EngineeringGeology v4 1970 AlteraçãoRochaImplicaçõesEngenhariaFundações Revisão...
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Engineerin g Geology - Elsevier Publishing Company, A msterdam - Printed in The Netherlands eview A REVIEW OF THE RELATIONSHIP OF ROCK WEATHERING AND CLIMATE AND ITS SIGNIFICANCE TO FOUNDATION ENGINEERING M. K. S AU NDERS AND P. G. FOOKES Engineering Geology Division, Geology Department, Imperial College, Lo ndo n Great Britain) Received February 27, 1970) SUMMARY This paper is a preliminary review of the large field embraced by climate and engineering aspects of the weathering of rock. Factors affecting weathering and the development of residual soils in general and their relationship to the engineering classifications of weathered materials are briefly discussed. The development of residual soils within four principal climatic zones of the world: periglacial, temperate, arid and humid tropical, is examined in more detail. The engineering behaviour of the residual soils in these zones is reviewed and compared, firstly by considering the engineering properties of the various soils and secondly by their performance as foundation material. The results of the review are summarised in the form of tables and figures. It is concluded from the work that generalized knowledge of climate and engineering behaviour of weathering rock and residual soils is helpful in the planning of engineering projects and in the economic design of site investigations, but it is emphasised each site must be investigated on its own merits. INTRODUCTION The assessment of rock weathering is a problem which repeatedly faces the engineer in foundation design. A layer of residual soil and weathered rock generally to understand the behaviour of these materials; for example, in the consideration of the stability of slopes or in the design of retaining walls. In the case of shallow foundations, the strength and consolidation characteristics for bearing capacity and settlement calculations are generally more relevant, though the study of deep weathering characteristics is still important. Over recent years much work has been done on understanding the weathering process including the chemistry of decomposition, the effect of climatic conditions, the pedological and engineering classification of the weathered products and their significance to construction engineering. It is the purpose of this paper, therefore to attempt a preliminary review of this subject and to discuss briefly the processes Eng. Geol. 4 1970) 289-325
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