Evaluation of Fly Ash Test Sites Using a Simplified Elastic Theory Model and Field Measurements

Alam, S. M.; Little, D. N.; Ledbetter, W. B.

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Evaluation of Fly Ash Test Sites Using a Simplified Elastic Theory Model and Field Measurements

1984-03-01
By Alam, S. M. ; Little, D. N. ; Ledbetter, W. B.

File Language:

English

Details

Creators:

Alam, S. M. ; Little, D. N. ; Ledbetter, W. B.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Bessel Functions Dynaflect Elastic Analysis Evaluation Field Strength Fly Ash Layered Soils Stiffness Structural Supports Testing
Publication/ Report Number:

FHWA/TX-85/08+240-4F
Resource Type:

Tech Report
Geographical Coverage:

United States ; Texas
Edition:

Final Report: September 1978 - March 1984
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

This report summarizes the evaluation of 8 experimental fly ash test sites located on selected Texas Highways. The analysis utilized Dynaflect measured field deflections and a new method for characterizing lime-fly ash stabilized pavement structures. The method was developed utilizing a "simplified elastic theory" model and is most cost effective for analyzing a large number of field measured data. Each test site in the study consisted of several test sections of differing designs. For low PI clayey soils (6 sites), it was found that lime is essential, with the fly ash, for development of effective structural support in the stabilized layers. The optimum lime-fly ash ratios found, for low PI clayey soils, were 0.08 to O.5 using a minimum of 2% lime. Substantial gains in the stiffness of the stabilized layers were noted when 20% to 40% fly ash, with no lime, was used with very low PI coarse sandy soils (1 site).
Format:

PDF
Funding:

2-9-79-240
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:96d32192476f02d4cdd8bddca115f14048cb1aeb9be7ba1c459f167a668e127b8bb656c72330d1cc74c206eedacb64b28bc6e4726f7242fea7e3b7366e865580
Download URL:

https://rosap.ntl.bts.gov/view/dot/85140/dot_85140_DS1.pdf
File Type:

[PDF - 3.72 MB ]

File Language:

English

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