CN85107635A

CN85107635A - Bituminous concrete multifunction testing device

Info

Publication number: CN85107635A
Application number: CN 85107635
Authority: CN
Inventors: 刘贵增; 王燕玮; 武毅; 梁建宁; 谢产庭
Original assignee: URBAN ENGINEERING RESEARCH INST BM
Current assignee: URBAN ENGINEERING RESEARCH INST BM
Priority date: 1985-10-21
Filing date: 1985-10-21
Publication date: 1987-05-06

Abstract

The present invention is a road engineering material---the special-purpose machinery that " bituminous concrete " mechanical property test is used.On same test instrument, each pressurizer and corresponding sensor of configuration that only needs to change special use just can automatically carry out Marshall (MARSHALL) test, diametral compression test, bending test, three (enclosed) test respectively under the control of microcomputer.This test instrument has adopted with digital form output through the test findings after the statistical treatment with provide the way of output of the whole dynamic process change records of test parameters with graphic form.In the pressurizer of diametral compression test, be provided with and prevent collapsing grid, guaranteed people, the machine safety of low temperature cracking test effectively.

Description

Bituminous concrete multifunction testing device

The present invention relates to a kind of mechanical property multifunction test instrument through paving material-" bituminous concrete " in the road engineering of improving and making up.

Because the testing requirements to the every mechanical property of bituminous concrete of different proportionings is satisfied in road engineering and the research work thereof in Marshall (MARSHALL) test, diametral compression test, bending test, these four tests of triaxial test substantially, so the home and abroad mostly adopts these four kinds of test methods respectively asphalt concrete material to test.These four tests in the past do not have specialized equipment, carry out on the Material Testing Machine of middle or small tonnage.The device therefor volume is doted on greatly, complicated operation, and the reading manual method is easy to generate error; To do a lot of calculating in addition.In a word, entire test efficient is lower.

Task of the present invention provides the bituminous concrete testing machine for mechanical properties tool of And through improving and making up of being badly in need of in a kind of industry research and the production, it specially can make the overall process of each test automatically carry out as carrying out Marshall Test, diametral compression test, bending test, three (enclosed) test And, provides the test findings handled by statistics exactly and changes continuous recording with the whole dynamic process that graphic form provides test parameters with digital form at last.Use this machinery, can save test period exponentially, reduce equipment cost ， And significantly the efficient of test is improved.

According to the data that the inventor grasps, domestic now do not have such special-purpose machinery; Do not retrieve data from abroad yet.

Finish the mode of task of the present invention below in conjunction with the accompanying drawing explanation of embodiment:

Fig. 1 to Fig. 6 is a specific embodiment of the present invention.It is made of frame (1), power section (2) and controller (3).The sensor of mechanics parameter value such as gaging pressure in the process of the test (configuration sees (5), (6), (7) among Fig. 3 to Fig. 5 for details as required) is sent to controller (3) with test parameters by cable; The power supply that controller (3) also will be controlled process of the test opens and closes instruction and is sent to power section (2) by umbilical cable and goes to control its action.Cable does not draw in Fig. 1.Also have a pressor areas (4) that is provided with by " multiplexing " viewpoint in the frame (1), the configuration in its space should decide by the requirement of various tests.

Marshall Test: Fig. 2 is seen in configuration, and special-purpose pressurizer (8), test specimen (9) and sensor (5), (6) are arranged.After carrying out corresponding " startups " on the controller (8) and operate by being defined in of this test, action by the control of the microcomputer follow procedure in the controller (3) entire test, comprise: to test specimen (9) pressurization, sensor (5), (electric signal of 6) Gan Shou And output test parameters is to controller (3) under the effect of power section (2) for pressurizer (8).Computer program can be controlled the whole test instrument fully and pressurize exactly, acquired signal, differentiation pressurization finish time, calculates test figure, data are carried out statistical treatment, obtained the result according to the requirement of Marshall Test; And by output with digital form with printout as a result, this part also becomes the figure output on the width of cloth recording chart under the whole variation process continuous recording with test parameters in pressure process.Entire test just can be carried out like clockwork automatically like this.The sample dimensions value of participating in calculating is imported on controller (3) keyboard in that " startup " is preceding.

