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Test_5_solution - Michigan State University Department of...

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Unformatted text preview: Michigan State University Department of Civil and Environmental Engineering CE 337- Civil Engineering Materials (4 credits) Fall 2007 Test 5 11/28/07 ——_ _— CE 337-Test 5 1 Fall’07 Question 1 (7 points). True and false, fill in blanks and multiple choices. Each correct response is worth 1/2 point—for a total of 7 points. A no response is considered as incorrect. l. The three major components of asphalt cement are EE‘SN‘ > O l L6 and AMLEE‘; Q (hint. The answer is not hydrogen and carbon.) 2. A material wh se stiffness 1s a function of temperature and rate of loading rs defined as a Qt (ZOELJéTi C ! material. 3. The absolute viscosity test is performed at I 40 0F and the kinematic viscosity test is performed at g 75 0F. 4. The TF OT measures long-term aging of asphalt cement. TRUE- 5. An asphalt cement that IS classified as an AC 5 has a Viscosity range eof 500 + g 2 l O poise. 6. Performance graded asphalts address pave e t d1stresses lik m, 4M @9662qu mil—W CaACLNG 7. The pres e aging vessel test simulates short-term aging of asphalt cement. TURE @ 8. The susceptibility 10W te erature cracking of asphalt cement is quantified by performing the Emma 6AM test. 9. The slope of the temperature—viscosity plot for a given asphalt cement represents: a) The viscosity of the liquid AC b) The kinematic viscosity of the li ui (f C} Temperature sensitivity- of the liéuid A: :3 d) Penetration grade of the liquid AC CE 337-Test 5 2 Fall’07 Question 2 (7 points) Lexington, KY is at latitude 38.03. The maximum 7—day air temperature is 36°C with a standard deviation of 2°C. The minimum air temperature is recorded at —20°C with a standard deviation of -4°C. Based on this information answer the following questions: a. What are the maximum and minimum air temperatures at 50% and 98% reliability?(1 point) , 0 Maximum air temperature at 50% reliability is 2&0 C/ Maximum air temperature at 98% reliability is MAD i " , Minimum air temperature at 50% reliability is MO 2 ' , 0 Minimum air temperature at 98% reliability is - 21g 0/ b. What are the maximum and minimum pavement temperatures at 50% and 98% reliability? (1 point) MW aVE—FEKST Temp ~. Hm) Atfl—TENLP MBA“ PA‘J'EMQJT 'TEMP 2. _ 69 93/0 “965‘” 0'006‘3+58"<=5+°'123Cf¥ 53‘03Jr4279-léoew)“ VH8 ‘ Gr 9g70 ? (fi-O ($06 (8* Zg‘ogl:{.o. 2233*39’4651-42 1% he's-14g) __ l”, .78, 0 Maximum pavement temperature at 50% reliability is 9 C" ' a? (1/ 0 Maximum pavement temperature at 98% reliability is w v 4 S f z / Minimum pavement temperature at 50% reliability is 792/0 6Q, Minimum pavement temperature at 98% reliability is " 2 g 0Q/ c. For the pavement temperature ranges determined in part b what PG asphalt do you recommend at 50% and 98% reliability? (2 points) PG at 50% reliability is 5/‘ 27’ PG at 98% reliability sit! ~ 3 74 d. For the binder selected in part (c) li_st other SUPERPAVE binder performance characterization tests. For each test identified state the property of the binder that is being characterized. (3 points) 9A 6:534 /RTF°T 'Vjém Mesouaist< ./ \ PAU CATIQQE L sAFET 9 j v) Ming W q LON TEMP Oman/<1 u—l) MTQWJ C7 vflfimww VAGeMdEL " HEM] CE337-Test5 3 Fall’07 W Question 3 (6 points). Sketch and label in the space provided below; a A typical curve for a (i) temperature sensitive asphalt cement and (ii) temperature insensitive asphalt cement. b. Sketch and label a typical asphalt pavement cross— section. On this sketch identify (type and location) of the strains that cause fatigue and rutting. 77.3w .0 lngUQ \T‘l v E tee ‘E.__,_m___.__ _ _ ‘6 CE 337-Test 5 4 Fall’07 ...
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