Manufactured By: Schleibinger Gerate

Thin-Layer Shrinkage Laser System

The Schleibinger Thin-Layer Shrinkage Laser Measurement System is designed for measuring the shrinkage of thin layers of compounds.

Some building materials like self-levelling flooring compounds or plasters are applied in thin layers. These fast setting mortars set and harden within a couple of hours and subsequent drying of such a thin layer is generally terminated after the first day. In order to investigate the dynamics of early shrinkage and expansion a special set-up consisting of two laser units horizontally aligned are employed. This set-up allows investigation of the different formulation parameters and their influences on the different stages of shrinkage and expansion, namely the plastic shrinkage, setting expansion and drying shrinkage. The shrinkage/expansion behaviour is strongly related to both, external (climate) and internal (formulation) factors. With respect to the latter, begin, intensity and duration of setting are key to the overall shrinkage/expansion behaviour.

With building materials applied in thin layers shrinkages one of the major issues because of two reasons:

(1) The high surface-volume ratio causes evaporation to be a dominant mechanism for strong and fast physical shrinkage, and
(2) The intense hydration reactions can cause a pronounced chemical shrinkage, or in case of ettringite formation a strong expansion.

Additional Product Information:

Item Size Download
Product Brochure 167kb Download
Product Specifications 174kb Download

To download and view these attachments you must have Acrobat Reader. If you do not have Acrobat Reader, click the “Get Adobe Reader” button.