CN110018080A - The device and method of recycled aggregate packing density under a kind of measurement vibration condition - Google Patents

The device and method of recycled aggregate packing density under a kind of measurement vibration condition Download PDF

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Publication number
CN110018080A
CN110018080A CN201910225405.8A CN201910225405A CN110018080A CN 110018080 A CN110018080 A CN 110018080A CN 201910225405 A CN201910225405 A CN 201910225405A CN 110018080 A CN110018080 A CN 110018080A
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CN
China
Prior art keywords
recycled aggregate
material box
shake table
packing density
fixed plate
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Pending
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CN201910225405.8A
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Chinese (zh)
Inventor
李如燕
郭鹏
李�根
王伟芳
张云浩
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Priority to CN201910225405.8A priority Critical patent/CN110018080A/en
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Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a kind of device and methods of recycled aggregate packing density under measurement vibration condition, belong to density measuring equipment technical field.The present invention includes measuring cup, shake table, fixed plate, material box and control cabinet, the fixed plate is mounted on above vibration table, it is to be fixedly connected between the fixed plate and shake table, the material box is mounted in fixed plate, to be fixedly connected between the material box and fixed plate, the material box side is equipped with discharge port, and the other side is equipped with graduated scale, the control cabinet is mounted on shake table side, and the control cabinet is equipped with control panel.Thus the present invention can reflect that the different-grain diameter of recycled aggregate matches the intensity and anti-compression properties of lower regeneration concrete with the packing density of recycled aggregate under rapid survey vibration condition.

