CN102539659A - Survey humidification compaction test method for determining expansive soil dike filling compaction parameters - Google Patents
Survey humidification compaction test method for determining expansive soil dike filling compaction parameters Download PDFInfo
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- CN102539659A CN102539659A CN2012100042378A CN201210004237A CN102539659A CN 102539659 A CN102539659 A CN 102539659A CN 2012100042378 A CN2012100042378 A CN 2012100042378A CN 201210004237 A CN201210004237 A CN 201210004237A CN 102539659 A CN102539659 A CN 102539659A
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- moisture content
- dry density
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- embankment
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- 239000002689 soil Substances 0.000 title claims abstract description 62
- 238000005056 compaction Methods 0.000 title claims abstract description 33
- 238000010998 test method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims description 19
- 230000001186 cumulative effect Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 239000008239 natural water Substances 0.000 abstract 2
- 238000005553 drilling Methods 0.000 abstract 1
- 238000009736 wetting Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000007774 longterm Effects 0.000 description 3
- 241000294743 Gamochaeta Species 0.000 description 2
- 210000000476 body water Anatomy 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012899 standard injection Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a survey wetting compaction test method for determining expansive soil embankment filling compaction parameters, which comprises the following specific steps of: (1) performing drilling exploration to obtain the natural optimal water content of the expansive soil in a single hole; (2) calculating to obtain the natural optimal water content; (3) solving the maximum dry density through a standard heavy compaction test method; (4) judging the road property of the filler; (5) and (3) taking the optimal natural water content +/-2% as the compaction control water content for filling and compacting the medium and weak expansive soil filler embankment, and calculating the degree of compaction by using the maximum dry density determined in the step (3) as the basis for compacting the control dry density. According to the geological comparison method, the natural water content corresponding to the soil body with the maximum dry density in the natural expansive soil slope is used as the optimal water content for filling and compacting the expansive soil embankment, the corresponding natural soil body is adopted to carry out a standard compaction test, and the dry density obtained by the compaction test is taken as the maximum dry density for filling and compacting the expansive soil embankment.
Description
Technical field
The present invention relates to a kind of debulking methods that fills of highway swelled ground embankment, particularly relate to a kind of prospecting humidifying compaction test method of definite construction of expansive soil embankment compacting parameter.
Background technology
Swelled ground is a kind ofly to contain montmorillonite mineral and have the special soil that bad engineering characteristic is shunk in imbibition, dehydration, often has the characteristic of high natural moisture content, high liquid limit and high plastic limit, generally can not be directly fills as the embankment of highway without punishment.Adopt the bound edge measure but when depth of fill is little, (be lower than 10m), in, weak swelled ground can directly be used for filling of embankment down.Because swelled ground generally has higher natural moisture content; As by hitting optimum moisture content that real experimental technique confirms and carry out compacting with the maximum dry density parameter and construct by traditional; Often there are two problems; The one, be difficult to swelled ground is reduced to optimum moisture content from high natural moisture content, the 2nd, even dropped to optimum moisture content, swelled ground also is difficult to compacting and reaches the compaction requirement of embankment down.The existing highway subgrade construction technique normalizing (JTG-2006) of China points out, can by local soil test result adopt degree of compaction standard than general dirt road dike reduce by 1%～5% carry out the swelled ground embankment fill the compacting construction.Practice shows, even reduce degree of compaction standard 1%～5% by standard, because swelled ground often is in very hard state when optimum moisture content, still is difficult to compacting and reaches requirement.Therefore, swelled ground often goes out of use and adopts that changing bankets fills, or adopts chemical modifying method (as mixing outer-penetrating agents such as lime, cement) to punish, and this has just increased the weight of the destruction of highway construction district to physical environment.This explains that also optimum moisture content and maximum dry density parameter that conventional compaction test method is confirmed are not to be suitable for the construction of expansive soil embankment compacting very much.
