CN109142132A - A kind of aggregate storage coefficient test device and its test method - Google Patents
A kind of aggregate storage coefficient test device and its test method Download PDFInfo
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- CN109142132A CN109142132A CN201811277268.4A CN201811277268A CN109142132A CN 109142132 A CN109142132 A CN 109142132A CN 201811277268 A CN201811277268 A CN 201811277268A CN 109142132 A CN109142132 A CN 109142132A
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- 238000003860 storage Methods 0.000 title claims abstract description 98
- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000010998 test method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 267
- 239000007921 spray Substances 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 18
- 238000005303 weighing Methods 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- 239000012780 transparent material Substances 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 37
- 238000011156 evaluation Methods 0.000 abstract description 4
- 229920006395 saturated elastomer Polymers 0.000 description 15
- 239000002245 particle Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000005507 spraying Methods 0.000 description 9
- 239000002699 waste material Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 6
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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- 238000007710 freezing Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
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- 238000003672 processing method Methods 0.000 description 1
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
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Abstract
The invention discloses a kind of aggregate storage coefficient test device and its test methods, comprising the following steps: impregnates for 24 hours pretreatment aggregate, takes out, dry moisture, weigh the quality m of the dry aggregate of saturation plane1；The gross mass m of water jet and water before weighing water spray2；Tube for feed and sieve are moistened, the dry aggregate of saturation plane is placed in tube for feed, is sprayed water using water jet, until tube for feed bottom has water droplet to drip or water column outflow, stopping water spray obtaining maximum saturation aggregate, the gross mass m of water jet and water after weighing water spray3；By maximum saturation aggregate, drying to constant weight, is cooled to room temperature, and weighs the quality m of oven-dried aggregate4, pass through formulaCalculate aggregate storage coefficient Q.The apparatus structure is simple, low cost, easy to operate, can detect the storage coefficient and water absorption rate of aggregate simultaneously, be particularly suitable for the evaluation to construction refuse regenerated aggregate water storage performance and water absorbing properties, provide reference for sponge city selection construction refuse regenerated aggregate；Its test method is simple, and testing cost is low.
Description
Technical field
The present invention relates to hydraulic engineering technical fields, and in particular to a kind of aggregate storage coefficient test device and its test side
Method is mainly used for the test of construction refuse regenerated aggregate storage coefficient.
Background technique
The main component of building waste is inorganic material, and acidproof, alkaline-resisting, water-tolerant, chemical property is more stable, simultaneously
Also have a stable physical property: particle is big, good water permeability, not freezing up, plasticity are small, by processing will be it is a kind of well
Construction material is applied to engineering construction again, can accomplish to make the best use of everything, turn waste into wealth.Compared with natural rubble, building waste is again
The characteristics such as raw aggregate has loose, porous, lightweight, (storages) water is functional thoroughly are especially suitable for sponge urban construction for building
The needs of material.Both " sponge city " and " construction refuse resource utilization " is combined closely, by construction refuse regenerated aggregate
It is detained the biologies such as careless ditch for Rain Garden, biology and is detained facility, to alleviate the discharge pressure of city sewer, reduces in city
Flood pushes sponge urban construction.
But still belongs to blank about the experimental rig and method of the water storage performance evaluation of construction refuse regenerated aggregate at present, test
When there is no corresponding instrument and equipment or specification, standard referring to operation, therefore, it is impossible to accurately test out the water resistance of recycled aggregate
It can evaluation index --- storage coefficient.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of aggregate storage coefficient test devices
And its test method, the apparatus structure is simple, low cost, easy to operate, can detect the storage coefficient and water absorption rate of aggregate simultaneously, especially
It is suitable for the evaluations to construction refuse regenerated aggregate water storage performance and water absorbing properties, select for sponge city construction refuse regenerated
Aggregate provides reference；Its test method is simple, and testing cost is low.
In order to achieve the above object, the present invention is achieved by the following scheme.
(1) a kind of aggregate storage coefficient test device, the storage coefficient for test architecture garbage regeneration aggregate, comprising:
Water jet, tube for feed and water receiver；Wherein, the tube for feed is placed in the upper end of the water receiver, the bottom of the tube for feed
For open end, the open end is provided with sieve；The water jet into the tube for feed for spraying water.
