Q1: Fill the blanks with suitable words:1- The gradation curve provides useful information for the soil material such as ------, theand theofwww-*S2- Moisture (water) content of soil (w) is defined as the ratio of the ----------to the mass of ------ and is expressed as a -3- In pavement engineering, the bearing capacity of the soil is expressed by reference either toor to ------- and these parameters are very useful since they are utilized by many-----., or to4- The -------(M,) test is defined as the ratio of the ------- (a) to the ---- (Er).A- M, 1500 X CBR=5- Formula (A) is used to calculate M, for soil with CBR ------while the formula (B) is used for soil with CBR-----, the unitof these two formulas are inB- M, 2555(CBR)0.64wwww.=

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Q1: Fill the blanks with suitable words: 1- The gradation curve provides useful information for the soil material such as ------, the -, and the of 2-Moisture (water) content of soil (w) is defined as the ratio of the ----------to the mass of ----- - and is expressed as a --------. 3- In pavement engineering, the bearing capacity of the soil is expressed by reference either to and these parameters are very useful since they are utilized by many-----. or to www*--* 4-The- -(M) test is defined as the ratio of the ---- ------- (a) to the ➖➖➖➖➖➖➖ (&). 5- Formula (A) is used to calculate M, for soil with CBR ------ A- M, 1500 X CBR H while the formula (B) is used for soil with CBR-----, the unit of these two formulas are in 3 B- M,= 2555(CBR)0.64 wwww.

Q1: Fill the blanks with suitable words: 1- The gradation curve provides useful information for the soil material such as ------, the -, and the of 2-Moisture (water) content of soil (w) is defined as the ratio of the ----------to the mass of ----- - and is expressed as a --------. 3- In pavement engineering, the bearing capacity of the soil is expressed by reference either to and these parameters are very useful since they are utilized by many-----. or to www-- 4-The- -(M) test is defined as the ratio of the ---- ------- (a) to the ➖➖➖➖➖➖➖ (&). 5- Formula (A) is used to calculate M, for soil with CBR ------ A- M, 1500 X CBR H while the formula (B) is used for soil with CBR-----, the unit of these two formulas are in 3 B- M,= 2555(CBR)0.64 wwww.

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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Concept explainers

Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.

Question

Q1: Fill the blanks with suitable words:
1- The gradation curve provides useful information for the soil material such as ------, the
and the
of
www-*
S
2- Moisture (water) content of soil (w) is defined as the ratio of the ----------to the mass of -----
- and is expressed as a -
3- In pavement engineering, the bearing capacity of the soil is expressed by reference either to
or to ------- and these parameters are very useful since they are utilized by many-----.
, or to
4- The -------(M,) test is defined as the ratio of the ------- (a) to the ---- (Er).
A- M, 1500 X CBR
=
5- Formula (A) is used to calculate M, for soil with CBR ------
while the formula (B) is used for soil with CBR-----, the unit
of these two formulas are in
B- M, 2555(CBR)0.64
wwww.
=

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Problem No. 1A flexible pavement for an urban interstate highway is to be designed using the AASHTOmethod to carry a design ESAL of 3 x 106. It is estimated that it takes about a week for water tobe drained from within the pavement and the pavement structure will be exposed to moisturelevels approaching saturation for 30% of the time. The following additional information is available: Elastic modulus of asphalt concrete = 450,000 psiResilient modulus of base material = 35,000 psiResilient modulus of subbase material = 15,000 psiCBR of subgrade material = 8(a) Consider designing the same pavement with only asphalt concrete and base layer (excluding subbase layer). Use the information provided in Problem 1. (b) Compare strengths and weaknesses of each design.
and -22 represents the For a PG 64-22 binder, 64 represents is the minimum expected pavement temperature. Intermediate pavement temperature Maximum yearly pavement temperature O Average 7 day maximum pavement temperature Average monthly pavement temperature
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An asphalt binder is intended to be used in a climate with maximum 7-day pavement temperature of 73 •C and minimum pavement temperature of -18•C. Following is the SHRP tests results on the asphalt binder. This asphalt meet the requirements for original binder, _meet the requirements for RTFO aging and meet the requirements for PAV aging Original Binder DSR at 76 °C: G*=0.96 kPa, ô=65• RTFO Aged Binder Mass lost: 0.55 % DSR at 76 °C :G*=1.72 kPa, ô=54• PAV Aged Binder DSR at 31 •C : G*=8520 kPa, ô=37• BBR at -12 °C and 60 sec : Stiffness = 289 MPa , m-value = 0.281 DTT at -12 C : 2.2% does not, does not, does no does not, does, does not does not, does, does does, does, does not
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