CN101806032A - Treated chlorine saline soil and method for using same as roadbed and roadbase - Google Patents
Treated chlorine saline soil and method for using same as roadbed and roadbase Download PDFInfo
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- CN101806032A CN101806032A CN 201010152639 CN201010152639A CN101806032A CN 101806032 A CN101806032 A CN 101806032A CN 201010152639 CN201010152639 CN 201010152639 CN 201010152639 A CN201010152639 A CN 201010152639A CN 101806032 A CN101806032 A CN 101806032A
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Abstract
The invention discloses treated chlorine saline soil and a method for using the treated chlorine saline soil as a roadbed and a roadbase. The method comprises the following steps of: (1) preparing materials; (2) air-curing and crushing the chlorine saline soil taken on site; (3) taking a chlorine saline soil sample and determining the content of chlorine salt in the soil sample; (4)preparing composite soil by adopting 4-10% of lime, 2-6% of cement and 84-94% of chlorine saline soil or adopting 6-10% of lime, 6-10% of coal ash and 80-88% of chlorine saline soil; (5) uniformly mixing the soil on each layer according to the determined proportion and constituents and determining water-spraying amount to lead the soil to reach optimal water content; (6)on-site spreading, rolling and compressing; and (7)after each layer is rolled and compressed, laying a layer of mixture after water-sprinkling maintenance. The method achieves the purposes of utilizing the on-site materials, avoiding repetition and waste, and improving the strength of the roadbed and the roadbase as well as water stability.
Description
Technical field
The present invention relates to a kind of chlorine salinized soil punishment technology, the invention particularly relates to a kind of application technology of punishing the chlorine salinized soil as road foundation and basic unit.
Background technology
The chlorine salinized soil is the special soil of environmental sensitivity, and its engineering properties is with water, thermal environment and different.It is that with non-salinized soil different the former contains more salt, and under moisture and Temperature Influence, the variation of phase and quantity can take place the salt in the soil (especially ease of solubility crystal salt), makes salinized soil have unsettled Structural Engineering characteristic.
For medium salting soil and strong saline soil area, the salination of soil chlorine is the main mode that the advanced road roadbed lost efficacy, and also is the one of the main reasons that causes that advanced road destroys, and is very big to the harmfulness of road project.Its index of plasticity of chlorine salinized soil is big, the salt content height, if directly as roadbed filling, road is easy to generate corrosion; During immersion, roadbed settlement, intensity significantly descends, and early damage appears in flexible pavement; When temperature or humidity changed, salt will take place and expand in salinized soil, soil body surface structure was destroyed and loose, disease such as cause that the road surface arch splits, curb and side slope are degraded.
Roadbed is as the main bearing course on road surface, and its quality directly influences the functional performance and the application life on road surface.Therefore, build advanced road at the chlorine saline soil area, choose the punishment measure of a kind of technical feasibility, economical rationality, improvement chlorine salinized soil is the key that is related to protection environment and arable land, reduces construction costs.
Advanced road is in the fast development of saline soil area, many new problems are occurred thereupon, at present the understanding of engineering bound pair salinized soil is also perfect not to the utmost, needs further practice accumulation and theoretical research, the technical data value that provides truly, gears to actual circumstances for the salinized soil disease control.
Consider chlorine stain soil and other regional sulfuric acid salinized soil different qualities, rationally utilize local chlorine salinized soil as roadbed filling, further investigation chlorine steeps native raw material, mechanical property, pavement performance, reinforcement mechanism, micro-analysis and separation layer punishment technology, take inorganic binder and separation layer disposal technology comprehensively to punish scheme, improve its engineering properties at bad hydrogeological environment, thus the technical data value that provides truly, gears to actual circumstances for the disease control of chlorine salinized soil.To rational exploitation and utilization salinized soil resource, the safety that improves engineering and durability, reduction construction costs, have important economic benefit and social benefit.
