CN206891810U - Control the device of lightweight solidified earth density and intensity - Google Patents
Control the device of lightweight solidified earth density and intensity Download PDFInfo
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- CN206891810U CN206891810U CN201720388701.6U CN201720388701U CN206891810U CN 206891810 U CN206891810 U CN 206891810U CN 201720388701 U CN201720388701 U CN 201720388701U CN 206891810 U CN206891810 U CN 206891810U
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- soil sample
- mould
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- intensity
- soil
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model provides the device of control lightweight solidified earth density and intensity, the device includes soil sample placement part and control frothing part, the soil sample placement part includes soil sample area, mould, airtight impermeable layer and through hole, two airtight impermeable layers are wrapped in mould upper and lower ends, through hole is evenly distributed at outer mold wall sustained height, and soil sample area is mould and the space of the airtight impermeable layer formation of its lower end.The control frothing part includes two iron wires and pad, and two iron wires are each passed through four through holes into right-angled intersection, and outer mold wall is waled in bending downwards, and pad is located at soil sample upper surface, is uniformly distributed seven air-vents thereon.Beneficial effect is that device making is simple, easy to operate, cost is cheap, formula accuracy is high, by controlling the foaming degree of lightweight solidified earth to control the density of the soil body, change the intensity of lightweight solidified earth according to different engineering situations, a kind of convenient means are provided for different engineering constructions requirement.
Description
Technical field
It the utility model is related to soil lightweight curing technology field and engineering construction field, and in particular to one kind control lightweight
The device of solidified earth density and intensity.
Background technology
Soil lightweight curing agent be it is a kind of by curing agent, foaming agent synthesize solidifying the novel energy-conserving ring of all kinds of soil
Engineering material is protected, there is inexpensive, the characteristics of easy to make, ecological, environmental protective.For the salinized soil that need to be improved, according to the thing of soil
It reason and chemical property, only need to mix a certain amount of lightweight curing agent, add water, through mixing thoroughly, oscillation treatment, you can reach needs
Performance indications.Lightweight stabilized saline soil has the characteristics of lightweight and small density, substitutes portion by expanded material in preparation process
Divide raw material soil, form hole shape structure, and because curing materials are acted on so that the structure of light soil is relatively stable.Solidified light
These features of soil are not only able to the deadweight of bigger mitigation ground in itself during practice of construction, but also can reduce original
Expect the materials of soil, reduce construction costs.In the case that solidified light soil density is slightly lifted, the native intensity of solidified light has bright
Aobvious lifting, its is structural also more preferable.
It is the condition needed according to field engineering to prepare a kind of new lightweight solidified earth, is passed through during testing indoors
Certain test method finds the optimum proportioning of several stocks, unified preparation method, detects sample items physics and mechanics
Whether performance can meet engine request.By experiment, produced in testing indoors and meet different grounds and subgrade construction
It is required that lightweight solidified earth, prepared for the specific test feature of follow-up study lightweight stabilized saline soil soil.
However, the problem of existing in terms of preparing lightweight solidified earth at present：Different field execution conditions and different operating modes pair
In the different of lightweight solidified earth intensity requirement, it is necessary to prepare the lightweight curing agent of heterogeneity proportioning, it is necessary to by largely contrasting
Experiment obtains optimum proportioning, consumes substantial amounts of time and cost.Thus, there is an urgent need to one kind can control lightweight stabilized saline soil
The device of foam volume, under conditions of lightweight hardener formula is not changed, by the foaming degree i.e. soil body for controlling the soil body
Density, change the intensity of lightweight solidified earth according to different engineering situations, so as to reach the requirement for meeting engineering construction.
The content of the invention
The utility model purpose is to provide a kind of device for controlling lightweight solidified earth density and intensity, realizes and is sent out for the soil body
Bubble degree is the control of soil body density, to meet requirement of the different operating modes to the improvement soil body.And the invention must possess making it is simple,
The easy to operate, feature such as cost is cheap, accuracy is high, in order to change the intensity of lightweight solidified earth according to different engineering situations.
To achieve the above object, the present invention provides a kind of device for controlling lightweight solidified earth density and intensity, wherein：The dress
Put including soil sample placement part and control frothing part, the soil sample placement part includes soil sample area, mould, airtight waterproof
Film and through hole, two airtight impermeable layers are wrapped in mould upper and lower ends, and through hole is evenly distributed on outer mold wall sustained height
Place, soil sample area are mould and the space of the airtight impermeable layer formation of its lower end.The control frothing part includes two iron
Silk and pad, two iron wires are each passed through four through holes into right-angled intersection, and outer mold wall is waled in bending downwards, and pad is positioned at soil
Sample upper surface, seven air-vents are uniformly distributed thereon.
