EFFECT OF ELAPSE TIME AFTER MIXING ON THE PROPERTIES OF STABILIZED LATERITE
EFFECT OF ELAPSE TIME AFTER MIXING ON THE PROPERTIES OF STABILIZED LATERITE
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Date
1996-01
Authors
KATTE, Valentine Yato
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Abstract
The results obtained from the investigation of the effect of cement and time on the
properties of laterite soil with respect to the elapse time after mixing as well as the compactive
energy levels (Proctor and West African) are highlighted. The material was classified as an A-7-6
soil according to AASHTO classification system and was treated with 0%, 3%, 5% and 8%
stabilizer contents. Tests such as the X-Ray diffraction (XRD). Differential Thermal Analysis
(DTA) and specific gravity were carried out on the untreated laterite while particle size
distribution, Atterberg limits, compaction tests, unconfined compressive strength (UCS) and
California Bearing Ratio (CBR) were performed at elapse periods of 0.0, 0.5, 1.0, 1.5, 2.0, 2.5
and 3.0 hours on both the treated and untreated laterite.
The results of the X RD and DTA show that Kaolinite is the predominant clay mineral in
the soil. Stabilization improved the above mentioned properties with changes observed which
differ from that of the untreated laterite.
Increase in elapse time after mixing caused reductions in the values of the test result. The
Highway Research Board (1943) requirements, Millard and O'Reilly (1965) criterion of free flow
and the Nigerian General Specification for Roads and Bridges (1970) were used to evaluate the
suitability of the stabilized laterite for use as a pavement material at the various elapse times
Description
A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU
BELLO UNIVERSITY, ZARIA. IN PARTIAL- FULFILMENT OF THE
REQUIREMENT FOR THE DEGREE OF MASTER OF SCIENCE IN
GEOTECHNICS
DEPARTMENT OF CIVIL ENGINEERING
FACULTY OF ENGINEERING
AHMADU BELLO UNIVERSITY
ZARIA, NIGERIA
January 1996
Keywords
ELAPSE,, TIME AFTER,, MIXING,, STABILIZED,, LATERITE