Aspect the experimental study of salinized soil roadbed, former Soviet Studies level is high, and relatively abundanter and system maintains the leading position in the world.Aspect the improvement of brining ground foundation, knock gently sarnoff etc. utilizes industrial waste, mineralized water etc. that brining ground foundation was carried out chemical modifying.Also adopting pre-immersion method to carry out ground in addition handles.Ba Gannuofu has also reported job practices, facility, construction experience and the method for testing etc. that adopt all kinds castinplace pile and preformed pile at saline soil area.Bie Teluxin has done comprehensive summary and explanation to the various reinforcement means of salinized soil roadbed.Other is, aspect the intensity and deformation properties of the rheological equationm of state of the anti-corrosion measure of engineering investigation characteristics, basis and the ground facility of salinized soil and salinized soil and salt marsh frozen soil, also carries out many work.
Canadian J.F. Nixon (Nixon) and G. row nurse (Lem) were also studied the creep and the intensity of fine grained frozen soil: the H.D. Bo Laisai (Blaser) of the U.S. and O.J. Si Qiele (Scherer) have studied the rule that the contains sodium sulfate salinized soil expands under different moisture content, interstitial water salinity, clay mineral content and dry unit weight condition.V. Ka Erbofu (Karpov) and Y. not sharp (Velli) and D. match result (Sego) and T. Schutz (Schuttz) also all once carried out overtesting research to salinized soil intensity and the deformation properties that freezes.
In recent years, countries such as U.S., day, moral, South Africa have carried out profound exploitation to the reclamation technology, technical level has obtained significant progress, the material of conditioned soil is upgraded to the new product that is used for reinforcing soil specially---soil reinforcement agent by original single lime, cement, flyash etc., owing to the cost reason, its application remains further to be promoted.
China mainly carries out at the northwest landlocked saline soil the research of salinized soil roadbed, and is primarily aimed at the sulfuric acid salinized soil, and research is many from agriculture angle, and with it as roadbed filling, the research of engineering propertiess such as its physics, mechanics, chemistry is still lacked.
Yet, it is very big that the engineering properties of salinized soil is influenced by region, the salinized soil engineering properties difference of the different great soil groups in different regions is bigger, even the salinized soil character of strand and coastal region is closely not identical yet, can use for reference the different regions successful experience, but can not indiscriminately imitate a kind of pattern, can not apply mechanically the not proportioning in area simply; Want the engineering properties of subregion research salinized soil, study according to local conditions.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, an a kind of part that makes chlorine salinized soil after the improvement become roadbed or basic unit is provided, intensity and water stability satisfy the requirement of road foundation and basic unit, and make its be applied to after the punishment in the saline soil area road the chlorine salinized soil and as the application process of road foundation and basic unit.
Chlorine salinized soil after the punishment of the present invention, it comprises the composite soil that chlorine salinized soil and auxiliary material are formed.
What the present invention relates to a kind ofly adopts chlorine salinized soil after the punishment as the application process of road foundation and basic unit, and it may further comprise the steps:
(1) gets the raw materials ready, comprise chlorine salinized soil, cement, flyash, lime;
(2) the chlorine salinized soil that the scene is got carries out airing, pulverizing;
(3) get chlorine salinized soil soil sample, determine the quality percentage composition of the villaumite in the chlorine salinized soil;
(4) preparation composite soil, its compositions comprises by percentage to the quality: adopt the chlorine salinized soil of the cement of lime, 2-6% of 4-10% and 84-94% or the lime, the flyash of 6-10%, the chlorine salinized soil of 80-88% of employing 6-10% when 1.1%≤villaumite mass content≤1.5% when 1.5%＜villaumite mass content≤3.2%;
(5) with each layer soil in above-mentioned definite ratio and component uniform mixing, determine the optimum moisture content and the maximum dry density of composite soil and measure its natural moisture content, by the difference of natural moisture content and optimum moisture content, determine water-spraying amount, make it reach optimum moisture content;
(6) scene is paved and is rolled, and roadbed processing layer compaction Control is more than 95%, and subbase, compactness of subbase are controlled at more than 98%;
(7) after each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.
