CN202710437U

CN202710437U - Testing instrument for workability of roller compacted rubberized concrete

Info

Publication number: CN202710437U
Application number: CN 201220414508
Authority: CN
Inventors: 王兆; 杨锐; 宋功业
Original assignee: Jiangsu Institute of Architectural Technology
Current assignee: Jiangsu Institute of Architectural Technology
Priority date: 2012-08-21
Filing date: 2012-08-21
Publication date: 2013-01-30
Anticipated expiration: 2022-08-21

Abstract

The utility model discloses a testing instrument for the workability of roller compacted rubberized concrete and belongs to a concrete testing instrument. The testing instrument for the workability of the roller compacted rubberized concrete comprises a vibration table, a container, a funnel, a rotation support frame, a round disc and a loading block, wherein the container, the funnel and the rotation support frame are installed on the vibration table, the round disc and the loading block are installed on the rotation support frame, the rotation support frame comprises a support pillar fixedly arranged at one side of the container, and a rotation frame which is installed on the support pillar and is capable of rotating, a cross arm extending towards one side is arranged on the rotation frame, and is provided with the funnel, and the round disc and the loading block located on the round disc are arranged at the other side of the rotation frame. The testing instrument for the workability of the roller compacted rubberized concrete has the advantages of being simple in structure, convenient to operate, and capable of conveniently detecting the workability of the roller compacted rubberized concrete.

Description

Roll rubber concrete workability tester

Technical field

The utility model relates to a kind of slump tester, and specifically a kind of rubber concrete workability tester that rolls is mainly used in rolling the test of rubber concrete workability.

Background technology

Roller compacted concrete was called the roller compacted concrete mix before sclerosis.It must have good workability, to guarantee to obtain good making quality.The workability of roller compacted concrete mix comprises: workability, plasticity, stability and Yi Mixing.The roller compacted concrete mix that workability is good should have the denseness that adapts with construction environment condition (such as temperature, relative humidity etc.); Plasticity namely can produce suitable plastic yield under certain External Force Acting preferably; Stable preferably, namely mix does not separate in the middle of work progress; Easy close property preferably namely is easy to closely knit under the mechanical effects such as vibrating roller and is full of template.

The specific construction method of roller compacted concrete requires mix must have suitable workability, can sustain the pressure of vibrating roller, can not be too stiff, in order to avoid the densification that is difficult to shake is real.The roller compacted concrete mix is a kind of super stiff mix, and the slump is zero, can not determine its workability with traditional slump consistancy test method, and measuring its workability with the vigorous workability instrument of dimension can not be entirely satisfactory.

Roll the rubber concrete workability and adopt VC value representation (namely under fixedly vibration frequency and amplitude, fixed pressure condition, mix is from beginning to vibrate the number of seconds of surperficial bleeding required time).The VC value is larger, illustrates that the mixing concrete material is more dried thick, more is not easy grinding compacting, and generally, the VC value is proper at 5～30S.The workability assay method of the roller compacted concrete that other is relevant is not found in retrieval.

Summary of the invention

For addressing the above problem, the utility model provides a kind of rubber concrete workability tester that rolls, and is used for rolling the test of rubber concrete workability.

The utility model is realized with following technical scheme: a kind of rubber concrete workability tester that rolls its involving vibrations platform, is installed in container, funnel and runing rest on the shaking table, and is installed in disk and loading piece on the runing rest; Described runing rest comprises that one is fixedly mounted on the pillar of container one side, be installed in the swivel mount that can rotate on the pillar, the cross-arm that an oriented side is stretched out on swivel mount is installed a funnel on the cross-arm, a disk is installed and is positioned at loading piece on the disk at the opposite side of swivel mount; When the funnel on the swivel mount turns to the container top, the axis of funnel and the dead in line of container.

The beneficial effects of the utility model are, and are simple in structure, easy to operate, can easily detect the workability that rolls rubber concrete.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the right view of Fig. 1.

Among the figure: the 1-container; The 2-tight fixed bolt, the 3-disk; The 4-funnel; The 5-sleeve; The 6-steady arm; The 7-shaking table; 7.1-base; 7.2-the seat of honour; 7.3-vibrating spring; The 8-fixed screw; The 9-measuring staff; The 10-pillar; The 11-swivel mount; 12-loading piece.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

As depicted in figs. 1 and 2, a kind of rubber concrete workability tester that rolls, is installed in container 1, funnel 4 and runing rest on the shaking table 7 at its involving vibrations platform 7, and is installed in disk 3 and loading piece 12 on the runing rest; Runing rest has a pillar 10 that is fixedly mounted on container 1 one sides, is installed in the swivel mount 11 that can rotate on the pillar 10, and swivel mount 11 is installed on the pillar 10 by steady arm 6.The cross-arm that an oriented side is stretched out on swivel mount 11 is installed a funnel 4 on the cross-arm, a disk 3 is installed and is positioned at loading piece 12 on the disk 3 at the opposite side of swivel mount 11; When the funnel 4 on the swivel mount turns to the container top, the dead in line of the axis of funnel and container 1.The opposite side of swivel mount 11 is connected with tight fixed bolt by coupling sleeve 5 and is connected a vertical measuring staff 9, and the upper end of measuring staff 9 penetrates and uses the tight fixed bolt tightening in the coupling sleeve 5; There is external thread the lower end of measuring staff 9, has one and the mounting hole that cooperates of the lower end of measuring staff 9 on the center of circle of disk 3, and loading piece 12 is through the lower end of measuring staff 9 and is placed on the disk, and the mounting hole nut tightening of disk 3 is passed in the lower end of measuring staff 9; By shaking table 7 comprise base 7.1, the seat of honour 7.2 and be installed in base and the seat of honour between vibrating spring 7.3.

