ASTM C331/C331M-14 - 15.4.2014
 
1. Scope

1.1 This specification covers lightweight aggregates intended for use in concrete masonry units when a prime consideration is to reduce the density of the units.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Some values have only SI units because the inch-pound equivalents are not used in practice.

Note 1—Sieve size is identified by its standard designation in Specification E11. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size.

1.3 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

 
2. Referenced Documents

E11-24

Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves

D75-03

Standard Practice for Sampling Aggregates

C1262-10

Standard Test Method for Evaluating the Freeze-Thaw Durability of Dry-Cast Segmental Retaining Wall Units and Related Concrete Units

C702-98

Standard Practice for Reducing Samples of Aggregate to Testing Size

C641-23

Standard Test Method for Iron Staining Materials in Lightweight Concrete Aggregates

C157/C157M-24e1

Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete (Includes all amendments and changes 10/14/2024).

C151-05

Standard Test Method for Autoclave Expansion of Hydraulic Cement

C142-97

Standard Test Method for Clay Lumps and Friable Particles in Aggregates

C136-06

Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

C114-24

Standard Test Methods for Chemical Analysis of Hydraulic Cement

C29/C29M-23

Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate

C40-04

Standard Test Method for Organic Impurities in Fine Aggregates for Concrete