CN107631971B - A kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete and device - Google Patents
A kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete and device Download PDFInfo
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- CN107631971B CN107631971B CN201710636471.5A CN201710636471A CN107631971B CN 107631971 B CN107631971 B CN 107631971B CN 201710636471 A CN201710636471 A CN 201710636471A CN 107631971 B CN107631971 B CN 107631971B
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Abstract
The invention discloses a kind of saturating sand coefficient determination method and devices of vegetation form cellular concrete, device includes funnel-like device, test specimen cover cylinder and sand recycling bins, sand-falling port is opened up on the upside of recycling bins, test specimen covers sand-falling port, test specimen cover cylinder covers test specimen, quantitative sand, which is slid down to scatter from funnel device, uniformly spills the upper surface of the test specimen into cover cylinder, enters in recycling bins through the sand of test specimen.At the time of initially moving off the slide carriage of funnel device by recording sand and all leave slide carriage, the net weight of recycling bins and the saturating sand coefficient for carrying out calculation testing piece again altogether of itself and sand are weighed: through the quality of test specimen sand in the unit time.The compatibility of vegetation type ecological celluar concrete pore structure and vegetation root system is analyzed by saturating sand coefficient.Test method and device of the invention can quickly, in time, the saturating sand coefficient of Accurate Determining, for guarantee celluar concrete vegetation have longer life cycle and evaluation celluar concrete plant natural disposition can be of great significance.
Description
Technical field
The invention belongs to vegetation form cellular concrete fields, and in particular to a kind of saturating sand coefficient of vegetation form cellular concrete is fast
Fast measuring method and device.
Background technique
It is complete caused by urban heat land effect, CO2 emission increase because of caused by the extensive application of normal concrete
The environmental problems such as ball warms, sea level rise seriously threaten the living environment of the mankind.Domestic and international researcher gradually will be mixed commonly
Solidifying soil ecology controls the acquisition of the Con trolling index such as its intensity, porosity, aperture that is, by adjusting the component and proportion of concrete
Required ecological celluar concrete；The celluar concrete for meeting vegetation growth requirement is applied in roof, greenbelt, side slope etc.
Place plays a significant role improvement urban ecological environment, fresh air.
And the grass planting function of ecological celluar concrete, key are the size of its average pore size and vegetation rhizome are allowed to penetrate
Ability；The characterizing method of existing ecology celluar concrete pore structure, as coefficient of permeability and porosity can not accurate characterization its
The ability for allowing vegetation rhizome to penetrate.The high ecological celluar concrete of saturating sand coefficient then can protrude into soil for the root system of vegetation and provide
Channel, therefore, the measurement saturating sand coefficient of celluar concrete are of great significance.
Summary of the invention
The purpose of the present invention is to provide methods and dress that one kind can quickly measure the saturating sand coefficient of vegetation form cellular concrete
It sets, the ability for allowing vegetation rhizome to penetrate come accurate judgement vegetation form cellular concrete by this method and device.
The saturating sand coefficient rapid assay methods of this vegetation form cellular concrete provided by the invention, the measurement that this method uses
Device includes slide carriage, supporting box, baffle, cover cylinder and sand recycling bins；
Slide carriage has smooth surface, and inclination is installed in supporting box, and baffle is connected in supporting box along the vertical direction
, there is gap in the top of slide carriage between the lower edge and slide carriage of baffle, the lower end that supporting box corresponds to slide carriage has and slide carriage width one
What is caused slips sand outlet, and slide carriage, supporting box and baffle is made to connect into funnel-like device；The interior chamber size and test specimen plane meter of cover cylinder
Very little identical, the cavity heights for covering cylinder are greater than height of specimen, and the top surface of recycling bins offers sand-falling port；
Porous concrete specimens are poured using the coarse aggregate of different-grain diameter, and the test specimen of every kind of partial size is divided into single layer, double
Layer and three layers three kinds, the planar dimension of test specimen is identical；
One of the test specimen of same partial size is placed on recycling bins and is corresponded at sand-falling port, is covered the side wall of test specimen with cover cylinder；
The net weight for measuring recycling bins, is denoted as m0, the relative position at the top of slide carriage and cover cylinder is adjusted, is delayed into funnel-like device
Slowly topple over load weighted quantitative sand, make gap outflow of the sand between baffle and slide carriage, dispersion is spilt down from the end of slide carriage
By the upper surface uniform fold of test specimen, timing is t since when sand leaves slide carriage end0, slide carriage is all left to sand
End moment timing is t1, and stop timing；
It moves test specimen away, measures the gross weight of sand and recycling bins, be denoted as m1；
The saturating sand coefficient of concrete sample: ρ is calculated1=(m1-m0)/(t1-t0), unit g/s passes through formula ρ1=
(m1-m0)/(t1-t0) it can be seen that saturating sand coefficient be certain time in through vegetation form cellular concrete sand quality and when
Between ratio；
Suitable data are chosen in analysis.
