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Inherent Complexities in Weathered Rocks: A Case of Volcanic Rocks
https://orcid.org/0000-0003-1115-7479
Abstract This work presents the complex nature of weathered geomaterials by investigating the influences of geological features (textural, mineralogical, in situ specific volume, strength, structure) of parent rocks on weathering of decomposed volcanic rocks in the reconstituted and intact states. This was done by vertically comparing samples of the same weathering degrees but belonging to different formations and horizontally by comparing samples of different weathering degrees that belong to different formations. This is very important due to complex nature of geology and weathering processes of volcanic rocks. This was achieved through comprehensive physical and index tests, microstructure and mineralogical analyses, oedometer and triaxial tests as well as analyses of previous studies. Geological characters of parent rocks have been found to affect grading and index properties, mineralogy, compressibility, in-situ behaviour and strength. However, fabrics of decomposed volcanics are not parent geological features dependent and parent geological characters do not influence the effects of structure using both stress sensitivity and normalisation for volume. Based on these, geological and geotechnical properties of samples from different formations could be characterised separately to obtain parameters needed for engineering design and constructions. However, two geological units can be combined into the same geotechnical unit because physical, textural and mineralogical features lead to similar mechanical behaviour.
Inherent Complexities in Weathered Rocks: A Case of Volcanic Rocks
https://orcid.org/0000-0003-1115-7479
Abstract This work presents the complex nature of weathered geomaterials by investigating the influences of geological features (textural, mineralogical, in situ specific volume, strength, structure) of parent rocks on weathering of decomposed volcanic rocks in the reconstituted and intact states. This was done by vertically comparing samples of the same weathering degrees but belonging to different formations and horizontally by comparing samples of different weathering degrees that belong to different formations. This is very important due to complex nature of geology and weathering processes of volcanic rocks. This was achieved through comprehensive physical and index tests, microstructure and mineralogical analyses, oedometer and triaxial tests as well as analyses of previous studies. Geological characters of parent rocks have been found to affect grading and index properties, mineralogy, compressibility, in-situ behaviour and strength. However, fabrics of decomposed volcanics are not parent geological features dependent and parent geological characters do not influence the effects of structure using both stress sensitivity and normalisation for volume. Based on these, geological and geotechnical properties of samples from different formations could be characterised separately to obtain parameters needed for engineering design and constructions. However, two geological units can be combined into the same geotechnical unit because physical, textural and mineralogical features lead to similar mechanical behaviour.
Inherent Complexities in Weathered Rocks: A Case of Volcanic Rocks
https://orcid.org/0000-0003-1115-7479
Abstract This work presents the complex nature of weathered geomaterials by investigating the influences of geological features (textural, mineralogical, in situ specific volume, strength, structure) of parent rocks on weathering of decomposed volcanic rocks in the reconstituted and intact states. This was done by vertically comparing samples of the same weathering degrees but belonging to different formations and horizontally by comparing samples of different weathering degrees that belong to different formations. This is very important due to complex nature of geology and weathering processes of volcanic rocks. This was achieved through comprehensive physical and index tests, microstructure and mineralogical analyses, oedometer and triaxial tests as well as analyses of previous studies. Geological characters of parent rocks have been found to affect grading and index properties, mineralogy, compressibility, in-situ behaviour and strength. However, fabrics of decomposed volcanics are not parent geological features dependent and parent geological characters do not influence the effects of structure using both stress sensitivity and normalisation for volume. Based on these, geological and geotechnical properties of samples from different formations could be characterised separately to obtain parameters needed for engineering design and constructions. However, two geological units can be combined into the same geotechnical unit because physical, textural and mineralogical features lead to similar mechanical behaviour.
Inherent Complexities in Weathered Rocks: A Case of Volcanic Rocks
Okewale, Ismail Adeniyi (author) / Grobler, Hendrik (author)
2021
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
Characterization of weathered volcanic rocks in Hong Kong
| British Library Online Contents | 1999
Characterization of weathered volcanic rocks in Hong Kong
| Online Contents | 1999
Engineering Behaviour and Classification of Weathered Rocks
| British Library Conference Proceedings | 1996
| Landolt-Börnstein / Springer Materials | 1982