Le Chatelier Water Bath Free Lime Determination DeviceAutomatic Blaine Apparatus

Automatic VICAT Needle Apparatus

Test devices for cement,gypsum and lime

Automatic VICATNeedle Apparatus

Apparatus to determine the settingtime on up to 8 specimens irre-spective from each other. The time ofbegin and end of the setting processof cement, gypsum or mortar ismeasured. The penetration depthof the Vicat needle into the specimenis measured, evaluated and savedaccording to 3 different methods.The measurements may be carriedout in any order at any of the 8available spots thus making optimumuse of the specimen surface butconsidering the conditions set bythe different standards.

Le Chatelier Water Bath

Device to determine the stability ofcement which may change whenexpanding during hydration. For thispurpose up to 16 specimen barscan be stored in a bath of boilingwater or water vapor. The heatingcycle – e.g. heating up to 100ºCwithin 30 min and keeping thistemperature constant for more than3 h – is regulated automatically andwith a high accuracy (accurate to0.1ºC). Setting time and settingtemperature may vary according tothe requirements in question.

Easy and safe handling.

Automatic Blaine Apparatus

Apparatus to determine the specificsurface of cement and otherpowdered materials. The timerequired by a certain air volumeto penetrate a powder bed ismeasured in accordance withEN 196-6.Measurement, test sequencecontrol and evaluation areautomatically performed.

Free LimeDetermination Device

Device to determine theconcentration of free lime in cementor cement clinker. For this purposethe conductivity of a cementsolution in hot glycol is measured.

The menu-guided test sequenceallows an easy and safe handlingand short test times. The testresults are available more quicklycompared to other methods, thusallowing also a quicker correctionof the furnace operation and theburning process.

HOSKIN SCIENTIFIC LTD www.hoskin.ca Vancouver | Burlington | Montreal

Mortar mixer ToniMIX Automatic needle tester ToniSET Expert

Automatic needle tester ToniSET Compact

Specimen preparation

The most important and maybe themost decisive part for the testing ofbinders is the standard-conforming,reproducible preparation andproduction of specimens. For thisreason, the corresponding devicesand auxiliary means are subject tostrict quality standards regardingaccuracy and user-friendliness.Standard devices for the specimenpreparation are to be found in thecatalogue Global Testing fromToni Technik. Example for aninnovative solution in this field is the

Mortar mixer ToniMIX

The automatic mixing process can beprogrammed in accordance with thespecification of different standards. Itsspecial features are • automatic sand and water supply

facility,• safe mixing guaranteed by a high

precision of the component parts,• clear glass door with safety switch,• standard dust exhaust facility and• specially robust long-life

construction.

Testing of binders

Automatic needle testersToniSET Compact andToniSET Expert

The setting behaviour is a decisive,technological factor for the process-ing of binders and is usuallydetermined manually with the Vicatneedle tester during time-consumingtests.

In the course of the user-orienteddevelopment of building materialswith permanently new special prop-erties, the number of these tests isincreasing constantly and thusbecomes an important economicfactor. The traditional characteristicvalues “begin of setting” and “endof setting” are decisive factors for anextensive evaluation of the settingbehaviour. For the product develop-ment of binders, retarders andaccelerators it is of particularimportance to save time by meansof a fully automatic test perfor-mance. The consequent observanceof defined environmental conditions(temperature, humidity of air) are

further crucial advantages of theautomated measuring method withToniSET. Several specimens aretested fully automatically with bothdevices, optionally at a definedhumidity of air or under water. Theadvantage of the underwater test,which seems to gain more and moreground as alternative method for thestandards (EN and ASTM), is thatthe environmental conditions arereproducible in the best possible way.

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Heat-flow differential calorimeter ToniCAL concrete Automatic Blaine apparatus ToniPERM

Both variants are controlled by aMS Windows-based softwarewhereby individual test intervals maybe selected for each specimen. Thecurrent setting condition of the diffe-rent specimens can be readin the corresponding programwindows at any time. The momentsof time for the beginning, resp.the end of setting are automaticallycalculated in accord. with thespecifications set up aftercomparison measurements.

Heat flow-differential-calorimeter ToniCAL cement,mortar and concrete

All devices are used to determine thesetting heat of hydraulic buildingmaterials. For this purpose, themicroprocessor continuously recordsthe generation of heat (Joule/gram) independence on time. Whereas forToniCAL cement a quantity of 10grams is sufficient due to thehomogeneous, pulverized materials,ToniCAL mortar needs a quantity ofabout70 to 140g and ToniCAL concretefinally works - due to the very coarse-grained and very inhomogeneous

fresh concrete mixture - with aspecimen shape and quantity thatcorresponds to a concrete cylinderwith a diameter of 150 mm and aheight of 300 mm (about 5.3 litres).

Each one of the devices consistsof a control unit with temperaturecontroller, amplifier, temperaturedisplay and processor interface aswell as a separate, heat-insulatedcalorimeter block containing themeasuring cylinders for the materialto be tested and an inert sample, themeasuring chains from a varietyof thermosensors adjacent to thecylinders and a source of heat.ToniCAL cement is additionallyequipped with a device for thesubsequent dosing of additives.

The released hydration heat(Joule/mass x time) can berepresented in tabular form orgraphically as instantaneous orcumulative value either during themeasurement or after the terminationof the test. The high measuringaccuracy and reproducibilityguarantee a safe and reliableevaluation of the generation of heatand of the influence of additives.

Automatic Blaine apparatusToniPERM (Type 6565)

The specific surface according toBlaine is an indirect measure forthe grain size and has a decisiveinfluence on the strength values ofcement. Therefore, an exact, simpleand quick determination is ofdecisive importance already duringthe production process (in thecement mill).

ToniPERM is an automated,microprocessor-controlled Blainedevice and particularly suitable forthe quick determination of operatingcharacteristic values. It consistsof a microprocessor control unit(similar to ToniTROL) and ameasuring tower, optionally withone or two measuring cells.

The powdered material to be testedis compressed to a defined volumein the enlarged measuring cell(according to Dyckerhoff). Afterhaving placed the measuring cell(s)onto the measuring tower and afterhaving entered the test-specificspecimen data, the test is carriedout and evaluated fullyautomatically. The Blaine-value iscalculated out of the single valuesof a preselected number of testsand, if necessary, out of twomeasuring cells.

HOSKIN SCIENTIFIC LTD www.hoskin.ca Vancouver | Burlington | Montreal