Designed for evaluating the height change of hydraulic-cement grout cylinders in hardened condition, providing accurate measurement of volumetric stability according to internationally accepted testing practice.
Utilizes a rigid micrometer bridge frame that establishes a fixed reference position over the specimen, enabling repeatable, high-precision height readings throughout the curing period without disturbing the sample.
Equipped with a precision depth micrometer capable of detecting very small vertical movements of the grout surface, ensuring exact monitoring of expansion or shrinkage as the material hydrates.
Features a tapered steel cylinder mold specifically configured for grout testing, ensuring uniform confinement, proper compaction, and consistent specimen geometry in accordance with recognized grout testing procedures.
A smooth, ground glass plate is placed over the fresh grout to form a sealed and level upper surface, minimizing moisture loss and external interference while promoting reliable contact for initial reference readings.
A controlled hold-down weight applies uniform pressure on the glass plate during the early hours of setting, providing stable restraint and allowing the grout to develop under conditions representative of practical application.
