BS DD218(1995) : 1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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TESTING AGGREGATES. METHOD FOR DETERMINATION OF ALKALI-SILICA REACTIVITY. CONCRETE PRISM METHOD
Hardcopy , PDF
English
01-01-1995
15-06-1999
Committees responsible
Foreword
1 Scope
2 References
3 Definitions
4 Principle
5 Sampling
6 Apparatus
7 Materials
8 Preparation of aggregate test portions
9 Mix design
10 Temperature and humidity conditions
11 Preparation of test prisms
12 Storage and measurement
13 Calculation and expression of results
14 Precision
15 Test report
Annexes
A (informative) Procedure for checking the uniformity
of the temperature within the room or cabinet used
for storing the test prisms at (38 + or - 2) deg C
B (informative) Proforma for calculating batch
weights
C (informative) Precision
Tables
1 Mix proportions by volume for cement and dry
aggregates
2 Temperature and humidity requirements
B.1 Proforma for calculating batch weights for a
7-litre concrete mix from volume proportions
C.1 Precision of the determination of the expansion of
concrete prisms
Figures
1 Example of stainless steel reference stud
2 Example of reference stud providing hemispherical
bearing
3 Example of length comparator
4 Container to provide humid environment around
concrete prism
List of references
Describes a method of measuring the expansion of concrete produced by alkali silica reaction involving specific combinations of aggregates. Coverage includes: apparatus, mix design, materials, precision, and preparation of aggregate test portions. Also gives definitions, tables, diagrams and annexes.
| Committee |
B/502
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
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