CN101692083B - Quick measuring device for concrete slump and usage method - Google Patents

Quick measuring device for concrete slump and usage method Download PDF

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Publication number
CN101692083B
CN101692083B CN 200910235543 CN200910235543A CN101692083B CN 101692083 B CN101692083 B CN 101692083B CN 200910235543 CN200910235543 CN 200910235543 CN 200910235543 A CN200910235543 A CN 200910235543A CN 101692083 B CN101692083 B CN 101692083B
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China
Prior art keywords
slump
moving cylinder
monumented point
concrete
concrete slurry
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CN 200910235543
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CN101692083A (en
Inventor
韩斌
吴爱祥
王洪江
王贻明
王少勇
姚高辉
周勃
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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Abstract

The invention discloses a quick measuring device for concrete slump and a usage method, and belongs to the field of concrete preparation. The device consists of a circular fixed base, a guide rod, a guide ring, a fixed seat handle, a positioning pile, a mobile drum, a mobile drum pulling rod, a mobile drum handle, a slump upper limit marking point, a slump lower limit marking point and a mobile drum pulling rod marking point. The usage method comprises the following steps: marking a corresponding relation between the actual slump of concrete slurry and the slump measured by the device on the guide rod of the slump quick measuring device according to the result marking the slump quick measuring device by a standard slump drum to be used as a metering basis of the slump quick measuring device; and inserting the slump quick measuring device into the concrete slurry to be measured, filling the concrete slurry into the mobile drum, then hoisting the device, troweling the redundant concrete slurry on the surface of the mobile drum, and hoisting the mobile drum so as to measure the slump of the concrete slurry to be measured. The device has a small volume, and the measuring method is simple and convenient and has short measuring period.

