Used for determination of slump of fresh concrete mix as a measure of its consistency where the nominal size of aggregate does not exceed 38 mm.
It comprises the following :-
Used for estimation of consistency of concrete mix by determination of the time required for transforming sample of fresh concrete in the form of a frustum of a cone into a cylinder by standard vibration.
The apparatus consists of the following: –
Used for estimation of workability of portland cement concrete in terms of depth of penetration of a hemispherical metal weight into the plastic concrete. Double of Kelly Ball reading indicates approximately the slump of the concrete tested.
The apparatus consists of the following :-
Used for determination of compaction factor of fresh concrete with nominal maximum size of aggregate not exceeding 40 mm as a measure of its workability. It is particularly suitable for mix of stiffer consistency.
It comprises the following :
It is a versatile quick and handy instrument for evaluation of ‘Initial Set’ of concrete mortar both in the laboratory as well as in the field.
The instrument consists of a barrel and sleeve enclosing a calibrated spring. The barrel is graduated from 0 to 50 kg/sq cm and carries a friction ring which acts as a cursor. The penetration needle of 0.3 sq. cm sectional area, is an integral part of the barrel and is marked at 25 mm from the end.
In operation the plunger is pushed into the concrete mortar upto the marked line and the penetration resistance offered by the concrete mortar is directly indicated on the barrel in kg/sq.cm. The ‘INITIAL SET” is considered to have been reached when the penetration resistance offered by the mortar is 35 kg/sq.cm.
Supplied complete in a carrying case.
It is used for determination of rate of hardening of mortar sieved from concrete mixtures and estimation of the effects of such variables like temperature, cement content, mix proportion and admixtures etc on the setting time and hardening characteristics of concrete. The equipment comprises the following :
Used for the determination of consistency of masonry mortar. It consists of the following:-