Document Rpn6GL6wXrx5JGDGjn0nNKRw8
PLAINTIFF'S EXHIBIT
BB- Mr. Hixon BBR- Mr. Frazier
BBR- Mr. Wood
MEMORANDUM3906A
BIR-229
BE- Dr. Schnizer BBQ- Mr. Homan
/
MB- Mr. Clay
* Jieply to Subject_______
Date
From To2/23/77
^BH MK- Mr. Marsh_________________________________________
ACCELERATED WEATHERING OF COATING ASPHALTS
MS- Mr. Colvin ..M.1- .Mr. Milipr
MP- Mr. Suva
PB- Mr. Reber
PK- Mr. Davis
PS- Mr. Burris
Accelerated weather testing of unfilled and filled asphalts representing the coatings being used by the various mills during mid-1976 have been completed. The tests were run of 30 to 33 mil coatings applied to aluminum panels. The weathering took place in a
PJ- Mr. Dickinson PBL- Mr. Clark PKL- Mr. Price PSL- Mr. Kirk!in PJL- Mr. Sutton
Model DMCR Weather-Ometer according to ASTM D 529-62, Cycle A.
Pacific Division Mr. McClung
Mr. Fitzpatrick
Mr. McAnulty
Mr. Keyser
Mr. Koopmann
Mr. Costa
Unfi11ed
Mill FK FB FB FJ FJ FS FJ FM FW FW FW FM FO FO
Sample July 4/2 3/5 3/10 March July 3/23 3/19 3/22 3/30 5/2 4/14 3/25 3/31
Cycles to Fai 1 ure 47 47 47 47 47 45 39 35 34 34 34 29 19 17
Mill FK FB FJ FB FJ FS FJ FW FW FW FM FM FO FO
Stabilized
Sample July 4/2 March 3/5 3/10 July 3/23 3/30 3/22 5/2 3/19 4/14 3/25 3/31
Cycles to Failure no 103 103 89 82 82 62 56 47 47 47 32 26 26
BIRD 010976
3906A
Subject
MEMORANDUM
Date
From. 2- -
To
As is usually the case, FK's coatings (averaging filled and unfilled) rank the highest. FB and FS coatings are nearly as durable. With the exception of one out of three coatings tested, FJ also falls into this top category.
Among the Pacific Division coatings, the samples from Wilmington averaged slightly better durability than those from Martinez. The samples from FO showed quite early failure.
Stain test results indicated that the most resistant coatings were from FK. and FS followed by FB and one each of the coatings from FJ and FM. The least stain resistant was a phosphoric acid catalysed coating from FM.
NOTE: Many of the unfilled coatings in this series were sampled at their respective plants when shingles were being produced which were also sampled and sent to Shreveport for exposure on the test decks.
This is an attempt to correlate the durability of shingles with the weatherability of the particular asphalt coating used in their construction. Cross-referenced records are being kept to make this comparison possible.
Reference: BBH Book #236, pp 30 & 31
BIRD 010977
ASPHALT COATING DURABILITY
CYCLES TO FAILURE IN AWT
Tr 'is S' Jn
S.P. F.
4.3 Portland 3/31 Shell Average Filler
224
3.8 Norwood 3/5 Exxon/Shell Venez. Average Filler
224.5
3.8 Norwood 4/2 Exxon/Shell Venez. Average Filler
227
3.8 Martinez 4/14 Shell Persian #10 Average Filler
222
4.5 Martinez 3/19
224
Shell Phos. Acid Cat.
s Average ) Filler
3.0 Charleston, July Exxon Venezuelan Average Filler
222
3.5 Shreveport, July East Texas, Ark. Average Filler
225
4.0 Perth Amboy 3/10 Trumbull Average
i Filler
233
4.0
i \ i : 3.8 '
!
Perth Amboy 3/23 Trumbull
Average Filler
Perth Amboy, March Trumbull
Average Filler
226
Pen 0.1 mm
18 19 18 15 18 18.5 15 18.5
--
18
Unfilled Sample Cycles
890-1 -2
17 17 17
892-1 -2
47 47 47
894-1 -2
47 47 47
896-1 -2
29 29 29
898-1 -2
35 35 35
900-1 -2
47 47 47
902-1 -2
45 45 45
876-1 -2
47 47 47
878-1 -2
37 41 39
880-1 -2
47 47 47
53% Filled Sample Cycles
891 26
Limestone 893
89
FBW Dust 895
103
FBW Dust 897
32
Mart. Filler 899 47
Mart. Filler 901 no
FKW Dust 903
82
Glenwood 877
82
GAF B 65 879
62
GAF B 65 881
103
GAF B 65
BIRD 010978
"Asphalt Coating Durability - Cycles to Failure in AWT
Texas
St-'
---
4.0 Wilmington 3/22 Union Oil Average Filler
4.0 Wilmington 3/30 Union Oil Average Filler
4.0 Wilmington 5/2 Union Oil Average Filler
Portland 3/25 Shell
Average Filler
i
S.P. F. 235
233
237
218
Pen 0.1 mm
15
Unfilled Sample Cycles
882-1 -2
34 34
34
16
884-1
34
-2 34
34
14
886-1
34
-2 34
34
20
888-1
19
-2 19
19
2.
53% Filled Sample Cycles
883 47
3M Filler 885 56
3M Filler 887
47
3M Filler 889
26
Limestone
1
\ BIRD 010979