By M. R. Smith, G. West, P. G. Fookes, J. Lay, I. Sims, L. Collis

In 1985, the Geological Society released Aggregates because the first quantity in its Engineering Geology detailed book sequence. It met with rapid acclaim, being provided the Brewis Trophy via SAGA in 1986 and drawing the subsequent evaluate from the Canadian Geotechnical magazine in 1988: This ebook is normally a well-researched, informative and important advisor to the site, sampling and trying out of aggregates. in case your paintings comprises using aggregates, purchase this booklet and skim no additional; this quantity may be a vital and precious reference that you're going to use for a few years. In 1989, the operating get together whose paintings had led to the book of Aggregates used to be reconvened to revise, replace and expand their file. every one bankruptcy was once reviewed by way of autonomous referees. the second one and vastly more suitable version, released in 1993 and reprinted in 1998, represented the distillation of an enormous physique of data and adventure held not just through the individuals of the operating occasion, but additionally by means of many foreign specialists, scientists and engineers who contributed as reviewers, referees and corresponding authors. additionally to be had: average Stone, Weathering Phenomena, Conservation innovations and Case stories - ISBN 1862391238 development Stone Decay: From prognosis to Conservation - detailed booklet no 271 (Geological Society distinctive book) - ISBN 1862392188 The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society on the planet, and one of many greatest publishers within the Earth sciences.The Society publishes quite a lot of top of the range peer-reviewed titles for lecturers and pros operating within the geosciences, and enjoys an enviable foreign acceptance for the standard of its work.The many components within which we submit in include:-Petroleum geology-Tectonics, structural geology and geodynamics-Stratigraphy, sedimentology and paleontology-Volcanology, magmatic reviews and geochemistry-Remote sensing-History of geology-Regional geology courses

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Additional resources for Aggregates: Sand, Gravel and Crushed Rock Aggregates for Construction Purposes, 3rd Edition (Geological Society Engineering Geology Special Pub. No.17)

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Bedding (parallel o, ~ ,o~ 8 l<~ c~c:~o<~,:,l depositionaltexture) withdiscretebedding planes,'flaggy' 4 ~ C~ withlongaxesof pebbles inclinedat bedding;matrixsupported angleto ,,o , o~ Heterogenousbed ~o~oiol of conglomerate polo ,-,o~;I containing lenses I c o0- 0~'~1 of sand and gravel I~ ~ o O 5 I~176 FIG. 3. Sedimentary structures in detrital deposits. Structures 2 and 6, and when truncated, 7 (see also Fig. 21), can indicate 'way up' (see text)9 After Sherbon Hills (1975). glaciofluvial environments and alluvial fans, deleterious constituents, such as mudflakes and fragments of coal and chalk, may remain and reduce the attractiveness of a prospective deposit for aggregate.

Pulverized fuel-ash (pfa) or fly-ash, a fine alumino-silicate dust derived from coal-fired electricity generating stations, is a constituent in the production of light-weight ('breeze') building blocks. Boulders of slate waste from slate quarrying have been used for armourstones in sea defence works on the North Wales coast (Fookes & Poole 1981; Dibb et al. 1983a, b). 4. Occurrenceof sand and gravel, and of conglomerates Sand and gravel deposits are accumulations of the more durable rock fragments and mineral grains which have been released from their parent rocks by physical weathering processes or abraded by the action of ice (glaciers) and then worn and sorted by water (rivers and waves) and the wind.

Problems arising from the lowering of water tables, the pollution of habitats through accelerating siltation and other environmental considerations are increasingly limiting these operations. The middle and lower reaches of many major rivers worldwide are the source of often large volumes of dredged sand suitable for many applications, especially land reclamation and sea defence schemes. 1. i . . . . . . . D r i f t filled f o r m e r r i v e r channel j : ~ ~ London Clay J Sea level Scour h o l l o w caused by eddies at s t r e a m confluence 0 Miles I I I 0 3 I i I ,I I kms .....

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