CN106835882B - A kind of Crack of Cement-Stabilized Macadam Base control method - Google Patents
A kind of Crack of Cement-Stabilized Macadam Base control method Download PDFInfo
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- CN106835882B CN106835882B CN201710152494.9A CN201710152494A CN106835882B CN 106835882 B CN106835882 B CN 106835882B CN 201710152494 A CN201710152494 A CN 201710152494A CN 106835882 B CN106835882 B CN 106835882B
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- butadiene
- cement
- styrene latex
- stabilized macadam
- base
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of Crack of Cement-Stabilized Macadam Base control methods, it include: Step 1: preparing butadiene-styrene latex ball using butadiene-styrene latex; butadiene-styrene latex ball is the sphere by several line style interconnecting pieces inner hollow interlaced with each other being formed by connecting; the diameter of line style interconnecting piece is 0.6-1mm, and the diameter of butadiene-styrene latex ball is 2-3cm；Step 2: being added butadiene-styrene latex ball into cement stabilized macadam, the mass ratio of butadiene-styrene latex ball and cement stabilized macadam is 0.004-0.006:1, adds water and gathers materials, uniform mixing, so that Cement Stable Macadam Mixture be prepared；Step 3: Cement Stable Macadam Mixture is paved and rolled again, base is formed；Step 4: being conserved to the base that step 3 obtains.The present invention in cement stabilized macadam by adding butadiene-styrene latex ball, and the base being finally made can show good compactness, cohesive force and integral strength, to reduce the generation in crack.
Description
Technical field
The present invention relates to a kind of Crack of Cement-Stabilized Macadam Base control methods.
Background technique
Cement stabilized macadam base is high with early strength, globality is strong, anti-ice freezing stability is good, scour resistance is good,
The advantages that fatigue-resistance characteristics are good, construction quality is easily controllable can bear bigger Vehicle Load, be adapted to heavy traffic
Demand, therefore be widely applied in China Higher grade road base layer.
However most outstanding problem existing for cement stabilized macadam base is that crack resistance is poor, material has centainly crisp
Property, it is stronger to temperature, moisture sensitivity, in actual application, it is easy to shrink generation under the alternating variation of temperature and humidity
Crack.Under the such environmental effects of vehicular load and mechanical periodicity repeatedly, the crack tip meeting of cement stabilized macadam base
It generates biggish stress to concentrate, in turn results in basic crack and reflected upwards along surface layer bottom, form reflection crack.Reflection crack
Appearance enters road surface structare layer for surface water and provides channel, since the surface water of entrance cannot be discharged in time and is trapped in face
Between layer and base, the flowing pressure generated under the repeated action of vehicular load washes away base, and base material is caused to fall off pine
It dissipates；The cohesive force of base and surface layer declines simultaneously, and road surface structare layer bearing capacity reduces, and eventually leads to road surface structare layer globality
Damage.
Summary of the invention
In view of the above technical problems, the present invention, which has designed and developed one kind, can be effectively reduced Crack of Cement-Stabilized Macadam Base
The Crack of Cement-Stabilized Macadam Base control method of generation.
Technical solution provided by the invention are as follows:
A kind of Crack of Cement-Stabilized Macadam Base control method, comprising:
Step 1: prepare butadiene-styrene latex ball using butadiene-styrene latex, the butadiene-styrene latex ball be by several line style interconnecting pieces that
The sphere of inner hollow made of this is cross-linked, the diameter of the line style interconnecting piece are 0.6-1mm, the butadiene-styrene latex ball
Diameter is 2-3cm；
Step 2: butadiene-styrene latex ball is added into cement stabilized macadam, the matter of butadiene-styrene latex ball and cement stabilized macadam
Amount ratio is 0.004-0.006:1, adds water and gathers materials, uniform mixing, so that Cement Stable Macadam Mixture be prepared；
Step 3: Cement Stable Macadam Mixture is paved and rolled again, base is formed；
Step 4: being conserved to the base that step 3 obtains.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, in the step 2, butadiene-styrene latex ball
Mass ratio with cement stabilized macadam is 0.004:1.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, in the step 3, in paving process
In, paved using paver, rolled using substrate portion of the roller to the completion that paves, spreading speed be at the uniform velocity,
And spreading speed is 0.5-0.8m/min, the distance between roller to paver is 0.8-1m, rolling speed and spreading speed
Unanimously.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, in the step 3, spreading speed is
0.8m/min, the distance between roller to paver are 1m.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, in the step 4, to step 3
When obtained base is conserved, first geotextiles are covered in base, 30min is covered, sprinkles water later, every 1h watering one
It is secondary, continue 10 days.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, the diameter of the butadiene-styrene latex ball is
2-2.5cm。
Crack of Cement-Stabilized Macadam Base control method of the present invention in cement stabilized macadam by adding butylbenzene
Latex balloon, the base being finally made can show good compactness, cohesive force and integral strength, to reduce crack
It generates.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of butadiene-styrene latex ball of the present invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
As shown in Figure 1, the present invention provides a kind of Crack of Cement-Stabilized Macadam Base control method, comprising:
Step 1: prepare butadiene-styrene latex ball using butadiene-styrene latex, the butadiene-styrene latex ball be by several line style interconnecting pieces 2 that
The sphere 1 of inner hollow made of this is cross-linked, the diameter of the line style interconnecting piece are 0.6-1mm, the butadiene-styrene latex ball
Diameter be 2-3cm；
Step 2: butadiene-styrene latex ball is added into cement stabilized macadam, the matter of butadiene-styrene latex ball and cement stabilized macadam
Amount ratio is 0.004-0.006:1, adds water and gathers materials, uniform mixing, so that Cement Stable Macadam Mixture be prepared；
Step 3: Cement Stable Macadam Mixture is paved and rolled again, base is formed；
Step 4: being conserved to the base that step 3 obtains.