In a specific embodiment, concrete sample need to conserve 3 days or more, reach some strength.
In a specific embodiment, after test specimen demoulding, the attachment to surface of test piece is disposed and no-sundries are fallen
The measurement of sand coefficient will be carried out when lower again.
In a specific embodiment, the particle size range of test sand is determined by the diameter of vegetation rhizome, the slide carriage
Lower end be higher than cover cylinder top and at the top of cover cylinder between have horizontal distance, the determination of horizontal distance is with sand energy uniform fold
Subject to test specimen upper surface.
The saturating sand coefficient rapid determination device of this vegetation form cellular concrete provided by the invention, including slide carriage, support case
Body, baffle, cover cylinder and recycling bins；Slide carriage, supporting box and baffle connect into funnel-like device, and slide carriage has smooth surface, inclines
It is tiltedly installed in supporting box, baffle is connected to the top of slide carriage in supporting box, the lower edge and slide carriage of slide carriage along the vertical direction
Between have a gap, the lower end that supporting box corresponds to slide carriage, which has, slips sand outlet with slide carriage equivalent width；The interior chamber size of cover cylinder
Identical as test specimen planar dimension, the cavity heights for covering cylinder are greater than height of specimen, and the top surface of recycling bins offers sand-falling port；Cover cylinder is used
It is scattered range in limitation sand, recycling bins are used to recycle the sand for penetrating test specimen.
In one embodiment, the supporting box is the cuboid cabinet that side and top surface are open, and slide carriage tilts cloth
It is placed between two length direction side plates of supporting box, the lower end of slide carriage is concordant with the end face of supporting box open end bottom plate, slips
Angle between plate and supporting box bottom plate is adjustable, and baffle is connected to the length direction both side plate of supporting box along the vertical direction
Between, there is gap between the lower edge and slide carriage of baffle, sand is made to flow through slide carriage in single layer stream shape.
In one embodiment, the two sides of the baffle offer vertical inserting groove, the width of vertical inserting groove with it is described
The consistency of thickness of supporting box length direction side plate, by seamless between vertical inserting groove and the length direction side plate of supporting box
Connection.
In one embodiment, the width of the supporting box is the 1/3~1/2 of specimen width.
In one embodiment, the top surface of the recycling bins corresponds to and is provided with support frame around sand-falling port, under test specimen
End is placed on support frame.
Test device structure of the invention is simple, so production is simple and fast, can not only use in specimen prefabricated factory, but also energy
It uses at the construction field (site), can quickly measure the saturating sand coefficient of celluar concrete, test sand is recycled with concrete sample to be made
With, be averaged after can repeatedly measuring sand coefficient, reduce test error.Measuring method of the invention, defines sand for the first time
Through the quality of sand in coefficient, i.e. unit time, can quantitative analysis vegetation form cellular concrete allow vegetation root system to penetrate energy
Power guarantees that the vegetation rhizome of plantation is good to accurately determine that the celluar concrete is adapted to plant the vegetation of which kind of rhizome
Through celluar concrete.In short, test method and device of the invention can quantitative analysis celluar concrete pore structure and vegetation
The structural compatibility of root system, can quickly, in time, the saturating sand coefficient of Accurate Determining, for guarantee celluar concrete vegetation have compared with
Long life cycle, which plants natural disposition with evaluation celluar concrete, to be of great significance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of single layered porous concrete sample of the invention.
