Concrete is a composite construction material made primarily from aggregate, cement, and water. There are many formulations of concrete that provide various properties. Concrete is the most widely used man-made product in the world as the main building material within architectural structures, foundations, brick/block walls, pavements, bridges/overpasses, motorways/roads, runways, parking structures, dams, pools/reservoirs, pipes, footings for gates, fences, poles and even boats.
Concrete, a composite mixture of water, aggregates, cement and sometimes additives, is the most commonly employed man-made building material in construction projects. The quality of concrete is crucial if structures are to be safe and serve the purpose for which they were designed. Consequently, the testing of fresh, hardened and in-situ concrete is vital to ensure that concrete structures comply with specifications and relevant standards.

Cement is the binder used to create concrete and mortar. Inorganic binders have had a role in the construction industry since pre-classical times and, after successive transformations, are today briefly classified as cements, limes and plasters. These binders, as well as being used singularly are often mixed in order to produce an end product, which meets the technical characteristics of the user. Today, the various types of binders are well known, particularly cements, and they are becoming ever more sophisticated with pre-mixed cements designed to satisfy specific structural requirements.

Aggregates are fundamental materials that are used in all areas of construction industry such as concrete, mortars, bituminous mixtures, surface treatments for roads, airfields and other trafficked areas, railway ballast, unbound and hydraulic bound mixtures in civil engineering works and road constructions, which comprise our modern world as buildings, highways, dams, railways etc. Thus it is crucial to determine the properties of aggregates according to related EN, ASTM, AASTHO, BS standards.

Shrinkage limit is the maximum water content at which a reduction in water content does not cause an appreciable reduction in volume of the Soil Mass. At shrinkage limit, on further reduction in water, air enters in to the voids of soils and thus keeps the volume constant. The apparatus can be used to determine shrinkage limit and to calculate other shrinkage ratio, shrinkage index and volumetric shrinkage.

Specifications:

• Porcelain evaporating dish,
• Shrinkage dish
• Glass cup
• Perspex plate with three metal prongs
• Flexible spatula 100mm
• Glass cylinder
• 25ml x 1ml, supplied without mercury

The machine is used to determine the resistance of aggregate to wear by abrasion.

Specifications : It consists of two hollow cylinders closed at one end and provided with tight fitting covers at the either end. These cylinders are mounted on a shaft at an angle of 30 degrees with the axis of rotation of the shaft. The shaft rotates at 30-33 r.p.m. through a reduction gear operated by a motor and is provided with a revolution counter. Complete with abrassive charges consisting of 12 Nos. Hardened steel ball of 48mm dia. Suitable for operation on 440 volts, 3 phases, 50 cycles. A.C.supply

Concrete is a composite construction material made primarily from aggregate, cement, and water. There are many formulations of concrete that provide various properties. Concrete is the most widely used man-made product in the world as the main building material within architectural structures, foundations, brick/block walls, pavements, bridges/overpasses, motorways/roads, runways, parking structures, dams, pools/reservoirs, pipes, footings for gates, fences, poles and even boats.
Concrete, a composite mixture of water, aggregates, cement and sometimes additives, is the most commonly employed man-made building material in construction projects. The quality of concrete is crucial if structures are to be safe and serve the purpose for which they were designed. Consequently, the testing of fresh, hardened and in-situ concrete is vital to ensure that concrete structures comply with specifications and relevant standards.

Cement is the binder used to create concrete and mortar. Inorganic binders have had a role in the construction industry since pre-classical times and, after successive transformations, are today briefly classified as cements, limes and plasters. These binders, as well as being used singularly are often mixed in order to produce an end product, which meets the technical characteristics of the user. Today, the various types of binders are well known, particularly cements, and they are becoming ever more sophisticated with pre-mixed cements designed to satisfy specific structural requirements.

Aggregates are fundamental materials that are used in all areas of construction industry such as concrete, mortars, bituminous mixtures, surface treatments for roads, airfields and other trafficked areas, railway ballast, unbound and hydraulic bound mixtures in civil engineering works and road constructions, which comprise our modern world as buildings, highways, dams, railways etc. Thus it is crucial to determine the properties of aggregates according to related EN, ASTM, AASTHO, BS standards.

Shrinkage limit is the maximum water content at which a reduction in water content does not cause an appreciable reduction in volume of the Soil Mass. At shrinkage limit, on further reduction in water, air enters in to the voids of soils and thus keeps the volume constant. The apparatus can be used to determine shrinkage limit and to calculate other shrinkage ratio, shrinkage index and volumetric shrinkage.

Specifications:

• Porcelain evaporating dish,
• Shrinkage dish
• Glass cup
• Perspex plate with three metal prongs
• Flexible spatula 100mm
• Glass cylinder
• 25ml x 1ml, supplied without mercury

The machine is used to determine the resistance of aggregate to wear by abrasion.

Specifications : It consists of two hollow cylinders closed at one end and provided with tight fitting covers at the either end. These cylinders are mounted on a shaft at an angle of 30 degrees with the axis of rotation of the shaft. The shaft rotates at 30-33 r.p.m. through a reduction gear operated by a motor and is provided with a revolution counter. Complete with abrassive charges consisting of 12 Nos. Hardened steel ball of 48mm dia. Suitable for operation on 440 volts, 3 phases, 50 cycles. A.C.supply