NAZARBAYEV UNIVERSITY

School of Engineering Examination for Internal Students

Academic Session : Spring 2016

ECCE 321: CIVIL ENGINEERING MATERIALS

Exam 2: Material Behaviour, Aggregate, and Asphalt Concrete Date: 26/04/2016 Time: 16:00-19:00

Time Allowed – 3 hours

All questions carry 100 marks, you can obtain a maximum of

100 Marks in this examination.

The use of calculators approved by the School of Engineering is permitted.

DO NOT WRITE ON THIS EXAMINATION QUESTION PAPER. THIS PAPER WILL BE COLLECTED AFTER THE EXAMINATION HAS ENDED.

Name: Tanat Abildinov UIN: 201200553

Integrity Statement

I understand that I am bound by the School of Engineering Honor Code at Nazarbayev University, specifically for this exam provisions under Academic Misconduct, Cheating: Intentionally using or attempting to use unauthorized materials, information, notes, study aids or other devices or materials in any academic exercise.

I certify that the answers that I will provide on this exam represent my work and only my work and that I understand that I am not to seek the help of others or their advice or any type of guidance that is otherwise extraneous to my origin to aid me in any way in answering the questions on this examination.

If I violate the School of Engineering Honor Code, I understand that I could be subject to any of the Academic Integrity Sanctions provided in accordance with the School of Engineering Honor System Process. These sanctions include academic and educational sanctions as well as expulsion, dismissal, or suspension, and other additional consequences.

More information regarding the School of Engineering Honor Code can be found the web at: http://seng.nu.edu.kz/seng/CurrentStudents/SEng_Handbook_r16April2014.pdf.

Signed

Choose one best answer for each question. (1.5 mark per each)

1. ALL of the following are aggregate tests EXCEPT:

   1. Viscosity

   2. LA abrasion

   3. Soundness

   4. Sieve analysis

2. Asphalt Concrete can be composed of the following EXCEPT:

   1. Air

   2. Water

   3. Aggregate

   4. Asphalt

3. If MC is greater than AC, the aggregate is:

   1. Wet in the stockpile

   2. In an oven dry state

   3. Dry in the stockpile

   4. Will absorb mixing water in a asphalt concrete mix

4. ALL of the following are laboratory tests for asphalt binder characterization EXCEPT:

   1. Brookfield Rotational Viscometer (RV)

   2. Dynamic Shear Rheometer (DSR)

   3. Indirect Tension test (IDT)

   4. Bending Beam Rheometer (BBR)

5. In general, G_se is G_sb.

   1. Larger than

   2. Smaller than

   3. the same as

   4. 4 times as small as

6. Which of the following binder grade should be selected at a 98% reliability level where the mean seven-day maximum pavement temperature is 58°C with a standard deviation of 1.5°C AND a mean minimum pavement temperature of -18°C with a standard deviation of 2.0°C?:

a) PG 58-16

b) PG 58-22

c) PG 64-16

d) PG 64-22

7. ALL of the following are maximum specifications in the PG binder specification

Except:

1. Resistance to thermal cracking in terms of stiffness

2. Resistance to rutting

3. Resistance to fatigue cracking

4. Pumpability / handling

1. An asphalt concrete mixture test used to estimate resistance to rutting is:

   1. Flexural Bending Beam

   2. Dynamic Shear Rheometer (DSR)

   3. Thermal Stress Restrained Specimen Test (TSRST)

   4. Asphalt Pavement Analyzer (APA)

9. In the PG binder specification, the property that controls mixture resistance to thermal cracking is:

   1. G*/sin 

b) S(t=60)

3. G* sin 

4. E*

10. The concept of time-temperature superposition is used to characterize asphalt concrete in terms of a master curve for the following parameter:

    1. Stiffness

    2. Stability

    3. Safety

    4. Solubility

11. The mechanism of material failure caused by repeated loads is:

    1. Creep

    2. Fracture

    3. Fatigue

    4. Relaxation

12. High binder contents provide ALL of the following benefit to asphalt concrete mixtures