Summary of the invention
There is the compacting difficulty when high natural moisture content is reduced to the difficulty of optimum moisture content and fill by optimum moisture content when carrying out construction of expansive soil embankment with the bound edge method; For solving this two technical matterss; The present invention is according to the geology method of comparing; Propose a kind of prospecting means that adopt earlier and obtained maximum dry density and the corresponding natural moisture content thereof that the nature soil body has under the weather long term in the swelled ground natural slope; Cooperate Indoor Impaction Test and standard injection in-situ test result to come the comprehensive method of confirming construction of expansive soil embankment compacting parameter again, can be described as the prospecting humidifying compaction test method of confirming construction of expansive soil embankment compacting parameter, its concrete steps are following:
(1), asks for the natural optimum moisture content of single hole of swelled ground through the boring prospecting;
(2), ask for natural optimum moisture content:, get that wherein to have the pairing natural moisture content of dry density maximal value be natural optimum moisture content with the curve map that the said single hole maximum dry density and the said single hole optimum moisture content of the natural swelled ground of each Kong Zhongtong one deck are made dry density and natural moisture content through calculating;
(3), ask maximum dry density through standard modified compaction test method: get three groups of soil samples corresponding with optimum natural moisture content respectively and carry out compaction test by standard modified compaction test method, getting dry density mean value is maximum dry density;
Character is used on the road of (4), adopting cumulative water-oil ratio and standard blow number to differentiate filler: the ground surface in having the boring position 1m scope of maximum natural dry density soil sample; Arrange that again a boring carries out continuous standard penetration test (SPT); Judge the railway embankment using intensity of this water cut state swelled ground through the standard blow number; When the cumulative water-oil ratio of soil be natural moisture content with the ratio of liquid limit less than 0.5; The standard blow number is greater than 10, available this method during (3) are confirmed set by step weak swelled ground filler fill the compacting parameter, and be used for depth of fill less than 10m at present the bound edge of embankment fill; Otherwise, need employing to mix lime, cement or other outer-penetrating agent and carry out the processing of soil property chemical modifying;
(5), compacting parameter is selected: the compacting of weak swelled ground filler Embankment Compaction Quality is controlled water cut and is calculated the foundation of compactness as compacting control dry density with the maximum dry density that step (3) is confirmed in optimum natural moisture content ± 2% being.
The natural optimum moisture content of single hole that swelled ground is asked in boring described in the above-mentioned steps (1) prospecting is meant: in same highway section, a little less than natural swelled ground slope choose two above representative sections respectively; Arrange a boring respectively at the Po Ding of each section, sloping waist and toe, hole depth is more than 6 meters; In each boring, whenever take a soil sample deeply at a distance from 0.4～0.6 meter; At indoor natural moisture content, natural density, liquid limit, plastic limit, free swelling rate and the standard suction water percentage of measuring soil sample through soil test; Calculate in each boring with the dry density of each natural soil sample in the natural swelled ground of one deck, choosing is the single hole optimum moisture content of the corresponding natural moisture content of single hole maximum dry density as this boring with the dry density of maximum wherein.
Have higher intensity and lower constrictive mechanical characteristic according to deep, the natural swelled ground slope soil body; And because its humidity and density receive the long term of local climate; When soil body dry density in the natural swelled ground with one deck is maximum; Explain that soil body water cut and the weather drying and watering cycle effect that it is corresponding adapts to (swell-shrinking deformation is minimum) the most, can be referred to as optimum natural moisture content.The present invention according to geology analogy method with the optimum moisture content of the corresponding natural moisture content of the maximum dry density soil body that has in the natural swelled ground slope as the construction of expansive soil embankment compacting; And take the with it corresponding natural soil body to carry out standard compaction test, getting the dry density that compaction test obtains is the maximum dry density of construction of expansive soil embankment compacting.Therefore, the present invention has following advantage and good effect:
Remain the natural moisture content (W of type swelled ground
0) generally between 24%～40%, optimum moisture content (W
Opt) be everlasting between 13%～19%, be everlasting between 18%～26% by the natural optimum moisture content that the present invention measures.Remain the direct filling compacting of embankment under the weak swelled ground in the type by current methods, need with tedding the natural moisture content (W of method with swelled ground
0) be reduced to optimum moisture content (W
Opt), and only need natural moisture content (W by the direct filling compacting that the inventive method is carried out the swelled ground embankment
0) be reduced to said natural optimum moisture content, because of said natural optimum moisture content near natural moisture content (W
0) but than optimum moisture content (W
Opt) high a lot, therefore, carry out filling of swelled ground embankment by the compacting parameter of filling provided by the invention, have the advantage that is prone to reduce the filler water cut; Again since swelled ground at optimum moisture content (W
Opt) time, cumulative water-oil ratio is much smaller than 0.5, and at this moment, earth material is in hardened condition and is difficult to compacting, and swelled ground is when the said natural optimum moisture content that this law provides, and cumulative water-oil ratio is near 0.5, and at this moment, earth material is in hard but near the state of moulding firmly, is easy to compacting; In addition; This law is through standard injection in-situ test and cumulative water-oil ratio analysis; Weak construction of expansive soil embankment can satisfy the subgrade strength requirement in having guaranteed to carry out with this law; Simultaneously, the swelled ground in the embankment when being in said natural optimum moisture content and climatic environment more adapt to, can reduce because of weather as far as possible and do the embankment swell-shrinking deformation that wet effect causes.