The beneficial effects of the utility model are that the device prepares and makees the spies such as simple, easy to operate, cost is cheap, accuracy is high
Point, a kind of convenient means are provided for the soil strength change of different engineering constructions requirement.Do not changing lightweight hardener formula
Under the conditions of, by controlling the foaming height i.e. density of the soil body of the soil body, change the strong of lightweight solidified earth according to different engineering situations
Degree.Due to can be controlled using apparatus of the present invention in lightweight solidified earth foaming process to foaming height, solidified light soil
In the case that density is slightly lifted, the intensity of solidified light soil, which has, to be obviously improved, and its is structural also more preferable.Therefore do not changing
Under conditions of lightweight curing agent optimum proportioning, reach the density for changing solidified light soil, so as to change the purpose of soil strength.Survey
Its unconfined compressive strength is measured compared with the soil strength of engineering requirements, error is between 6.7%~9.8%, in engineering
Belong to acceptable scope in practical application.
Brief description of the drawings
Fig. 1 is the 3 d effect graph that the utility model is used to control lightweight solidified earth density and intensity device；
Fig. 2 is the side view that the utility model is used to control lightweight solidified earth density and intensity device；
Fig. 3 is the top view that the utility model is used to control lightweight solidified earth density and intensity device；
Fig. 4 is the matched curve figure that soil body unconfined compressive strength changes with density, age curing period.
In figure：
1st, iron wire 2, airtight impermeable layer 3, mould 4, soil sample area 5, pad 6, through hole 7, air-vent
Embodiment
Control lightweight solidified earth density of the present utility model is illustrated with intensity device with reference to accompanying drawing.
The device of control lightweight solidified earth density and intensity of the present utility model, the device include soil sample placement part and control
Frothing part processed, the soil sample placement part include soil sample area 4, mould 3, airtight impermeable layer 2 and through hole 6, and two impermeable
Gas impermeable layer 2 is wrapped in the upper and lower ends of mould 3, and through hole 6 is evenly distributed at the outer wall sustained height of mould 3, and soil sample area 4 is mould
The space that tool 3 and the airtight impermeable layer 2 of its lower end are formed.The control frothing part includes two iron wires 1 and pad 5,
Two iron wires 1 are each passed through four through holes 6 into right-angled intersection, and outer mold wall is waled in bending downwards, and pad 5 is located at soil sample upper table
Face.
Control lightweight solidified earth density of the present utility model respectively forms portion of material and size with intensity device：Form the dress
The mold materials put are PVC cylindrical tubes, outer diameter 40mm, thickness 2mm, are highly 100mm.It is high that soil sample area loads the soil body
Spend for 60mm.Gasket material is lucite, a diameter of 36mm.Two a diameter of 2mm of iron wire.
Control lightweight solidified earth density of the present utility model, in use, exemplified by improveing salinized soil, uses with intensity device
The salinized soil for being 2% compared with high salinity is undisturbed soil, prepares the curing agent of optimal proportion：On the basis of salinized soil weight, weigh
The water 55% of 55% weight, on the basis of the weight sum of salinized soil and water, weigh the lightweight curing agent of 21.52% weight.
(1) salinized soil is weighed, add water according to given optimal curing agent proportioning stirs with lightweight curing agent, will stir
Uniform mud is poured into mould 3, vibrates closely knit formation soil sample 4, and the permeable watertight film 2 that the outer wall of mould 3 wraps up shown in Fig. 1 enters
Row maintenance, makes its natural foaming.Curing time is 7 days, 20 DEG C~25 DEG C of keeping temperature and humidity 50%~60% during maintenance
It is fixed；
(2) soil sample after maintenance in 7 days is stripped, measures the height h and intensity of soil sample, its height h is set to unit height
h1.0, pass through formula
ρ=M/ π R2h(1)
Obtain ρ1.0, it is set as unit intensity, ρ is then obtained according to formula 11.1、ρ1.2、ρ1.3In the case of h1.1、h1.2、
h1.3；Three moulds 3 are taken, respectively apart from its bottom h1.1、h1.2、h1.3Locate it is each make a call to four equally distributed circular holes of sustained height,
It is another to take the soil sample that three parts of quality are M, it is respectively put into above three mould 3, in one layer of pad 5 of soil sample upper surface covering, and
Two iron wires 1 are placed in four right-angled intersections of through hole 6, and the both ends of iron wire 1 bend downwards hoop and block mould 3, to the outer wall of mould 3 parcel
Permeable watertight film 2 is conserved, and curing time is 7 days, and 20 DEG C~25 DEG C of keeping temperature and humidity 50% during maintenance~
60% fixes, by ρ1.0、ρ1.1、ρ1.2、ρ1.3Four parts of soil samples be set to a group A；Produced according still further to above method and be same as group A in addition
Three groups of soil samples B, C, D, it is conserved respectively 14 days, 28 days, 60 days.
