BS 812-109:1990 - Testing aggregates. Methods for determination of moisture content – BSI British Standards

BS 812-109:1990

Testing aggregates. Methods for determination of moisture content

Status : Confirmed, Current   Published : June 1990



This British Standard, a part of the BS 812 series, describes the following three methods for the determination of the moisture content of aggregates:

a) oven-drying method (definitive method)

b) high temperature method

c) microwave-oven method for fine aggregate only.

In the case of the definitive, oven-drying method for the determination of the moisture content, only editorial changes have been made to the procedure described in the previous edition of the standard. However, in the case of the subsidiary methods, although the modified drying method has been retained under the title of the high temperature method, the siphon-can and buoyancy methods have been omitted as they are rarely used. In their place methods based respectively on the use of a microwave oven and on the reaction of water in the aggregate with calcium carbide have been introduced. These tests are of more limited application than the oven-drying method but are easier to carry out and provide rapid results.

This British Standard also describes the calcium carbide method in appendix A.

Standard NumberBS 812-109:1990
TitleTesting aggregates. Methods for determination of moisture content
StatusConfirmed, Current
Publication Date29 June 1990
Confirm Date01 June 2016
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 812-2:1975
Draft Superseded By84/14033 DC
DescriptorsAggregates, Cement and concrete technology, Moisture measurement, Water content determination, Specimen preparation, Testing conditions, Reproducibility, Fine aggregates, Dry weight determination
Title in FrenchEssais des granulats. Methode pour determiner le degre d'humidite.
Title in GermanPrufung von Zuschlagstoffen. Bestimmung des Feuchtigkeitsgehalts
ISBN0 580 18851 5
File Size320.3 KB
NotesStandard reinstated as current. It will be withdrawn in 2004.

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