In sum, the inventive method is used for the direct filling that weak swelled ground descends embankment bound edge method, is easy to reduce water cut and be easy to compacting with the method that teds; Greatly reduce construction compacting difficulty and compacting executive cost; Thereby the weak actual utilization of swelled ground soil in embankment fills in helping increasing reduces the destruction of highway construction to physical environment, therefore; The present invention is a kind of method with better economic benefits and environmental protection effect, is particularly suitable for remaining type swelled ground geologic condition.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Have higher intensity and lower constrictive mechanical characteristic according to deep, the natural swelled ground slope soil body; And because its humidity and density receive the long term of local climate; When soil body dry density in the natural swelled ground with one deck is maximum; Explain that soil body water cut and the weather drying and watering cycle effect that it is corresponding adapts to (swell-shrinking deformation is minimum) the most, can be referred to as optimum natural moisture content.The present invention according to geology analogy method with the optimum moisture content of the corresponding natural moisture content of the maximum dry density soil body that has in the natural swelled ground slope as the construction of expansive soil embankment compacting; And take the with it corresponding natural soil body to carry out standard compaction test, getting the dry density that compaction test obtains is the maximum dry density of construction of expansive soil embankment compacting.The prospecting humidifying of definite construction of expansive soil embankment compacting parameter provided by the invention is hit real examination experimental technique, and concrete steps are following:
(1), the natural optimum moisture content of single hole of swelled ground is asked in boring prospecting: in same highway section, a little less than natural swelled ground slope choose two above representative sections respectively; Arrange a boring respectively at the Po Ding of each section, sloping waist and toe, hole depth is more than 6 meters; In each boring, whenever take a soil sample deeply at a distance from 0.4～0.6 meter; Inhale water percentage etc. in indoor natural moisture content, natural density, liquid limit, plastic limit, free swelling rate, standard through soil test mensuration soil sample; Calculate in each boring with the dry density of each natural soil sample in the natural swelled ground of one deck, choose the single hole optimum moisture content of wherein corresponding natural moisture content as this boring with the dry density (can be described as the single hole maximum dry density) of maximum;
(2), calculate and to ask for natural optimum moisture content:, get that wherein to have the pairing natural moisture content of dry density maximal value be natural optimum moisture content with the curve map that the said single hole maximum dry density and the said single hole optimum moisture content of the natural swelled ground of each Kong Zhongtong one deck are made dry density and natural moisture content;
(3), ask maximum dry density through standard modified compaction test method: get three groups of soil samples corresponding with optimum natural moisture content respectively and carry out compaction test by standard modified compaction test method, getting dry density mean value is maximum dry density;
Character is used on the road of (4), adopting cumulative water-oil ratio and standard blow number to differentiate filler: the ground surface in the boring position 1m scope with maximum (natural) dry density soil sample; Arrange that again a boring carries out continuous standard penetration test (SPT); Judge the railway embankment using intensity of this water cut state swelled ground through the standard blow number; When the cumulative water-oil ratio of the soil ratio of liquid limit (natural moisture content with) less than 0.5; The standard blow number is greater than 10, available this method during (3) are confirmed set by step weak swelled ground filler fill the compacting parameter, and be used for depth of fill less than 10m at present the bound edge of embankment fill; Otherwise, need employing to mix lime, cement or other outer-penetrating agent and carry out the processing of soil property chemical modifying;
(5), compacting parameter is selected: the compacting of weak swelled ground filler Embankment Compaction Quality is controlled water cut and is calculated the foundation of compactness as compacting control dry density with the maximum dry density that step (3) is confirmed in optimum natural moisture content ± 2% being.
