CN203432930U

CN203432930U - Determinator

Info

Publication number: CN203432930U
Application number: CN201320509192.XU
Authority: CN
Inventors: 余再西; 曹净; 刘海明
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2014-02-12
Anticipated expiration: 2023-08-20

Abstract

The utility model discloses a determinator, comprising an engine base, a test rod, a fixed nut, a pointer, a staff gauge, a test needle, a mold, a glass plate, a bracket and a dial indicator, wherein the test needle is arranged at the lower end of the test rod; the pointer is arranged on the test rod; the test rod is fixed on the engine base through the fixed nut; the staff gauge is arranged on the engine base 1; the mold is placed on the engine base and arranged below the test needle; the dial indicator is connected with the test rod and fixed through the bracket; the glass plate is arranged at the bottom of the mold. Two different range gears are set on the device; a large-range gear can be selected to determine the initial setting time of cement, and a small-range and high-accuracy gear also can be selected to determine the final settling time of the cement and the softening depth of a specimen when the determinator is used. By adopting the determinator, the final settling time of the cement can be accurately determined; the softening depth of corroded cemented soil and the softening depths of high-temperature softening materials such as asphalt at different temperatures can be determined.

Description

A kind of analyzer

Technical field

The utility model relates to a kind of high precision multi-purpose analyzer, and it can be used for measuring under cement setting time, erosion environment not the softening degree of depth of high temperature softener material under different temperatures such as the softening degree of depth of test specimen and pitch in the same time.

Technical background

Cement setting time is one of cement important physical properties index, adopt " Vicat apparatus methods " are measured more both at home and abroad at present, although this method is simple to operate, the mensuration of final setting time is come with some shortcomings, whether main manifestations reaches final set for whether leaving a trace to differentiate cement on test specimen surface with the annulus on final set pin at present, owing to can not observing cement final set condensation process before, usually miss real final setting time, correction after missing to revising setting time, lacks reliable foundation mainly with operating personnel's subjective judgement.Cement mixing method is a kind of conventional soft-soil foundation treatment method, usually because being subject to the erosion of various ions, there is softening destruction in the soil cement in salt pool soil or briny environment, it is to characterize it to be subject to an important indicator of extent of corrosion in the softening degree of depth in the same time not, but because its value is less, generally only have several millimeters, even less, it is variable quantity is in the same time not small especially, to observe under study for action the softening degree of depth with the Changing Pattern of erosion time, require instrument to there is enough precision, existing Vicat apparatus measuring accuracy is 0.5mm, obviously can not meet the demands.The softening degree of depth of the high temperature softener materials such as pitch under different temperatures is also an important indicator that characterizes its performance, but the method for test is more complicated, consuming time longer at present, repeatable poor.

Summary of the invention

The utility model is intended to overcome existing instrument in test and study and is measuring the deficiency existing on cement final setting time, while measuring the softening degree of depth of test specimen, precision is inadequate, the repeatable problem such as poor while measuring the softening degree of depth of pitch, a kind of high precision multi-purpose analyzer is provided, this analyzer has range 0-70mm, precision 0.5mm and range 0-10mm, two gears of precision 0.01mm, with time can realize different research purposes according to need to select different ranges and the precision of actual tests or research.

The utility model high precision multi-purpose analyzer comprises support 1, bar 2, hold-down nut 3, pointer 4, scale 5, test point 6, mould 7, glass plate 8, support 9, dial gauge 10, test point 6 is arranged on bar 2 lower ends, pointer 4 is arranged on bar 2, bar 2 is fixed on support 1 by hold-down nut 3, scale 5 is arranged on support 1, mould 7 is placed on support 1 and is placed in test point 6 belows, and dial gauge 10 is connected with bar 2 and passes through support 9 and fix, and glass plate 8 is arranged on mould 7 bottoms.

