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Trang 1STANDARD SPECIFICATIONS
FOR HIGH-BITUMEN COAL-TAR PITCH FOR USE IN
DAMP-PROOFING AND WATERDAMP-PROOFING DELOW
GROUND LEVELl Serial Designation: D 200 - 25
't'hcs1· s pecification s a re iss u ed u ncl1:r Lllc fixed desi,nalion D 20Q; the final number i ndtcates t he y ear o f o rigi nal a rloption ns stnnda l or, in the cnse or rcviston,
lhc ycnr o r l~sl revi si on
Issu a o AS Tt ~ NTA T t VI!, 1921; Ano Pl' JtD, 1925
scope I These specifications cover high-bitmne.n coal-tar pitch suitable
£or use as a mopping-coat in damp-proofmg or as a plying-cement in the construction of a membrane system of waterproofing below ground level, tmder uniionnly moderate temperature conditions both during the process of installation and during service
2 The grade of high-bitumen coal-tar pitch covered by these specitications is sui able for dau1p-proofing and waterproofing founda -tions, tunnels, subways, etc ·
SAMPLING
Standard Methods of Srunpling :Bituminous Materials (Serial Desig-nation: D 140) of the American Society for Testing Materials.:!
Pro1•orllea 4 The coal-tar pitch shall be homogeneous and shall conform to
the following requirements:
(a) Water 0.0 per cent
(b) Specific gravity at 25° C (77° F.) 1.21 to 1.30
(c) Softening Point (Cube-in-Water
Method) 110 to 140° F (43.3 to 60° C.)
(d) Distillation Test:
Total distillate, hy weight, 0.0 to JOO" C
(32 to 572" Jl'.) not m o r e than 15 0 p~ cent Residue, by weight not les s than 85.0 per cent • Un<ler the st.andnrdization Jll'DCe<lure of the Sueiety, lhC"r specifie tions n1o under the jurilldic lion of the A s:r.hr Cornm•l~e LI·S O il U i tuu•in o> U> w ~ t ~l)\ · oofin v ~u d Ruolinl:' MRterials
•See fl· Stl
(7 r ·I )
Trang 2SERIAL DESIGNATION: D 200 - 2.5 715 (e) Specific gravity at 38°/25° C (100° /77° F.) of total
distillate to 300° C (572° F.) not less than 1.03
(j) Ductility at 25° C (77° F.) not less than 50 em
(g) Total Bitumen (Soluble in Carbon
Disulfide) 75 to 90 per cent
METHODS OF TESTING
5 The properties enumerated in these specifications shall be Method~ determined in accordance with the following methods of test of the of Testing
American Society for Testing Materials:
(a,) Percentage of Water: Standard Method of Test for Water
in Petroleum Products and Other Bituminous Materials (Serial
Designation: D 95).1
(b) Specific Gravity: Standard Method of Test for Specific
Gravity of Road Oils, Road Tars, Asphalt Cements and Soft Tar
Pitches (Serial Designation: D 70).2
(c) Softening Point: Standard Method of Test for Softening
Point of Tar Products (Cube-in-Water Method) (Serial Designation:
D 61) 3
(d) Distillation: Tentative Method of Test for Distillation of
Bituminous Materials Suitable for Road Treatment (Serial
Designa-tion: D 20 27 T).4
(e) Ductility: Tentative Method of Test for Ductility of
Bitu-minous Materials (Serial Designation: D 113-26 T).5
(f) Total Bitumen (Soluble in Carbon Disulfide): Standard
l\!Iethod of Test for the Determination of Bitumen (Serial
Designa-tion: D 4).6
tative Standards, p 505
'Proceedings, Am Soc Testing lllats., Vol 26, Part I, p 886 (1926); also 192'1 Book of A.S.T.i'vl
Tentative Standards, p 510
'Seep 484