CN105155378A - Limestone soil road bed construction process - Google Patents

Limestone soil road bed construction process Download PDF

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Publication number
CN105155378A
CN105155378A CN201510554119.8A CN201510554119A CN105155378A CN 105155378 A CN105155378 A CN 105155378A CN 201510554119 A CN201510554119 A CN 201510554119A CN 105155378 A CN105155378 A CN 105155378A
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road
soil
rendzinas
mix
time
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CN201510554119.8A
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CN105155378B (en
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谢作成
陈志诚
钱国华
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Zhejiang Haocheng Construction Co.,Ltd.
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Huzhou Haocheng Environmental Engineering Co Ltd
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Abstract

The invention relates to a limestone soil road bed construction process, and belongs to the technical field of road construction. The limestone soil road bed construction process comprises the following steps of fiber mixing, wherein limestone soil and water-tolerant fibers are mixed and stirred; soil smashing, wherein a tractor is utilized for dragging a gangplow to plough the soil by designed depth; dry mixing, wherein the limestone soil is mixed through a heavy harrow; wet mixing, wherein water is sprayed to the surface of the limestone soil, and then the soil is mixed evenly; stable rolling, wherein constant-speed rolling is carried out through heavy wheels of an weight-tonnage road roller; and rolling, wherein a road roller above 12 tonnages is used for rolling 4-6 times towards the center of the road from the roadside. According to the limestone soil road bed construction process, the structural performance of the surface of the road is improved, the water stability of a road bed is improved, and the service life of the road is longer.

