Abstract： AS 1012.8.4:2015 pdf download.Methods of testing concrete Method 8.4: Method for making and curing concrete-Drying shrinkage specimens prepared in the field or in the laboratory. 4 APPARATUS The following apparatus shall be used. 4.1.1 Gene...

AS 1012.8.4:2015 pdf download.Methods of testing concrete Method 8.4: Method for making and curing concrete-Drying shrinkage

specimens prepared in the field or in the laboratory.

4 APPARATUS

The following apparatus shall be used.

4.1.1 General

Moulds shall be made of non-absorbent material which does not react with cement paste and their internal surfaces shall have a

smooth finish. The moulds shall be substantial enough to hold their form without distortion and shall be substantially leak-proof

Each mould shall be provided with a base plate to which two end plates are securely fastened by screws, two side plates which are

fastened to the end plates by screws, and two partially loose end plates which act as gauge stud holders. Each gauge stud holder

shall fit inside the end of the mould and shall locate and secure a gauge stud during the setting period of the concrete. Each

gauge stud holder shall be held in position against the end plate by a retaining screw and shall he capable of release after

compaction of the concrete. The opposite side plates shall he parallel and the distance between them shall be 75 ±1 mm. The inside height shall be 75 ±1 mm.

4.1.2 Construction of the mould

The construction of the mould shall be aligned coaxially along the central axis of the moulded specimen, v ith the distance between the inner ends of the two studs being 250 ±0.5 mm, and that between the outer ends 295 ±1 mm. Gauge studs shall protrude from the gauge stud holders to a distance of 15 ±1 mm. A suitable form of construction of the moulds is shown in Figure 1.

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