Description

The device and method of recycled aggregate packing density under a kind of measurement vibration condition
Technical field
The present invention relates to density measuring equipment technical fields, and in particular to recycled aggregate is accumulated under a kind of measurement vibration condition The device and method of compactness.
Background technique
Recycled aggregate technology be develop green concrete, realize building, resource, the major measure of environment sustainable development it One, the concern for the persons that just increasingly causing concrete research, and increasingly by the attention of engineering circles.
The construction industry in China has obtained swift and violent development in recent years, and building renewal speed is constantly accelerated, large quantities of waste and old coagulations Native buildings or structures object is removed, and produces huge number of waste and old concrete, while in new construction, is also resulted in big The discarded concrete of amount.China's building waste yield is huge, and about 3,500,000,000 tons/year, wherein 1,500,000,000 tons of rubbish are teared down and built, engineering spoir 2000000000 tons, but resource rate is less than 5%, far below the 70%-98% of developed countries and regions.As the high speed of Development of China's Urbanization is sent out Exhibition, building waste yield dramatically increases, and the processing modes such as air storage, simple landfill cause the pollution and resource of environment Huge waste.On the other hand, the yield of engineering concrete coarse aggregate is also very huge, causes excessively disappearing for natural resources Consumption and environmental disruption.From the angle of environmental protection and Sustainable Construction Industry, it is quite necessary to discard coagulation to these Soil is subject to high efficiente callback utilization.Discarded concrete is crushed, processed, is classified into recycled aggregate, is used to part replacement or complete Portion replaces natural aggregate to prepare new concrete, is known as regeneration concrete.Because it has apparent society, economy and Environmental Effect Benefit, so meeting the requirement of construction industry Green Sustainable.But under same match ratio the compression strength of regeneration concrete and Anti-compression properties decrease compared with normal concrete, general 5%-24%.
In regeneration concrete preparation process, the prior art mainly determines Regenerated Bone by experience or many and diverse experiment Material each partial size proportion, however Conventional wisdom method be limited in that its be according to natural aggregate performance be used for a long time under one A fuzzy ratio, the properties of natural aggregate are better than recycled aggregate, equally treat will cause regeneration concrete performance it is poor It is larger with ambiguity.And various regions building waste performance is different, causes usually reach expected purpose.Existing bulk density Being limited in that for measurement, in actual production recycled aggregate, needs to keep material more closely knit to the certain vibration condition of material, It is measured with bulk density, then will not obtain accurate material accumulation compactness, data inaccuracy, and single factors experiment is numerous It is multiple, cause research regeneration concrete economy and time cost higher.In order to realize the effective use of recycled aggregate, it is mixed to improve regeneration Coagulate the intensity and anti-compression properties of soil, it is necessary to study a kind of dress for piling up compactness for fast and accurately measuring recycled aggregate It sets, for reflecting that the different-grain diameter of recycled aggregate matches the intensity of lower regeneration concrete.
Summary of the invention
The purpose of the present invention is to provide a kind of devices of recycled aggregate packing density under measurement vibration condition, to solve The problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme: recycled aggregate is accumulated under a kind of measurement vibration condition The device of compactness, including shake table 3, fixed plate 7, material box 5 and control cabinet 1, it is electric between the control cabinet 1 and shake table 3 Property be connected, the control cabinet 1 is equipped with control panel 2, and the fixed plate 7 is fixed on the surface of shake table 3, the material box 5 are fixed in fixed plate 7, and material box 5 is transparent cabinet, and top is opening, and 5 side of material box is equipped with discharge port 6, the other side Surface be provided with the graduated scale 4 of vertical direction.
Preferably, the fixed plate 7 and material box 5 are prepared using same material, are fixed between the two by glue sticking.
Preferably, to be bolted between the fixed plate 7 and shake table 3, it is equipped with quakeproof rubber pad between the two.
Preferably, the control cabinet 1 and 3 pedestal of shake table are equipped with anticreeper.
Preferably, the discharge port 6 is set as retractable baffle.
When measuring recycled aggregate packing density under vibration condition using above-mentioned apparatus, first measuring total volume is V0Each grain Recycled aggregate to be measured under diameter successively pours into material box and is stirred for uniformly, adjusting vibration frequency and time of vibration, starting vibration Platform, recycled aggregate starts accumulation until vibration terminates in material box, and the recycled aggregate height after accumulation is read on graduated scale H calculates compactness Y=V of recycled aggregate to be measured0/(S0× h), S0For the floor space of material box, electricity is closed after being measured Source is cleared out from discharge port by recycled aggregate.
Beneficial effects of the present invention:
