2006-02-13_REVISION - M1984044

• Permit No: M1984044
• IBM Index Class Name: Revision
• Doc Date: 2/13/2006
• Doc Name: Application
• From: American Gypsum
• To: DMG
• Type & Sequence: TR7
• Media Type: D
• Archive: No

73 Type II portland cement, 90 to 125 pounds per cubic yard flyash and 20 to 30 pounds per cubic
74 yard silica fume. The total content of Type II portland cement, flyash anti silica fume shall be
75 580 to 640 pounds per cubic yard. Laboratory trial mix for Class HT concrete must not exceed
76 permeability of 2000 coulombs at 56 days (ASTM C 1202). Laboratory trial mix for Class HT
77 concrete must not exhibit a crack at or before 14 days in the cracking tendency test (AASHTO
78 PP 34).
79
80 Class P concrete is used in pavements. Additional requirements for Class P concrete are: Class P
81 concrete shall contain a minimum of 55 percent AASHTO M 43 size No. 357 or No. 467 coarse
82 aggregate. If all transverse joints are doweled, then Class P concrete shall contain a minimum of
83 55 percent AASHTO M 43 sizes No. 57, No. 67, No. 357, or No. 467 coazse aggregate.
84 Laboratory trial mix for Class P concrete must produce an average 28 day flexural strength of at
85 least 650 psi, Class P concrete shall contain 70 percent to 80 percent portland cement and 20
86 percent to 30 percent Class F fly ash in the total weight of cement plus fly ash.
87
88 Unless acceptance is based on flexural strength, the total weight of cement plus Class F fly ash
89 shall not be less than 660 pounds per cubic yard. If acceptance is based on flexural strength, the
90 total weight of cement plus Class F fly ash shall not be less than 520 pounds per cubic yard.
91
92 Class S35 concrete is a dense high strength structural concrete. Additional requirements for
93 Class S35 concrete are: An approved water reducing admixture shall be in<orporated in the mix.
94 Class S35 concrete shall be made with 19 mm ('/e inch) nominal sized coazse aggregate, i.e., 100
95 percent passing the 25.0 mm (1 inch) sieve and 90 percent to 100 percent passing the 19 mm ('/<
96 inch) sieve.
97
98 When placed in a bridge deck, Class S35 concrete shall contain a minimum of 55 percent
99 AASHTO M 43 size No. 67 coarse aggregate. Approved fly ash may be substituted for portland
100 cement up to a maximum of 20 percent Class C or 30 percent Class F by weight.
101
102 Class S40 concrete is a dense high strength structural concrete. Additional requirements for
103 Class S40 concrete are: An approved water reducing admixture shall be incorporated in the mix.
104 Class S40 concrete shall be made with 19 mm ('/< inch) nominal sized coarse aggregate. When
105 placed in a bridge deck, Class S40 concrete shall contain a minimum of 55 percent AASHTO M
106 43 size No. 67 coarse aggregate. Approved fly ash may be substituted for ;portland cement up to
107 a maximum of 20 percent Class C or 30 percent Class F by weight.
108
109 Class S50 concrete is a dense high strength structural concrete. Additional requirements for
110 Class S50 concrete aze: An approved water reducing admixture shall be incorporated in the mix.
111 Class S50 concrete shall be made with 19 mm ('/< inch} nominal sized coarse aggregate. When
112 placed in a bridge deck, Class S50 concrete shall contain a minimum of 55 percent AASHTO M
113 43 size No. 67 coarse aggregate. Approved fly ash may be substituted for _portland cement up to
114 a maximum of 20 percent Class C or 30 percent Class F by weight. Labboratory trial mix for
115 Class S50 concrete must not exhibit a crack at or before 14 days in the cracking tendency test
116 (AASHTO PP 34).
117
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G\101Wp100.OM\Reporls\KP\Techniwl Specilcatrons.tloc

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Fabwry 3, 2006