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.