(3) resisting without lateral spacing for tetra- groups of lightweight solidified earths of A, B, C, D of above-mentioned preparation is measured using unconfined compressive strength instrument
Compressive Strength
Measurement result is as shown in table 1：
Unconfined compressive strength table table 1
Intensity is drawn with density and the curve map of age change according to this table, and uses Origin softwares, fits curve,
As shown in Figure 4.
Regression analysis is carried out by Origin softwares, Origin is the more popular professional letter that OriginLab companies produce
Number mapping software.Obtain calculation formula (2) of the solidified light soil intensity with variable density relation
Wherein a, b, c are respectively the constant term of density, 1 power, 2 power fitting parameters, and its value is shown in Table 2：
Fit parameter list table 2
| Age phase/d | a | b | c | R2 |
| 7 | 3.2207 | 0.76695 | 0.55041 | 0.96831 |
| 14 | 3.19736 | 1.87366 | 0.0587 | 0.98008 |
| 28 | 3.09389 | 2.96359 | -0.56214 | 0.99198 |
| 60 | 0.87203 | 6.83431 | -2.16775 | 0.98534 |
Result difference under different radixes, R can be seen that by above-mentioned fitting2Meeting for fitting effect can be reacted
Degree, closer to 1, show that fitting effect is better.When age radix phase of selection is shorter, fitness bias is larger, this be due to
This stage belongs to the gain in strength stage, and Strength Changes are larger, when choose age phase be 28d intensity as radix when, qualified rates of fitting compared with
Height, at this moment solidified light soil intensity is relatively stable, therefore it is more accurate as radix to choose the intensity that age phase is 28d.With reference to public affairs
Formula (2) considers with table 2 draws equation below (3)：
In summary, show that the prediction changed without lateral compressive strength with variable density of lightweight stabilized saline soil is public
Formula (3), in Practical Project construction, according to Different field execution conditions and different operating modes for lightweight solidified earth intensity requirement
Difference, can not change lightweight curing agent proportioning in the case of, calculate the corresponding density ρ of prescribed strength, and pass through public affairs
Formula (1) calculates the foaming height h under the soil body this density, limits its foaming height h with the utility model device and prepares symbol
Close the soil body of engine request intensity.The present apparatus has larger help to practical engineering application.
Claims (2)
1. one kind control lightweight solidified earth density and intensity device, it is characterized in that：The device includes soil sample placement part and control
Frothing part, the soil sample placement part include soil sample area (4), mould (3), airtight impermeable layer (2) and through hole (6), and two
Open airtight impermeable layer (2) and be wrapped in mould (3) upper and lower ends, through hole (6) is evenly distributed on mould (3) outer wall sustained height
Place, soil sample area (4) are mould (3) and the space of airtight impermeable layer (2) formation of its lower end；The control foaming portion subpackage
Two iron wires (1), pad (5) and air-vent (7) are included, two iron wires (1) are each passed through four through holes (6) into right-angled intersection, and
Bending hoop is stuck in outer mold wall downwards, and pad (5) is located at soil sample upper surface, is uniformly distributed seven air-vents (7) thereon.
2. control lightweight solidified earth density according to claim 1 and intensity device, it is characterized in that：The mould (3) is
The cylindrical tube of PVC material, outer diameter 40mm, thickness 2mm, it is highly 100mm, the height that soil sample area loads soil sample is
60mm, pad (5) be diameter 36mm pmma material, a diameter of 2mm of two iron wires (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720388701.6U CN206891810U (en) | 2017-04-14 | 2017-04-14 | Control the device of lightweight solidified earth density and intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720388701.6U CN206891810U (en) | 2017-04-14 | 2017-04-14 | Control the device of lightweight solidified earth density and intensity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206891810U true CN206891810U (en) | 2018-01-16 |
Family
ID=61324194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720388701.6U Expired - Fee Related CN206891810U (en) | 2017-04-14 | 2017-04-14 | Control the device of lightweight solidified earth density and intensity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206891810U (en) |
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2017
- 2017-04-14 CN CN201720388701.6U patent/CN206891810U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20180414 |