a These specifications cover the materials for asphalt mastic suitable for use in waterproofing, consisting of mastic cake, asphalt cement and mineral aggregate.. b The grade of asphal
Trang 1STANDARD SPECIFICATIONS
FOR
ACID-RESISTING ASPHALT MASTIC' A.S.T.M Designation: D 223 - 30
These specifications are issued under the fixed designation D 223; the final number indicates the year of original adoption as standard or, in the case of revision, the year of last revision
ISSUED AS TENTATIVE, 1925; ADOPTED, 1930
suitable for use in waterproofing, consisting of mastic cake, asphalt cement and mineral aggregate
(b) The grade of asphalt mastic covered by these specifications
is suitable for waterproofing, tank linings, floors, etc., where dilute mineral acids at temperatures below 100° F (38° C.) are encountered
Properties 2 This asphalt is a mixture of mastic cake, asphalt cement and
Mastic Cake
mineral aggregate, which at a temperature of approximately 205° C ( 400° F ) is sufficiently plastic to be poured into place and compressed with a wooden trowel or equivalent tool into a compact mass
As used for strictly waterproofing purposes the mastic cake, asphalt cement and mineral aggregate are combined under heat and manual stirring in substantially the following proportions by weight:
Mastic Calce 48 per cent Asphalt Cement 5 "
Mineral Aggregate 47
3 (a) The mastic cake shall conform to the following require-ments:
Weight per cake not more than 80 lb Soluble in pure benzol 14 to 18 per cent by weight Insoluble in pure benzol 82 to 86 per cent by weight
(b) The matter soluble in pure benzol shall be asphalt cement, which, after recovery from the mastic cake, shall conform to the requirements of the Tentative Specifications for Asphalt Cement, 25
1 Under the standardization procedure of the Society, these specifications are under the jurisdiction
of the A.S.T.M Committee D-8 on Bituminous Waterproofing and Roofing Materials
(922)
Trang 2A.S.T.M DESIGNATION: D 223 30 923
to 30 Penetration, for Use in Sheet Asphalt and Asphaltic-Concrete
Pavements (A.S.T.M Designation: D 163 - 23 T) of the American
Society for Testing Materials.1
(c) The matter insoluble in pure benzol shall be granular mineral
matter which after recovery from the mastic cake shall conform to the
following requirements as to grading
Passing No 200 sieve not less than 25 per cent
Passing No 10 sieve, retained on No 50
sieve not more than 25
Retained on No 10 sieve not more than 1
It shall contain not more than 5 per cent by weight of material
soluble in hydrochloric acid
4 The asphalt cement shall conform to the requirements of the
Tentative Specifications for Asphalt Cement, 25 to 30 Penetration,
for Use in Sheet Asphalt and Asphaltic-Concrete Pavements (A.S.T.M
Designation: D 163 - 23 T) of the American Society for Testing
Materials.1
5 The mineral aggregate shall be gravel or crushed stone and
sand and free from carbonates It shall conform to the following
requirements as to grading:
Passing No 200 sieve none
Passing No 50 sieve, retained on No 200
sieve not more than 25 per cent
Passing No 10 sieve, retained on No 50
sieve not less than 25
Passing No 4 sieve, retained on No 10
sieve not less than 5 0
Retained on No 4 sieve not more than I 0
It shall contain not more than 5 per cent by weight of material
soluble in hydrochloric acid
Asphalt Cement
Mineral Aggregate
6 The properties enumerated in these specifications shall be Method of determined in accordance with the Standard Methods of Testing Testing Bituminous Mastics, Grouts and Like Mixtures (A.S.T.M
Designa-tion: D 147) of the American Society for Testing Materials.2
Tentative Standards, p 420
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