Fig. 2 is the saturating sand coefficient testing device schematic diagram of vegetation form cellular concrete of one embodiment of the invention.
In figure: 1, veneer；2, cuboid carton；3, wooden baffle；4, paper tube；5, wooden back-shaped support frame；6, it returns
Receive case.
Specific embodiment
Coarse aggregate using different-grain diameter of the invention pours test specimen, and the test specimen of every kind of partial size pours three kinds respectively: single layer,
Double-deck and three layers, the planar dimension of each test specimen is identical.
The saturating sand coefficient testing device of this vegetation form cellular concrete disclosed by the invention, including slide carriage, supporting box, gear
Plate, cover cylinder and recycling bins.Slide carriage, supporting box and baffle connect into funnel-like device, and slide carriage has smooth surface, inclination installation
In in supporting box, baffle is connected to the top of slide carriage in supporting box along the vertical direction, has between the lower edge and slide carriage of slide carriage
Gap, the lower end that supporting box corresponds to slide carriage has to be exported with the sand that slips of slide carriage equivalent width；The interior chamber size and test specimen of cover cylinder
Planar dimension is identical, and the cavity heights for covering cylinder are greater than height of specimen, and the top surface of recycling bins offers sand-falling port；Cover cylinder is for limiting
Sand is scattered range, and recycling bins are used to recycle the sand for penetrating test specimen.
The method of this quick saturating sand coefficient of measurement celluar concrete disclosed by the invention, mainly comprises the steps that
(1) prepared by concrete sample；
(2) experimental rig installation and debugging；
(3) the saturating sand coefficient determination of test specimen；
(4) test data is handled；
(5) device precise verification.
The saturating sand coefficient determination side of vegetation form cellular concrete disclosed by the invention is illustrated with a specific embodiment below
Method.
(1) prepared by concrete sample
It is 9.5mm~16mm, 16mm~19mm, 19mm~26.5mm that the test specimen of the present embodiment, which is utilized respectively particle size interval,
Coarse aggregate, and cement, water, according to determining water-cement ratio and gelatine ratio, agitated and molding of slightly vibrating be made single layer, bilayer and
Three layers of nine porous concrete specimens, the planar dimension of each test specimen are that (single layer refers to that coarse aggregate tiles to 150mm × 150mm
It is one layer, no accumulation, model is shown in Fig. 1, other and so on).
Pour the normal concrete die trial that die trial uses 150mm*150mm*150mm, die trial upper opening and detachable, examination
Part need to conserve three days in standard curing room, so that test specimen reaches some strength, prevent test specimen in experimentation from destroying.
(2) measurement device installation and debugging
As shown in Fig. 2, the supporting box of the present embodiment measurement device uses cuboid carton, the width of cuboid carton
It spends direction one side and top surface is open side.The slide carriage veneer smooth using surface, baffle use wooden baffle, and cover cylinder is adopted
With paper tube, the top and bottom of paper tube are open end, and recycling bins use the carton of cuboid, the side of offering on the upside of carton
The sand-falling port of shape.Since recycling bins use carton, so wooden back-shaped support frame is arranged around sand-falling port on recycling bins.
Specific installation steps enter as follows:
(1) cuboid carton, veneer and wooden baffle are assembled into funnel-like device
The width of veneer 1 and cuboid carton 2 it is of same size, be the 1/3~1/2 of specimen width, by veneer
Inclination is installed between two length direction side plates of cuboid carton, and is made between veneer and cuboid carton bottom plate
Angle is 31 °.Wooden baffle 3 is plugged on two length direction side plates of cuboid carton again, is opened up on wooden baffle
The width of two vertical slots, vertical slot is identical as the thickness of cuboid carton side plate, the distance between two vertical slots and cuboid
The inner width of shape carton is identical, and being in close contact wooden baffle and veneer and carton side plate seamless ensures not sand leakage, while wood
The spacing that 3mm is reserved between the lower edge of matter baffle and the upper surface of veneer, makes sand flow through slide carriage in single layer stream shape.
