Zenith manual Appendix C-30HDG Concrete MIX Information

APPENDIX — C-30HDG CONCRETE MIX INFORMATION

The following information has been extracted from actual testing laboratory reports. The purpose of this printing is only to help create a better understanding of the importance of uniform gradation and proportioning of materials which affect pumpability of concrete mixes.These weights and proportions illustrate that when the sieve analysis is ideal, the sand/rock ratio can be adjusted (65% sand 35% rock) and pumpability should be excellent.

EXAMPLE #1 (A California Test Lab. Report)

JOB: Building Foundations (Water Project)

Sacks per cu./yd.	6.5 designed for 2,500 lbs. in 28 days
Gallons per sack	7.1
Washed Sand-#200 wash	1.3
Organic matter-OK
Specific gravity (SSD)	Sand-2.58; Pea Gravel-2.60

Sieve analysis-percent passing
Material	1.5”	1”	3/4”	3/8”	#4	#8	#16	#30	#50	#100	#200
W.C. Sand				100	99.7	79.1	60.4	36.5	14.3	4.0	1.1
Pea Gravel				100	3.0
% Comb.				100	66	51	39	23	9	3	1.0

DESIGN FOR ONEYARD OF CONCRETE (SATURATED & SURFACE DRY):

Absolute volume of aggregate in one cu. yard:	17.78 cu. ft.
Specific gravity of aggregates in one cu. yard:	2.58
Weight of aggregates in one cu. yard batch:	2850 lbs.

	%	BATCH	SPEC.GRAVITY	ABS.VOL.
W.C. Sand	65	1800	2.58	11.56
PEA GRAVEL	35	1000	2.60	6.22
WATER 46 gal.		1
CEMENT 6.5 sk.		611
TOTAL				27.00
ADMIXTURE:		None
SLUMP		4”
REMARKS		This mix designed for pumping
NOTE:		Due to the availability of well-graded sand as shown in the above sieve analysis,
		this mix pumped very successfully.

MAYCO C-30HDG PUMP — OPERATION AND PARTS MANUAL — REV. #6 (04/02/12) — PAGE 61