Aggregate storage coefficient test device according to the present invention, for the storage coefficient of test architecture garbage regeneration aggregate,
Tube for feed is for holding aggregate.The aggregate water spray that water jet is used to hold into tube for feed, makes aggregate reach water-saturated state, charge
Sieve in cylinder in tube for feed, and by moisture extra in the aggregate of water-saturated state for leading to the aggregate storing of water-saturated state
The sieve pore for crossing sieve is flow in water receiver.Water receiver is used to store moisture extra in the aggregate of water-saturated state, and observable is contained
Aggregate in barrel whether have water droplet drip or water column outflow.Aggregate storage coefficient test device structure of the invention is simple, makes
Valence is low, easy to operate, testing cost is low, can quickly detect the storage coefficient of aggregate.
The test method of aggregate storage coefficient test device of the invention to storage coefficient are as follows: aggregate is soaked in water
After for 24 hours, the water in aggregate surface and internal connection hole is all saturated, using the wet towel wrung out by the water of particle surface
Point gently wipe dry, it is the dry shape of natural saturation plane of aggregate that aggregate internal void is aqueous at this time, which reaches saturation and its surface is still dry,
State.Sprayed water again using water jet in aggregate surface, the gap between aggregate surface hole and aggregate can further water storage, work as water storage
Reach utmostly i.e. saturation state when, the water in interconnected pore can be under the collective effect of gravity and pore water tension, downwards
Water flow is oozed out and converges into, the moment seeped under water saturation is water storage saturation state, quality that water jet is sprayed water again and aggregate
Mass values are the storage coefficient of aggregate.
Preferably, the screen size of the sieve is 0.4~0.8mm.
Aggregate storage coefficient test device according to the present invention, the screen size of sieve are 0.4~0.8mm, building waste
The partial size of recycled aggregate is greater than the aperture of sieve pore, it is ensured that construction refuse regenerated aggregate will not fall to water receiver from sieve pore
It is interior, while water energy extra in energy construction refuse regenerated aggregate is smoothly dripped from sieve pore.
Preferably, scale is provided on the inner wall of the tube for feed.
Aggregate storage coefficient test device according to the present invention, the inner wall of tube for feed are provided with scale from the bottom up, can be with
The thickness of construction refuse regenerated aggregate is directly read, it is convenient intuitive.
Preferably, the material of the water receiver is transparent material.
It is further preferred that the transparent material is organic glass material.
Aggregate storage coefficient test device according to the present invention, water receiver is transparent organic glass material, convenient for intuitive
Seen whether that water drops to water receiver from tube for feed, have water drippage moment stop spraying water immediately, thus accurately determine water spray
The dosage of device water spray, guarantees the accuracy of storage coefficient measurement.
Preferably, the height of the tube for feed is 25~35cm, and the diameter of tube for feed is 25~35cm.
Aggregate storage coefficient test device according to the present invention, the height of tube for feed is 25~35cm, diameter be 25~
35cm can satisfy the charge demand of construction refuse regenerated aggregate.
Preferably, the height of the water receiver is 25~35cm, and the diameter of water receiver is 25~35cm.
Aggregate storage coefficient test device according to the present invention, the height of water receiver is 25~35cm, diameter be 25~
35cm matches with the specification of tube for feed, and the water energy overflowed after aggregate saturation in tube for feed is made all to fall to water receiver.
(2) a kind of test method of aggregate storage coefficient, comprising the following steps:
Step 1, aggregate is taken, drying to constant weight by the aggregate, is cooled to room temperature, and cleans, removes the dust of aggregate surface
With clast powder, pretreatment aggregate is obtained；
Step 2, the pretreatment aggregate is impregnated for 24 hours, takes out aggregate, dries the moisture of aggregate surface, must be saturated
The dry aggregate in face weighs the quality m of the dry aggregate of saturation plane1；
Step 3, the gross mass m of water jet and water before weighing water spray2；
Step 4, the two sides of the inner wall of tube for feed and sieve is moistened with water, the dry aggregate of the saturation plane is placed in described
In tube for feed, then tube for feed is placed in the upper end of water receiver, is sprayed water using water jet into the tube for feed, until charge
Cylinder bottom have water droplet drip or water column outflow, stop water spray, obtain maximum saturation aggregate, weigh water spray after water jet and water it is total
Quality m3；
Step 5, by the maximum saturation aggregate, drying to constant weight, is cooled to room temperature, obtains oven-dried aggregate, weighs oven-dried aggregate
Quality m4, pass through formulaCalculate aggregate storage coefficient Q.
