Masters Theses

Abstract

"The two-cycle sieved slake durability test, performed on specimens initially oven-dried prior to testing, was determined to be the optimum slake durability testing procedure based on 12 variations of the test performed on 12 different shale types. The effects of changing slake durability testing variables was also studied.

Standard Proctor moisture-density and compaction-degradation tests were performed on 11 shales.

A modified version of the ultrasonic cavitation disaggregation test was developed and performed on 14 shales.

Richardson's shale durability rating equation was modified to include or reflect a data base of 14 shales, the results of the 20-min. ultrasonic cavitation disaggregation test, and the standard Proctor moisture-density relationship.

Questionnaires were circulated and an extensive literature search was conducted in an attempt to obtain data to correlate the modified Richardson shale durability rating system with field performance and to update the knowledge of current laboratory methods and classification systems for predicting the durability of shale in compacted embankments and subgrades. Useful new correlation data were not obtained and few sources with experience in predicting shale durability responded to the questionnaires. An intensive correlation study appears necessary to obtain additional useful correlation data. Key prospects for future studies and current laboratory methods and classification systems for predicting shale durability are cited.

Relationships between durability ratings, lift thicknesses, in-place permeability, and excavation methods were established from correlations between modified durability ratings of this study and Franklin ratings"-- Abstract, pp. ii-iii

Advisor(s)

Richardson, David Newton

Committee Member(s)

Schmidt, Norbert O., 1925-2009
Illegible Signature

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

University of Missouri--Rolla

Publication Date

Spring 1987

Pagination

xii, 192 pages

Note about bibliography

Includes bibliographical references (pages 148-152)

Rights

© 1987 John Dell Long, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 5481

Print OCLC #

16787582

Download

Share

 
COinS