SECTION A-STATISTICS IN CIVIL/TRANSPORT ENGINEERING a) When comparing the quality of asphaltic material provided by two plants, X and Y, for a certain highway job, sufficient samples from each plant were taken and tested. The results from Plant X, showed a peaked bell shaped distribution (Lepto-Kurtosis) while those from Plant Y gave a flat shape (Platy- Kurtosis). Which plant, in your opinion, has a better quality control and why?

SECTION A-STATISTICS IN CIVIL/TRANSPORT ENGINEERING a) When comparing the quality of asphaltic material provided by two plants, X and Y, for a certain highway job, sufficient samples from each plant were taken and tested. The results from Plant X, showed a peaked bell shaped distribution (Lepto-Kurtosis) while those from Plant Y gave a flat shape (Platy- Kurtosis). Which plant, in your opinion, has a better quality control and why?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Example: An HMA sample had been taken from a road during the construction, the weight of sample after the separation of binder was 4621 gm and the retaining on each sieve is shown in following table. Determine whether HMA sample is satisfying the Iraqi specification for base course asphalt or not? [ 62 ] Dr. Basim Al-Humeidawi University of Al-Qadissiyah Roads and Transport Department College of Engineering Technology of asphalt concrete 2nd Year % passing according to Iraqi specification Base Binder Surface Surface course course A course B course 37.5 100 25 90 - 100 100 86.32 19 632 76 - 90 90 - 100 100 13.67 12.5 920 56 - 80 70 - 90 90 - 100 100 9.5 612 48 - 74 56 - 80 76 - 90 90 -100 4.75 628 29 - 59 35 - 65 44 - 74 55 - 85 2.36 405 19 - 45 23 - 49 28 - 58 32 - 67 0.3 833 5 -17' 5 - 19' 5 - 21' 7- 23 ' 0.075 406 2 -8' 3 - 9' 4 - 10' 4 - 10' Pan 185 Total 4621 weight
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Highway engineering civil engineering Question number (30)
Explain why asphalt concrete samples from the hot-mix plant are taken for compaction in the laboratory during asphalt overlay construction
I need the solution by table
BMD revolves around the concept of balancing rutting and cracking of the mix. The figure below applies to all three different BMD methodologies. Using your own words explain all different components of this figure, how BMD is achieved, and what different tests and parameters are used to assess the asphalt mixes cracking and rutting performance. Submit your solution in a word file (maximum number of words allowed: 800) Cracking Durable Min Max Rinder Content Stable Rutting
Flexible road pavement is more popular as compared to concrete road pavement in Malaysia. i) Discuss why flexible road pavement is more popular. ii) Describe one (1) test that is used to measure hardness of bituminous material
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Answer the following questions: 1. 250 cu.m-Column, 185 cu.m-concrete pavement, how many samples? And what type of sample? 2. 750 lengths of Galvanized Steel Pipes, how many samples should you submit for testing and how much? 3. If you have 450 drums of asphaltic material, how many samples and how much should you submit for testing? 4. You have 25,000 units of CHB, how many samples should you submit for strength determination only? 5. Formworks for Beam with 3,500 psi to be removed after 14 days with a strength of 2,900 psi, would you allow or not? Why? Reference: DPWH Standard Specifications for Public Works and Highway (2004 edition), Volume II