Lime of the present invention, cement, it is poor that flyash reinforcing chlorine salinized soil improves existing chlorine salinized soil water stability greatly, shortcomings such as intensity is low, satisfy the requirement of road foundation and base treatment, chlorine salinized soil after employing is reinforced is as roadbase or processing layer, it is low to have eliminated the intensity that traditional basic unit or processing layer bring, the drawback of water stability difference, make highway, the urban roadbed road surface can be suitable for the influence of underground and the surface water, finally realized the change of road surface base layer material and roadbed processing material, reach and utilize the present situation material, avoid repetition and waste, improve the purpose of roadbed and foundation base intension and water stability.
The specific embodiment
The invention will be further described below in conjunction with the specific embodiment and embodiment.
Villaumite stain composite soil after a kind of punishment that the present invention relates to, it comprises the composite soil that chlorine salinized soil and auxiliary material are formed.When described chlorine salinized soil is the on-the-spot soil of 1.5%＜villaumite mass content≤3.2%, described auxiliary material is lime and cement, and the quality group of composite soil becomes the lime of 4-10%, the cement of 2-6% and the chlorine salinized soil of 84-94% by percentage to the quality.When described chlorine salinized soil is the on-the-spot soil of 1.1%≤villaumite mass content≤1.5%, described auxiliary material is lime and flyash, and the quality group of composite soil becomes the lime of 6-10%, the flyash of 6-10%, the chlorine salinized soil of 80-88% by percentage to the quality.The method for preparing this processing salinized soil gets final product for described component is mixed by described proportioning.
What the present invention relates to a kind ofly adopts villaumite stain composite soil after the punishment as the application process of road foundation and basic unit, and it may further comprise the steps: get the raw materials ready (1), comprises chlorine salinized soil, cement, flyash, lime; (2) the chlorine salinized soil that the scene is got carries out airing, pulverizing; (3) get chlorine salinized soil soil sample, determine the quality percentage composition of the villaumite in the chlorine salinized soil; (4) preparation composite soil, its compositions comprises by percentage to the quality: adopt the chlorine salinized soil of the cement of lime, 2-6% of 4-10% and 84-94% or the lime, the flyash of 6-10%, the chlorine salinized soil of 80-88% of employing 6-10% when 1.1%≤villaumite mass content≤1.5% when 1.5%＜villaumite mass content≤3.2%; (5) with each layer soil in above-mentioned definite ratio and component uniform mixing, determine the optimum moisture content and the maximum dry density of composite soil and measure its natural moisture content, by the difference of natural moisture content and optimum moisture content, determine water-spraying amount, make it reach optimum moisture content; (6) scene is paved and is rolled, and roadbed processing layer compaction Control is more than 95%, and subbase, compactness of subbase are controlled at more than 98%; (7) after each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.The optimum moisture content of described composite soil and maximum dry density are determined by indoor modified compaction test.
Embodiment 1
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 1.13%) comprise that by percentage to the quality 8% lime, 8% flyash, 84% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 11.2～14.1%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 39～81kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime fly ash is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.12～1.29Mpa; The unconfined compression strength in the 14 day length of time is 1.48～1.69Mpa, and the unconfined compression strength in the 28 day length of time is 1.98～2.06Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 2
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 1.23%) comprise that by percentage to the quality 10% lime, 6% flyash, 84% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 11.2～16.1%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 39～105kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime fly ash is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.18～1.35Mpa; The unconfined compression strength in the 14 day length of time is 1.34～1.89Mpa, and the unconfined compression strength in the 28 day length of time is 1.78～2.18Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 3
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 1.22%) comprise that by percentage to the quality 6% lime, 10% flyash, 84% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 11.2～15.2%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 37～102kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime fly ash is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 0.98～1.07Mpa; The unconfined compression strength in the 14 day length of time is 1.17～1.29Mpa, and the unconfined compression strength in the 28 day length of time is 1.5～1.86Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 4
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 1.48%) comprise that by percentage to the quality 10% lime, 10% flyash, 80% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 13.1～14.6%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 19～67kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime fly ash is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.32～1.78Mpa; The unconfined compression strength in the 14 day length of time is 1.68～2.26Mpa, and the unconfined compression strength in the 28 day length of time is 2.49～2.79Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 5
