9
MINIMIX 150 OPERATORS MANUAL
Loading & Unloading
GB
A few hints on mixing. First add water, about 1
1
/
2
gallons approximately, depending on the type of
mix. Cement should go in after some of the aggregates work consistently to the ratio of ingredients
as listed below for whatever type of concrete mix you are working to. Beware of low grade
aggregates, this only leads to trouble later on with sinking and frost spoiling the appearance of the
pour. Also importantly do not get the concrete mix too wet as this can reduce the strength and is
less able to withstand weathering. Never throw material into the mixer, trickle it steadily over the rim
or it will stick firmly to the back of the drum and can only be dislodged by stopping the mixer. The
approximate mixing time for concrete is 2
1
/
2
minutes, this is taken when all the material, including
the water has entered the drum. Over mixing can reduce strength and cause segregation of the
coarser aggregates.
Keep your mixer clean, the slightest trace of material left in the drum, will harden and attract more
each time you use it until the machine is useless. Do not throw bricks into a mixer drum to clean it
out. The best method is 1” gravel and clean water, use plenty of it, as this will do the job in half
the time.
Mixing Hints
GB
TABLE OF
CONCRETE MIXES
MOST ORDINARY
FOUNDATIONS
ROUGH MASS
CONCRETE
WATERTIGHT
FLOORS, TANKS
PITS, ETC.
MIX
1:2:4
1:3:6
1:4:8
1:1 1/2:3
CEMENT
112 lb.
50kg
bag
1/2 BAG
1/3 BAG
1/4 BAG
2/3 BAG
CU.FT
1 1/4
1 1/4
1 1/4
1 1/4
LTR
35
35
35
35
CU.FT
2 1/2
2 1/2
2 1/2
3
LTR
71
71
71
71
CU.FT
3
2 3/4
2 3/4
3
LTR
85
78
78
85
BATCH QUANTITIES
SAND
STONE
APPROX.
BATCH OUTPUT
5 No 2 shovels = approx. 1 cu.ft
Never remain under or in the immediate vicinity of the machine when it is lifted by a crane.
Only use marked lifting points. Always make sure that all lifting devices are dimensioned
for the weight of the products.