Title page for ETD etd-06102012-040113

Type of Document Master's Thesis
Author Ahmed, Naseem
URN etd-06102012-040113
Title Evaluation of different treatments to improve the durability of concrete having deleterious chert particles as its coarse aggregate
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Walker, Richard D. Committee Chair
Gray, George A. Committee Member
Morris, Henry M. Committee Member
Payne, William W. Committee Member
  • Frost resistant concrete.
Date of Defense 1964-09-05
Availability restricted

On the basis of freezing and thawing tests of air-entrained concretes having poor quality cherts as course aggregates subjected to three different treatments for improving durability, the following conclusions have been derived:

1. Removal of cherts lighter than the BSSD specific gravity of 2.5 by heavy liquid definitely improved the durability of the concrete.

2. Combining 50 percent durable aggregate (1/2"-1/4" size) with 50 percent cherts (1"-1/2" size) did not show any significant improvement in durability over that containing 100 percent chert.

3. As much as 12 percent chert could be blended with durable aggregate without an appreciable reduction in durability.

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