Description

A kind of rendzinas subgrade construction technique
Technical field
The present invention relates to technical field of road construction, be specifically related to a kind of rendzinas subgrade construction technique.
Background technology
Rendzinas is also known as lime stabilized soil, by mixing a certain amount of lime and water uniform stirring is made in soil, this Stabilized Soil has good plate body, the good raw material for making road foundation, but the water stability of rendzinas is not good, easily cause roadbase to ftracture more when rainwater falls, therefore need a kind of water stability that can improve rendzinas roadbed to prevent the construction technology of crevice of roadbed.
Summary of the invention
Object of the present invention is to solve the problem, and provides a kind of structural performance improving road surface, improves the water stability of roadbed, make the construction technology that Road Service Life is longer.
The technical scheme that the present invention solves the problem is as follows:
A kind of rendzinas subgrade construction technique, comprises the steps:
1. fiber is mixed: dirt and the resistance to water cellulose being equivalent to dirt weight 0.10-0.25% are admixed and stirred, and described fibre length is not more than 12mm;
2. hack: utilize tractor-drawn multishare plough, first plugs in plough from mix section starting point sideline varus, inside Geng Dao center, and Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, and so repeatedly at least twice; Then heavy duty harrow, light rake Shi Tufanxiang center is coordinated; Cooperation is turned up, is gently harrowed and soil is ploughed projected depth again, does not blank;
3. dry mixing: with heavy duty harrow to step 1. in dirt carry out mix at least four times;
4. wet-mixing: step 2. in the watering of dirt surface, turn up one time, soil layer moisture for top layer turned over to lower floor, the soil layer of bottom is turned over to surface, then coordinate heavy duty harrow and light rake to make native mix even, and whole go out road camber;
5. voltage stabilizing: at the uniform velocity roll to road central authorities from roadside front by eight tons of road roller rollers, finds in voltage stabilizing process that planeness differs greatly levelling in time, finds that watering flower is mended in crack, finds that soft bullet phenomenon opens soft bullet place, mix dry ash leveling;
6. roll: with more than 12 tons road rollers, start from roadside to roll 4-6 time to Lu Zhizheng.
This construction technology is added resistance to water cellulose and can be increased resistance that moisture permeates in roadbed and reduce the time of staying of moisture at road bed, moisture is made not easily to immerse in the middle of roadbed body, and due to the existence of corpus fibrosum, increase the stress repellence in roadbed body all directions, such that roadbed is not easy to crack to subside.
Hack, dry mixing, wet-mixing, voltage stabilizing and compaction technology make roadbed body material homogeneous closely knit, and have more globality, intensity is higher.
Coordinate the hack of dirt, dry mixing, wet-mixing, voltage stabilizing and compaction technology, make fiber itself evenly be distributed in roadbed, and being combined with roadbed body more closely, maximizedly having played the water-fast effect with gaining in strength of fiber self.
Preferred as technique scheme, step 1. in the fiber selected be polypropylene fibre or polyethylene fibre, account for 0.2% of dirt weight.
Polypropylene and polyethylene fibre are as conventional plastics material fibres, and its wilfulness, heat resistance, chemical stability are all better, and water imbibition is poor, are suitable for use as water-fast fibrous material.
Preferred as technique scheme, 2. step is: utilize tractor-drawn multishare plough, first plugs in plough from mix section starting point sideline varus, inside Geng Dao center, and Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, twice so repeatedly; Then heavy duty harrow four times, light rake twice Shi Tufanxiang center is coordinated; Coordinate again turn up four times, soil ploughed projected depth one time by light rake, do not blank.
Preferred as technique scheme, 3. step is: trail turnplow with heavy duty harrow and carry out mix, then gently harrow twice, Shi Tufanxiang center, then ploughing one time, heavy duty harrow four times gently rake twice, make native surface comparatively smooth.
Preferred as technique scheme, 4. step is: step 2. in the watering of dirt surface, turn up one time, soil layer moisture for top layer is turned over to lower floor, turn over to surface by the soil layer of bottom, then heavy duty harrow four times, light rake make for twice native mix even, and whole go out road camber.
Preferred as technique scheme, 4. step also comprises inspection step afterwards: check soil thickness, highly, whether width meet designing requirement, whether suitablely detect water content, soil layer injustice place adopts levelling and levelling machine is levelling.
Preferred as technique scheme, step 6. should with step 5. with step 4. in completing on the same day.
Preferred as technique scheme, 6. step is: with more than 12 tons road rollers, the edge of side, Xian Cong road starts to roll, and outside 1/2 is pressed on curb, with the speed of 60-70m/min, the overlapping 1/3-1/2 of each roller, be depressed into Lu Zhizheng gradually, opposite side edge, Zai Cong road is depressed into Lu Zhizheng equally, and this is one time, repetition 4-6 time like this, often repairs in time all over rolling rear inspection planeness.
Preferred as technique scheme, step 2. before, first sub-layer is cleaned, and watering is wetting.
Preferred as technique scheme, described construction technology selects index of plasticity to be the cohesive soil of 10-15, and soil block maximum size is not more than 15mm, and in soil, sulphate content is not more than 0.8%, humus content is not more than 10%, and not containing weeds, tree root; The lime of more than III grade specified during described construction technology is selected " town road engineering construction and inspection of quality specification " is raw material.
In sum, the present invention has following beneficial effect:
1. a kind of rendzinas subgrade construction technique of the present invention adds resistance to water cellulose, except gaining in strength, more improves the shortcoming of rendzinas poor water resistance;
2. the road structure of a kind of rendzinas subgrade construction manufacture technics of the present invention is evenly firm, has given full play to resistance to water cellulose role in roadbed, and has improve the application life of roadbed.
Accompanying drawing explanation
Fig. 1 is rendzinas subgrade construction process chart described in embodiment 1 and embodiment 2;
Fig. 2 is rendzinas subgrade construction process chart described in embodiment 3 and embodiment 4.
Detailed description of the invention
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Embodiment in the present invention, those of ordinary skill in the art, not doing other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, with embodiment, the present invention is described in detail.
Embodiment 1: a kind of rendzinas subgrade construction technique, index of plasticity is selected to be the cohesive soil of 10-15, soil block maximum size is not more than 15mm, in soil, sulphate content is not more than 0.8%, humus content is not more than 10%, and not containing weeds, tree root, and the lime of more than III grade specified in selecting " town road engineering construction and inspection of quality specification " is raw material.Comprise the steps:
1. fiber is mixed: dirt and the resistance to water cellulose of polypropylene being equivalent to dirt weight 0.2% are admixed and stirred, and described fibre length is not more than 12mm;
2. hack: utilize tractor-drawn multishare plough, first plugs in plough from mix section starting point sideline varus, inside Geng Dao center, and Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, twice so repeatedly; Then heavy duty harrow four times, light rake twice Shi Tufanxiang center is coordinated; Coordinate again turn up four times, soil ploughed projected depth one time by light rake, do not blank;
