Civil Engineering Materials Exam -3 Exam Questions with Accurate Answers 100-.pdf

Civil Engineering Materials Exam #3/Exam Questions with
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Accurate Answers 100% ,./ ,./




difference between concrete & bituminous materials -
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correct answer ✔ ✔
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water & cement provide bonding for concrete aggregate with
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the need for water, while asphalt cement provides bonding for
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bituminous materials without water ,./ ,./ ,./




bitumen - correct answer ✔ ✔,./ ,./ ,./ ,./


viscous liquid or solid essentially hydrocarbons and their deri
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vatives. soluble in carbon di-sulphide. Non-
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volatile, softens when heated. Black or brown coloring. Water-
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proofing and adhesive properties. Natural deposit (petroleum).
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Use for roads as asphalt and tar
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tar - correct answer ✔ ✔
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viscous black liquid obtained by destructive distillation of co
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al, wood, shale
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distillation - correct answer ✔ ✔ ,./ ,./ ,./ ,./


subjected to heat and high pressure without access to air
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,sources of natural asphalts - correct answer ✔ ✔
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trinidad lake ,./




trinidad lake - correct answer ✔ ✔,./ ,./ ,./ ,./ ,./


from the island of trinidad. approximately 40% asphalt + 30
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% water + 30% mineral matter (clay)
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types of natural asphalts - correct answer ✔ ✔
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gilsonite & petroleum asphalt ,./ ,./ ,./




gilsonite - correct answer ✔ ✔ ,./ ,./ ,./ ,./


practically pure asphalt. 90% soluble in CS2. very hard. prim
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ary use in asphalt paints and asphalt floor tiles
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petroleum asphalt - correct answer ✔ ✔ ,./ ,./ ,./ ,./ ,./


primary source from the refining of petroleum. Higher grade
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crude oil --> 10% asphalts. Lower grade crude oil --
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> 90% asphalts
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uses of asphalt - correct answer ✔ ✔
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paving (road construction), roofing, protective coatings
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, classification: paving (road construction) - correct answer ✔
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primarily produced by the vacuum and steam refining and sol
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vent deasphalting process.
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petroleum asphalts - correct answer ✔ ✔,./ ,./ ,./ ,./ ,./


asphalt cements, cutback asphalts, emulsified asphalts, air-
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blown asphalts ,./




emulsified asphalts - correct answer ✔ ✔ ,./ ,./ ,./ ,./ ,./


the suspension of small globules of one liquid into another wi
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thout intermixing
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roofing - correct answer ✔ ✔ semi-
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solid or solid. shingles and roll roofing
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protective coatings - correct answer ✔ ✔
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pipe coatings, reservoir and canal linings. highly blown aspha
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lts and finely divided mineral fillers.
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