The present invention realizes the proportion for quickly determining each partial size of recycled aggregate under vibration condition, and it is fuzzy can to take into account recycled aggregate Property, randomness, it is extensive, multiple dimensioned prepare regeneration concrete using recycled aggregate, waste utilization protects environment, reduce at This, and produce the regeneration concrete of excellent properties.Rapidly and accurately compared to Conventional wisdom and bulk density mensuration measurement result, Measurement need not be gone to review the quality of aggregate, result is read conveniently, without excessive calculating, greatly improve test efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Each label in figure: 1, control cabinet;2, control panel;3, shake table;4, graduated scale;5, material box;6, discharge port; 7, fixed plate.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, and described embodiment is only this Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Embodiment 1: as shown in Figure 1, a kind of device for measuring recycled aggregate packing density under vibration condition, including vibration Platform 3, fixed plate 7, material box 5 and control cabinet 1 are electrical connected between the control cabinet 1 and shake table 3, set on the control cabinet 1 There is control panel 2, the fixed plate 7 is fixed on the surface of shake table 3, and the material box 5 is fixed in fixed plate 7, material Box 5 is transparent cabinet, and top is opening, and 5 side of material box is equipped with discharge port 6, and the surface of the other side is provided with vertical direction Graduated scale 4, wherein discharge port 6 can may be set to be front openings to separate mouth in the side surface upper part of material box 5, But it needs to be arranged openable and closable baffle and opening cooperates, not fallen when recycled aggregate vibration, while after the completion of facilitating test The cleaning of recycled aggregate.
Wherein to be bolted between fixed plate 7 and shake table 3, and it is equipped with quakeproof rubber pad between the two, fixed plate 7 is set It is set effective and alleviates vibration, so that material box 5 is more stable, in order to facilitate the connection between fixed plate 7 and material box 5, the two It is prepared using identical material, such as can choose acrylic material, it is fixed by glue sticking, in addition to above-mentioned setting shape Formula also can be used and such as open up groove in fixed plate 7, by material box 5 be stuck in it is therein be fixedly connected with mode etc., as long as can be effective Guarantee material box 5 vibration when be in steady state.
In order to further guarantee safety and measurement accuracy, leakproof Denso is equipped in control cabinet 1 and 3 pedestal of shake table It sets.
The concrete mode of recycled aggregate packing density measurement is carried out using the present apparatus are as follows: measuring total volume using measuring cup is V0Each partial size under recycled aggregate to be measured, successively pour into material box 5, stir evenly, the floor space of material box 5 is S0, connect The power supply of shake table 3 is adjusted to measured frequency and time, starts shake table 3 in control panel 2 and start to vibrate, at this moment material box 5 Middle recycled aggregate starts to accumulate, until vibration terminates, height h is read on graduated scale 4, according to compactness Y=V0/(S0× h), The packing density of surveyed recycled aggregate under vibrating conditions is quickly calculated, power supply is closed, it is from discharge port 6 that recycled aggregate is clear Out, it prepares for measurement next time.
Embodiment 2: device rest part is same as Example 1 in the present embodiment, and wherein control cabinet 1, shake table 3 are Shanghai The Six Degrees vibration mechine touch screen money (ZD/LX-XTP) of Lu Xuan instrument and equipment factory production.The floor space of material box 5 is 525cm2, high 15cm.Using the present apparatus to several different aggregates into packing density test, detailed process and result are such as Under:
Experimental group:
(1) 5L standard grading natural aggregate is measured using measuring cup, pours into material box, connect shake table power supply, on the control panel Vibration frequency 24Hz, time of vibration 30s are adjusted, starts shake table, gently smoothes out upper surface wait vibrate to finish, read on scale Height 8.15cm, by formula Y=V0/(S0× h), learn the packing density 1.17 under natural aggregate vibration condition.
(2) 5L standard grading jaw crushing recycled aggregate is measured using measuring cup, pours into material box, connect shake table power supply, Vibration frequency 24Hz, time of vibration 30s are adjusted on the control panel, are started shake table, are gently smoothed out upper surface wait vibrate to finish, Height 8.45cm is read on scale, by formula Y=V0/(S0× h), learn the packing density under natural aggregate vibration condition 1.13。
(3) 5L standard grading reaction type breaking, regenerating aggregate is measured using measuring cup, pours into material box, connect shake table electricity Source adjusts vibration frequency 24Hz, time of vibration 30s on the control panel, starts shake table, gently smoothes out upper table wait vibrate to finish Height 8.30cm is read, by formula Y=V in face on scale0/(S0× h), learn that the accumulation under natural aggregate vibration condition is closely knit Degree 1.15.
Contrast groups:
(1) 5L standard grading natural aggregate is measured using measuring cup and measure its bulk density, slowly poured into from sandstone funnel, make it certainly By falling below funnel in graduated cylinder, aggregate upper surface in graduated cylinder is gently smoothed out after being all finished down, measuring its volume is 4.6L, by Y= V0/ V1, learn packing density 1.09.
(2) 5L standard grading jaw crushing recycled aggregate is measured using measuring cup measure its bulk density, it is slow from sandstone funnel It is slow to pour into, it is freely dropped into it below funnel in graduated cylinder, aggregate upper surface in graduated cylinder is gently smoothed out after being all finished down, measures its body Product is 4.8L, by Y=V0/ V1, learn packing density 1.04.
(3) 5L standard grading reaction type breaking, regenerating aggregate is measured using measuring cup and measure its bulk density, from sandstone funnel It slowly pours into, is freely dropped into it below funnel in graduated cylinder, aggregate upper surface in graduated cylinder is gently smoothed out after being all finished down, measures it Volume is 4.7L, by Y=V0/ V1, learn packing density 1.06.
Specific testing result is as shown in table 1:
The test result of table 1 experimental group and contrast groups
According to table 1 as can be seen that when being measured using the device of the invention and method to recycled aggregate packing density, simulation It when actual production recycled aggregate, needs to keep material more closely knit to the certain vibration condition of material, therefore close relative to accumulating Mensuration is spent, obtained material accumulation compactness is more accurate, it is not necessary to which the quality for removing measurement recycled aggregate effectively increases regeneration The different-grain diameter of aggregate matches the intensity of lower regeneration concrete, quickly determines each partial size proportion of recycled aggregate.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (6)

