Autogenous shrinkage tester

Auto-Shrink AS-1000 Kit Digital Dilatometer for Autogenous Shrinkage Measurement The Auto-Shrink AS-1000 is a precision digital dilatometer for measuring unrestrained autogenous shrinkage in cement paste and mortar specimens cured under sealed conditions. A corrugated plastic mould prevents moisture loss while allowing the specimen to shrink freely—isolating true autogenous deformation from drying shrinkage. Key Features Invar steel construction – Support frame and reference bar made from Invar, a low thermal expansion alloy, ensuring dimensional stability at room temperature High-precision digital gauge – 0.001 mm resolution with large rotating LCD display Long-term monitoring – Measure time-dependent deformation over weeks, months, or years Multi-specimen capability – Monitor multiple specimens simultaneously Optional data logging – Connect to PC via USB for automatic recording across multiple dilatometers Applications Quality control of low-shrinkage mortars, grouts, and concrete mixtures Research and development of cement-based materials Assessment of autogenous shrinkage as a cause of microcracking Long-term deformation studies for durability research Specifications Parameter Value Measuring range 12.7 mm Resolution 0.001 mm Accuracy (20°C) 0.003 mm Repeatability (20°C) 0.002 mm Stem 8 mm with 1.5 mm carbide-tipped spherical tip Battery life ~7,000 hours continuous use Operating temperature 0–40°C Storage temperature 0–60°C Kit Includes Item Order Code Dilatometer support frame with stop pin AS-1100 Digital displacement gauge with lifting cable remote AS-1110 Reference bar AS-1120 Spanner 17 mm AS-1130 Hex key 2.5 mm AS-1140 Support tube for casting AS-1170 Grooved support rack for 10 specimens (set of 5) AS-1180 Optional Data Logging Item Order Code USB input cable AS-1200 ITPak software with USB dongle AS-1210 Consumables Item Order Code Corrugated tubes (set of 50) AS-1150 Sealing plugs (set of 100) AS-1160 Standards ASTM C1698 – Standard Test Method for Autogenous Strain of Cement Paste and Mortar.