Description

A kind of quick measuring device for concrete slump and using method
Technical field
The invention belongs to the concreting field, can be applicable to the wet shotcreting slump Fast Measurement in underground mine tunnel, road and rail traffic tunnel, water conservancy and hydropower tunnel, also can be used for the Fast Measurement of general concrete mixing plant concrete slump.
Background technology
Workability refers to that concrete mix is easy to constructing operation, and obtains uniformly densely concrete character.The workability of fresh concrete has determined that concrete whether can normal construction, to satisfy the performance requirement after the sclerosis.The slump is to weigh an important indicator of concrete slurry workability, and this index has reflected whether concrete is easy to constructing operation and performance uniformly densely, is exactly normally carrying out of guaranteeing to construct specifically.The wet shotcreting technique of applying take mine working, road and rail traffic tunnel is as example, if the wet shotcreting slip slump is excessive, show then that the concrete slurry flowability is excessive, cohesiveness and water-retaining property be very poor, in the concrete spraying process, can produce excessive bounce-back, the accelerating chemicals consumption strengthens, and the intensity of institute's sprayed concrete also can descend; If the wet shotcreting slip slump is too small, show that the concrete slurry flowability is too small, wet shotcreting equipment is difficult to slip is ejected in spray gun, the faults such as plugging occur easily.Therefore, in the wet shotcreting construction in underground mine tunnel, road and rail traffic tunnel, water conservancy and hydropower tunnel, perhaps general concrete mixing plant prepares in the slip process, all will measure the concrete slump, to control concrete quality, guarantee concrete plasticizing capacity and pumpability energy.
The standard method of slump test is as follows: make a conically shaped with a tinned sheet iron, back cut diameter 100mm, end mouth diameter 200mm, high 300mm, cylinder is placed on the iron plate, divide the concrete that mixes and stirs three pourings to enter, put at every turn and all use iron staff (diameter 15mm after a Senior Three/one (being 100mm) puts at every turn, long 500mm) makes 25 times firm by ramming, concrete is equal with nozzle, after mentioning the cylinder that collapses, measure immediately cylinder high with collapse after concrete try difference in height between the body peak, be the slump of this mix.
On-the-spot in the concrete preparation, adopt standard method to measure the slump, have following disadvantage: (1) this kind method is measured the slump, needs two people to assist to finish; (2) this kind method test process is complicated, and test period is long; (3) in the method test process, need many aids.General concrete mixing plant often only arranges a concrete malaxerman, and the workability that the frequent employing standard method mensuration slump of while concrete mixing plant is controlled concrete slurry also is extremely unpractical.In the production run, the water yield, water cement ratio, sand coarse aggregate ratio, cement type, aggregate condition, time and each factor such as temperature, additive all change, these factors all can affect concrete workability, therefore, in the process of preparation concrete slurry, all be on the basis of results of regular determination concrete slump, rely on operative employee's experience to prepare concrete slurry, the different operating worker is owing to different individual differences, and the concrete slurry slump difference of preparation is very large.
Summary of the invention
The present invention be directed in the concrete slurry preparation process, the device of a kind of simple measuring concrete slurry slump of design, this device can be realized the purpose of the Fast Measurement slump.
A kind of quick measuring device for concrete slump, by circular firm banking, guide pole, guide ring, the holder handle, nose pile, moving cylinder, the moving cylinder pull bar, the moving cylinder handle, slump upper limit monumented point, slump lower limit monumented point, moving cylinder pull bar monumented point forms, wherein a nose pile is respectively welded in circular firm banking both sides, circular firm banking side vertical base welds a guide pole, its terminal welding one handle, moving cylinder is a bottomless barrel-shaped structure, moving cylinder one side is respectively welded a guide ring in two ends up and down, and a moving cylinder pull bar, the terminal welding of moving cylinder pull bar one moving cylinder handle.
Calibrate the bound monumented point (be on the slump under monumented point and the slump monumented point) of the desired concrete slurry slump at the guide pole of slump rapid determination device holder, simultaneously do a monumented point at the moving cylinder pull bar, according on moving cylinder pull bar monumented point and the holder guide pole the corresponding relation between the upper and lower monumented point of the slump of demarcating, as the payment foundation of this slump rapid determination device;
The using method of concrete slurry slump rapid determination device is as follows:
(1) moving cylinder is positioned on the circular firm banking, holding safety barrel handle on the other hand afterwards, another holds the moving cylinder handle, moving cylinder is inserted in the concrete slurry, after filling moving cylinder, mention this determinator, and strike off with the concrete slurry of scraper with mobile nozzle;
(2) one hold the handle of circular firm banking, another portable moving cylinder handle, and the Control Measures for Concrete Slump in the moving cylinder then aligns the moving cylinder lower edge with concrete peak on the circular firm banking;
(3) observe the position at moving cylinder pull bar monumented point place, if moving cylinder pull bar monumented point on the holder guide pole under the slump of demarcating monumented point below, illustrate that then the prepared concrete slurry slump is excessive; If moving cylinder pull bar monumented point on the holder guide pole between the upper and lower monumented point of the slump of demarcating, illustrate that then the prepared concrete slurry slump is suitable; If moving cylinder pull bar monumented point demarcate on the holder guide pole monumented point on the slump above, illustrate that then the prepared concrete slurry slump is too small;
(4) simultaneously according to the corresponding position of monumented point on moving cylinder pull bar monumented point and the holder guide pole, the slump value that can read prepared concrete slurry.
