AS PER IS: 1199 - 1959 and 4031 - 1968.


Introduction: It is used to measure the drying shrinkage of concrete autoclave expansion of Portland cement and potential expansive reactivity of cement aggregate combinations in mortar bars during storage, on self drying.


General Description and 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 0.002mm x 12mm can be fixed to the top cross’s 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 .0001 inch x ½ inch dial gauge at extra cost if indicated at the time of placing the order.


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