Answered: Discuss the aging that occurs in…

Discuss the aging that occurs in asphalt cement during mixing with aggregatesand in service. How can the different types of aging of asphalt cement besimulated in the laboratory?

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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Discuss the aging that occurs in asphalt cement during mixing with aggregates
and in service. How can the different types of aging of asphalt cement be
simulated in the laboratory?

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According to ACI 211 we require a mix with a mean 28-day compressive strength (measured on standard cylinders) of 40MPa and a slump of 25 mm, Q1 ordinary Portland cement being used. The maximum size of well-shaped, angular aggregate is 10 mm, its bulk density is 1700 kg/m3, and its specific gravity is 2.7. The available fine aggregate has a fineness modulus of 2.60 and a specific gravity of 2.58. No air entrainment is required.
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