CN103630454B - A kind of cement concrete wearing quality film index testing instrument and method of testing thereof - Google Patents
A kind of cement concrete wearing quality film index testing instrument and method of testing thereof Download PDFInfo
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- CN103630454B CN103630454B CN201310598003.5A CN201310598003A CN103630454B CN 103630454 B CN103630454 B CN 103630454B CN 201310598003 A CN201310598003 A CN 201310598003A CN 103630454 B CN103630454 B CN 103630454B
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- cement concrete
- test specimen
- motor
- friction roller
- wearing quality
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Abstract
The invention discloses a kind of cement concrete wearing quality index testing device, comprise: support unit, power part, and experimental part, wherein, support unit comprises base and is installed on the column on base, base offers the test specimen groove placing cement concrete test specimen; Power part comprises the motor be installed on column and the rotating shaft be connected with motor; Experimental part comprises the follower lever connected vertically with rotating shaft, the end of follower lever is provided with the friction roller that can rotate, friction roller is positioned at directly over test specimen groove, and contacts with the cement concrete test specimen be positioned in test specimen groove, and friction roller is provided with projection.By the friction roller with projection under the drive of motor, in an oscillatory manner impact friction is carried out to the cement concrete be positioned in test specimen groove, simulate the sight of road shocks wearing and tearing to cement concrete, and then can more accurately, objectively can make evaluation to cement concrete wearing quality.
Description
Technical field
The invention belongs to cement concrete detection field, particularly relate to a kind of cement concrete wearing quality film index testing instrument and method of testing thereof.
Background technology
Wearing quality is the main durability index of cement concrete pavement, along with the high speed development of China's road engineering, adopts cement concrete to get more and more as the road surface of material.A lot of road damages and causes because wearing quality is too poor.So be very important to the evaluation of cement concrete pavement wearing quality.The method of the evaluation wearing quality of existing wearing quality utilizes ball bearing method, and its principle take ball bearing as bistrique, and this bistrique, when ordinance load rotates, rolls and sliding friction to producing by flour milling.This all evaluation method does not consider the impact friction of vehicle road pavement, and the place of concrete road surface serious wear is the place of vehicular impact wearing and tearing.
Summary of the invention
For above-mentioned defect or deficiency, the object of the present invention is to provide a kind of cement concrete wearing quality film index testing instrument and method of testing thereof, can the wearing quality of accurate test water cement concrete.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of cement concrete wearing quality index testing device, comprising: support unit, power part, and experimental part, wherein, support unit comprises base and is installed on the column on base, base offers the test specimen groove placing cement concrete test specimen; Power part comprises the motor be installed on column and the rotating shaft be connected with motor; Experimental part comprises the follower lever connected vertically with rotating shaft, the end of follower lever is provided with the friction roller that can rotate, friction roller is positioned at directly over test specimen groove, and contacts with the cement concrete test specimen be positioned in test specimen groove, and friction roller is provided with projection.
The end of described follower lever is provided with friction roller support, and friction roller is installed on friction roller support by bearing.
Described follower lever is provided with the spring alleviating driven vibration of bar.
Described column is provided with the speed setting unit be connected with motor and switchgear.
Shown power part also comprises the round-meshed disk in center, and disk is installed on motor, and rotating shaft is connected with motor through circular hole.
It is cylindrical structure that described column is installed on described friction roller on base by stator.
Based on a method of testing for cement concrete wearing quality index testing device according to claim 1, comprise the following steps:
(1) measure the good cement concrete test specimen volume of maintenance, be recorded as v
1, measure the area s of concrete by rubbing surface;
(2) be positioned in test specimen groove by cement concrete test specimen, actuating motor, motor drives friction roller to carry out impact friction experiment to surface of test piece;
(3) after testing the schedule time, close motor, terminate impact friction experiment, the concrete powder under cement concrete surface of test piece being rubbed is removed, and then carries out second time stereometry, recording volume v
2;
(4) soil cement average impact friction one-tenth-value thickness 1/10 (v is calculated
1-v
2)/s;
(5) cement concrete wearing quality index is evaluated according to gained earth average impact friction one-tenth-value thickness 1/10.
Compared with the prior art, beneficial effect of the present invention is:
The invention provides a kind of cement concrete wearing quality index testing device, by support unit, power part, and experimental part composition, make proving installation structure simple, easy to operate, the present invention is connected vertical to machine shaft and follower lever, friction roller with projection is installed on end, to make friction roller under the drive of motor, in an oscillatory manner impact friction is carried out to the cement concrete be positioned in test specimen groove, simulate the sight of road shocks wearing and tearing to cement concrete, and then can be more accurate, objectively evaluation can be made to cement concrete wearing quality.
Further, adopt cylindrical friction roller in the present invention, the more friction that is subject to of real simulation road surface, in addition, follower lever is provided with spring vibration damper, the mode of action of real simulation carload.
