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CE 337 EXAM 2 QUESTIONS AND CORRECT ANSWERS

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CE 337 EXAM 2 QUESTIONS AND CORRECT ANSWERS

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CE 337 EXAM 2 QUESTIONS AND CORRECT
ANSWERS


Cement & Water - Answers - Paste

Cement & Water & Fine Agg - Answers - Mortar

Cement, Water, Fine, Coarse - Answers - Concrete

Multi Scale Compsite - Answers - Millimeter, Micrometer, Nanometer

States of Concrete - Answers - Fresh/Plastic = (2-4)hrs
Hardening State = (4-8)hrs
Hardened State

Curing of concrete - Answers - Management of temp and moisture

Facts:
Unit weight of concrete
28 day compressive strength
28 day flexural strength
Coef of thermal expansion
Permeability - Answers - 140-150 lb/ft^3
3000-6000 psi
500-700 psi
4-6 ue/F
10^-3-10^-4 mm/sec

Joesph Aldin, A British bricklayer from Leeds patented portalnd concrete cement in -
Answers - 1824

Production of Portland cement - Answers - limestone, clay, slag, chalk 2700F
Produces Clinker and Gypsum

Main Components - Answers - Tri-Calcium Silicate (C3S) * Impact early strength
Di-Calcium Silicate (C2S) * Impact late strength
Tri-Calcium Aluminate (C3A) * Impact on heat
Tetra-Calcium Alumino Ferrite (C4AF) * Slow heat

Minor Components - Answers - Magnesium Oxide
Sodium Oxide
Titanium Oxide
Manganese Oxide

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