Application:
- To measure length change in hardened cement paste, mortar and concrete, using a suitable micrometer.
Apparatus Details:
- The instrument consists of channeled base, over which two vertical pillars are fixed.
- The vertical pillars are threaded for adjustment.
- An adjustable cross plate is at the top.
- A DIGITAL dial gauge, reading to 0.001 mm x 10 mm is fixed to the top.
- The plunger end of the dial Gauge can be located on a 6 mm diameter ball or other reference point cemented in the specimen.
- On the base there is a similar recessed seating, in which, can be placed a second ball or reference point in the specimen.
- Complete with a stainless steel standardization bar with insulated grip and with 6.00 mm diameter ball mounted in the ends. (ASTM C490: Ball diameter: 6.35 mm (0.25 inches).