BS 812-105.2:1990 - Testing aggregates. Methods for determination of particle shape. Elongation index of coarse aggregate – BSI British Standards

BS 812-105.2:1990

Testing aggregates. Methods for determination of particle shape. Elongation index of coarse aggregate

Status : Withdrawn   Published : June 1990

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This British Standard, a part of the BS 812 series, describes the method for determining the elongation index of coarse aggregate.

Aggregate particles are classified as elongated when they have a length (greatest dimension) of more than 1.8 of their mean sieve size, this size being taken as the mean of the limiting sieve apertures used for determining the size fraction in which the particle occurs. The elongation index is found by separating the elongated particles and expressing their mass as a percentage of the mass of sample tested. The test is not applicable to material passing a 6.30 mm test sieve or retained on a 50.0 mm test sieve.




Standard NumberBS 812-105.2:1990
TitleTesting aggregates. Methods for determination of particle shape. Elongation index of coarse aggregate
StatusWithdrawn
Publication Date30 June 1990
Confirm Date15 May 2000
Withdrawn Date19 June 2014
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
ReplacesBS 812-1:1975
Draft Superseded By86/10160 DC
DescriptorsAggregates, Cement and concrete technology, Coarse aggregates, Particle size distribution, Particle size measurement, Screening (sizing), Test equipment, Dimensions, Specimen preparation, Test specimens, Mass, Length
ICS91.100.15
Title in FrenchEssais des granulats. Methode pour determiner la forme des particules. Indice d'elongation des gros granulats
Title in GermanPruefung von Zuschlagstoffen. Methoden zur Bestimmung der Teilchenform. Hoehen- zu Breitenindex grober Zuschlagstoffe
CommitteeB/502/6
ISBN0 580 18351 3
PublisherBSI
FormatA4
DeliveryNo
Pages10
File Size313.6 KB
NotesThis standard is withdrawn as it is no longer relevant
Price£110.00


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