(a) What is SuperPave Method of mix design? What are the main advantages and disadvantage of SuperPave, Hveem, and Marshall method of mix design? (b) What is SuperPave Gyratory Compactor (SGC)? How SGC simulate actual field conditions in the laboratory? (c) SuperPave offers futuristic approach for the selection of binder to be used in asphalt pavements. Explain with examples?

(a) What is SuperPave Method of mix design? What are the main advantages and disadvantage of SuperPave, Hveem, and Marshall method of mix design? (b) What is SuperPave Gyratory Compactor (SGC)? How SGC simulate actual field conditions in the laboratory? (c) SuperPave offers futuristic approach for the selection of binder to be used in asphalt pavements. Explain with examples?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A sample of aggregate weighing of 3800g. 45.5% retaining on sieve No.4. and 48.5% it is retaining on sieve No 200. If bulk specific - gravities of coarse , fine and mineral filler aggregates are 2.59 , 2.66 , and 2.69 respectively, determine the optimum asphalt conten as a percentage of the total mix if results obtained using the Marshall method are shown in the table below. The specific gravity of the asphalt is 1.05. Given that the specifications required minimum Marshal Stability of ( 7kN ). Flow (2-4mm) and percent of air voids (3-5%). (Note: if the mix is not satisfy the requirement, please explain how to adjust it). Marsha test Weight of sample (gm) Asphalt content (%) Stability (kN) Flow (mm) In air In water 0.04 1260.4 716.3 6.25 2.9 0.045 1298.9 747.8 7.1 3.2 0.05 1127.7 652.9 7.9 3.8 0.055 1222.5 705.6 7.5 4.5 0.06 1182.6 679.8 5.9 6.05
.. is one of aggregate ..... ...... properties that have a significant effect in improving the interconnect between an aggregate particle and asphalt binder *
Please kindly answer 11 and 12... Please give me both answers... Thank you
The use of asphalt as a binder is closely related to the influence of temperature. Explain the definition and its effect on asphalt performance in terms of softening point and flash point.
The Marshall method was used to design an asphalt concrete mixture. A PG 64-22 asphalt cement with a specific gravity (Gp) of 1.031 was used. The mixture contains a 9.5 mm nominal maximum particle size aggregate with a bulk specific gravity (Gab) of 2.696. The theoretical maximum specific gravity of the mix (Gmm) at asphalt con- tent of 5.0% is 2.470. Trial mixes were made with average results as shown in the following table: Asphalt Content (P.) (% by Weight of Mix) Bulk Specific Gravity (Gmb) Corrected Stability (kN) Flow (0.25 mm) 4.0 2.360 6.3 4.5 2.378 6.7 10 5.0 2.395 5.4 12 5.5 2.405 5.1 15 6.0 2.415 4.7 22 Determine the design asphalt content using the Asphalt Institute design criteria for medium traffic (Table 9.15). Assume a design air void content of 4% when using Table 9.16.
CRITIC PATK o Na B: A coarse aggregate sample has been collected from a quarry to be used in a surface course asphalt mix, was tested in accordance to the Iraqi specification. The results are as shown below, is it comply with the specification and why? Test Property Percentage of wear, % Degree of crushing,% Flat and elongated pieces, % Soundness test with sodium sulfate, % Results 34 85 7 8
An asphalt sample which is claimed to be AC- 20 is tested by an agency. Which test result will reject the sample O Viscosity at 60•C on original sample = 1850 Poise Ductility at 25C on TFO aged sample = 27 cm Penetration at 25 •C = 51 O Viscosity at 60 C on TFO aged sample = 11250 Poise
I need answer within 20 minutes please please with my best wishes
Q4: Answer the following: 1- Why the solvent in extraction of asphalt test is not neglected? 2- What are the main advantages of Marshall method for design a HMA in Iraq? 3- What are the differences between job mix formula and job mix limits which listed in HMA design report? 4- Discuss the effects of mineral filler on the properties of asphalt mixture? 5- What are the suitable solutions that should be taken if one or more of Marshall asphalt mix properties are not in agreement with specifications limits?
I need the answer as soon as possible
The Superpave volumetric procedure has been widely implemented, with success- ful results. However, the method lacks a strength test to verify the suitability of the Superpave mixes. Research completed in NCHRP Project 9-19 developed "simple performance tests" for asphalt concrete (Witczak et al., 2002), currently called the Asphalt Mixture Performance Tester, AMPT, Figure 9.34. The AMPT is not currently a requirement for Superpave mix design, but implementation studies are underway. In addition, the test method was designed to capture the material properties needed for the Mechanistic Empirical Pavement Design System, MEPDS. The equipment and associated protocols of the AMPT tests are designed to cap- ture the viscoelastic behavior of asphalt concrete. Tests based on measurement of dynamic modulus (for both of permanent deformation and fatigue cracking), flow time (permanent deformation), and flow number (permanent deformation) were selected for further field validation. The three…
Explain briefly about Viscosity of Asphalt Binder by Rotational Viscometer and what is its significance & use?