It is used to measure the drying shrinkage of concrete autoclave expansion of port land cement and potential expansive reactivity of cement aggregate combinations in mortar bars during storage, on self drying.
- Specifications : The instrument consists of a channelled base over which two vertical pillars are fixed. An adjustable cross plate is at the top. A dial gauge, reading to 0.002mm x 12mm. can be fixed to the top cross plate. The plunger end of the dial gauge can be located upon a 6.5mm. dia 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 6.5mm dia. balls mounted in the ends.
The unit can be supplied with a 0.0001 inch x 1/2 inch dial gauge at extra cost