltic core construction paving thickness, can improve the day construction intensity of compacted asphaltic core, for ensureing that compacted asphaltic core engineering construction progress provides technical support.
Embodiment
Below by embodiment, the present invention is specifically described; embodiment is only for being further detailed the present invention; can not be interpreted as limiting the scope of the invention, some nonessential improvement that those skilled in the art's content according to the present invention is made and adjustment also belong to the scope of protection of the invention.
The present invention is when practical engineering application, first qualification test is carried out to coarse aggregate, fine aggregate, filler and pitch in engineering plan starting material, after qualification result meets standard-required, carry out the test of Proportional Ratio of Large stone hydraulic asphalt concrete anti-seepage material of the present invention; According to proportioning of the present invention, carry out indoor processability test and complete the mensuration of respective performances index; Finally carry out engineering site technology to pave test.
Large stone hydraulic asphalt concrete anti-seepage material of the present invention is mixed by mineral aggregate and pitch, and impervious material grading index is: 0.38, and in mineral aggregate, maximum diameter of aggrogate is: 26.5mm, and the bitumen aggregate ratio of impervious material asphalt content is: 6.5%.
Mineral aggregate is made up of each size particle materials of following gradation composition;
The compacted asphaltic core rock fill dam that impervious material of the present invention is built comprise Large stone asphalt-concrete core wall, dam shell, transition layer between asphaltic concrete core wall both sides and dam shell, and asphalt-concrete core wall the invention described above impervious material is mixed through heat, paves, rolled and build up; Paving thickness is 35cm, rolls to adopt and to construct identical rolling apparatus with both sides Transition Materials.
Conventional particle size bituminous concrete and Large stone mixture ratio of asphalt concrete of the present invention, Stock allotment right and performance test results thereof as follows:
The starting material of table 1 two kinds of hydraulic asphalt concrete anti-seepage material mix proportions and grit level parameter thereof
Table 2 two kinds of hydraulic asphalt concrete anti-seepage material mix proportions, mineral aggregate gradations
Table 3 two kinds of Large stone bituminous concrete hydraulic anti-seepage material property testing Comparative result
Bituminous concrete both sides transition layer: rockfill dam with asphalt concrete core comprises asphaltic concrete core wall, dam shell, transition layer between asphaltic concrete core wall both sides and dam shell.Buffer layer material adopts rubble or sandy gravel, and requires fine and close, hard, weathering resistance, resistant to corrosion, continuously, maximum particle diameter is no more than 80mm to grain composition, and the content being less than 5mm particle diameter is 25% ~ 40%, is less than 0.075mm particle size content and is no more than 5%.Transition layer should meet the transition request be out of shape between asphaltic concrete core wall and dam shell, and has good drainage and osmotic stability, has the bearing capacity meeting construction requirement.
During the construction of conventional particle size bituminous concrete (maximum diameter of aggrogate is 19mm) core wall rockfill dam, core-wall both sides Transition Materials adopts the small vibrating of less than 3.0 tons to roll, and asphalt adopts the special vibrating being less than 1.5 tons to grind.
Compacted asphaltic core dam is built in High aititude, cold, area of heavy rainfull, the method that single increase paving thickness improves production intensity can not meet the requirement of asphaltic concrete core wall construction quality, the present invention, by increasing bituminous concrete maximum diameter of aggrogate, increasing bituminous mixture laying thickness, adopts the small vibrating rolling less than 3.0 tons of same model with Transition Materials to roll and all can meet every technical requirements of constructing in construction.
Claims (3)
1. a Large stone hydraulic asphalt concrete anti-seepage material, described impervious material is mixed by mineral aggregate and pitch, it is characterized in that: described impervious material mineral aggregate gradation index is: 0.38, and in mineral aggregate, maximum diameter of aggrogate is: 26.5mm, and the bitumen aggregate ratio of impervious material asphalt content is: 6.5%.
2. Large stone hydraulic asphalt concrete anti-seepage material according to claim 1, is characterized in that: described mineral aggregate is made up of each size particle materials of following gradation composition;
3. the compacted asphaltic core rock fill dam built of impervious material, is characterized in that: described rock fill dam comprise Large stone asphalt-concrete core wall, dam shell, transition layer between asphaltic concrete core wall both sides and dam shell.Described asphalt-concrete core wall is mixed through heat by impervious material described in claim 1 or 2, pave, roll and build up; Paving thickness is 35cm, rolls to adopt and to construct identical rolling apparatus with both sides Transition Materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510466777.1A CN105152580A (en) | 2015-07-31 | 2015-07-31 | Hydraulic asphalt concrete antiseepage material with large particle size |
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| CN201510466777.1A CN105152580A (en) | 2015-07-31 | 2015-07-31 | Hydraulic asphalt concrete antiseepage material with large particle size |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854142A (en) * | 2021-01-15 | 2021-05-28 | 西安理工大学 | Rolling type asphalt concrete core wall construction method under complex climate condition |
| CN113213814A (en) * | 2021-05-14 | 2021-08-06 | 河南中交路通工程监理咨询有限公司 | Preparation method of large-particle-size asphalt concrete |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2183601C1 (en) * | 2001-01-23 | 2002-06-20 | Багинский Николай Тимофеевич | Mineral-organic binding material |
| CN101376578A (en) * | 2008-10-09 | 2009-03-04 | 中国水利水电第五工程局有限公司 | Hydraulic asphalt concrete |
| CN102493402A (en) * | 2011-11-30 | 2012-06-13 | 中水东北勘测设计研究有限责任公司 | Insertion type vibration rolling construction method of asphalt concrete core of earth and rockfill dam |
| CN102864758A (en) * | 2012-10-22 | 2013-01-09 | 安蓉建设总公司 | Construction method of rolling compaction type asphalt concrete impervious core wall in high altitude and cold areas |
| CN102875059A (en) * | 2012-10-31 | 2013-01-16 | 中国水电顾问集团北京勘测设计研究院 | Modified asphalt concrete for impervious layer in severe cold environment and construction method of modified asphalt concrete |
-
2015
- 2015-07-31 CN CN201510466777.1A patent/CN105152580A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2183601C1 (en) * | 2001-01-23 | 2002-06-20 | Багинский Николай Тимофеевич | Mineral-organic binding material |
| CN101376578A (en) * | 2008-10-09 | 2009-03-04 | 中国水利水电第五工程局有限公司 | Hydraulic asphalt concrete |
| CN102493402A (en) * | 2011-11-30 | 2012-06-13 | 中水东北勘测设计研究有限责任公司 | Insertion type vibration rolling construction method of asphalt concrete core of earth and rockfill dam |
| CN102864758A (en) * | 2012-10-22 | 2013-01-09 | 安蓉建设总公司 | Construction method of rolling compaction type asphalt concrete impervious core wall in high altitude and cold areas |
| CN102875059A (en) * | 2012-10-31 | 2013-01-16 | 中国水电顾问集团北京勘测设计研究院 | Modified asphalt concrete for impervious layer in severe cold environment and construction method of modified asphalt concrete |
Non-Patent Citations (2)
| Title |
|---|
| 冯英杰: "《土木工程材料》", 31 March 2014, 国防工业大学出版社 * |
| 叶永等: "基于正交试验的沥青混凝土防渗性影响因素评价", 《人民长江》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854142A (en) * | 2021-01-15 | 2021-05-28 | 西安理工大学 | Rolling type asphalt concrete core wall construction method under complex climate condition |
| CN113213814A (en) * | 2021-05-14 | 2021-08-06 | 河南中交路通工程监理咨询有限公司 | Preparation method of large-particle-size asphalt concrete |
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Application publication date: 20151216 |