IS 1199-1959, IS 4031 1968 BS 1881, ASTM C 151, C490
It is used to measure the dying shrinkage of concrete autoclave
expansion of Portland cement and potential expansive reactivity of
cement aggregate combinations in mortar bars during storage, on
self drying.
Specification :
The instrument consists of a channeled
base over which two vertical pillars are fixed. An adjustable cross
plate is at the top. A dial gauge, reading to .002mm x 12mm. Can be
located upon a 6.5mm. dia ball or other reference point cemented in
the specimen. On the base there is 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 an Electronic Dial Gauge at extra cost if indicated at
the time of placing the order.