Preferably, the water absorption rate w of the aggregate passes through formulaIt calculates.
Preferably, in step 1, the temperature of the drying is 100~110 DEG C.
Preferably, in step 2, the temperature of the immersion is 15~25 DEG C.
Preferably, in step 5, the temperature of the drying is 100~110 DEG C.
Compared with prior art, the invention has the benefit that
(1) after aggregate storage coefficient test device of the invention is by the way that recycled aggregate to be soaked in water for 24 hours, recycled aggregate
Water in surface and internal connection hole is all saturated, and is gently wiped the moisture of particle surface using the wet towel wrung out
Dry, it is the natural saturated dry surface of aggregate that aggregate internal void is aqueous, which to reach saturation and its surface is still dry,.Using water jet
Spray water again on recycled aggregate surface, the gap between recycled aggregate surface pore and aggregate can further water storage, when water storage reaches
When being utmostly saturation state, the water in interconnected pore can ooze out downwards under the collective effect of gravity and pore water tension
And water flow is converged into, the moment seeped under water saturation is water storage saturation state, and the percentage of the quality of quality of spraying water and aggregate is
Storage coefficient.
(2) by the measurement to construction refuse regenerated aggregate storage coefficient, the water storage performance of building waste can be specified, is
Sponge city selects construction refuse regenerated aggregate to provide reference, while can make full use of to construction refuse regenerated aggregate.
(3) aggregate storage coefficient test device of the invention can also be used for the measurement of conventional aggregate storage coefficient, and can be same
When measure aggregate storage coefficient and water absorption rate.
Detailed description of the invention
The present invention is described in further details in the following with reference to the drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of aggregate storage coefficient test device of the invention.
In figure: 1 water jet；2 tube for feed；201 sieves；3 water receivers.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
It will be appreciated that the following example is merely to illustrate the present invention, and it is not construed as limiting the scope of the invention.
With reference to Fig. 1, a kind of aggregate storage coefficient test device of the invention, the storage for test architecture garbage regeneration aggregate
Water coefficient, comprising: water jet 1, tube for feed 2 and water receiver 3；Wherein, the tube for feed 2 is placed in the upper end of the water receiver 3,
The bottom of the tube for feed 2 is open end, and the open end is provided with sieve 201；The water jet 1 is used for the tube for feed
Water spray in 2.
In above embodiments, for the storage coefficient of test architecture garbage regeneration aggregate, tube for feed 2 is for holding aggregate.
The aggregate water spray that water jet 1 is used to hold into tube for feed 2, makes aggregate reach water-saturated state, the sieve 201 in tube for feed 2 is used
In by the aggregate storing of water-saturated state in tube for feed 2, and by moisture extra in the aggregate of water-saturated state by sieve 201
Sieve pore is flow in water receiver 3.Water receiver 3 is used to store moisture extra in the aggregate of water-saturated state, and in observable tube for feed 2
Aggregate whether have water droplet drip or water column outflow.Aggregate storage coefficient test device structure of the invention is simple, low cost, easily
Operation, testing cost are low, can quickly detect the storage coefficient of aggregate.
The test method of aggregate storage coefficient test device of the invention to storage coefficient are as follows: aggregate is soaked in water
After for 24 hours, the water in aggregate surface and internal connection hole is all saturated, using the wet towel wrung out by the water of particle surface
Point gently wipe dry, it is the dry shape of natural saturation plane of aggregate that aggregate internal void is aqueous at this time, which reaches saturation and its surface is still dry,
State.Sprayed water again using water jet 1 in aggregate surface, the gap between aggregate surface hole and aggregate can further water storage, work as storage
When water reaches utmostly i.e. saturation state, water in interconnected pore can under the collective effect of gravity and pore water tension, to
Lower exudation simultaneously converges into water flow, and the moment seeped under water saturation is water storage saturation state, the quality and aggregate that water jet 1 is sprayed water again
Mass values be aggregate storage coefficient.
According to one embodiment of present invention, the screen size of the sieve 201 is 0.4~0.8mm.