(2) recycling bins and the installation of wooden circular frame
Recycling bins use the carton of 211mm*206mm*98mm, open up 134mm*134mm's at the upper surface center of carton
Its net quality is weighed after square hole, is denoted as m0；The inner cavity of wooden back-shaped support frame, will be wooden back-shaped having a size of 129mm*129mm
Support frame is placed in the surface of square hole.
(3) production covers the paper tube of test specimen
The inner cavity for covering the paper tube of test specimen is identical as the size of test specimen, and a height of 220mm, upper and lower side is open end.
(3) the saturating sand coefficient determination of test specimen
(1) it dries to concrete sample to sand is not adhered to, test is dried to quality with sand and is no longer changed, and passes through mark
Quasi- vibrating sieving machine Sieving and casing range is the sand 2kg of 1.16mm~2.36mm；
(2) single layer test specimen made of 9.5mm~16mm coarse aggregate is placed in the surface of wooden back-shaped support frame, is used in combination
Paper tube covers test specimen；
(3) position for the funnel-like device that adjustment has assembled: by the width direction open side direction of cuboid carton
Paper tube, the width direction median plane for adjusting cuboid carton bottom surface is coplanar with the median plane of the respective direction of paper tube, makes veneer
Horizontal distance of the plate lower end at the top of paper tube corresponding side is 107mm, and vertical distance is 128mm, the horizontal distance, vertical
Distance and 31 ° of angles between the front veneer adjusted and cuboid carton bottom plate, it is ensured that sand is spilt from veneer end
The upper surface of uniform fold test specimen into paper tube.Since test sand only has 300g, device does not have movement during slipping sand, therefore
Without fixation, it need to only be well placed relative position.
(4) electronic scale weighs 300g sand in beaker, while preparing stopwatch；
Into funnel-like device at the uniform velocity, slowly topple over sand, start timing when sand leaves veneer, initial time note
For t0；The stopping timing of veneer moment is left completely to 300g sand, is denoted as t this moment1；
(5) wooden back-shaped support frame, test specimen and paper tube are moved away after the completion of sand thoroughly, weighs sand and recycling using electronic scale
The gross mass of case, is denoted as m1。
(4) data processing
(1) according to the saturating sand initial time t of record0With finish time t1, calculate duration used in sand process；By recycling bins
Net quality m0With the gross mass m of sand and recycling bins1, sand time (t can be calculated1-t0) in through test specimen sand quality
(m1-m0).The saturating sand coefficient ρ that the test specimen carries out sand experiment can be obtained by bringing data into following formula1。
ρ1=(m1-m0)/(t1-t0), in formula, m0And m1Unit be g, t1And t0Unit be s.The same test specimen is repeatedly
Test three times, obtains sand coefficient ρ respectively2And ρ3。
(2) similarly, single layer, bilayer made of 9.5mm~16mm coarse aggregate and three layers of test specimen are tested respectively, obtain three
A sand coefficient.Similarly, the test specimen that the coarse aggregate of other two kinds of 16mm~19mm and 19mm~26.5mm pours is referring to above-mentioned step
Rapid test.
(3) data decimation principle: in the maximum value or minimum value of the same test specimen three saturating sand coefficient test values, if there is
When the difference of one and median is more than the 5% of median, then casts out maximum value and minimum value takes median；If maximum value and most
The difference of small value and median is more than the 5% of median, then the test result of this group of test specimen is invalid.Through checking, this group of data
The difference of maximum value or minimum value and median is respectively 2.6%, 0.39%, is less than 5%, i.e. this group of data are effective.Finally
The saturating sand coefficient of each test specimen measurement see the table below:
(5) device precise verification
Device is from verifying: for the accuracy for further verifying this measurement device, the single layer of 19mm~26.5mm grade being tried
Part individually carries out saturating sand coefficient determination three times.