The present invention is prepared for butadiene-styrene latex ball using butadiene-styrene latex, and butadiene-styrene latex ball is really by many line style interconnecting pieces
The hollow sphere being cross-linked is added in cement stabilized macadam when by butadiene-styrene latex ball, and cement stabilized macadam can be full of fourth
The inner space of Atrolactamide ball, and it is wrapped in the outside of butadiene-styrene latex ball.Butadiene-styrene latex ball can be improved cement stabilized macadam base
The cohesive force of layer, inhibits the generation in crack.
Butadiene-styrene latex ball can by by a spherical die formed one with complete surface hollow sphere ball, so
Cutting surfaces again afterwards, form it into the hollow sphere of a hollow out.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, in the step 2, butadiene-styrene latex ball
Mass ratio with cement stabilized macadam is 0.004:1.
In order to improve the conjugation of butadiene-styrene latex ball and cement stabilized macadam, the present invention is also to the technique for paving and rolling
It is improved.Preferably, it in the Crack of Cement-Stabilized Macadam Base control method, in the step 3, is paving
In the process, it is paved using paver, is rolled using substrate portion of the roller to the completion that paves, spreading speed is even
Speed, and spreading speed is 0.5-0.8m/min, the distance between roller to paver is 0.8-1m, rolling speed and the speed that paves
Degree is consistent.
Gap between roller and paver, when just determining exposure of the same region between paving and rolling
Between, the length of the exposure duration ensure that butadiene-styrene latex ball can be adequately bonded with cement stabilized macadam.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, in the step 3, spreading speed is
0.8m/min, the distance between roller to paver are 1m.
In order to improve the conjugation of butadiene-styrene latex ball and cement stabilized macadam, the present invention also changes the technique of maintenance
Into.Preferably, it in the Crack of Cement-Stabilized Macadam Base control method, in the step 4, is obtained to step 3
Base when being conserved, first geotextiles are covered in base, 30min is covered, sprinkles water later, it is primary every 1h watering, hold
It is 10 days continuous.
Preferably, in the Crack of Cement-Stabilized Macadam Base control method, the diameter of the butadiene-styrene latex ball is
2-2.5cm。
Embodiment one
A kind of Crack of Cement-Stabilized Macadam Base control method, comprising:
Step 1: prepare butadiene-styrene latex ball using butadiene-styrene latex, the butadiene-styrene latex ball be by several line style interconnecting pieces that
The sphere of inner hollow made of this is cross-linked, the diameter of the line style interconnecting piece are 0.6-1mm, the butadiene-styrene latex ball
Diameter is 2-2.5cm；
Step 2: butadiene-styrene latex ball is added into cement stabilized macadam, the matter of butadiene-styrene latex ball and cement stabilized macadam
Amount ratio is 0.004-:1, adds water and gathers materials, uniform mixing, so that Cement Stable Macadam Mixture be prepared；
Step 3: Cement Stable Macadam Mixture is paved and rolled again, base is formed；In paving process, adopt
It is paved with paver, is rolled using substrate portion of the roller to the completion that paves, spreading speed is at the uniform velocity, and to pave
Speed is 0.8m/min, and the distance between roller to paver is 1m, and rolling speed is consistent with spreading speed；
Step 4: being conserved to the base that step 3 obtains；When being conserved to the base that step 3 obtains, first will
Geotextiles are covered in base, are covered 30min, are sprinkled water later, primary every 1h watering, continue 10 days.
Embodiment two
A kind of Crack of Cement-Stabilized Macadam Base control method, comprising:
Step 1: prepare butadiene-styrene latex ball using butadiene-styrene latex, the butadiene-styrene latex ball be by several line style interconnecting pieces that
The sphere of inner hollow made of this is cross-linked, the diameter of the line style interconnecting piece are 0.6-1mm, the butadiene-styrene latex ball
Diameter is 2.5-3cm；
Step 2: butadiene-styrene latex ball is added into cement stabilized macadam, the matter of butadiene-styrene latex ball and cement stabilized macadam
Amount ratio is 0.006:1, adds water and gathers materials, uniform mixing, so that Cement Stable Macadam Mixture be prepared；
Step 3: Cement Stable Macadam Mixture is paved and rolled again, base is formed；In paving process, adopt
It is paved with paver, is rolled using substrate portion of the roller to the completion that paves, spreading speed is at the uniform velocity, and to pave
Speed is 0.5m/min, and the distance between roller to paver is 0.8m, and rolling speed is consistent with spreading speed；
Step 4: being conserved to the base that step 3 obtains；When being conserved to the base that step 3 obtains, first will
Geotextiles are covered in base, are covered 30min, are sprinkled water later, primary every 1h watering, continue 10 days.