In above embodiments, the screen size of sieve 201 is 0.4~0.8mm, and the partial size of construction refuse regenerated aggregate is greater than
The aperture of sieve pore, it is ensured that construction refuse regenerated aggregate will not be fallen in water receiver 3 from sieve pore, while energy building waste is again
Extra water energy is smoothly dripped from sieve pore in raw aggregate.
According to one embodiment of present invention, scale is provided on the inner wall of the tube for feed 2.
In above embodiments, the inner wall of tube for feed 2 is provided with scale from the bottom up, can be read directly construction refuse regenerated
The thickness of aggregate, it is convenient intuitive.
According to one embodiment of present invention, the material of the water receiver 3 is transparent material.
According to one embodiment of present invention, the transparent material is organic glass material.
In above embodiments, water receiver 3 is transparent organic glass material, convenient for intuitively having seen whether water from charge
Cylinder 2 drops to water receiver 3, has water drippage moment to stop spraying water immediately, to accurately determine the dosage that water jet 1 is sprayed water, guarantees
The accuracy of storage coefficient measurement.
According to one embodiment of present invention, the height of the tube for feed 2 is 25~35cm, and the diameter of tube for feed 2 is 25
~35cm.
In above embodiments, the height of tube for feed 2 is 25~35cm, diameter is 25~35cm, can satisfy building waste
The charge demand of recycled aggregate.
According to one embodiment of present invention, the height of the water receiver 3 is 25~35cm, and the diameter of water receiver 3 is 25
~35cm.
In above embodiments, the height of water receiver 3 is 25~35cm, diameter is 25~35cm, the specification phase with tube for feed 2
Matching makes the water energy overflowed after aggregate saturation in tube for feed 2 all fall to water receiver 3.
Aggregate storage coefficient test method of the invention, comprising the following steps:
(1) it is sampled by sampling method specified in " construction cobble, rubble " (GB/T 14685).The minimum of sample
Quantity of sampling quantity should meet the regulation of table 1.The quality required using quartering or the division of tripper method to table 1, be divided to two parts it is spare.
1 test sampling quantity of table
| Regenerated coarse aggregate maximum particle diameter (mm) | 9.5 | 19.0 | 31.5 | 60.0 |
| Minimum sampling amount (kg) | 20.0 | 30.0 | 40.0 | 40.0 |
By sample processing method specified in " construction cobble, rubble " (GB/T 14685) by sample divider pass to being slightly larger than
2 times of quantity as defined in table 2.
Table 2 tests required sample quantities
| Regenerated coarse aggregate maximum particle diameter (mm) | 9.5 | 19.0 | 31.5 | 60.0 |
| Minimum sample size (kg) | 4.0 | 5.0 | 6.0 | 6.0 |
(2) sample after division is placed in the drying box of (105 ± 5) DEG C and is dried to constant, after being cooled to room temperature, be divided into
Equal two parts are spare.
(3) every part of sample is impregnated in (15~25 DEG C) water, carefully washes away the dust for being attached to aggregate surface and clast powder,
Through multiple rinsed clean until water is limpid, must not scatter and disappear particles of aggregates in wash clean process.
(4) materials 1 part and place it in the container being filled with water, the water surface is made to be higher by specimen surface 5mm or so, for 24 hours after from water
Middle taking-up sample, and with the wet towel wrung out the moisture of particle surface gently wiped it is dry, saturation plane dry sample, immediately will examination
Sample is placed in tray, weighs the quality m of the dry recycled aggregate of saturation plane1, accurately to 0.1g.
(5) water jet is filled into water, weighs the gross mass m of water jet and water before spraying water2。
(6) the two sides water-wet of tube for feed inside and bottom sieve is moistened, the dry recycled aggregate of saturation plane is then put into Sheng
In barrel, the dry recycled aggregate of saturation plane is shakeout in tube for feed, and tube for feed is placed on water receiver.It is hand-held using push type
Water jet is sprayed water into tube for feed, water jet around tube for feed in being rotated clockwise, and using side intermediate behind first edge
Formula water spray, until tube for feed bottom has, water droplet drips or water column flows out, and stops water spray immediately, obtains maximum saturation aggregate, weigh spray
The gross mass m of water jet and water after water3。
(7) maximum saturation aggregate is placed in tray, is put into the baking oven of (105 ± 5) DEG C that drying to constant weight.It takes out shallow
Disk is placed in container with cover and is cooled to room temperature, obtains oven-dried aggregate, weighs oven-dried aggregate m4。
(8) storage coefficient calculates as the following formula (1), is accurate to 0.1%.