Experimental data see the table below, maximum value 17.76, median 17.35, minimum value 16.92, maximum value and centre
The difference of value is 0.41, which is the 2.36% of median, and the difference of median and minimum value is 0.43, which is centre
The 2.47% of value.It follows that the accuracy of sand coefficient determination method disclosed by the invention is reliable.
Claims (9)
1. a kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete, it is characterised in that: the measurement device of use includes
Slide carriage, supporting box, baffle, cover cylinder and sand recycling bins；
Slide carriage has smooth surface, and inclination is installed in supporting box, and baffle is connected to slide carriage in supporting box along the vertical direction
Top, have gap between the lower edge and slide carriage of baffle, the lower end that supporting box corresponds to slide carriage has and slide carriage equivalent width
Sand outlet is slipped, slide carriage, supporting box and baffle is made to connect into funnel-like device；The interior chamber size of cover cylinder and test specimen planar dimension phase
Together, the cavity heights for covering cylinder are greater than height of specimen, and the top surface of recycling bins offers sand-falling port；
Porous concrete specimens are poured using the coarse aggregate of different-grain diameter, the test specimen of every kind of partial size be divided into single layer, bilayer and
Three layers three kinds, the planar dimension of test specimen is identical；
One of the test specimen of same partial size is placed on recycling bins and is corresponded at sand-falling port, is covered the side wall of test specimen with cover cylinder；
The net weight for measuring recycling bins, is denoted as m0, the relative position at the top of slide carriage and cover cylinder is adjusted, is slowly inclined into funnel-like device
Load weighted quantitative sand, makes gap outflow of the sand between baffle and slide carriage, and from the end of slide carriage, dispersion is spilt lower by examination
The upper surface uniform fold of part, timing is t since when sand leaves slide carriage end0, the end of slide carriage is all left to sand
Moment timing is t1, and stop timing；
It moves test specimen away, measures the gross weight of sand and recycling bins, be denoted as m1；
The saturating sand coefficient of concrete sample: ρ is calculated1=(m1-m0)/(t1-t0), unit g/s, saturating sand coefficient is a timing
It is interior through the quality of vegetation form cellular concrete sand and the ratio of time；
Suitable data are chosen in analysis.
2. the saturating sand coefficient rapid assay methods of vegetation form cellular concrete according to claim 1, it is characterised in that: coagulation
Native test specimen need to conserve 3 days or more, reach some strength.
3. the saturating sand coefficient rapid assay methods of vegetation form cellular concrete according to claim 1, it is characterised in that: test specimen
After demoulding, the measurement of sand coefficient is carried out again when the attachment on its surface is disposed and no-sundries are fallen.
4. the saturating sand coefficient rapid assay methods of vegetation form cellular concrete according to claim 1, it is characterised in that: test
It is determined with the particle size range of sand by the diameter of vegetation rhizome, the lower end of slide carriage is higher than the top of cover cylinder and has between cover cylinder top
Sand energy uniform fold test specimen upper surface is subject in horizontal distance, the determination of horizontal distance.
5. a kind of saturating sand coefficient rapid determination device of vegetation form cellular concrete, it is characterised in that: the device includes slide carriage, support
Cabinet, baffle, cover cylinder and sand recycling bins；Slide carriage, supporting box and baffle connect into funnel-like device, and slide carriage has smooth table
Face, inclination are installed in supporting box, and baffle is connected to the top of slide carriage in supporting box along the vertical direction, the lower edge of slide carriage with
There is gap between slide carriage, the lower end that supporting box corresponds to slide carriage has to be exported with the sand that slips of slide carriage equivalent width；The inner cavity of cover cylinder
Size is identical as test specimen planar dimension, and the cavity heights for covering cylinder are greater than height of specimen, and the top surface of recycling bins offers sand-falling port；Cover
Cylinder is scattered range for limiting sand, and recycling bins are used to recycle the sand for penetrating test specimen.