1. the device of recycled aggregate packing density under a kind of measurement vibration condition, it is characterised in that: including shake table (3), admittedly Fixed board (7), material box (5) and control cabinet (1) are electrical connected between the control cabinet (1) and shake table (3), the control cabinet (1) control panel (2) are equipped with, the fixed plate (7) is fixed on the surface of shake table (3), and the material box (5) is fixed on In fixed plate (7), material box (5) is transparent cabinet, and top is opening, and material box (5) side is equipped with discharge port (6), another The surface of side is provided with the graduated scale (4) of vertical direction.
2. the device of recycled aggregate packing density under measurement vibration condition according to claim 1, it is characterised in that: institute It states fixed plate (7) and material box (5) to prepare using same material, be fixed between the two by glue sticking.
3. the device of recycled aggregate packing density, feature exist under measurement vibration condition according to claim 1 or 2 In: to be bolted between the fixed plate (7) and shake table (3), it is equipped with quakeproof rubber pad between the two.
4. the device of recycled aggregate packing density under measurement vibration condition according to claim 1, it is characterised in that: institute It states control cabinet (1) and shake table (3) pedestal is equipped with anticreeper.
5. the device of recycled aggregate packing density under measurement vibration condition according to claim 1, it is characterised in that: institute It states discharge port (6) and is set as retractable baffle.
6. a kind of method of recycled aggregate packing density under measurement vibration condition, it is characterised in that: measured using measuring cup overall Product is V0Each partial size under recycled aggregate to be measured, successively pour into material box (5), stir evenly, connect shake table (3) electricity Source adjusts its vibration frequency and time of vibration, and starting shake table (3) starts to vibrate, and recycled aggregate starts to accumulate in material box (5) Until vibration terminates, the recycled aggregate height h after accumulation is read on graduated scale (4), calculates the close of recycled aggregate to be measured Solidity Y=V0/(S0× h), S0For the floor space of material box (5), power supply is closed after being measured, from discharge port (6) by Regenerated Bone Material clears out.
CN201910225405.8A 2019-03-25 2019-03-25 The device and method of recycled aggregate packing density under a kind of measurement vibration condition Pending CN110018080A (en)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
CN200989874Y (en) * 2006-06-20 2007-12-12 长春吉大科学仪器设备有限公司 Vibrating grain volume-weight apparatus
KR101009927B1 (en) * 2009-05-12 2011-01-20 한국기계연구원 A measure equipment for flow rate and apparent density of metal powder and method for measuring flow rate and apparent desity of metal powder
CN201803919U (en) * 2010-09-17 2011-04-20 长安大学 Coarse aggregate bulk density tester for asphalt
CN203551429U (en) * 2013-11-15 2014-04-16 山东辛化硅胶有限公司 Stacking density measuring instrument with vibration rod capable of rotating peripherally
CN203629991U (en) * 2013-10-29 2014-06-04 安徽万邦医药科技有限公司 Novel tap density measurement instrument
CN105699250A (en) * 2016-04-06 2016-06-22 深圳大学 Vibrating method and system for measuring tap density of powder
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Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
CN200989874Y (en) * 2006-06-20 2007-12-12 长春吉大科学仪器设备有限公司 Vibrating grain volume-weight apparatus
KR101009927B1 (en) * 2009-05-12 2011-01-20 한국기계연구원 A measure equipment for flow rate and apparent density of metal powder and method for measuring flow rate and apparent desity of metal powder
CN201803919U (en) * 2010-09-17 2011-04-20 长安大学 Coarse aggregate bulk density tester for asphalt
CN203629991U (en) * 2013-10-29 2014-06-04 安徽万邦医药科技有限公司 Novel tap density measurement instrument
CN203551429U (en) * 2013-11-15 2014-04-16 山东辛化硅胶有限公司 Stacking density measuring instrument with vibration rod capable of rotating peripherally
CN105699250A (en) * 2016-04-06 2016-06-22 深圳大学 Vibrating method and system for measuring tap density of powder
CN206208692U (en) * 2016-12-05 2017-05-31 广东龙马化学有限公司 A kind of experimental facilities for powder body material

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陈香波: "颗粒膨润土堆积性质及压实性质研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 *

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Application publication date: 20190716