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 1.27%) comprise that by percentage to the quality 6% lime, 6% flyash, 88% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 17.6～18.2%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 12～48kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime fly ash is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 0.72～0.89Mpa; The unconfined compression strength in the 14 day length of time is 1.03～1.58Mpa, and the unconfined compression strength in the 28 day length of time is 1.68～1.82Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 6
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 1.55%) comprise that by percentage to the quality 6% lime, 4% cement, 90% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 12.8～15.3%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 18～43kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime cement is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.28～1.69Mpa; The unconfined compression strength in the 14 day length of time is 1.54～2.03Mpa, and the unconfined compression strength in the 28 day length of time is 2.02～2.28Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 7
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 3.2%) comprise that by percentage to the quality 10% lime, 6% cement, 84% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 12.1～14.8%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 30～84kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime cement is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.88～2.56Mpa; The unconfined compression strength in the 14 day length of time is 2.37～2.86Mpa, and the unconfined compression strength in the 28 day length of time is 2.65～3.14Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 8
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 2.25%) comprise that by percentage to the quality 6% lime, 6% cement, 88% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 11.3～12.5%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 27～91kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime cement is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.65～2.1Mpa; The unconfined compression strength in the 14 day length of time is 2.18～2.3Mpa, and the unconfined compression strength in the 28 day length of time is 2.45～2.89Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 9
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 2%) comprise that by percentage to the quality 8% lime, 5% cement, 87% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 13.5～15.7%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 21～66kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime cement is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.54～2.06Mpa; The unconfined compression strength in the 14 day length of time is 2.14～2.54Mpa, and the unconfined compression strength in the 28 day length of time is 2.7～2.88Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Embodiment 10
Get the raw materials ready, it forms the salinized soil (the villaumite mass content is 1.63%) comprise that by percentage to the quality 4% lime, 2% cement, 94% scene are got; The salinized soil that the scene is got carries out airing, pulverizing; To get the raw materials ready and described salinized soil mixes the preparation composite soil, the natural moisture content of measuring described composite soil is 11.6～12.8%, by the difference of optimum moisture content and natural moisture content, determines that water-spraying amount is 18～42kg/m
3, make it reach optimum moisture content; The scene is paved and is rolled, and the roadbed shallow-layer is handled compaction Control more than 95%, and subbase, compactness of subbase are controlled at more than 98%; After each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.Lime cement is handled salinized soil after measured, and the unconfined compression strength in the 7 day length of time is 1.12～1.34Mpa; The unconfined compression strength in the 14 day length of time is 1.43～1.58Mpa, and the unconfined compression strength in the 28 day length of time is 1.89～2.06Mpa.All satisfying 7 days unconfined compression strength of traditional shallow-layer processing layer health should be greater than 0.5MPa～0.7MPa, traditional basic unit, 7 days unconfined compression strength of subbase stabilized with inorganic binder soil health should be greater than the requirement of 1.0MPa～1.2MPa.
Claims (4)
1. the chlorine salinized soil after punishing is characterized in that: it comprises the composite soil that chlorine salinized soil and auxiliary material are formed.
2. the chlorine salinized soil after the punishment according to claim 1, it is characterized in that: described chlorine salinized soil is the on-the-spot soil of 1.5%＜villaumite mass content≤3.2%, described auxiliary material is lime and cement, and the quality group of composite soil becomes the lime of 4-10%, the cement of 2-6% and the chlorine salinized soil of 84-94% by percentage to the quality.
3. the chlorine salinized soil after the punishment according to claim 1, it is characterized in that: described chlorine salinized soil is the on-the-spot soil of 1.1%≤villaumite mass content≤1.5%, described auxiliary material is lime and flyash, and the quality group of composite soil becomes the lime of 6-10%, the flyash of 6-10%, the chlorine salinized soil of 80-88% by percentage to the quality.