The different manifestations of this concrete slurry slump rapid determination device and standard slump determination test device following several aspect:
(1) concrete slurry slump rapid determination device only needs a people just can easily finish, and the slump determinator of standard must two people be assisted to finish;
(2) it is short that concrete slurry slump rapid determination device is measured the slump cycle, just can finish the mensuration of the slump within second at 20-30, the slump determinator of standard begins to finish (comprising cleaning) to measuring all from preparation work, generally needs 5-10 above minute;
(3) concrete slurry slump rapid determination device only needs a scraper to make aid in the mensuration process, the slump determinator of standard is in the mensuration process, except the bucket that collapses, also need a surface plate, one to contain instrument, a rod, a scraper of concrete slurry, and one ruler etc.;
(4) slump that concrete slurry slump rapid determination device can not the Accurate Measurement concrete slurry, but can determine the approximate range of the concrete slurry slump, this precision can satisfy in the production run fully to the General Requirements of concrete slump, and the concrete slump determinator of standard can the concrete slump of Accurate Determining.
The invention has the advantages that:
(1) only need a people just can finish the mensuration of the concrete slurry slump;
(2) this device volume is little, and assay method is simple;
(3) this device can be within 30 seconds the slump of Fast Measurement concrete slurry, measuring period is short;
(4) this device can be by the Fast Measurement to the concrete slurry slump, to regulate each material volume of concrete slurry, the prepared concrete slurry slump is controlled within the scope of design, avoided only relying on the operative employee personal experience to judge the error that the concrete slurry slump causes, overcome again employing standard slump device and used in process of production existing shortcoming;
This device is adapted at not needing strictly to control under the prerequisite of the concrete slurry slump, the Fast Measurement concrete slurry slump, can satisfy fully in the wet shotcreting Pulp preparation process in underground mine working, road and rail traffic tunnel, water conservancy and hydropower tunnel the accuracy requirement of slump control, also can satisfy the accuracy requirement of the concrete slurry slump control of concrete mixing plant under the general condition.
Description of drawings
Fig. 1 is slump rapid determination device front elevation (A-A section)
Fig. 2 is slump rapid determination device side view (C-C section)
Fig. 3 is slump rapid determination device vertical view
Among the figure: 1---the moving cylinder handle; 2---the holder handle; 3---the moving cylinder pull bar; 4---slump upper limit monumented point; 5---slump lower limit monumented point; 6---moving cylinder pull bar monumented point; 7---guide pole; 8---moving cylinder; 9---nose pile; 10---circular firm banking; 11---guide ring.
Embodiment
The processing request of concrete slurry slump rapid determination device is as follows:
(1) concrete slurry slump rapid determination device comprises the associated components such as circular firm banking, moving cylinder, circular firm banking diameter is consistent with the moving cylinder external diameter, be 110mm, the nose pile of a high 40mm is respectively welded in circular firm banking both sides, to guarantee that moving cylinder accurately is placed on the circular firm banking, in measuring process, do not break away, be offset, see Fig. 1, Fig. 2;
(2) circular firm banking side vertical base welds the guide pole of a φ 10mm, the long 392mm of guide pole, and its terminal welding one L-type handle is seen Fig. 1, Fig. 2, Fig. 3;
(3) processing one internal diameter φ 100mm, external diameter 110mm, the cylinder of high 150mm (being called moving cylinder), moving cylinder one side is respectively welded a guide ring in two ends up and down, by these two guide rings, moving cylinder and circular firm banking guide pole is linked together, weld simultaneously the pull bar of a φ 10mm at the moving cylinder lateral wall, the long 385mm of pull bar, the terminal welding of pull bar one L-type handle is seen Fig. 1, Fig. 2, Fig. 3;
(4) slump value of measuring simultaneously the different mixture ratio concrete slurry with slump cone and this slump rapid determination device of standard respectively, so that slump rapid determination device is demarcated, do a gauge point at the pull bar of moving cylinder, guide pole at slump rapid determination device calibrates on the slump simultaneously, the lower limit monumented point, on, the corresponding slump value of lower limit monumented point, on the desired slump of concrete batching slip, lower limit requires corresponding (such as the common wet-spraying machine of mine use, the slump of General Requirements is 120-200mm), and on calibrating in the Quick Measurement slump cone by the standard slump cone, the physical location of lower limit monumented point.And mark out concrete slump and be respectively 20mm, 40mm, 60mm, until during 300mm on guide pole corresponding monumented point.
The using method of concrete slurry slump rapid determination device is as follows:
(1) moving cylinder is positioned on the circular firm banking, holding safety barrel handle on the other hand afterwards, another holds the moving cylinder handle, moving cylinder is inserted in the concrete slurry, after filling moving cylinder, mention this determinator, and strike off with the concrete slurry of scraper with mobile nozzle;
(2) one hold the handle of circular firm banking, another portable moving cylinder handle, and the Control Measures for Concrete Slump in the moving cylinder then aligns the moving cylinder lower edge with concrete peak on the circular firm banking;
(3) position at observation moving cylinder pull bar monumented point place is if moving cylinder pull bar monumented point below slump lower limit monumented point, illustrates then that the prepared concrete slurry slump is excessive; If moving cylinder pull bar monumented point between slump upper and lower limit monumented point, illustrates then that the prepared concrete slurry slump is suitable; If moving cylinder pull bar monumented point above slump upper limit monumented point, illustrates then that the prepared concrete slurry slump is too small;
(4) simultaneously according to the corresponding position of monumented point on moving cylinder pull bar monumented point and the guide pole, the slump value that can read prepared concrete slurry.