Diametral compression test: Fig. 3 is seen in configuration, and special-purpose pressurizer (10), test specimen (11) and sensor (5), (6) are arranged.After carrying out corresponding " startups " on the controller (3) and operate by being defined in of this test, entire test is controlled execution by controller (3) exactly according to the requirement of diametral compression test.Provide test findings with numeral and two kinds of forms of figure at last.During test under carrying out lower temperature, because the fragility of test specimen is bigger, test specimen can split And and jeopardize two side sensers and test operation personnel at the fragment that laterally flies out being interrupted suddenly in pressure process.For solving this key problem in technology, on the pressurizer (10) of this test, installed additional specially and prevented collapsing grid (12), it can play the safeguard protection effect to the equipment and the person.In addition, also be equipped with in the microcomputer system in the controller (3) and carry out burst apart specific program under the situation of low-temperature test.Participating in the sample dimensions value of calculating imports on the keyboard of controller (8) in advance.

Bending test: Fig. 4 is seen in configuration, and special-purpose pressurizer (13), test specimen (14) and sensor (5), (6) are arranged.After carrying out corresponding " startups " operation on the controller (3) by being defined in of this test, entire test is controlled execution by controller (3) exactly by the requirement of bending test, provides test findings with digital and two kinds of forms of figure at last.The step CYCLIC LOADING that requires in this test especially was difficult for accurately realizing by former manually operated way; And in this test instrument, then can under microcomputer control, realize exactly.Participating in the sample dimensions value of calculating imports on controller (3) keyboard in advance.

Three (enclosed) test: Fig. 5 is seen in configuration, and special-purpose pressurizer (15) (annotate: i.e. triaxial tester), test specimen (16) and sensor (5), (7) are arranged.After carrying out corresponding " startups " on the controller (3) and operate by being defined in of this test, entire test is controlled execution by controller (3) exactly by the requirement of triaxial test (the continuous pressurization of enclosed), provides test findings with numeral and two kinds of forms of figure at last.

Fig. 6 is the inner structure theory diagram of the controller (3) among Fig. 1 embodiment.It is made up of microcomputer (B), amplification-analog/digital converter (A), digital printer (C) and function recording instrument (D) and heavy-current control switch (G).The digital form output (E) of test findings is finished by digital printer (C), and graphic form output (F) is finished by function recording instrument (D).

Claims

1, a kind of bituminous concrete multifunction testing device, organic frame (1), power section (2), controller (3) [more than see Fig. 1], pressurizer (8), (10), (13), (15) and sensor (5), (6), (7) [more than see Fig. 2 to Fig. 5], it is characterized in that in the space of pressor areas (4), change corresponding pressurizer (8), (10), (13), (15) and sensor (5), (6), (7) can carry out Marshall [MARSHALL] respectively (Fig. 2), splitting (Fig. 3), curved draw (Fig. 4), three [enclosed] be four kinds of mechanical property tests (Fig. 5), controller (3) has been equipped with microcomputer (B), carrying out above-mentioned four kinds of when test control pressurizations, acquired signal, differentiate, calculate, statistical treatment and result export all steps, and the method that the test findings that all is applicable to above-mentioned four kinds of tests is digital and the dual form of figure is exported is arranged.

2, bituminous concrete multifunction testing device according to claim 1 is characterized in that the microcomputer (B) that is equipped with in the controller (3) is the main body that is combined into this test instrument by sensor (5), (6), (7) and amplification-analog/digital converter (A) and frame (1), power section (2).

3, bituminous concrete multifunction testing device according to claim 1, it is characterized in that under the control of controller (3), make the test findings numeral (E) of digital printer (C) and function recording instrument (D) multiple operation and the method (Fig. 6) of the dual form output of figure (F).

4, bituminous concrete multifunction testing device according to claim 1, the pressurizer (10) that it is characterized in that diametral compression test (Fig. 3) are provided with two and anti-ly collapse grid (12), are positioned at the both sides of test specimen (11), every side each one.