Question
In: Civil Engineering
Determine the quantities of materials required per cubic yard to create a concrete mix. The specifications...
Determine the quantities of materials required per cubic yard to create a concrete mix. The specifications require a maximum size aggregate of 3/4 in., a minimum cement content of 6 sacks per cy, and a maximum water-cement ratio of 0.5. Assume 7% air voids. Consider the ratio of course aggregates to be 65% of the total aggregates by volume.
Please refer to the standard weights & densities (at the end of the test) for specific gravities and unit conversions.
Solutions
Expert Solution
Complete calculation and final results are given below.
Ally Wells answered 10 months agoRelated Solutions
Determine the quantities of materials required per cubic yard to create a concrete mix. The specifications...
Determine the quantities of materials required per cubic yard to
create a concrete mix. The specifications require a maximum size
aggregate of 3/4 in., a minimum cement content of 6 sacks per cy,
and a maximum water-cement ratio of 0.5. Assume 7% air voids.
Consider the ratio of course aggregates to be 65% of the total
aggregates by volume. Please refer to the standard weights &
densities (at the end of the test) for specific gravities and unit
conversions.
7) You are working on a concrete mix design that requires each cubic yard of concrete...
7) You are working on a concrete mix design that requires each
cubic yard of concrete to have a 0.45 water–cement ratio,2100
lb/yd3 of dry gravel, 250 lb/yd3 of water, and 5% air content. The
available gravel (NMS = ¾”) has a specific gravity of 2.6 ,
moisture content of 2.5% and absorption of 4.5%.The available sand
has a specific gravity of 2.4, a moisture content of 2.5% and
absorption of 2%. Air entrainer is to be included using the...
7) You are working on a concrete mix design that requires each cubic yard of concrete...
7) You are working on a concrete mix design that requires each
cubic yard of concrete to have a 0.45 water–cement ratio,2100
lb/yd3 of dry gravel, 250 lb/yd3 of water, and 5% air content. The
available gravel (NMS = ¾”) has a specific gravity of 2.6 ,
moisture content of 2.5% and absorption of 4.5%.The available sand
has a specific gravity of 2.4, a moisture content of 2.5% and
absorption of 2%. Air entrainer is to be included using the...
A concrete mix is required for reinforced concrete wave breaker at seashore where frequent mild freezing...
A concrete mix is required for reinforced concrete wave breaker
at seashore where frequent mild freezing and thawing is
dominant.
A specified compressive strength of 25 MPa is required at the age
of 28 days, and the size of the section and reinforcement dictate
using a maximum aggregate size of 19 mm.
The company had no history of testing concrete used.
The coarse aggregate meets the ASTM grading requirements. It has
absorption of 2%, a BSG (D) of 2.70 and...
A concrete mix is required for reinforced concrete wave breaker at seashore where frequent mild freezing...
A concrete mix is required for reinforced concrete wave breaker
at seashore where frequent mild freezing and thawing is dominant. A
specified compressive strength of 25 MPa is required at the age of
28 days, and the size of the section and reinforcement dictate
using a maximum aggregate size of 19 mm. The company had no history
of testing concrete used. The coarse aggregate meets the ASTM
grading requirements. It has absorption of 2%, a BSG (D) of 2.70
and...
A concrete mix is required for reinforced concrete wave breaker at seashore where frequent mild freezing...
A concrete mix is required for
reinforced concrete wave breaker at seashore where frequent mild
freezing and thawing is dominant. A specified compressive strength
of 25 MPa is required at the age of 28 days, and the size of the
section and reinforcement dictate using a maximum aggregate size of
19 mm. The company had no history of testing concrete used. The
coarse aggregate meets the ASTM grading requirements. It has
absorption of 2%, a BSG (D) of 2.70 and...
A concrete mix is required for reinforced concrete wave breaker at seashore where frequent mild freezing...
A concrete mix is required for reinforced concrete wave breaker
at seashore where frequent mild freezing and thawing is dominant. A
specified compressive strength of 25 MPa is required at the age of
28 days, and the size of the section and reinforcement dictate
using a maximum aggregate size of 19 mm. The company had no history
of testing concrete used. The coarse aggregate meets the ASTM
grading requirements. It has absorption of 2%, a BSG (D) of 2.70
and...
A. Calculate the price of pit-run gravel delivered to the site per cubic yard (bank measure)...
A. Calculate the price of pit-run gravel delivered to the site
per cubic yard (bank measure) based on the following data: The pit
is located 10 miles from the site. Trucks cost $43.75 per hour
including fuel and maintenance; they have 12 cubic yards (loose
material) capacity and travel at an average speed of 30 miles per
hour. The swell factor for this material is 15%. Trucks take 5
minutes to unload at the site. The loader costs $82.50 per...
The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.97;...
The following data relate to direct materials costs for
February: Materials cost per yard: standard, $1.97; actual, $2.04
Standard yards per unit: standard, 4.60 yards; actual, 5.22 yards
Units of production: 9,400 Calculate the direct materials quantity
variance. a. $11,889.12 unfavorable b. $11,481.16 favorable c.
$11,889.12 favorable d. $11,481.16 unfavorable
The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.97;...
The following data relate to direct materials costs for
February:
Materials cost per yard: standard, $1.97; actual, $2.05
Yards per unit: standard, 4.64 yards; actual, 5.01 yards
Units of production: 9,500
The direct materials quantity variance is
a.$7,205.75 favorable
b.$7,205.75 unfavorable
c.$6,924.55 favorable
d.$6,924.55 unfavorable
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