4. one kind is adopted chlorine salinized soil after the punishment as the application process of road foundation and basic unit, it is characterized in that it may further comprise the steps:
(1) gets the raw materials ready, comprise chlorine salinized soil, cement, flyash, lime;
(2) the chlorine salinized soil that the scene is got carries out airing, pulverizing;
(3) get chlorine salinized soil soil sample, determine the quality percentage composition of the villaumite in the chlorine salinized soil;
(4) preparation composite soil, its compositions comprises by percentage to the quality: adopt the chlorine salinized soil of the cement of lime, 2-6% of 4-10% and 84-94% or the lime, the flyash of 6-10%, the chlorine salinized soil of 80-88% of employing 6-10% when 1.1%≤villaumite mass content≤1.5% when 1.5%＜villaumite mass content≤3.2%;
(5) with each layer soil in above-mentioned definite ratio and component uniform mixing, determine the optimum moisture content and the maximum dry density of composite soil and measure its natural moisture content, by the difference of natural moisture content and optimum moisture content, determine water-spraying amount, make it reach optimum moisture content;
(6) scene is paved and is rolled, and roadbed processing layer compaction Control is more than 95%, and subbase, compactness of subbase are controlled at more than 98%;
(7) after each layer rolled and finishes, the watering health reached the last layer compound that paves after design strength requires in 7 days.
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| CN102140771A (en) * | 2011-01-27 | 2011-08-03 | 河南省新开元路桥工程咨询有限公司 | Construction method for processing saline soil roadbed by separation layer |
| CN102405708A (en) * | 2010-09-21 | 2012-04-11 | 河北省农林科学院滨海农业研究所 | Method for quickly desalting viscous heavy salt soil by using fly ash |
| CN103290750A (en) * | 2013-06-04 | 2013-09-11 | 北京航空航天大学 | Road subgrade, base layer and subbase layer made of cementing ultra-strong chloride saline soil and construction method thereof |
| CN103306178A (en) * | 2013-06-04 | 2013-09-18 | 北京航空航天大学 | Over-sulphate salty soil cemented roadbed, basement layer and subbase layer as well as construction method thereof |
| CN110357568A (en) * | 2019-09-02 | 2019-10-22 | 中南大学 | A kind of alkali-activated carbonatite ground polymers bed course and preparation method thereof |
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| CN113277812A (en) * | 2021-05-06 | 2021-08-20 | 新疆维吾尔自治区交通规划勘察设计研究院 | Rock salt base layer mixture, preparation method and application |
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| CN102405708A (en) * | 2010-09-21 | 2012-04-11 | 河北省农林科学院滨海农业研究所 | Method for quickly desalting viscous heavy salt soil by using fly ash |
| CN102140771A (en) * | 2011-01-27 | 2011-08-03 | 河南省新开元路桥工程咨询有限公司 | Construction method for processing saline soil roadbed by separation layer |
| CN103290750A (en) * | 2013-06-04 | 2013-09-11 | 北京航空航天大学 | Road subgrade, base layer and subbase layer made of cementing ultra-strong chloride saline soil and construction method thereof |
| CN103306178A (en) * | 2013-06-04 | 2013-09-18 | 北京航空航天大学 | Over-sulphate salty soil cemented roadbed, basement layer and subbase layer as well as construction method thereof |
| CN103290750B (en) * | 2013-06-04 | 2015-10-07 | 北京航空航天大学 | A kind of road foundation of the cementing salinized soil containing villaumite, basic unit, subbase |
| CN103306178B (en) * | 2013-06-04 | 2015-11-18 | 北京航空航天大学 | A kind of road foundation of cementing ultra-sulphate stain soil, basic unit, subbase |
| CN110357568A (en) * | 2019-09-02 | 2019-10-22 | 中南大学 | A kind of alkali-activated carbonatite ground polymers bed course and preparation method thereof |
| CN111622041A (en) * | 2020-06-05 | 2020-09-04 | 交通运输部科学研究院 | Road base layer stabilizing material for strong-chlorine saline soil area and construction method |
| CN111622041B (en) * | 2020-06-05 | 2021-12-14 | 交通运输部科学研究院 | Road base layer stabilizing material for strong-chlorine saline soil area and construction method |
| CN111574162A (en) * | 2020-06-12 | 2020-08-25 | 北京土木禾天环保科技有限公司 | Road base layer mixture taking saline-alkali soil as raw material and preparation method of road base layer |
| CN113277812A (en) * | 2021-05-06 | 2021-08-20 | 新疆维吾尔自治区交通规划勘察设计研究院 | Rock salt base layer mixture, preparation method and application |
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