In formula:
Q --- storage coefficient (%)；
m2--- water jet and water gross mass (g) before spraying water；
m3--- water jet and water gross mass (g) after water spray；
m4--- the dries quantity (g) of recycled aggregate.
(9) water absorption rate calculates as the following formula (2), is accurate to 0.1%.
In formula:
W --- water absorption rate (%)；
m1--- the quality (g) of the dry aggregate of saturation plane；
m4--- the dries quantity (g) of recycled aggregate.
(10) parallel test carries out 2 times, and test result takes the arithmetic mean of instantaneous value tested twice, is accurate to 0.1%.
Using aggregate storage coefficient test device of the invention to the water storage system of the construction refuse regenerated aggregate of different size
Several and water absorption rate is tested, specific as follows:
Embodiment 1
Use aggregate storage coefficient test device to partial size for 5~10mm, with a thickness of the construction refuse regenerated aggregate of 5cm
Storage coefficient and water absorption rate are tested, comprising the following steps:
(1) 20kg is sampled by " construction cobble, rubble " (GB/T 14685), using quartering division to 8.010kg.
(2) sample after division is placed in 105 DEG C of drying box and is dried to constant, after being cooled to room temperature, be divided into equal
Two parts it is spare.
(3) every part of aggregate sample is immersed in 20 DEG C of water, carefully washes away the dust for being attached to aggregate surface and clast powder, passed through
Multiple rinsed clean is until water is limpid, and must not scatter and disappear particles of aggregates in wash clean process.
(4) materials 1 part and place it in the container being filled with water, the water surface is made to be higher by specimen surface 5mm or so, for 24 hours after from water
Middle taking-up sample, and with the wet towel wrung out the moisture of particle surface gently wiped it is dry, saturation plane dry sample, immediately will examination
Sample is placed in tray, weighs the surface drying quality m of the dry recycled aggregate of saturation plane1For 4177.0g.
(5) water jet is filled into water, weighs the gross mass m of water jet and water before spraying water2For 1523.6g.
(6) the two sides water-wet of tube for feed inside and bottom sieve is moistened, then sample is put into tube for feed, by sample
It is shakeout in tube for feed, and tube for feed is placed on water receiver.Water jet is held into the tube for feed using push type to spray water,
Until tube for feed bottom has, water droplet drips or water column outflow, stopping water spray obtaining maximum saturation aggregate, the water jet after weighing water spray
With the gross mass m of water3For 1270.0g.
(7) maximum saturation aggregate is placed in tray, is put into 105 DEG C of baking oven that drying to constant weight.Tray is taken out, is placed on
It is cooled to room temperature in container with cover, obtains oven-dried aggregate, weigh oven-dried aggregate m4For 3664.5g.
(8) water absorption rate and storage coefficient are calculated, the results are shown in Table 3.
3 partial size of table is the test result of 5~10mm construction refuse regenerated aggregate
| Dries quantity/g | Surface drying quality/g | Water storage quality/g | Storage coefficient/% | Water absorption rate/% |
| 3664.5 | 4177.0 | 253.6 | 6.9 | 14.0 |
Embodiment 2
Use aggregate storage coefficient test device to partial size for 10~20mm, with a thickness of the construction refuse regenerated aggregate of 5cm
Storage coefficient and water absorption rate tested, comprising the following steps:
(1) 30kg is sampled by " construction cobble, rubble " (GB/T 14685), using quartering division to 10.022kg.
(2) sample after division is placed in 100 DEG C of drying box and is dried to constant, after being cooled to room temperature, be divided into equal
Two parts it is spare.
(3) every part of aggregate sample is immersed in 15 DEG C of water, carefully washes away the dust for being attached to aggregate surface and clast powder, passed through
Multiple rinsed clean is until water is limpid, and must not scatter and disappear particles of aggregates in wash clean process.
(4) materials 1 part and place it in the container being filled with water, the water surface is made to be higher by specimen surface 5mm or so, for 24 hours after from water
Middle taking-up sample, and with the wet towel wrung out the moisture of particle surface gently wiped it is dry, saturation plane dry sample, immediately will examination
Sample is placed in tray, weighs the surface drying quality m of the dry recycled aggregate of saturation plane1For 4610.4g.