Embodiment three
A kind of Crack of Cement-Stabilized Macadam Base control method, comprising:
Step 1: prepare butadiene-styrene latex ball using butadiene-styrene latex, the butadiene-styrene latex ball be by several line style interconnecting pieces that
The sphere of inner hollow made of this is cross-linked, the diameter of the line style interconnecting piece are 0.6-1mm, the butadiene-styrene latex ball
Diameter is 2-3cm；
Step 2: butadiene-styrene latex ball is added into cement stabilized macadam, the matter of butadiene-styrene latex ball and cement stabilized macadam
Amount ratio is 0.006:1, adds water and gathers materials, uniform mixing, so that Cement Stable Macadam Mixture be prepared；
Step 3: Cement Stable Macadam Mixture is paved and rolled again, base is formed；In paving process, adopt
It is paved with paver, is rolled using substrate portion of the roller to the completion that paves, spreading speed is at the uniform velocity, and to pave
Speed is 0.8m/min, and the distance between roller to paver is 1m, and rolling speed is consistent with spreading speed；
Step 4: being conserved to the base that step 3 obtains；When being conserved to the base that step 3 obtains, first will
Geotextiles are covered in base, are covered 30min, are sprinkled water later, primary every 1h watering, continue 10 days.
The cement stabilized macadam test specimen that embodiment one to embodiment three is prepared is respectively adopted and uses 150mm × 150mm
Hydrostatic profile cylinder specimen, test specimen compaction Control are 98%.Test specimen is through 7d, 14d, 28d Standard Curing, last day leaching
Water.Successively measure the unconfined compressive strength of test specimen.
Unconfined compressive strength of the embodiment one to embodiment three relative to the test specimen for not adding butadiene-styrene latex ball mentions respectively
It is high by 15.2%, 16.0% and 16.2%.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (4)
1. a kind of Crack of Cement-Stabilized Macadam Base control method characterized by comprising
Step 1: preparing butadiene-styrene latex ball using butadiene-styrene latex, the butadiene-styrene latex ball is to be handed over each other by several line style interconnecting pieces
The sphere for the inner hollow that mistake is formed by connecting, the diameter of the line style interconnecting piece are 0.6-1mm, the diameter of the butadiene-styrene latex ball
For 2-3cm；
Step 2: butadiene-styrene latex ball is added into cement stabilized macadam, the mass ratio of butadiene-styrene latex ball and cement stabilized macadam
For 0.004-0.006:1, adds water and gather materials, uniform mixing, so that Cement Stable Macadam Mixture be prepared；
Step 3: Cement Stable Macadam Mixture is paved and rolled again, base is formed；In the step 3, paving
In the process, it is paved using paver, is rolled using substrate portion of the roller to the completion that paves, spreading speed is even
Speed, and spreading speed is 0.5-0.8m/min, the distance between roller to paver is 0.8-1m, rolling speed and the speed that paves
Degree is consistent；In the step 3, spreading speed 0.8m/min, the distance between roller to paver is 1m；
Step 4: being conserved to the base that step 3 obtains.
2. Crack of Cement-Stabilized Macadam Base control method as described in claim 1, which is characterized in that in the step 2,
The mass ratio of butadiene-styrene latex ball and cement stabilized macadam is 0.004:1.
3. Crack of Cement-Stabilized Macadam Base control method as described in claim 1, which is characterized in that in the step 4,
When being conserved to the base that step 3 obtains, first geotextiles are covered in base, 30min is covered, sprinkles water later, every
1h watering is primary, continues 10 days.
4. Crack of Cement-Stabilized Macadam Base control method as described in claim 1, which is characterized in that the butadiene-styrene latex ball
Diameter be 2-2.5cm.
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| CN106835882B true CN106835882B (en) | 2019-07-23 |
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| DE2610950A1 (en) * | 1976-03-16 | 1977-10-06 | Goldschmidt Ag Th | Plastic road surface coating - consists of brittle hollow mouldings set on reaction plastics base |
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| CA2385819A1 (en) * | 2001-11-16 | 2003-05-16 | Deltalok Inc. | Sub-base drainage device |
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Effective date of registration: 20201204 Address after: 100011, Beijing, Dongcheng District anding street, No. 88, No. 801 Patentee after: CCCC THIRD HIGHWAY ENGINEERING Co.,Ltd. Patentee after: THE THIRD ENGINEERING CO., LTD. OF THE CCCC THIRD HIGHWAY ENGINEERING Co.,Ltd. Address before: 100011, Beijing, Dongcheng District anding street, No. 88, No. 801 Patentee before: CCCC THIRD HIGHWAY ENGINEERING Co.,Ltd. |