Claims (2)

1. quick measuring device for concrete slump, it is characterized in that: determinator is comprised of moving cylinder handle (1), holder handle (2), moving cylinder pull bar (3), slump upper limit monumented point (4), slump lower limit monumented point (5), moving cylinder pull bar monumented point (6), guide pole (7), moving cylinder (8), nose pile (9), circular firm banking (10), guide ring (11); Wherein a nose pile is respectively welded in circular firm banking both sides, weld a guide pole at circular firm banking side perpendicular to base, the terminal welding of guide pole one holder handle, moving cylinder is a bottomless barrel-shaped structure, moving cylinder one side is respectively welded a guide ring in two ends up and down, by these two guide rings, the guide pole of moving cylinder and circular firm banking is linked together, at moving cylinder pull bar of the same side of moving cylinder welding; Calibrate the bound monumented point of the desired concrete slurry slump at the guide pole of the circular firm banking of slump rapid determination device; It is monumented point under monumented point and the slump on the slump, simultaneously do a monumented point at the moving cylinder pull bar, according on moving cylinder pull bar monumented point and the holder guide pole the corresponding relation between the upper and lower monumented point of the slump of demarcating, as the payment foundation of this slump rapid determination device.
2. a kind of quick measuring device for concrete slump as claimed in claim 1 is characterized in that the using method of concrete slurry slump rapid determination device is as follows:
(1) moving cylinder is positioned on the circular firm banking, holding reservation handle on the other hand afterwards, another holds the moving cylinder handle, moving cylinder is inserted in the concrete slurry, after filling moving cylinder, mention this determinator, and strike off with the concrete slurry of scraper with mobile nozzle;
(2) one hold the holder handle, another portable moving cylinder handle, and the Control Measures for Concrete Slump in the moving cylinder then aligns the moving cylinder lower edge with concrete peak on the circular firm banking;
(3) observe the position at moving cylinder pull bar monumented point place, if moving cylinder pull bar monumented point on the holder guide pole under the slump of demarcating monumented point below, illustrate that then the prepared concrete slurry slump is excessive; If moving cylinder pull bar monumented point on the holder guide pole between the upper and lower monumented point of the slump of demarcating, illustrate that then the prepared concrete slurry slump is suitable; If moving cylinder pull bar monumented point demarcate on the holder guide pole monumented point on the slump above, illustrate that then the prepared concrete slurry slump is too small;
Simultaneously according to the corresponding position of monumented point on moving cylinder pull bar monumented point and the holder guide pole, the slump value that can read prepared concrete slurry.
CN 200910235543 2009-10-12 2009-10-12 Quick measuring device for concrete slump and usage method Expired - Fee Related CN101692083B (en)

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Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
CN101893538B (en) * 2010-07-16 2011-11-30 中南大学 Self-compacting concrete filling performance testing device
CN103675245B (en) * 2013-12-17 2015-11-18 中国建筑第八工程局有限公司 For detecting the method and apparatus of concrete ultra-high pumping performance
CN104101698B (en) * 2014-07-10 2016-08-24 国家电网公司 Double scale formula slump measuring instrument
CN104165063B (en) * 2014-08-15 2016-04-27 山东科技大学 A kind of mine working whitewashing rebound amount measures experimental system for simulating
CN104330335B (en) * 2014-10-24 2017-06-13 无锡帝科电子材料科技有限公司 A kind of device for the detection of electric slurry plasticity
CN104865156B (en) * 2015-05-15 2017-11-14 长安大学 A kind of cement concrete isolation degree evaluation device and its evaluation method
CN105510564B (en) * 2015-12-23 2017-07-25 重庆市建标工程技术有限公司 Slump test carriage
CN107328691B (en) * 2017-07-11 2019-08-06 东南大学 A kind of device and method that detection concrete has both good fluidity and standing
CN111912746B (en) * 2020-06-09 2022-08-02 广西大学 Quantitative evaluation method for analyzing concrete workability based on bottom resistance
CN112067796B (en) * 2020-09-28 2021-05-14 首建建设发展有限公司 Pouring equipment capable of automatically detecting concrete slump and adjusting concrete slump

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