CN102515642B - A kind of mud prescription with stronger viscosity - Google Patents
A kind of mud prescription with stronger viscosity Download PDFInfo
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- CN102515642B CN102515642B CN201110407711.7A CN201110407711A CN102515642B CN 102515642 B CN102515642 B CN 102515642B CN 201110407711 A CN201110407711 A CN 201110407711A CN 102515642 B CN102515642 B CN 102515642B
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Abstract
A kind of mud prescription with stronger viscosity, this mud is mainly made up of cement and bentonite, and the most bentonitic content is 7%, soda incorporation is 0.35%, and the ratio of mud is 2 ~ 4, and the additive ratio of mud is 40% ~ 45%, and mud severe reaches 13KN/m3Above, clay content is more than 50%, and infiltration coefficient is less than 1 × 10cm/s, and the viscosity of its serosity controlled between 20～30 seconds.The mud using inventive formulation to configure out has stronger mobility and viscosity, can carry out Tong Bu deformation after mud enclosing wall with the soil of construction area, effectively prevents from producing top building because of differential settlement destroying.
Description
Technical field
The present invention relates to a kind of construction material, a kind of mud prescription with stronger viscosity.
Background technology
All can use when construct in soft soil area at present and be formed envelope wall by clay mixing pile this soft soil area is carried out encapsulation process, in order to be easy to by corresponding equipment this region evacuation, to accelerate pore water discharge, so that soil solidifying, improving its intensity.And the mud used mainly is made up of cement, sand and water, but after vacuum preloading completes, the weak band in place can be become at this envelope wall, if building is seated between envelope wall and vacuum pre-press reinforcing district, then can produce bigger differential settlement, threaten the safety of building.Therefore in the engineering having, need after vacuum preloading completes taking cement mixing pile to carry out secondary stirring reinforcing at former wax wall, to improve its bearing capacity, cause expense to rise and the duration increases.
Summary of the invention
In order to solve the deficiency that existing mud exists, the present invention provides a kind of mud prescription with stronger viscosity, to reach to improve foundation bearing capacity, it is to avoid produce the purpose of differential settlement, save construction costs.
The present invention is realized by following technical proposals: in mud bentonitic content be 7%, soda incorporation be 0.35%, the ratio of mud is 2 ~ 4, and mud severe reaches 13KN/m3Above, clay content is more than 50%, and the additive ratio of mud is 40% ~ 45%, and infiltration coefficient is less than 1 × 10cm/s, and the viscosity of its serosity controlled between 20～30 seconds.The incorporation of soda is to make the bentonite in entrance water spread out as a kind of dispersant Main Function, form the colloidal solid of a kind of outsourcing hydration shell, sodium ion and carbanion are provided, the thickness of hydration shell can be significantly increased, improve alternately rate and the stability of mud, reduce percentage of water loss, thus improve the viscosity of mud, after making mud solidification, have identical hardness with its construction area soil.
The invention has the beneficial effects as follows: be possible not only to make mud have stronger sealing, and the viscosity of mud can be significantly improved, also envelope wall can be made to meet the requirement consistent with surrounding soil compatibility of deformation simultaneously, prevent differential settlement, formula for a product is simple, construction method is simple and easy to operate, it is simple to promote the use of.
Detailed description of the invention
Mud used by mud enclosing wall draws the deformation parameter of the soil body in place by test, and calculates suitable cement and bentonite incorporation according to this deformation parameter, it is desirable to mud severe reaches 13kN/m3Above, clay content is more than 50%, the additive ratio of mud reaches 40%, infiltration coefficient is less than 1 × 10cm/s, from the point of view of the performance of many places, wherein in mud bentonitic generally content be 7%, soda incorporation be 0.35%, the ratio of mud is 2 ~ 4, so can control at about 20～30 seconds with the viscosity of its serosity, and it is effectively increased the viscosity of mud, mud can be made to have the hardness identical with construction area after hardening, to reach the requirement of deformation Tong Bu with construction area soil, prevent differential settlement.
Embodiment: after utilizing the mud of this formula that somewhere, Sichuan is carried out enclosing wall construction, through uninterrupted Continuous Observation as long as five years, built mud enclosing wall achieves Tong Bu sedimentation with region about, and top building is without skew, flawless.
Claims (1)
1. there is a mud for stronger viscosity, composed of the following components: in mud bentonitic content be 7%, soda incorporation be 0.35%, the ratio of mud is 2～4, and the additive ratio of mud is 40%～45%, and mud severe reaches 13KN/m3Above, clay content is more than 50%, and infiltration coefficient is less than 1 × 10cm/s, and the viscosity of its serosity controlled between 20～30 seconds；Described mud for carrying out Tong Bu deformation with the soil of construction area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110407711.7A CN102515642B (en) | 2011-12-09 | 2011-12-09 | A kind of mud prescription with stronger viscosity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110407711.7A CN102515642B (en) | 2011-12-09 | 2011-12-09 | A kind of mud prescription with stronger viscosity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102515642A CN102515642A (en) | 2012-06-27 |
| CN102515642B true CN102515642B (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110407711.7A Active CN102515642B (en) | 2011-12-09 | 2011-12-09 | A kind of mud prescription with stronger viscosity |
Country Status (1)
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| CN (1) | CN102515642B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898891B (en) * | 2012-12-27 | 2016-01-06 | 上海建工七建集团有限公司 | Vacuum preloading envelope wall and construction method thereof |
| CN103924579A (en) * | 2014-04-22 | 2014-07-16 | 上海市基础工程集团有限公司 | Construction method of vacuum pre-pressing foundation processing low-mixing-amount cement-soil mixed sealing wall |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872945A (en) * | 2006-06-30 | 2006-12-06 | 彭良 | Slurry forretaining wall in use for not excavating drilling |
| CN101665683A (en) * | 2009-09-08 | 2010-03-10 | 北京中煤矿山工程有限公司 | Working slurry of stop-grouting plug for mine ground pre-grouting |
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2011
- 2011-12-09 CN CN201110407711.7A patent/CN102515642B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872945A (en) * | 2006-06-30 | 2006-12-06 | 彭良 | Slurry forretaining wall in use for not excavating drilling |
| CN101665683A (en) * | 2009-09-08 | 2010-03-10 | 北京中煤矿山工程有限公司 | Working slurry of stop-grouting plug for mine ground pre-grouting |
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| Publication number | Publication date |
|---|---|
| CN102515642A (en) | 2012-06-27 |
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