3. dry mixing: with heavy duty harrow to step 1. in dirt carry out mix at least four times;
4. wet-mixing: step 3. in the watering of dirt surface, turn up one time, turn over to lower floor by soil layer moisture for top layer, turn over to surface by the soil layer of bottom, then heavy duty harrow four times, light rake make for twice native mix even, and whole go out road camber;
5. voltage stabilizing: at the uniform velocity roll to road central authorities from roadside front by eight tons of road roller rollers, finds in voltage stabilizing process that planeness differs greatly levelling in time, finds that watering flower is mended in crack, finds that soft bullet phenomenon opens soft bullet place, mix dry ash leveling;
6. roll: with more than 12 tons road rollers, the edge of side, Xian Cong road starts to roll, outside 1/2 is pressed on curb, with the speed of 60-70m/min, the overlapping 1/3-1/2 of each roller, is depressed into Lu Zhizheng gradually, opposite side edge, Zai Cong road is depressed into Lu Zhizheng equally, this is one time, so repeats 4-6 time, often repairs in time all over rolling rear inspection planeness.
Embodiment 2: a kind of rendzinas subgrade construction technique, index of plasticity is selected to be the cohesive soil of 10-15, soil block maximum size is not more than 15mm, in soil, sulphate content is not more than 0.8%, humus content is not more than 10%, and not containing weeds, tree root, and the lime of more than III grade specified in selecting " town road engineering construction and inspection of quality specification " is raw material.Comprise the steps:
1. fiber is mixed: dirt and the resistance to water cellulose of polypropylene being equivalent to dirt weight 0.10% are admixed and stirred, and described fibre length is not more than 12mm;
2. hack: utilize tractor-drawn multishare plough, first plugs in plough from mix section starting point sideline varus, inside Geng Dao center, and Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, and so repeatedly at least twice; Then heavy duty harrow, light rake Shi Tufanxiang center is coordinated; Cooperation is turned up, is gently harrowed and soil is ploughed projected depth again, does not blank;
3. dry mixing: trail turnplow with heavy duty harrow and carry out mix, then gently harrow twice, Shi Tufanxiang center, then ploughing one time, heavy duty harrow four times gently rake twice, make native surface comparatively smooth;
4. wet-mixing: step 3. in the watering of dirt surface, turn up one time, soil layer moisture for top layer turned over to lower floor, the soil layer of bottom is turned over to surface, then coordinate heavy duty harrow and light rake to make native mix even, and whole go out road camber;
5. voltage stabilizing: at the uniform velocity roll to road central authorities from roadside front by eight tons of road roller rollers, finds in voltage stabilizing process that planeness differs greatly levelling in time, finds that watering flower is mended in crack, finds that soft bullet phenomenon opens soft bullet place, mix dry ash leveling;
6. roll: with more than 12 tons road rollers, the edge of side, Xian Cong road starts to roll, outside 1/2 is pressed on curb, with the speed of 60-70m/min, the overlapping 1/3-1/2 of each roller, is depressed into Lu Zhizheng gradually, opposite side edge, Zai Cong road is depressed into Lu Zhizheng equally, this is one time, so repeats 4-6 time, often repairs in time all over rolling rear inspection planeness.
Embodiment 3: a kind of rendzinas subgrade construction technique, index of plasticity is selected to be the cohesive soil of 10-15, soil block maximum size is not more than 15mm, in soil, sulphate content is not more than 0.8%, humus content is not more than 10%, and not containing weeds, tree root, and the lime of more than III grade specified in selecting " town road engineering construction and inspection of quality specification " is raw material.Comprise the steps:
1. fiber is mixed: dirt and the resistance to water cellulose of polyethylene being equivalent to dirt weight 0.25% are admixed and stirred, and described fibre length is not more than 12mm;
2. hack: first sub-layer is cleaned, and watering is wetting; Utilize tractor-drawn multishare plough, first plug in plough from mix section starting point sideline varus, inside Geng Dao center, Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, twice so repeatedly; Then heavy duty harrow four times, light rake twice Shi Tufanxiang center is coordinated; Coordinate again turn up four times, soil ploughed projected depth one time by light rake, do not blank;
3. dry mixing: trail turnplow with heavy duty harrow and carry out mix, then gently harrow twice, Shi Tufanxiang center, then ploughing one time, heavy duty harrow four times gently rake twice, make native surface comparatively smooth;
4. wet-mixing: step 3. in the watering of dirt surface, turn up one time, soil layer moisture for top layer turned over to lower floor, the soil layer of bottom is turned over to surface, then coordinate heavy duty harrow and light rake to make native mix even, and whole go out road camber; Check soil thickness, highly, whether width meet designing requirement, whether suitablely detect water content, soil layer injustice place adopts levelling and levelling machine is levelling;
5. voltage stabilizing: at the uniform velocity roll to road central authorities from roadside front by eight tons of road roller rollers, finds in voltage stabilizing process that planeness differs greatly levelling in time, finds that watering flower is mended in crack, finds that soft bullet phenomenon opens soft bullet place, mix dry ash leveling;
6. roll: with more than 12 tons road rollers, start from roadside to roll 4-6 time to Lu Zhizheng.
Embodiment 4: a kind of rendzinas subgrade construction technique, index of plasticity is selected to be the cohesive soil of 10-15, soil block maximum size is not more than 15mm, in soil, sulphate content is not more than 0.8%, humus content is not more than 10%, and not containing weeds, tree root, and the lime of more than III grade specified in selecting " town road engineering construction and inspection of quality specification " is raw material.Comprise the steps:
1. fiber is mixed: dirt and the resistance to water cellulose of polyethylene being equivalent to dirt weight 0.20% are admixed and stirred, and described fibre length is not more than 12mm;
2. hack: first sub-layer is cleaned, and watering is wetting; Utilize tractor-drawn multishare plough, utilize tractor-drawn multishare plough, plug in plough, inside Geng Dao center from mix section starting point sideline varus, Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, and so repeatedly at least twice; Then heavy duty harrow, light rake Shi Tufanxiang center is coordinated; Cooperation is turned up, is gently harrowed and soil is ploughed projected depth again, does not blank;
3. dry mixing: with heavy duty harrow to step 1. in dirt carry out mix at least four times;
4. wet-mixing: step 3. in the watering of dirt surface, turn up one time, turn over to lower floor by soil layer moisture for top layer, turn over to surface by the soil layer of bottom, then heavy duty harrow four times, light rake make for twice native mix even, and whole go out road camber; Check soil thickness, highly, whether width meet designing requirement, whether suitablely detect water content, soil layer injustice place adopts levelling and levelling machine is levelling;
5. voltage stabilizing: at the uniform velocity roll to road central authorities from roadside front by eight tons of road roller rollers, finds in voltage stabilizing process that planeness differs greatly levelling in time, finds that watering flower is mended in crack, finds that soft bullet phenomenon opens soft bullet place, mix dry ash leveling;
6. roll: with more than 12 tons road rollers, start from roadside to roll 4-6 time to Lu Zhizheng.

