Discy Latest Articles

Bulking of Sand – Cause, Tests and Importance

Bulking of Sand – Cause, Tests and Importance

Bulking of fine aggregate or sand is the phenomenon of increase in sand volume due to the increase of moisture content. Bulking test on fine aggregates has to be performed before using it in construction. This article describes the procedure and ...

BULK DENSITY AND PERCENTAGE VOIDS OF AGGREGATES

BULK DENSITY AND PERCENTAGE VOIDS OF AGGREGATES

Aim To determine the bulk density and percentage voids of aggregate . Apparatus (I)Balance -A balance sensitive to 0.5% of the weight of the sample to be weighed . (ii) Cylindrical Metal Measure- The measure shall be of 3,15 or 30 liters capacity ...

Determination of Specific Gravity of Fine Aggregates

Determination of Specific Gravity of Fine Aggregates

Specific gravity of fine aggregate (sand)  is the ratio of the weight of given volume of aggregates to the weight of equal volume of water. The specific gravity of sands is considered to be around 2.65. Apparatus for Specific Gravity TestA balance ...

Aggregate Crushing Value Test – Determine Aggregate Crushing Strength

Aggregate Crushing Value Test – Determine Aggregate Crushing Strength

Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load. Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected ...

Earthquake Zones in India

Earthquake Zones in India

India being a large landmass is particularly prone to earthquakes. The Indian subcontinent is divided into five seismic zones with respect to the severity of the earthquakes. The classification of the zones has been done by the geologist and scientist as ...