Cement and Concrete Instruments

Cement Sampler is a brass tube approximately 53 cm long and 2.8 cm I.D. with a wooden handle. Total length approximately 73 cm.The tube has the sharp angular edge which conveniently pierces cement bags. An air hole of approximately 3mm dia is drilled on the tube near handle. Total sample Collected at one time is 300 cm3 approximately.

Blaine's air permeability apparatus is used for determining the fineness of cement in terms of specific surface expressed as total surface area in square cm/gm of cement. This is a variable flow type air permeameter.

The Vicat Needle Apparatus instrument is used for determining the normal consistency and setting times of cement and 'A' Class limes.

The Le Chatelier Mould is used for the determination of soundness by expansion method of ordinary and rapid hardening portland cement, low heat portland and class A lime.

The Le Chatelier Flask is used for finding specific gravity of hydraulic Cement made from borosil glass.The Flask is 243 mm in total height, having a bulb of 90 mm dia of 250 ml approximate capacity. The long neck of flask has at top a funnel of 50mm dia in which fits a ground glass stopper. The neck has over-all 11 mm I.D. upper portion is graduated from 18 ml to 24 ml with.1 ml graduation. Just At the bottom of the neck 1 ml capacity is marked in between there is 17 ml capacity bulb.

The Gillmore Needle Appartus instrument is used for determing the time setting of hydraulic cement.

Specifications :- A base with a vertical shaft and two horizontal arms. The Lower arm is adjustable for height. 1 No. Intial Needle 1/12 inch dia 1/4 lb.wt. 1No. Final Needle 1/12 inch dia. 1lb.wt. 1 No. Glass base plate.

Specifications and design are subject to change.

The Kelley Ball Penetration Apparatus is used to determine the workabilty of portland cement concrete. The kelly Ball test is considered to be simple and much faster than the slump test. Twice the Kelly Ball reading Approximately equal the Slump.

Vee Bee Consistometer is used for workability as well as consistency of fresh concrete.A slump cone and a graduated rod supplied with the instrument helps the operator to find out slump values and vibration table with container and acrylic disc is used to find out workablity of concete expressed in Vee Bee Degree, which is defined as the time in seconds to complete required vibrating at which the fresh concrete flow out sufficiently to come in contract of the entire face of acrylic disc.

Slump Test Apparatus is used for the determination of the consistency of freshly mixed concrete, where the maximum size of the aggregate does not exceed 38 mm.

Specification and design are subject to change.

Air Entrainment Meter IS : 1199 -1959 as Entrainment of air limited percentage improves durability of concrete and very low percentage deteriorate it, measurement of air entrapped in freshly mixed concrete becomes important.

The Use of chemical additives to increase workablity of concrete often require an air content check to be made. Air Entrainment meter are used to determine air entrained in fresh mixed concrete by pressure method.