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CSM Exam 2 (2024) Questions With 100% Correct Answers.
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CSM Exam 2 (2024) Questions With 100% Correct Answers.
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Name: Score:100 Multiple choice questions
Definition 1 of 100
-outcroppings
-sand & gravel pits
-river sand & gravel
Supplementary cementitious materials (SCM)
Sources: naturally occurring aggregate
Physical characteristics of aggregates
Sources: man-made aggregates
Term 2 of 100
Specific Gravity also known as
Distribution
Relative Density
Strength
> 200pct
Term 3 of 100
Specific Gravity is the
Moderate sulfate resistance
Material density relative to water
Smallest sieve where 100% of the aggregate passes through
Sum(cumulative % retained on sieves) /100
,Term 4 of 100
Dry Rodded Unit Weight (DRUW)-
-strength
-stiffness
-wear/abrasion resistance(durability)
-reactivity
-water
-solid forms
-tension force develops
-cracking
-repeat
Aggregate dry & compacted when measured
-void space, interlock, and surface area
Definition 5 of 100
Joseph Aspdin
Patented modern cement in 1824
Density: structural lightweight
Cement production process
1.)
Portland cement standards
Term 6 of 100
Fly ash color
Standard specification for concrete aggregates
•defines requirements for grading and quality
Tan
Strength
F,C,N
,Term 7 of 100
Engineering characteristics of aggregates
-Portland cement concrete
-masonry concrete
-grout
-soil cement
-water
-solid forms
-tension force develops
-cracking
-repeat
Smallest sieve where 100% of the aggregate passes through
-strength
-stiffness
-wear/abrasion resistance(durability)
-reactivity
Definition 8 of 100
2.40 to 2.90
•common value of 2.65
Generally rounded to the 2 decimal places
Typical range for aggregate specific gravity
Typically used fuel source for heating phase of cement production
Nominal maximum aggregate size(NMAS)
Typical Absorption Capacity (AC) for coarse aggregate
, Term 9 of 100
Typical Total Moisture (TM), or Moisture contents for coarse aggregate
16%-40%
Joseph Aspdin
-silica fume
0.5% to 2%
Definition 10 of 100
-aggregates typically exposed to the environment
-can have moisture within their voids and on their surface
-aggregate moisture must be accounted for when proportioning a concrete mixture
Fineness Modulus(FM)
AGGREGATE MOISTURE
AGGREGATE DURABILITY
INERT FILLER
Term 11 of 100
Supplementary cementitious materials (SCM)
Calcium & silica
Perpetration of raw materials
-Fly ash
-Slag
-silica fume
-outcroppings
-sand & gravel pits
-river sand & gravel
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