Claims (2)
1. the prospecting humidifying compaction test method of a definite construction of expansive soil embankment compacting parameter, concrete steps are following:
(1), the natural optimum moisture content of single hole of swelled ground is asked in the boring prospecting;
(2), calculate and to ask for natural optimum moisture content:, get that wherein to have the pairing natural moisture content of dry density maximal value be natural optimum moisture content with the curve map that the said single hole maximum dry density and the said single hole optimum moisture content of the natural swelled ground of each Kong Zhongtong one deck are made dry density and natural moisture content;
(3), ask maximum dry density through standard modified compaction test method: get three groups of soil samples corresponding with optimum natural moisture content respectively and carry out compaction test by standard modified compaction test method, getting dry density mean value is maximum dry density;
Character is used on the road of (4), adopting cumulative water-oil ratio and standard blow number to differentiate filler: the ground surface in having the boring position 1m scope of maximum natural dry density soil sample; Arrange that again a boring carries out continuous standard penetration test (SPT); Judge the railway embankment using intensity of this water cut state swelled ground through the standard blow number; When the cumulative water-oil ratio of soil be natural moisture content with the ratio of liquid limit less than 0.5; The standard blow number is greater than 10, available this method during (3) are confirmed set by step weak swelled ground filler fill the compacting parameter, and be used for depth of fill less than 10m at present the bound edge of embankment fill; Otherwise, need employing to mix lime, cement or other outer-penetrating agent and carry out the processing of soil property chemical modifying;
(5), compacting parameter is selected: the compacting of weak swelled ground filler Embankment Compaction Quality is controlled water cut and is calculated the foundation of compactness as compacting control dry density with the maximum dry density that step (3) is confirmed in optimum natural moisture content ± 2% being.
2. the prospecting humidifying of definite construction of expansive soil embankment compacting parameter according to claim 1 is hit real experimental technique; It is characterized in that: the natural optimum moisture content of single hole that swelled ground is asked in boring described in the above-mentioned steps (1) prospecting is meant: in same highway section, a little less than natural swelled ground slope choose two above representative sections respectively; Arrange a boring respectively at the Po Ding of each section, sloping waist and toe, hole depth is more than 6 meters; In each boring, whenever take a soil sample deeply at a distance from 0.4～0.6 meter; At indoor natural moisture content, natural density, liquid limit, plastic limit, free swelling rate and the standard suction water percentage of measuring soil sample through soil test; Calculate in each boring with the dry density of each natural soil sample in the natural swelled ground of one deck, choosing is the single hole optimum moisture content of the corresponding natural moisture content of single hole maximum dry density as this boring with the dry density of maximum wherein; Character is used on the road of adopting cumulative water-oil ratio and standard blow number to differentiate filler; Promptly when the cumulative water-oil ratio ratio of liquid limit (natural moisture content with) of soil less than 0.5; The standard blow number is greater than 10; During available this method is confirmed weak swelled ground filler fill the compacting parameter, and be used for depth of fill less than 10m at present the bound edge of embankment fill.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910929A (en) * | 2016-04-08 | 2016-08-31 | 中交第二公路勘察设计研究院有限公司 | Method for testing long-term road application characteristics of soft rock filling material |
| CN106156486A (en) * | 2016-06-21 | 2016-11-23 | 长江勘测规划设计研究有限责任公司 | A kind of method that can differentiate soil expansion grade in construction of macroscopic view |
| CN106168549A (en) * | 2016-07-14 | 2016-11-30 | 三峡大学 | Compacting bentonite sample and preparation method |
| CN107476158A (en) * | 2017-09-12 | 2017-12-15 | 山东大学 | Areas formerly flooded by the Huanghe River high liquid limit clay embankment Con trolling index determines method and compaction technology |
| CN108333324A (en) * | 2017-12-22 | 2018-07-27 | 神华集团有限责任公司 | A kind of Treatment Methods for alleviating roadbed frost damage deformation using poisson effect |
