a.
Strength (see Table 2-1 on page 2-3) __________
b.
Durability and watertighness (see Table 2-1:
Durability
__________
Watertightness
__________
c.
Choose the lowest of the above. Design w/c ratio = _____
5.
Select water content and percent of air (sea Table 2-2 on page 2-4)
a.
Water content __________
b.
Percent of air (entrapped or entrained) __________
6.
Calculate cement content
7.
Volume of gravel (see Table 2-6 on page 2-14)
Weight of gravel = BUW x loose volume = _____ x _____ _____
8.
Volume of sand.
a.
Convert to absolute volume:
(4)
Air = percent of air x 27 = _____ x 27 = _____
(5)
PV = summation = _____
b.
Absolute volume of sand = 27 - PV = 27 - _____ = ______
c.
Weight of sand = absolute volume x SG x 62.4 = _____ x _____ x 62.4 = _____
d.
Loose volume sand = weight of sand = _____ = _____
BUW sand
9.
Preliminary mix proportions for a cubic yard batch.
Summary:
Cement ____________ lbs __________ sacks
Water
____________ lbs __________ gallons
2-27
EN5466
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