German

Schleibinger Testing Systems

You are here:  Home > Shrinkage > Shrinkage-Cone
top
Page
Menu
News

Shrinkage-Cone

New Design with a double wall metall vessel for easy heating and cooling with an external liquid temperature control unit!

A LASER Beam Measures the very early Shrinkage and Expansion of Building Materials. Touchless and with 1 Mikron Resolution

With Schleibingers patented innovation the Schleibinger Shrinkage Cone deltaEL it is possible to measure the shrinkage or expansion of fluid building materials in the first minutes and hours after start of mixing. The expansion of the building material is registered touch-less and very exact by a laser beam. There is no mechanical coupling between the fluid and the sensor necessary.

To ensure that the measured distance correlates with the relative length change of the material we use a special formed specimen container.

The length change is registered with a resolution of 1/10 mikron. The measurement values are digitized and stored by the software delivered with the system. Synchronous with the length change , temperature, rel. humidity may be stored by the software.

 

 

Measurement Procedure

  • Fill the fluid building material (2) into the cone formed specimen container (1)

  • The container is set under the laser unit (3), which is mounted on a high performance boom stand.

  • With a rack and pinion the distance is preset to about . 0 µm .

  • The automatic offset adjust is done by a mouse click on your PC (5).

  • An autonomous data logger will register your data for several weeks on an integrated CF-card memory

  • The data-logger has a network interface. You can easily readout the data, with any browser software like Internet-Explorer or Firefox

  • Look at a small video to see how it works...

Function Principle

shrinkage cone measurement principle

For a angle of 60° the Volume V = 1/9 * pi * h³ . With h = 100mm V = 349 cm3

 

Example Measurement

The following graphic shows different cements, with different finenessexample measurement shrinkage cone


Literature

C. Mueller and S. Eppers

Creep, Shrinkage and Durability Mechanics of Concrete and Concrete Structures, Two Volume Set. Dec 2008 , 709 -714

Effect of the addition of ultrafine cement and short fiber reinforcement on shrinkage, rheological and mechanical properties of Portland cement pastes,
J. Kaufmann, F. Winnefeld, D. Hesselbarth,
Cement and Concrete Composites, Volume 26, Issue 5, July 2004, Pages 541-549, ISSN 0958-9465, http://dx.doi.org/10.1016/S0958-9465(03)00070-2.
(http://www.sciencedirect.com/science/article/pii/S0958946503000702)

Optimization of Self-Consolidating Pastes Containing Limestone Powder and Chemical Admixtures
J. Kwasny, M. Sonebi, and P.A.M. Basheer
Special Publication

Appliance for detecting initial expansion and shrinkage behavior of building materials based on contactless measurement of change in filling level of container of fresh material specimens until set  
M. Greim, O. Teubert
Patent DE 10046284

Sören Eppers
Assessing the autogenous shrinkage cracking propensity of concrete by means of the restrained ring test
Die Bewertung der autogenen Schwindrissneigung von Beton mit Hilfe des Ring-Tests

Sören Eppers, Ph.D thesis, TU Dresden, 2010

Technical Data

 

Measurement Range

5 mm

Basic Distance

25 mm

Resolution

0.1 µm

Diameter of Laser Spot

0,8 mm

Volume / height mortar cone vessel

349 cm³ / 100 mm

Volume / height concrete cone vessel 682 cm³ / 125 mm

Laser Power

< 1 mW at 670 nm Class 2 according to DIN EN 60825-1:2008-05 and IEC 60825-1:2007

Other measurement ranges also available. Recommended computer for readout the data logger: PC, one network port, Win XP...Windows 10, Linux, OS X, Android. Installed Internet Browser Firefox, Chrome , Opera or Edge 2016 and younger. Technical data maybe changed without notification, DBPa .

Data Sheet

Video

User Manual

« prev top next »
top
Page
Menu
News

New Product Catalog

We have updated our product catalog, now including the SLIPER, the ASTM Shrinkage Ring and the new Vane System for the Viskomat XL. Please download it here!

 

 

top
Page
Menu
News
top
Page
Menu
News

Powered by CMSimple | Template: ge-webdesign.de | Login