STANDARD FORM OF SPECIFICATIONS FOR CERTAIN COMMERCIAL GRADES OF BROKEN STONE.. The broken stone shall consist of one product of the opera-tion of a stone-crushing and screening plant wi
Trang 1AMERICAN SOCIETY FOR TESTING MATERIALS
PHILADELPHIA, PA., U S A
~FILIATED WITH THE
!NTERNAT:::ONAL AssociATION FOR TEsTING MATEJUAU!
STANDARD FORM
OF SPECIFICATIONS FOR CERTAIN COMMERCIAL
GRADES OF BROKEN STONE
Serial Designation: D 35 - 18
This form of specifications is issued ttnder the fixed designation D 35; the final number indicates the year of original adoption as standard, or in the case of revision, the year of bst revision '
PROPOSED AS TE:-!TATIVE, 1916; ADOPTED, 1918
The broken stone shall consist of one product of the opera-tion of a stone-crushing and screening plant without recom-bining or mixing, and shall conform to the following mechanical analysis using laboratory screens:
Passing screen having smallest boles selected From to per cent Passing screen having next to largest holes selected From to " Passing screen having largest holes selected From to
Total passing screen having largest boles sel~cted 100
of a stone-cmshing and screening plant without recombining or mixing, and shall conform to the following mechanical analysis using laboratory screens: Passing 1-in screen ; 3 to 10 per cent Passing l-in screen and retained on !-in screen 80 to 95 " Passing 11 in screen and retained on l-in screen ,.,, 2 to 10
Total passing f~-in screen 100 "
or the analysis may be expressed as follows:
Total passing 1-in screen
Total passing l-in " .•
Total passing 1 !-in " .••
(668)
3 to 10 per cent
90 to 98 "
100