A kind of cement concrete wearing quality indication test method provided by the invention, by obtaining cement concrete test specimen before and after the percussive action of cement concrete wearing quality index testing device, the ratio of volume change and the area by rubbing surface, the objective appraisal wearing quality of cement concrete, wherein, average impact friction one-tenth-value thickness 1/10 is larger, and the wearing quality of cement concrete is poorer; Otherwise its wearing quality is better, and then provide reference data for experiment.
Accompanying drawing explanation
Fig. 1 is cement concrete wearing quality index testing device structural representation provided by the invention;
Fig. 2 is cement concrete wearing quality index testing device test pattern provided by the invention.
In figure, 1 is disk, and 2 is motor, and 3 is column, and 4 is base, and 5 is rotating shaft, 6 is follower lever, and 7 is spring, and 8 is friction roller support, and 9 is friction roller, and 10 is circular hole, and 11 is stator, 12 is test specimen groove, and 13 is coupling arrangement, and 14 is bearing, and 15 is speed setting unit, and 16 is switchgear.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Shown in Fig. 1,2, the invention provides a kind of cement concrete wearing quality index testing device, comprising: support unit, power part, and experimental part:
Support unit comprises base 4 and is installed on the column 3 on base 4, and column 3 is provided with stator 11 with the bearing of base 4, and column 3 is installed on base 4 by stator 11, base 4 offers the test specimen groove 12 placing cement concrete test specimen;
Power part comprises the motor 2 be installed on column 3 and the rotating shaft 5 be connected with motor 2, motor 2 is provided with the disk 1 of center with circular hole 10, disk 1 is installed on motor 2, rotating shaft 5 is connected with motor 2 through circular hole 10, and described column 3 is provided with the speed setting unit 15 be connected with motor 2 and switchgear 16;
Experimental part comprises the follower lever 6 connected vertically with rotating shaft, follower lever 6 is connected with rotating shaft by coupling arrangement 13, the end of follower lever 6 is provided with the friction roller 9 that can rotate, friction roller 9 is cylindrical structure, friction roller 9 is positioned at directly over test specimen groove 12, and contact with the cement concrete test specimen be positioned in test specimen groove 12, friction roller 9 is provided with projection.Preferably, the end of described follower lever 6 is provided with friction roller support 8, and friction roller 9 is installed on friction roller support 8 by bearing 14, follower lever 6 is provided with the spring 7 alleviating driven vibration of bar.
In the present invention, described support unit comprises base 4, and whole device is stablized in its effect, and experiment can steadily be carried out smoothly; Column 3, the power part on its effect supporting top and test parts; Stator 11, is fixed on column 3 on base 4.Described power part comprises motor 2, and its effect is to provide test parts power, drives follower lever 6 to rotate, thus make friction hammer and friction roller 9 pairs of test specimens carry out impact friction by rotating shaft; The effect of disk 1 is separated motor and previous experiments parts, ensures experimenter's safety, and the effect of the circular hole of disk 1 is that the rotating shaft 5 that transference motor is connected is passed through; The rotating shaft 5 be connected with motor, its effect is that motor power is passed to follower lever 6, drives follower lever 6 to rotate; Coupling arrangement 13, its effect connects the rotating shaft 5 and follower lever 6 that are connected with motor; Motor speed regulating device 15, its effect is the rotating speed regulating motor 2, provides different impact friction speed; Switchgear 16, its effect starts and stop motor 2 to rotate.Described test parts comprises follower lever 6, and its effect drives friction roller 9 to rotate to carry out impact friction to test specimen; Spring 7, its effect alleviates driven vibration of bar, imitates the shock mitigation system of automobile, makes percussive action more close to road surface truth; Friction roller support 8, its effect is fixed friction roller, is connected with friction roller by bearing 14; Bearing 14, its effect is that friction roller 9 can be rotated; Friction roller 9 is right cylinder, and its effect carries out impact friction to cement concrete surface, the projection on friction roller 9, and its effect rubs to concrete sample surface; Test specimen groove 12, its effect holds fixing cement concrete test specimen.
Concrete operations comprise the following steps:
(1) measure the good cement concrete test specimen volume of maintenance, be recorded as v
1, measure the area s of concrete by rubbing surface;
(2) be positioned in test specimen groove 12 by cement concrete test specimen, actuating motor 2, motor 2 drives friction roller 9 pairs of surface of test piece to carry out impact friction experiment;
(3) after testing the schedule time, close motor 2, terminate impact friction experiment, the concrete powder under cement concrete surface of test piece being rubbed is removed, and then carries out second time stereometry, recording volume v
2;
(4) soil cement average impact friction one-tenth-value thickness 1/10 (v is calculated
1-v
2)/s;
(5) cement concrete wearing quality index is evaluated according to gained earth average impact friction one-tenth-value thickness 1/10.Carry out the evaluation of cement concrete wearing quality, average impact friction one-tenth-value thickness 1/10 is larger, and the wearing quality of cement concrete is poorer; Otherwise its wearing quality is better.