The utility model advantage is as follows:

When measuring cement setting time, this device has been compared following features with existing Vicat apparatus, the mensuration of jelling time is consistent with existing Vicat apparatus, but this device of mensuration of final setting time has its obvious advantage: the mensuration of (1) final setting time and initial set adopt same test point, have avoided changing the testing differentia existing between test point and different test point midway; (2) this device is owing to having added dial gauge, measuring accuracy is improved greatly, whether the degree of depth that the judgement of cement final set state can be directly sunk to test specimen by test point reaches 0.5mm is differentiated, and can observe cement and reach final set state condensation process before, obtain test point sinkage----hydrated cementitious time curve, can clearly find out thus aquation and the gain in strength process of cement, for judgement cement physical properties has added a useful information.

Measuring soil cement not in the softening degree of depth in the same time, this device advantage is: (1) precision high (0.01mm), and the considerable test specimen of measuring, in the softening degree of depth and subtle change thereof in the same time not, finally obtains test specimen and softens degree of depth curve over time; Therefore (2) because test point is tiny, test specimen is not damaged substantially, can in the softening degree of depth in the same time not, carry out Continuous Observation to same test specimen.

When measuring the softening degree of depth of the high temperature softener materials such as pitch, its advantage is: simple to operate, precision is high, repeatability is strong, same test specimen can take multiple measurements, and can measure the softening situation of test specimen diverse location, can carry out Continuous Observation to the same test specimen under different temperatures.

Accompanying drawing explanation

Fig. 1 the utility model structural representation;

In figure: 1-support, 2-bar, 3-hold-down nut, 4-pointer, 5-scale, 6-test point, 7-mould, 8-glass plate,

9-support, 10-dial gauge.

Embodiment

Below by drawings and Examples, the utility model is described in further detail, but protection domain of the present utility model is not limited to described content.

embodiment 1:a kind of high-accuracy multifunctional analyzer of the utility model comprises support 1, bar 2, hold-down nut 3, pointer 4, scale 5, test point 6, mould 7, glass plate 8, support 9, dial gauge 10, test point 6 is arranged on bar 2 lower ends, pointer 4 is arranged on bar 2, bar 2 is fixed on support 1 by hold-down nut 3, scale 5 is arranged on support 1, mould 7 is placed on support 1 and is placed in test point 6 belows, and dial gauge 10 is connected with bar 2 and passes through support 9 and fix, and glass plate 8 is arranged on mould 7 bottoms.

When this device is used for measuring cement setting time, concrete operation step is as follows:

1,, before test, check whether maintenance environment temperature is 20 ± 2 ℃, relative humidity >90%; Cement is crossed to 0.9mm sieve standby;

2, the preparation of test specimen: with normal consistency water in accordance with regulations condition make the clean slurry of normal consistency and once fill mould 7, vibration strikes off for several times, puts into immediately moisture curing box maintenance, the time when recording cement and being all added to the water is as the initial time of setting time;

3, measure front preliminary work: while adjusting the test point 6 contact glass sheet 8 of analyzer, pointer 4 makes its zero adjustment position;

4, the mensuration in presetting period: take out and measure after test piece maintenance 30min, recording test time and test point sink to the degree of depth of test specimen, if test point is sink to apart from glass plate 4mm ± 1mm, sink to test specimen 36mm ± 1mm, illustrate that cement reaches final set, test duration and the time interval of condensing between initial time are the presetting period of cement; If test point directly runs through test specimen, contact with glass plate, illustrate apart from jelling time far, test specimen is put back to curing box, after 30 minutes, take out and measure judgement again; If test point does not contact with glass plate but does not reach again 4mm ± 1mm with the distance of glass plate, illustrate that cement is about to reach initial set, need to shorten the time interval of twice measurement, test specimen is put back to curing box and continue, after 5 minutes, take out and measure judgement again, until cement initial set.Concrete determination step is: the sample taking out from moisture curing box with mould and glass plate is placed in support 1 bottom platform central authorities, reduce test point and cement paste Surface Contact, tighten after hold-down nut 3 1s-2s, loosen suddenly, sink in cement paste test point 6 Vertical Frees, observe and record the reading that test point 6 stops sinking or discharges test point 30s backpointer, and record from after water injection to time interval of this mensuration (representing with " min ") simultaneously, while reaching initial set, should repeat immediately to survey once, when twice conclusion is identical, just can be decided to be the initial set state that reaches.Due to test point sinkage in this process large (being generally greater than 35mm), accuracy requirement is lower, uses range 0-70mm, and the gear of precision 0.5mm can meet the demands, does not need to use dial gauge;

