Welcome to SPTC LLC, Georgia - Construction Materials Testing and Engineering for the Caucasus!
Aggregates constitute some 80-85% of concrete by volume. Not only do aggregates form the rigid skeleton of the concrete, but they also influence the performance of the concrete. Consequently, establishing the characteristics of aggregates is extremely important. In our Tbilisi based laboratories, we have all the requisite equipment to undertake all the standard tests from the friable particles test, to the LA abrasion test.
|Crushed Stone and Gravel.||ГОСТ 8269||Crushed stone and gravel, made from solid rocks, for construction works (Specifications).|
|Sand for Construction Work.||ГОСТ 8735||Test methods for sand, for construction works.|
|Aggregates for Concrete.||EN 12620 (formerly BS 882)||Specifies the properties of aggregates and filler aggregates obtained by processing natural, manufactured or recycled materials and mixtures of these aggregates for use in concrete.|
|Crushed and broken surfaces.||EN 933-5||Tests for geometrical properties of aggregates - Part 5: Determination of percentage of crushed and broken surfaces in coarse aggregate particles.|
|Friable Particles.||ASTM C142||Standard Test Method for Clay Lumps and Friable Particles in Aggregates.|
|Loose bulk density and voids.||EN 1097-3||Tests for mechanical and physical properties of aggregates. Determination of loose bulk density and voids.|
|Los Angeles.||ASTM C131||Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine.|
|Los Angeles.||EN 1097-2||Tests for mechanical and physical properties of aggregates. Methods for the determination of resistance to fragmentation.|
|Organic Impurities.||ASTM C40||Standard Test Method for Organic Impurities in Fine Aggregates for Concrete.|
|Particle size distribution (PSD) - Sieving.||ASTM C136||Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates.|
|Shape index.||EN 933-4||Tests for geometrical properties of aggregates - Part 4: Determination of particle shape - Shape index.|