CEN Standard sand (ISO standard sand) is a natural sand, which is siliceous sand consisting preferably of rounded particles and has a silica content of atleast 98% , particularly its finest fractions .It is dried, screened and prepared in a modern workshop which offers every guarantee in terms of quality and consistency.
The sand is packaged in polyethylene bags (Standing Pouch) each containing 1.350 grams.
Deliveries are made in boxes of 10 bags weighing 13.5 kg and suitably protected by a polyethylene cover.
2- Particle Size Distribution
The grading, measured by sieving, complies with the requirements of EN 196-1:2005 and ISO 679 : 2009 ( E ) .
Square mesh Size (mm)
Cumulative sieve residue(%)
|1.60||7 + 5|
|1.00||33 + 5|
|0.50||67 + 5|
|0.16||87 + 5|
|0.08||99 + 1|
This analysis is complemented by bag mass controls, water content controls and strength controls, in accordance with EN 196-1:2005 and ISO 679 : 2009 ( E ).
|control the strength of cement : |
Standard sand is used to control the strength of cement and other hydraulic binders : The methods of testing cement strength requires the use of standard sand and reference sand. They are used to measure resistance to compression of test pieces of mortar.