answered already passed
What is aggregate used for in concrete? - correct answer ✔✔as reinforcement to add strength
to the overall composite material
What are some drainage applications of concrete? - correct answer ✔✔foundations, well
drains, edge drains
What are the 2 types of aggregate? - correct answer ✔✔natural and synthetic
What are the 3 types of natural aggregate (the 3 rock types)? - correct answer ✔✔igneous,
sedimentary, metamorphic
Volcanic rock is what kind of rock? - correct answer ✔✔igneous
Are the natural properties of (natural) aggregate changed during preparation? How is rock
changed during preparation? - correct answer ✔✔no, crushing, sorting, washing
What is the typical bulk density of natural aggregate? - correct answer ✔✔95 pcf
What is the typical bulk density of volcanic rock? - correct answer ✔✔70 pcf
What are the 3 ways synthetic aggregate is produced? - correct answer ✔✔byproducts of
industrial processes, products of special aggregate processes, recycled or waste materials
, Where is natural aggregate sourced from? - correct answer ✔✔quarries and natural deposits
What are some uses of aggregate/concrete (besides drainage applications)? - correct answer
✔✔foundations, roads, grout, railroads, plaster, filler
What institutions provide standards for aggregate? - correct answer ✔✔ASTM and state DOTs
What are some examples of synthetic aggregate? - correct answer ✔✔tire chips, steel
punchings, glassphalt
What are the 5 common shapes of aggregate? - correct answer ✔✔angular, rounded, flaky,
elongated, flaky and elongated
Synthetic aggregate is more/less common and more/less expensive than natural aggregate. -
correct answer ✔✔less, more
What does aggregate shape dictate? - correct answer ✔✔application, use, how it interlocks,
slides, and rolls
What are the main shape properties of aggregate? - correct answer ✔✔angularity and flakiness
What does an aggregate shape depend on? - correct answer ✔✔composition and processing
What aggregate is usually used in Portland Cement concrete? - correct answer ✔✔natural
gravel
What aggregate is usually used in asphalt concrete? - correct answer ✔✔crushed stone