5, the mensuration of final setting time: mould and sample are taken off from glass plate 8 in the mode of translation, make large end upwards, be placed on glass plate, again glass plate is put into together with mould to moisture curing box and continued maintenance, every 15 minutes, take out and survey once, in measuring process, needn't with initial set pin, measure with changing test point, record time and test point sinkage corresponding while measuring at every turn.When test point submergence depth is 0.5mm, cement reach cement final set state, and this time minute and the difference of cement setting start time are cement final setting time; When test point sinks to the test specimen degree of depth, to be greater than 10mm explanation also far away apart from cement final setting time, can be every 15 minutes, and observation is once; When test point sinks to the test specimen degree of depth, be less than 10mm, illustrate now more approaching apart from cement final set, every 5 minutes observation once.Concrete operation method is with the mensuration of jelling time.

6, test at every turn after by instrument wiped clean, keep in order to use next time.

embodiment 2:the present embodiment apparatus structure is with embodiment 1, and when measuring pitch softness number, concrete operations are as follows:

1, make test specimen, be placed in constant temperature oven and by calorstat temperature and be adjusted into assigned temperature, carry out constant temperature processing;

2, bar, test point and dial gauge are installed, after installing, are slided up and down bar and detect it and whether smooth and easyly slide up and down, if having some setbacks, detect reason and fix a breakdown;

3, test specimen constant temperature is placed on the platform of support bottom to taking out test specimen after setting-up time, adjust test point to just with test specimen Surface Contact, tighten hold-down nut 3 and record dial gauge or the corresponding initial number of degrees of scale pointer, unclamp nut 3, allow test point free-falling;

4, until test point, sink stable or discharge after test point 30s, record the corresponding end of a period reading of dial gauge or scale pointer, the difference of twice reading is the softening degree of depth of test specimen, test specimen is put back in constant temperature oven, and calorstat temperature is set as to next stage probe temperature, complete after the mensuration of the corresponding softening degree of depth of all design temperatures, can obtain its softening degree of depth variation with temperature curve;

5, test at every turn after by instrument wiped clean, keep in order to use next time.

embodiment 3:the present embodiment apparatus structure, with embodiment 1, is corroded the mensuration of after-tack degree for soil cement, concrete operations are as follows:

1, make test specimen, be soaked in simulation erosion environment;

3, by arriving the test specimen of specifying soak time, from soak solution, take out, with wet rag, dry after the water droplet of test specimen surface, test specimen is placed on the platform of support bottom, select range 0-10mm, the gear of precision 0.01mm;

4, adjust test point to just with test specimen Surface Contact, tighten hold-down nut 3 and record the now corresponding initial number of degrees of dial gauge, unclamp nut 3, allow test point free-falling;

5, until test point, sink stable or discharge after test point 30s, record the corresponding end of a period reading of dial gauge or scale pointer, the difference of twice reading is the softening degree of depth of test specimen, test specimen is put back in soak solution and continued to soak, until setting-up time takes out and measures again next time, complete all designs and corrode after the mensuration of the corresponding softening degree of depth of the moment, can obtain its softening degree of depth with the change curve of erosion time;

Claims

1. an analyzer, it is characterized in that: it comprises support (1), bar (2), hold-down nut (3), pointer (4), scale (5), test point (6), mould (7), glass plate (8), support (9), dial gauge (10), test point (6) is arranged on bar (2) lower end, pointer (4) is arranged on bar (2), bar (2) is fixed on support (1) by hold-down nut (3), scale (5) is arranged on support (1), mould (7) is placed on support (1) and goes up and be placed in test point (6) below, dial gauge (10) is connected with bar (2) and passes through support (9) and fix, glass plate (8) is arranged on mould (7) bottom.