Claims (10)

1. a rendzinas subgrade construction technique, is characterized in that: comprise the steps:
Mix fiber: dirt and the resistance to water cellulose being equivalent to dirt weight 0.10-0.25% are admixed and stirred, and described fibre length is not more than 12mm;
Hack: utilize tractor-drawn multishare plough, first plugs in plough from mix section starting point sideline varus, inside Geng Dao center, and Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, and so repeatedly at least twice; Then heavy duty harrow, light rake Shi Tufanxiang center is coordinated; Cooperation is turned up, is gently harrowed and soil is ploughed projected depth again, does not blank;
Dry mixing: with heavy duty harrow to step 1. in dirt carry out mix at least four times;
Wet-mixing: step 3. in the watering of dirt surface, turn up one time, soil layer moisture for top layer turned over to lower floor, the soil layer of bottom is turned over to surface, then coordinate heavy duty harrow and light rake to make native mix even, and whole go out road camber;
Voltage stabilizing: at the uniform velocity roll to road central authorities from roadside front by eight tons of road roller rollers, finds in voltage stabilizing process that planeness differs greatly levelling in time, finds that watering flower is mended in crack, finds that soft bullet phenomenon opens soft bullet place, mix dry ash leveling;
Roll: with more than 12 tons road rollers, start from roadside to roll 4-6 time to Lu Zhizheng.
2. a kind of rendzinas subgrade construction technique according to claim 1, is characterized in that: step 1. in the fiber selected be polypropylene fibre or polyethylene fibre, account for 0.2% of dirt weight.
3. a kind of rendzinas subgrade construction technique according to claim 1, it is characterized in that: 2. step is: utilize tractor-drawn multishare plough, first plough is inserted from mix section starting point sideline varus, inside Geng Dao center, Zai Cong center strand of outwards turning up ploughs sideline, mix section both sides, twice so repeatedly; Then heavy duty harrow four times, light rake twice Shi Tufanxiang center is coordinated; Coordinate again turn up four times, soil ploughed projected depth one time by light rake, do not blank.
4. a kind of rendzinas subgrade construction technique according to claim 1, it is characterized in that: 3. step is: trail turnplow with heavy duty harrow and carry out mix, then gently harrow twice, Shi Tufanxiang center, ploughing one time again, heavy duty harrow gently harrow twice four times, make native surface comparatively smooth.
5. a kind of rendzinas subgrade construction technique according to claim 1, it is characterized in that: 4. step is: step 3. in dirt surface watering, turn up one time, soil layer moisture for top layer is turned over to lower floor, the soil layer of bottom is turned over to surface, then heavy duty harrow four times, light rake make for twice native mix even, and whole go out road camber.
6. a kind of rendzinas subgrade construction technique according to claim 1, it is characterized in that: 4. step also comprises inspection step afterwards: check soil thickness, highly, whether width meet designing requirement, whether suitablely detect water content, soil layer injustice place adopts levelling and levelling machine is levelling.
7. a kind of rendzinas subgrade construction technique according to claim 1, is characterized in that: step 6. should with step 5. with step 4. in completing on the same day.
8. a kind of rendzinas subgrade construction technique according to claim 1, it is characterized in that: 6. step is: with more than 12 tons road rollers, the edge of side, Xian Cong road starts to roll, and outside 1/2 is pressed on curb, with the speed of 60-70m/min, the overlapping 1/3-1/2 of each roller, be depressed into Lu Zhizheng gradually, opposite side edge, Zai Cong road is depressed into Lu Zhizheng equally, and this is one time, repetition 4-6 time like this, often repairs in time all over rolling rear inspection planeness.
9. a kind of rendzinas subgrade construction technique according to claim 1, is characterized in that: step 2. before, first sub-layer is cleaned, and watering is wetting.
10. a kind of rendzinas subgrade construction technique according to claim 1, it is characterized in that: described construction technology selects index of plasticity to be the cohesive soil of 10-15, soil block maximum size is not more than 15mm, in soil, sulphate content is not more than 0.8%, humus content is not more than 10%, and not containing weeds, tree root; The lime of more than III grade specified during described construction technology is selected " town road engineering construction and inspection of quality specification " is raw material.
CN201510554119.8A 2015-09-02 2015-09-02 A kind of rendzinas subgrade construction technique Active CN105155378B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106116394A (en) * 2016-07-06 2016-11-16 浙江新业管桩有限公司 A kind of modified quicklime
CN107558339A (en) * 2017-09-21 2018-01-09 南昌工程学院 A kind of high road pavement construction method
CN109437791A (en) * 2018-12-30 2019-03-08 中铁隧道局集团有限公司 A kind of modified lime soil and preparation method thereof suitable for Han Qu