| CN108982218A (en) * | 2018-07-30 | 2018-12-11 | 中国水利水电第五工程局有限公司 | The evaluation method of actual effect fruit matching degree is rolled and hit under the conditions of gravelly soil technological parameter |
| CN111089698A (en) * | 2020-03-24 | 2020-05-01 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Vibration compaction test method for railway roadbed filler |
| CN111893830A (en) * | 2020-07-27 | 2020-11-06 | 中交路桥建设有限公司 | Material selection method for weak expansive soil roadbed construction |
| CN112198089A (en) * | 2020-09-27 | 2021-01-08 | 中交路桥建设有限公司 | Lime modified expansive soil compaction test method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63307339A (en) * | 1987-06-09 | 1988-12-15 | Kensetsusho Doboku Kenkyu Shocho | Method and device for measuring degree of hardening of ground by using electromagnetic wave |
| JPH06138012A (en) * | 1992-10-26 | 1994-05-20 | Shimizu Corp | Method and device for measuring density and water content of soil |
| JPH09133627A (en) * | 1995-11-09 | 1997-05-20 | Shimizu Corp | Method and apparatus for measuring density and moisture of soil |
| CN1974956A (en) * | 2006-12-12 | 2007-06-06 | 东南大学 | Non-crack seepage control bentonite laying construction technology |
| CN101368933A (en) * | 2008-05-30 | 2009-02-18 | 重庆交通大学 | Compactness test method and compactness tester based on the same |
| CN101503884A (en) * | 2009-03-06 | 2009-08-12 | 长安大学 | Experiment method for measuring maximum dry density of highroad base material |
-
2012
- 2012-01-09 CN CN201210004237.8A patent/CN102539659B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63307339A (en) * | 1987-06-09 | 1988-12-15 | Kensetsusho Doboku Kenkyu Shocho | Method and device for measuring degree of hardening of ground by using electromagnetic wave |
| JPH06138012A (en) * | 1992-10-26 | 1994-05-20 | Shimizu Corp | Method and device for measuring density and water content of soil |
| JPH09133627A (en) * | 1995-11-09 | 1997-05-20 | Shimizu Corp | Method and apparatus for measuring density and moisture of soil |
| CN1974956A (en) * | 2006-12-12 | 2007-06-06 | 东南大学 | Non-crack seepage control bentonite laying construction technology |
| CN101368933A (en) * | 2008-05-30 | 2009-02-18 | 重庆交通大学 | Compactness test method and compactness tester based on the same |
| CN101503884A (en) * | 2009-03-06 | 2009-08-12 | 长安大学 | Experiment method for measuring maximum dry density of highroad base material |
Non-Patent Citations (4)
| Title |
|---|
| YU X.: "Soil Water Content and Dry Density by Time Domain Reflectometry", 《J. GEOTECH. GEOENVIRON. ENG.》 * |
| 刘龙武: "红粘土填料的路用性质研究", 《公路》 * |
| 缪伟: "膨胀土用作路基填料的试验方法研究", 《公路与汽运》 * |
| 陈爱军: "南友公路掺石灰改良膨胀土的承载比试验研究", 《广西交通科技》 * |
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| CN105910929A (en) * | 2016-04-08 | 2016-08-31 | 中交第二公路勘察设计研究院有限公司 | Method for testing long-term road application characteristics of soft rock filling material |
| CN106156486A (en) * | 2016-06-21 | 2016-11-23 | 长江勘测规划设计研究有限责任公司 | A kind of method that can differentiate soil expansion grade in construction of macroscopic view |
| CN106168549A (en) * | 2016-07-14 | 2016-11-30 | 三峡大学 | Compacting bentonite sample and preparation method |
| CN106168549B (en) * | 2016-07-14 | 2019-06-18 | 三峡大学 | It is compacted swelling soil sample and preparation method |
| CN107476158A (en) * | 2017-09-12 | 2017-12-15 | 山东大学 | Areas formerly flooded by the Huanghe River high liquid limit clay embankment Con trolling index determines method and compaction technology |
| CN108333324A (en) * | 2017-12-22 | 2018-07-27 | 神华集团有限责任公司 | A kind of Treatment Methods for alleviating roadbed frost damage deformation using poisson effect |
| CN108333324B (en) * | 2017-12-22 | 2021-04-02 | 神华集团有限责任公司 | Treatment method for relieving frost heaving deformation of roadbed by using Poisson effect |
| CN108982218A (en) * | 2018-07-30 | 2018-12-11 | 中国水利水电第五工程局有限公司 | The evaluation method of actual effect fruit matching degree is rolled and hit under the conditions of gravelly soil technological parameter |
| CN111089698A (en) * | 2020-03-24 | 2020-05-01 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Vibration compaction test method for railway roadbed filler |
| CN111089698B (en) * | 2020-03-24 | 2020-07-10 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Vibration compaction test method for railway roadbed filler |
| CN111893830A (en) * | 2020-07-27 | 2020-11-06 | 中交路桥建设有限公司 | Material selection method for weak expansive soil roadbed construction |
| CN112198089A (en) * | 2020-09-27 | 2021-01-08 | 中交路桥建设有限公司 | Lime modified expansive soil compaction test method |
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