Multiquip ST-45HRM CE manual APPENDIX — ST-45HRMCE CONCRETE PUMPCONCRETE MIX

APPENDIX — ST-45HRM CE CONCRETE PUMPCONCRETE MIX

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
Sacks per cu./meter.		8.5 designed for 1,134 kg. in 28 days
Liters/Gallons per sack		26.9/7.1
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
3.81 cm =1.5 in.	2.54 cm = 1.0 in.			1.90 cm = 0.75 in.			.952 cm = 0.375
DESIGN FOR ONEYARD OF CONCRETE (SATURATED & SURFACE DRY):
Absolute volume of aggregate in one cu. yard:				503 liters (17.78 cu. ft.)
Specific gravity of aggregates in one cu. yard:				2.58

Weight of aggregates in one cu. yard batch: 1,293 kg. (2,850 lbs.)

	%	BATCH	SPEC.GRAVITY	ABS.VOL.
W.C. Sand	65	1800	2.58	327 liters (11.56 cu. ft)
PEA GRAVEL	35	1000	2.60	176 liters (6.22 cu ft.)
WATER 174 liters/46 gal.		1
CEMENT 6.5 Sack/cu yd		611
CEMENT 8.5 Sack/cu meter		611
TOTAL				27.00
ADMIXTURE:		None
SLUMP		10.2 cm (4-inches)
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.

PAGE 64 — MAYCO ST-45HRM CE PUMP — OPERATION & PARTS MANUAL — REV. #0 (02/23/04)