Purchase your copy of BS EN as a PDF download or hard copy directly BRITISH STANDARD BS EN Incorporating Amendment No . Free download British Standards: BS EN Pdf standard - Tests for geometrical properties of aggregates - Part 1. Determination of particle size distribution. Standards PDF Cover Page Document preview. Most recent. BS EN Tests for geometrical properties Add to Alert; PDF. Add to Alert. ×. Please first.
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BRITISH STANDARD BS EN Incorporating Amendment No. 1 Tests for geometrical properties of aggregates Part 1: Determination. BS EN (2) - Download as PDF File .pdf), Text File .txt) or read online. BS EN BRITISH STANDARD BS EN Incorporating Amendment No. 1. Tests for geometrical properties of aggregates. Part 1: Determination of particle size.
Space Frontier Foundation. Sieve test on sand. Successfully reported this slideshow. Embed Size px. Nicolas De Nadai. Technical Indexes, Ltd.
As the voice of the U. Document preview. Most recent. Available for Subscriptions. Add to Alert PDF. Please first log in with a verified email before subscribing to alerts. Please first verify your email before subscribing to alerts. Already Subscribed to this document. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. The column comprises a number of sieves fitted together and arranged, from top to bottom, in order of decreasing aperture sizes with the pan and lid.
Experience has shown that washing does not necessarily remove all the fines. It is therefore necessary to incorporate a 63 m test sieve in the series. Shake the column, manually or mechanically, then remove the sieves one by one, commencing with the largest aperture size opening and shake each sieve manually ensuring no material is lost by using, for example, a pan and lid.
Transfer all the material which passes each sieve onto the next sieve in the column before continuing the operation with that sieve.
To avoid overloading of sieves, the fraction retained at the end of the sieving operation on each sieve expressed in grams shall not exceed: If any of the fractions retained exceeds this amount, one of the following procedures shall be used: Carry out the same operation for the sieve immediately below and record the mass retained as R2. Continue with the same operation for all the sieves in the column, in order to obtain the masses of the various lots of retained materials and record these masses as R3, R4, Weigh the screened material, if any, remains in the pan and record its mass as P.
A is the area of the sieve, in square millimetres; d is the aperture size of the sieve, in millimetres.
Calculate the mass retained on each sieve as a percentage of the original dry mass M1. Calculate the cumulative percentage of the original dry mass passing each sieve down to the 63 m sieve exclusive. Calculate the percentage of fines f passing the 63 m sieve in accordance with the following equation: Sieve test on sand.
Each laboratory has prepared using a riffle box and successively tested two different masses of samples, g and 30g. For any sieve size of the basic set comprised between 0, and 4mm, the precision values can be stated as follows: It is highlighted that precision is highly dependent on the loading of individual sieves, overloaded sieves loading to degraded precision data and lightly loaded sieves leading to better precision data. M1 is the dried mass of the test portion, in kilograms; M2 is the dried mass of the residue retained on the 63 m sieve, in kilograms; P is the mass of the screened material remaining in the pan, in kilograms.
Sieves of square aperture mm 3. The other test portion shall be tested by the washing and sieving method without pre-drying. The initial dry mass of this second test portion shall be calculated on the assumption that the duplicate test portions have identical moisture contents and recorded as M1'. Particle size distribution — Sieving method: EN Laboratory: Identification of the sample Date: Method used: It presents the UK view on standards in Europe and at the international level.
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