(5) water jet is filled into water, weighs the gross mass m of water jet and water before spraying water2For 1290.7g.
(6) the two sides water-wet of tube for feed inside and bottom sieve is moistened, then sample is put into tube for feed, by sample
It is shakeout in tube for feed, and tube for feed is placed on water receiver.Water jet is held into the tube for feed using push type to spray water,
Until tube for feed bottom has, water droplet drips or water column outflow, stopping water spray obtaining maximum saturation aggregate, the water jet after weighing water spray
With the gross mass m of water3For 1070.3g.
(7) maximum saturation aggregate is placed in tray, is put into 100 DEG C of baking oven that drying to constant weight.Tray is taken out, is placed on
It is cooled to room temperature in container with cover, obtains oven-dried aggregate, weigh oven-dried aggregate m4For 3964.0g.
(8) water absorption rate and storage coefficient are calculated, the results are shown in Table 4.
4 partial size of table is the test result of 10~20mm construction refuse regenerated aggregate
| Dries quantity/g | Surface drying quality/g | Water storage quality/g | Storage coefficient/% | Water absorption rate/% |
| 3964.0 | 4610.4 | 220.4 | 5.6 | 16.3 |
Embodiment 3
Use aggregate storage coefficient test device to partial size for 30~50mm, with a thickness of the construction refuse regenerated aggregate of 5cm
Storage coefficient and water absorption rate tested, comprising the following steps:
(1) 40kg is sampled by " construction cobble, rubble " (GB/T 14685), using quartering division to 12.035kg.
(2) sample after division is placed in 110 DEG C of drying box and is dried to constant, after being cooled to room temperature, be divided into equal
Two parts it is spare.
(3) every part of aggregate sample is immersed in 25 DEG C of water, carefully washes away the dust for being attached to aggregate surface and clast powder, passed through
Multiple rinsed clean is until water is limpid, and must not scatter and disappear particles of aggregates in wash clean process.
(4) materials 1 part and place it in the container being filled with water, the water surface is made to be higher by specimen surface 5mm or so, for 24 hours after from water
Middle taking-up sample, and with the wet towel wrung out the moisture of particle surface gently wiped it is dry, saturation plane dry sample, immediately will examination
Sample is placed in tray, weighs the surface drying quality m of the dry recycled aggregate of saturation plane1For 4399.5g.
(5) water jet is filled into water, weighs the gross mass m of water jet and water before spraying water2For 1628.0g.
(6) the two sides water-wet of tube for feed inside and bottom sieve is moistened, then sample is put into tube for feed, by sample
It is shakeout in tube for feed, and tube for feed is placed on water receiver.Water jet is held into the tube for feed using push type to spray water,
Until tube for feed bottom has, water droplet drips or water column outflow, stopping water spray obtaining maximum saturation aggregate, the water jet after weighing water spray
With the gross mass m of water3For 1539.0g.
(7) maximum saturation aggregate is placed in tray, is put into 110 DEG C of baking oven that drying to constant weight.Tray is taken out, is placed on
It is cooled to room temperature in container with cover, obtains oven-dried aggregate, weigh oven-dried aggregate m4For 4000.0g.
(8) water absorption rate and storage coefficient are calculated, the results are shown in Table 5.
5 partial size of table is the test result of 30~50mm construction refuse regenerated aggregate
| Dries quantity/g | Surface drying quality/g | Water storage quality/g | Storage coefficient/% | Water absorption rate/% |
| 4000.0 | 4399.5 | 89.0 | 2.2 | 10.0 |
In above embodiments, when aggregate of the water jet into tube for feed is sprayed water, water jet is rotated clockwise around tube for feed,
And successively draw a circle sprinkling along pointer along tube for feed ecto-entad, it repeats to spray repeatedly, is sprayed at water uniformly on aggregate.It dries
It is dry to be dried using air dry oven；It weighs and is weighed using electronic balance, weigh 20kg, sensibility reciprocal 0.1g；5kg is weighed,
Sensibility reciprocal 0.1g；Water jet be push type hold water jet, long nozzle type, can hand supercharging, capacity 2L.It is also used during test
The tools such as spades, enamel tray, towel (pure cotton system, clean), the cylinder that volume is 10L.