6. the saturating sand coefficient rapid determination device of vegetation form cellular concrete as claimed in claim 5, it is characterised in that: the branch
Supportting cabinet is the cuboid cabinet that width direction side and top surface are open, and slide carriage is in tilted layout in two length sides of supporting box
To between side plate, the lower end of slide carriage is concordant with the end face of supporting box open end bottom plate, between slide carriage and supporting box bottom plate
Angle is adjustable, and baffle is connected to along the vertical direction between the length direction both side plate of supporting box, the lower edge and slide carriage of baffle
Between have gap, so that sand is flowed through slide carriage in single layer stream shape.
7. the saturating sand coefficient rapid determination device of vegetation form cellular concrete as claimed in claim 6, it is characterised in that: the gear
The two sides of plate offer vertical inserting groove, the thickness one of the width of vertical inserting groove and the supporting box length direction side plate
It causes, by being seamlessly connected between vertical inserting groove and the length direction side plate of supporting box.
8. the saturating sand coefficient rapid determination device of vegetation form cellular concrete as claimed in claim 6, it is characterised in that: the branch
The width for supportting cabinet is the 1/3~1/2 of specimen width.
9. the saturating sand coefficient rapid determination device of vegetation form cellular concrete as claimed in claim 5, it is characterised in that: described time
The top surface for receiving case, which corresponds to, is provided with support frame around sand-falling port, the lower end of test specimen is placed on support frame.
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| CN201710636471.5A CN107631971B (en) | 2017-07-31 | 2017-07-31 | A kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710636471.5A CN107631971B (en) | 2017-07-31 | 2017-07-31 | A kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete and device |
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| CN107631971B true CN107631971B (en) | 2019-08-06 |
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| CN117740652B (en) * | 2024-02-19 | 2024-05-10 | 中国地质大学（武汉） | Method and system for rapidly determining sand penetration coefficient of vegetation porous concrete |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102359929A (en) * | 2011-09-07 | 2012-02-22 | 福建工程学院 | Test method for permeation coefficient of permeable concrete |
| CN103234887A (en) * | 2013-04-10 | 2013-08-07 | 山东建泽混凝土有限公司 | A detection method for valid communicating porosity of a porous continuous planting concrete specimen |
| CN203720054U (en) * | 2014-03-07 | 2014-07-16 | 浙江大学宁波理工学院 | Porous vegetation concrete permeability performance determinator |
| CN103951333A (en) * | 2014-04-24 | 2014-07-30 | 宋金博 | Porous concrete prepared from waste road concrete aggregate and preparation process |
| CN204988971U (en) * | 2015-10-10 | 2016-01-20 | 厦门市工程检测中心有限公司 | Permeation coefficient detection device |
| CN106442259A (en) * | 2016-09-22 | 2017-02-22 | 中南林业科技大学 | Method and device for rapidly determining effective porosity of ecological porous concrete |
-
2017
- 2017-07-31 CN CN201710636471.5A patent/CN107631971B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359929A (en) * | 2011-09-07 | 2012-02-22 | 福建工程学院 | Test method for permeation coefficient of permeable concrete |
| CN103234887A (en) * | 2013-04-10 | 2013-08-07 | 山东建泽混凝土有限公司 | A detection method for valid communicating porosity of a porous continuous planting concrete specimen |
| CN203720054U (en) * | 2014-03-07 | 2014-07-16 | 浙江大学宁波理工学院 | Porous vegetation concrete permeability performance determinator |
| CN103951333A (en) * | 2014-04-24 | 2014-07-30 | 宋金博 | Porous concrete prepared from waste road concrete aggregate and preparation process |
| CN204988971U (en) * | 2015-10-10 | 2016-01-20 | 厦门市工程检测中心有限公司 | Permeation coefficient detection device |
| CN106442259A (en) * | 2016-09-22 | 2017-02-22 | 中南林业科技大学 | Method and device for rapidly determining effective porosity of ecological porous concrete |
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