ASTM D195 − 27 Specification for Crushed Stone and Crushed Slag for Bituminous Macadam Base and Surface Courses of Pavements (Withdrawn 1938)

BROKEN • STANDARD SPECIFICATIONS BASE1

FOR

SLAG FOR BITUMINOUS MACADAM

· Serial Designation : D 195 - 27

These spcciftcations arc issued under the fi xed designation D 19S; the li nn\

number indicates the yenr of original adoption as sLandar<;l or, in the case of rcvi!lion,

the ycnr of last reviliion. · ·

IssUED AS TENTATIVE, 1924; ADOPTI!.D1 1927.

1. These specifications cover { to ll-in., 1~; to 2}-in., and 2~ to Scope.
3~-in. size broken slag to be used in the construction of a. bituminous

macadam base in which the bituminous material is applied by the

penl!tmtion method and which is to be covered with any type of

surface course.

The 2~- to 3~-in. size is intended for use as a first course, which

will !Je penetrated with bituminous material, when a base of over

3~· in. is dt'.sirerl.

The J!· to 2~-in. size is intended for use as a second cour:-.c which

is to be penetrated with bituminous material.

The ~ to I ~- -in. size is intended to fill the surface voids when a

sheet asphalt or a fine-graded bituminous concrete is to ue placed

directly upon it. This ma terial can be omitted when a coarse-graded

bituminous concrete or a binder course is to bt: laid directly upon

the base.

2. The broken slag shall be air-cooled blast-furnace slag and General
shall consist of angular fragments reasonably uniform in density ~ht.aracter­
and quality, and reasonably free from thin, elongated or glassy " ItS.

pieces, dirt or other objectionable matter.

3. The weight per cubic foot of each size specified shall not he Weight.

less than 6.'5 lb.

4. The coarse slag when tested by means of laboratory screens 21 to 3!-in.

shall conform to the following requirements: ~t~o 2!-in.

(a) Passin~ 34-in. screen... . . .......... ... not Jess than 95 per c:enL Size,

Total passing 2!-in. scrcr.n............ •notmoretbnn 15 "

(b) Passing 2t-in. screen . . ................ not less tban 95 per cent

- - - - - Total passing ll-in. screen........ . . . ..not more than 15 "
1 Under W11o standatditation pr~ure of the Society, these specifical.iuns arc•under the iurisdic ·
tion ullhc A.S.1'. M. Comm itt~e D-• on Ro" d And PAvin~rJMnterials.
-

(455)

456 SPECIFICATIONS FOR SLAG FOR MACADAM BASE

! to 1!-in. 5. The intermediate size slag when tested by means of labora-
tory screens shall conform to the following requirements:
Size.

Passing 1!-in. screen . . . . . . . . . . . . . . . . . . . . . . not less than 95 per cent

Passing l-in. screen...... . . . . . . . . . . . . . . . . . 25 to 75 "

Passing !-in. screen ....................... not more than 15

Methods of 6. Weight per Cubic Foot.-The weight per cubic foot shall be
Testing. determined in accordance with the Standard Method of Test for
Unit Weight of Aggregate for Concrete (Serial Designation: C 29)
Sampling. of the American Society for Testing Materials.!

7. The method of sampling shall conform to the Standard Methods
of Sampling Stone, Slag, Gravel, Sand and Stone Block for Use as

Highway Materials, Including Some Material Survey Methods
(Serial Designation: D 75) of the American Society for Testing
Materials. 2

NoTE.-The test values for quality of slag incorporated in these specifications
are suggested as the lowest safe requirements. It is not expected, however, that
the limits for size and quality will be applicable to all conditions.

1 Seep. 120.
'Seep. 473.