PAGE 14 — ST-70 — PARTS & OPERATION MANUAL — REV. #4 (05/29/07)
ST-70 — CONCRETE MIX INFORMATION
Job Identification* _______________________________________ Date* ______________________________________
Architect* ______________________________________________ General Contractor* ___________________________
Structural Engineer* ______________________________________ Concrete by* ________________________________
THE PROPORTIONS SHOWN HERE ARE A RECOMMENDATION BASED ON TESTS OF SAMPLES RECEIVED BY THE
LABORATORY. TESTS PERFORMED BY SUPPLIERS OR MANUFACTURERS OR ON PRIOR KNOWLEDGE OF THE
MATERIALS INVOLVED AND IS LIMITED TO INFORMATION DERIVED FROM THESE SAMPLES TESTS BY OTHERS OR
TO THAT PRIOR KNOWLEDGE.
IT IS UNDERSTOOD THAT THE CHEMICAL AND/OR PHYSICAL CHARACTERISTICS OF THESE MATERIALS ARE
SUBJECT TO VARIATIONS THAT MAY ADVERSELY AFFECT THE FINISHED PRODUCT AND THAT THIS MIX DESIGN IS
NOT TO BE USED EXCEPT AT THE USERS OWN RISK UNLESS THESE VARIATIONS ARE DETERMINED AND
COMPENSATED FOR IN A MANNER APPROVED BY THE LABORATORY IN WRITING.
Specifications requirements:
2500 P.S.I.
in 28 DAYS
3" SLUMP
PUMP MIX
4" DIA LINE
SIEVE ANALYSIS
PER CENT PASSING U.S. STANDARD SIEVE
MATERIAL ......... 1 1/2 ............ 1 ............... 3/4 ..................................................................................................................
FAI WCS ....................................................................... 100 ........ 97 ............ 84 ........... 70 ....... 45 ........ 25 ..... 10 ....... 97.5
FA2 ...................................................................................................................................................................................
CA1 #4-3/8" .............................................. 100 ............. 95 .......... 13 ............ 3 ............................................................... 90.5
CA2 #3-1 ................................ 100 ........... 96 ............... 61 .......... 6 .............. 1 ............................................................... 91.0
CA3 ..................................................................................................................................................................................
............................................... 100 ........... 98 ............... 85 .......... 50 ............ 40 ........... 33 ....... 21 ........ 12 ..... 4 .........
Source of Coarse & Fine Aggregates -*
Cement – Type* Mix No*
Cement Sks/Cu. Yd. ................................................................ 5.3
Cement – Lbs. ........................................................................ 500
Sand, Lbs. W.C.S. ................................................................... 1550
No. 4 Gravel (3/8"), Lbs. .......................................................... 500
No. 3 Gravel (1"), Lbs. ............................................................. 1220
No. 2 Gravel (1-1/2"), Lbs. .......................................................
Water, Lbs............................................................................... 290
Total Weight ........................................................................... 4060
Water, gal. per yd. ................................................................... 34.8
Water, gal./Sk. per yd. ............................................................. 6.5
Slump, calculated ................................................................... 3"
Admixture ............................................................................... 3 fl. oz. POZZOLITH 300N/100 * OF CEMENT
Max. Water Allowable ............................................................. *
* THIS INFORMATION PROVIDED BY ENGINEER OR BATCH PLANT
THE ABOVE MIX DESIGN IS TYPICAL OF A PUMPABLE MIX. TO BE USED AS A GUIDELINE ONLY. REFER TO LOCAL
AGENCY FOR JOB SPECIFICATION.
3-5
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