The test of aggregate storage coefficient test device of the invention for the storage coefficient of test architecture garbage regeneration aggregate
Principle are as follows: the storage coefficient of construction refuse regenerated aggregate refers under aggregate saturated dry surface, the building waste of unit mass
After recycled aggregate water storage saturation, the ratio of the quality of the quality and recycled aggregate of water.The natural saturated dry surface that sieve has been taken
The recycled aggregate of (its internal void of aggregate is aqueous reach saturation and its dry tack free) is sprayed water using watering can, until saturation
Afterwards, the percentage of test water spray quality and recycled aggregate quality is storage coefficient.
By the measurement to construction refuse regenerated aggregate storage coefficient, the water storage performance of building waste can be specified, for sea
Continuous city selects construction refuse regenerated aggregate to provide reference, while can make full use of to construction refuse regenerated aggregate, this hair
Bright aggregate storage coefficient test device can also be used for the measurement of conventional aggregate storage coefficient, and can measure the water storage of aggregate simultaneously
Coefficient and water absorption rate.
Although the present invention is described in detail with a general description of the specific embodiments in this specification,
But on the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.
Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed model
It encloses.
Claims (9)
1. a kind of aggregate storage coefficient test device, the storage coefficient for test architecture garbage regeneration aggregate, which is characterized in that
It include: water jet (1), tube for feed (2) and water receiver (3)；Wherein, the tube for feed (2) is placed in the upper of the water receiver (3)
The bottom at end, the tube for feed (2) is open end, and the open end is provided with sieve (201)；The water jet (1) be used for
Water spray in the tube for feed (2).
2. aggregate storage coefficient test device according to claim 1, which is characterized in that the sieve pore of the sieve (201)
Having a size of 0.4~0.8mm.
3. aggregate storage coefficient test device according to claim 1, which is characterized in that the inner wall of the tube for feed (2)
On be provided with scale.
4. aggregate storage coefficient test device according to claim 1, which is characterized in that the material of the water receiver (3)
For transparent material.
5. aggregate storage coefficient test device according to claim 4, which is characterized in that the transparent material is organic glass
Glass material.
6. aggregate storage coefficient test device according to claim 1, which is characterized in that the height of the tube for feed (2)
For 25~35cm, the diameter of tube for feed (2) is 25~35cm；The height of the water receiver (3) is 25~35cm, water receiver (3)
Diameter be 25~35cm.
7. a kind of test method of aggregate storage coefficient, which comprises the following steps:
Step 1, aggregate is taken, drying to constant weight by the aggregate, is cooled to room temperature, and cleans, and removes the dust of aggregate surface and broken
It considers powder to be worth doing, obtains pretreatment aggregate；
Step 2, the pretreatment aggregate is impregnated for 24 hours, takes out aggregate, dries the moisture of aggregate surface, it is dry to obtain saturation plane
Aggregate weighs the quality m of the dry aggregate of saturation plane1；
Step 3, the gross mass m of water jet and water before weighing water spray2；
Step 4, the two sides of the inner wall of tube for feed and sieve is moistened with water, the dry aggregate of the saturation plane is placed in the charge
In cylinder, then tube for feed is placed in the upper end of water receiver, sprayed water using water jet into the tube for feed, until tube for feed bottom
Portion has water droplet to drip or water column outflow, stopping water spray obtaining maximum saturation aggregate, the gross mass of water jet and water after weighing water spray
m3；
Step 5, by the maximum saturation aggregate, drying to constant weight, is cooled to room temperature, obtains oven-dried aggregate, weighs the matter of oven-dried aggregate
Measure m4, pass through formulaCalculate aggregate storage coefficient Q.
8. the test method of aggregate storage coefficient according to claim 7, which is characterized in that the water absorption rate w of the aggregate
Pass through formulaIt calculates.
9. the test method of aggregate storage coefficient according to claim 7, which is characterized in that in step 2, the immersion
Temperature is 15~25 DEG C.
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| CN113758827A (en) * | 2021-09-09 | 2021-12-07 | 中水北方勘测设计研究有限责任公司 | Integrated device and method for determining apparent density of aggregate |
| CN114018751A (en) * | 2021-10-29 | 2022-02-08 | 上海建工集团股份有限公司 | Device and method for continuously measuring saturated surface dry state of pre-wet aggregate |
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