NDLI: The unique relationship between swell percent and swell pressure of compacted clays

Content Provider	Springer Nature Link
Author	Erzin, Yusuf Gunes, N.
Copyright Year	2013
Abstract	Expansive soils exhibit high volumetric deformations, posing a serious threat to the stability of structures and foundations. However, measurement of swelling properties is time consuming and requires special and expensive equipment. This study made an attempt to investigate the relationship between these parameters and easily obtained soil properties using various clay mineral mixtures to obtain soils in a wide range of plasticity indices. Free swell percent was correlated to clay percent, water content, dry unit weight, plasticity index, liquidity index and cation exchange capacity using multiple regression analyses. A very high (R = 0.94) fit was also found for a proposed relationship between the percent swell and swell pressure values for samples having a swell pressure ≤300 kPa. It is concluded that the proposed equations offer a rapid and inexpensive substitute for laboratory testing of swell percent/swell pressure in the preliminary stages of site investigations.Les sols gonflants présentent des potentiels de gonflement importants, ce qui constitue une menace sérieuse pour la stabilité des structures et des fondations. La mesure des propriétés de gonflement demande beaucoup de temps et nécessite un équipement spécial et coûteux. Cet article présente une tentative pour relier ces paramètres de gonflement à des propriétés simples des sols, utilisant divers mélanges argileux couvrant une large gamme d’indices de plasticité. Le gonflement libre a été corrélé avec la teneur en argiles, la teneur en eau, le poids spécifique sec, l’indice de plasticité, l’indice de liquidité et la capacité d’échange de cations, utilisant les techniques d’analyse par régression multiple. Un coefficient de corrélation élevé (R = 0,94) a été trouvé pour une relation proposée entre le gonflement libre et les valeurs de pressions de gonflement pour des échantillons présentant une pression de gonflement inférieure à 300 kPa. L’équation proposée permet ainsi d’obtenir un substitut rapide et économique à des expériences de laboratoire plus élaborées dans les stades préliminaires de reconnaissance des terrains.
Starting Page	71
Ending Page	80
Page Count	10
File Format	PDF
ISSN	14359529
Journal	Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur
Volume Number	72
Issue Number	1
e-ISSN	14359537
Language	English
Publisher	Springer-Verlag
Publisher Date	2013-02-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bentonite Kaolinite Indice de liquidité Essais de gonflement libre Pourcentage de gonflement Pression de gonflement Geotechnical Engineering & Applied Earth Sciences Geoengineering, Foundations, Hydraulics Geoecology/Natural Processes Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

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