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AASHTO M 318
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AASHTO M 318 2002 Edition, January 1, 2002 Standard Specification for Glass Cullet Use for Soil-Aggregate Base Course
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Description / Abstract:
This specification covers processed glass cullet intended for
use as a granular road base material. When properly processed and
mixed with natural or crushed aggregate, hauled to and properly
spread and compacted on a prepared grade to appropriate density
standards, glass cullet can be expected to provide adequate
stability and load support for use as road or highway bases.
Material described in this specification is not intended to be used
in treated or stabilized pavement layers. This specification is
intended for use in conjunction with M 147 or with the requirements
of the local jurisdiction specifying the properties of natural or
crushed aggregate used in the base course. It is not intended for
use in base courses in locations where surfacing will not be placed
over the base.
Note 1—The engineer is advised to provide appropriate construction specifications to ensure that sufficient compaction is achieved so that further densification of the completed pavement from traffic loadings will be insignificant. The method requires compaction of the material at a suitable moisture content on a firm foundation of a short control strip by means of vibratory or other proven effective rollers or tampers, until no further increase in density results. Compaction requirements should ensure that the average density of the final base course is an appropriate percentage of the maximum density obtained for the control strip; for base courses, achieving on average 98 percent of the maximum control strip density is suggested.
The values stated in SI units are to be regarded as the standard. The English unit equivalents shown in parentheses may be appropriate, except with regard to sieve sizes and aggregate size as determined by the use of testing sieves, in which case the standard SI designation shown is the standard as required by M 92.
Note 1—The engineer is advised to provide appropriate construction specifications to ensure that sufficient compaction is achieved so that further densification of the completed pavement from traffic loadings will be insignificant. The method requires compaction of the material at a suitable moisture content on a firm foundation of a short control strip by means of vibratory or other proven effective rollers or tampers, until no further increase in density results. Compaction requirements should ensure that the average density of the final base course is an appropriate percentage of the maximum density obtained for the control strip; for base courses, achieving on average 98 percent of the maximum control strip density is suggested.
The values stated in SI units are to be regarded as the standard. The English unit equivalents shown in parentheses may be appropriate, except with regard to sieve sizes and aggregate size as determined by the use of testing sieves, in which case the standard SI designation shown is the standard as required by M 92.