Citations (4)

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Publication number Priority date Publication date Assignee Title
RU2117090C1 (en) * 1997-02-10 1998-08-10 Томская государственная архитектурно-строительная академия Method for construction of road base
CN1932167A (en) * 2006-07-25 2007-03-21 南京大学 Chopped fiber reinforced rendzinas ground treatment method
CN101544489A (en) * 2009-04-30 2009-09-30 上海大学 Reinforcement two-ash soil and engineering construction method
CN104631255A (en) * 2015-01-16 2015-05-20 湖南科技大学 Construction method for inhibiting disintegration of granite residual soil subgrade by cement and fiber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2117090C1 (en) * 1997-02-10 1998-08-10 Томская государственная архитектурно-строительная академия Method for construction of road base
CN1932167A (en) * 2006-07-25 2007-03-21 南京大学 Chopped fiber reinforced rendzinas ground treatment method
CN101544489A (en) * 2009-04-30 2009-09-30 上海大学 Reinforcement two-ash soil and engineering construction method
CN104631255A (en) * 2015-01-16 2015-05-20 湖南科技大学 Construction method for inhibiting disintegration of granite residual soil subgrade by cement and fiber

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106116394A (en) * 2016-07-06 2016-11-16 浙江新业管桩有限公司 A kind of modified quicklime
CN106116394B (en) * 2016-07-06 2018-08-03 浙江新业管桩有限公司 A kind of modified quicklime
CN107558339A (en) * 2017-09-21 2018-01-09 南昌工程学院 A kind of high road pavement construction method
CN109437791A (en) * 2018-12-30 2019-03-08 中铁隧道局集团有限公司 A kind of modified lime soil and preparation method thereof suitable for Han Qu

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Pledgee: Miaoxi sub branch of Huzhou Wuxing Rural Commercial Bank Co.,Ltd.

Pledgor: Zhejiang Haocheng Construction Co.,Ltd.

Registration number: Y2023980030370

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A construction technology for lime soil subgrade

Effective date of registration: 20231222

Granted publication date: 20170818

Pledgee: Miaoxi sub branch of Huzhou Wuxing Rural Commercial Bank Co.,Ltd.

Pledgor: Zhejiang Haocheng Construction Co.,Ltd.

Registration number: Y2023110000541