The technology of the present invention is improved further and is with feature:
1, tester of the present invention can apply percussive action to test specimen, and real simulation road shocks weares and teares.
2, in the present invention, follower lever is provided with spring vibration damper, the mode of action of real simulation carload.
3, the present invention adopts cylindrical friction roller, the more friction that is subject to of real simulation road surface.
4, the present invention proposes method and the index of new evaluation road surface wearing quality, new method can evaluate the wearing quality of cement concrete more objectively.
5, the present invention as required, can regulate the rotating speed of motor.
6, this device is simple to operate, economical and practical.
Claims (7)
1. a cement concrete wearing quality index testing device, it is characterized in that, comprise: support unit, power part, and experimental part, wherein, support unit comprises base (4) and is installed on the column (3) on base (4), base (4) offers the test specimen groove (12) placing cement concrete test specimen; Power part comprises the motor (2) be installed on column (3) and the rotating shaft (5) be connected with motor (2); Experimental part comprises and rotating shaft (5) follower lever connected vertically (6), the end of follower lever (6) is provided with the friction roller (9) that can rotate, friction roller (9) is positioned at directly over test specimen groove (12), and contact with the cement concrete test specimen be positioned in test specimen groove (12), (9) are provided with projection to friction roller, described column (3) are provided with the speed setting unit (15) and switchgear (16) that are connected with motor (2).
2. cement concrete wearing quality index testing device according to claim 1, it is characterized in that, the end of described follower lever (6) is provided with friction roller support (8), and friction roller (9) is installed on friction roller support (8) by bearing (14).
3. cement concrete wearing quality index testing device according to claim 1 and 2, is characterized in that, described follower lever (6) is provided with the spring (7) alleviating driven vibration of bar.
4. cement concrete wearing quality index testing device according to claim 1, it is characterized in that, shown power part also comprises the disk (1) of center with circular hole (10), disk (1) is installed on motor (2), and rotating shaft (5) is connected with motor (2) through circular hole (10).
5. cement concrete wearing quality index testing device according to claim 1, is characterized in that, described column (3) is installed on base (4) by stator (11).
6. cement concrete wearing quality index testing device according to claim 1, is characterized in that, described friction roller (9) is cylindrical structure.
7., based on a method of testing for cement concrete wearing quality index testing device according to claim 1, it is characterized in that, comprise the following steps:
(1) measure the good cement concrete test specimen volume of maintenance, be recorded as v
1, measure the area s of concrete by rubbing surface;
(2) be positioned over by cement concrete test specimen in test specimen groove (12), actuating motor (2), motor (2) drives friction roller (9) to carry out impact friction experiment to surface of test piece;
(3) after testing the schedule time, close motor (2), terminate impact friction experiment, the concrete powder under cement concrete surface of test piece being rubbed is removed, and then carries out second time stereometry, recording volume v
2;
(4) soil cement average impact friction one-tenth-value thickness 1/10 (v is calculated
1-v
2)/s;
(5) cement concrete wearing quality index is evaluated according to gained earth average impact friction one-tenth-value thickness 1/10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598003.5A CN103630454B (en) | 2013-11-21 | 2013-11-21 | A kind of cement concrete wearing quality film index testing instrument and method of testing thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598003.5A CN103630454B (en) | 2013-11-21 | 2013-11-21 | A kind of cement concrete wearing quality film index testing instrument and method of testing thereof |
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| CN103630454A CN103630454A (en) | 2014-03-12 |
| CN103630454B true CN103630454B (en) | 2016-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2718562C1 (en) * | 2019-09-27 | 2020-04-08 | Федеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наук | Method for determination of frictional properties of materials and device for its implementation |
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| CN109060574B (en) * | 2018-08-22 | 2020-11-17 | 天长市水电建筑安装工程公司 | Concrete testing device and method for hydraulic engineering |
| CN111458249A (en) * | 2019-01-21 | 2020-07-28 | 上海城建物资有限公司 | Method for rapidly evaluating grindability of concrete |
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| CN113804570A (en) * | 2021-11-16 | 2021-12-17 | 中建安装集团有限公司 | Cement-based material surface detection device and detection method thereof |
| CN114755133B (en) * | 2022-06-15 | 2022-09-16 | 深圳市合扬智能卡科技有限公司 | Waterproof material wear resistance testing device and method for cold wallet |
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| CN87207632U (en) * | 1987-05-06 | 1988-03-23 | 铁道部第三勘测设计院 | Abrasion tester for stones |
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| RU2718562C1 (en) * | 2019-09-27 | 2020-04-08 | Федеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наук | Method for determination of frictional properties of materials and device for its implementation |
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| CN103630454A (en) | 2014-03-12 |
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