Present embodiment container 1 is cylinder, forms base thickness 7.5mm with 1.5-3 millimeter steel plate processing and fabricating; The internal diameter of container is 240 ± 2mm, and the inwall of high 200 ± 2mm, container is vertical with the bottom surface, and its error of perpendicularity is not more than 1.0mm.Be fixed on fixed screw 8 on the seat of honour 7.2 of shaking table 7.

Disk 3 usefulness organic glass are made, and diameter is 230 ± 2mm, thickness 10 ± 2mm.Disk requirement transparent (visual good), smooth, its flatness error is not more than 0.30mm.

Swivel mount is by sleeve 5; Steady arm 6; Measuring staff 9; Pillar 10; Swivel mount 11 forms; After swivel mount 11 rotations were in place, the axis of funnel 4 should overlap with the axis of container 1, and its coaxiality error is not more than 3.0mm; After turning to disk 3 positions, the axis of measuring staff 9 should overlap with the axis of container, and its coaxiality error is not more than 2.0mm; The quality of loading piece 12 and sorrowful bar is 2.75 ± 0.05kg; Measuring staff should have the graduated scale that minimum calibration is 0～300mm of 1.0mm, and when disk was placed container 1 upper end, graduated scale should be on the zero graduation line.

The vibration frequency of shaking table 7 is 50 ± 3.3Hz, and amplitude is 0.5 ± 0.1 ㎜; Vibration table surface length is 380 ± 5mm, wide 260 ± 5mm; Vibration table surface is parallel with the bottom surface of base, and its parallelism error is not more than 1.0mm; The shaking table spring soaks moulds processing; Gross mass should be 33 ± 2kg; Shaking table is directional vertical vibration, and frequency is 50 ± 3Hz; The vibrator motor insulating resistance value should be less than 2M Ω.

The workability method of testing that specifically rolls rubber concrete is as follows:

(1) clean container 1, pressing plate etc. wetting before the test.

The mix that (2) will mix and stir is poured on the steel plate, scrapes the mix that is bonded on the stirring machine, and turns together evenly, shakeouts.When filling with substance, reinforced from funnel, minute two-layer container of packing into, lower floor should surpass half storey, and the upper strata is filled to nozzle and flushes, and every dress one deck begins to smash 25 times to even wiping of center convolution shape from container perimeter with tamper.The degree of depth is smash in wiping, and bottom should be wiped and smash at the bottom of the cylinder, and the upper strata should be rubbed into the surface 1～2cm of lower floor.The upper strata wipe smash complete after, with surfacing.

(3) container 1 with charging is fixed on the shaking table 7.Rotate runing rest, disk 3 on the runing rest, loading piece 12 are added to the mix surface, start shaking table and begin simultaneously timing, write down from vibration and begin the required time of grout (reading is accurate to 0.5s) all to occur to periphery, this time is exactly to need the workability that rolls the rubber concrete material measured.

(4) test should be mixed and stirred in complete rear 20 minutes at mix and be carried out, and the mix of testing is used the Polypropylence Sheet covering and avoided the moisture evaporation.Test is carried out twice.

The utility model can also dispose the slump cylinder that can put into container 1, is used for the working-yard and tests the normal concrete slump.

Claims

1. one kind is rolled rubber concrete workability tester, it is characterized in that, its involving vibrations platform (7), be installed in container (1), funnel (4) and runing rest on the shaking table (7), and be installed in disk (3) and loading piece (12) on the runing rest; Described runing rest comprises that one is fixedly mounted on the pillar (10) of container (1) one side, be installed in the swivel mount (11) that can rotate on the pillar (10), the cross-arm that an oriented side is stretched out on swivel mount (11), one funnel (4) is installed on the cross-arm, a disk (3) is installed and is positioned at loading piece (12) on the disk (3) at the opposite side of swivel mount (11); When the funnel on the swivel mount (4) turns to container (1) top, the dead in line of the axis of funnel and container (1).

2. the rubber concrete workability tester that rolls according to claim 1, it is characterized in that, the opposite side of described swivel mount (11) is connected a vertical measuring staff (9) by coupling sleeve (5) with tight fixed bolt, the upper end of measuring staff (9) penetrates and uses the tight fixed bolt tightening in the coupling sleeve (5); There is external thread the lower end of measuring staff (9), have one and the mounting hole that cooperates of the lower end of measuring staff (9) on the center of circle of disk (3), loading piece (12) is through the lower end of measuring staff (9) and is placed on the disk, and the mounting hole nut tightening of disk (3) is passed in the lower end of measuring staff (9).

3. the rubber concrete workability tester that rolls according to claim 1 is characterized in that, described shaking table (7) comprise base (7.1), the seat of honour (7.2) and be installed in base and the seat of honour between vibrating spring (7.3).