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ASTM Selected Technical Papers
Testing Soil Mixed with Waste or Recycled Materials
By
MA Wasemiller
MA Wasemiller
1
Natural Resources Conservation Service
,
Wala Walla, WA 99352 Symposium chairman and coeditor
Search for other works by this author on:
KB Hoddinott
KB Hoddinott
editor
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ISBN-10:
0-8031-2470-8
ISBN:
978-0-8031-2470-7
No. of Pages:
350
Publisher:
ASTM International
Publication date:
1997

The strength gain in lime-fly ash mixtures begins only after a delay in time, which is due to the induction period for the reactions that take place between lime and fly ash particles. This research work studies this induction period using unconfined compressive strength (UCS) tests and differential scanning calorimetry (DSC) tests. Based on nucleation and diffusional growth theories, the induction period is qualitatively explained and the relevant equation for its quantitative prediction with regard to curing temperature is proposed. The suggested equation is evaluated using the UCS and DSC test results. It is concluded that the induction period can be predicted quantitatively and that accelerated curing can be used to estimate the induction period for any curing temperature. Furthermore, DSC tests can be used successfully for predicting the induction period.

1.
Abyaneh
,
M. Y.
, and
Jalali
,
S.
,
03
1989
, “
Derivation of Strength Gain/Curing Time Behaviour Using a Newly Developed Model for Lime-Fly Ash
.” Proceedings, 3o Encontro Nacional de Geotecnia,
Porto, Portugal
, Vol.
3
, pp. F15–24.
2.
Jalali
,
S.
,
1991
, “
A Study of Factors Affecting the Mechanical Behaviour of Lime-Fly Ash Mixtures
,” Ph.D. Thesis,
Coventry University
.
3.
Jalali
,
S.
,
1993
, “
Prediction of Delay Time in Strength Gain of Lime Fly Ash Mixtures
,” Proceedings Tenth International Ash Use Symposium,
Orlando, USA
, Vol.
2
, pp.56/1–12.
4.
Nabarro
,
F.R.N.
;
1940
,
Proceedings Royal Society
, Vol.
A175
, No.
519
.
5.
Nabarro
,
F.R.N.
;
1940
,
Proceedings Royal Society
, Vol.
52
, No.
90
.
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