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Influence of degree of saturation on soil nail pull-out resistance in compacted completely decomposed granite fill. Li-Jun Su, a Terence C.F. Chan, b Y.K. Shiu, b Tony Cheung, c Jian-Hua Yin a. a The Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
This paper describes the outcome of a study on rain infiltration into decomposed granite which is one of the two main types of soils found in Hong Kong. It consists of the development and verification of a finite element based numerical model which has general applicability for flow through unsaturated porous media, application of the model for predicting moisture movement in an artificial ...
To investigate the bond yield characteristics of undisturbed completely decomposed granite (CDG) which is widely distributed in Southern China, a series of conventional drained tests were conducted. From the test data, some insights are obtained as follows: for undisturbed CDG soils, the bond yield point during shearing could be identified on the curve of the normalized tangential stiffness ...
Numerical and experimental studies of pressure-controlled cavity expansion in completely decomposed granite soils of Hong Kong S.Y. Wanga,⇑, D.H. Chanb,1, K.C. Lamc,2, S.K.A. AUd,3 a Centre for Geotechnical and Materials Modelling, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia
This was accompanied by the intrusion of granite magmas. The older rocks in Hong Kong were strongly deformed. From about 200 to 80 million years ago, a convergent margin tectonic setting developed along the southeastern coast of China. In the Hong Kong region, active volcanoes erupted ash and lava between about 165 and 140 million years ago.
Completely Decomposed Granite (CDG) is one of the most typical soils found in Hong Kong. However, limited attention has been given on the effect of fines content on its engineering properties. A series of laboratory tests was conducted to examine the effect of fines content, varying from 0 - 20%, on the engineering properties of CDG.
Cement S Ilized Decomposed Granite ... See more Concrete and granite countertops typically cost about the same (more on prices later), but that's really where the similarities end. Concrete is basically a mix of cement and an aggregate. ... limestone that . ... Two people were killed when a school bus mounted a pavement in a crowded Hong Kong ...
In this paper, the shearing behavior of completely decomposed granite soil and steel interfaces is examined using a modified suction-controlled direct shear apparatus. A series of direct shear tests was performed on two different types of soil-steel interfaces under different stress state variables.
The influence of wetting on the dynamic properties of completely decomposed granite in Hong Kong . Authors: Chan, Man Yiu : Issue Date: 2002: Summary: Completely decomposed granite (CDG) is a common soil, and hence a common geomaterial, in Hong Kong and many others countries around the world. In the light of the fact that the literature on its ...
Confined groundwater zone and slope instability in weathered igneous rocks in Hong Kong Jiu J. Jiaoa,*, Xu-Sheng Wangb, Subhas Nandya aDepartment of Earth Sciences, the University of Hong Kong, Pokfulam Road, Hong Kong, China bSchool of Water Resources and Environment, China University of Geosciences, Beijing, China Received 17 June 2004; received in revised form 30 December 2004; .
In his 1893 book, "Our Island – A Naturalist's Description of Hong Kong" (Figure 3) (at that time, Hong Kong consisted only of Hong Kong Island, a portion of the Kowloon Peninsula south of Boundary Street, and Stonecutter's Island), S.B.J. Skertchly recognized that granite and volcanic rocks, including feldspathic quartz porphyry, formed ...
The distance between the normal compression line and critical state line is larger for the S/F specimens than for the D/MT specimens. For residual soils like Hong Kong completely decomposed granite, which contains a significant amount of fines, it therefore seems necessary to understand the potential differences caused by different preparation ...
The proposed SWSPS is located along Chung Kong Road, Sheung Wan, Hong Kong. The footprint area of the pumping station structures measured approximately 56m long and 43m wide, whereas the ground level is approximately +4mPD. The SWSPS is surrounded by various structures, which are sensitive to ground movement. To the north is a vertical seawall,
of large-diameter bored piles in Hong Kong granitic saprolites S.-C.R. Lo and K.S. Li Abstract: The skin friction of large-diameter bored piles in Hong Kong granitic saprolite manifested high variability. ... decomposed granite and increasing to 200 for highly decom-posed granite. The mass permeability is of the order of 10–5 to 10–7 m/s ...
Engineering Geology, 19 (1982/83) 81--94 81 Elsevier Science Publishers B.V,, Amsterdam -- Printed in The Netherlands ENGINEERING PROPERTIES OF FRESH AND DECOMPOSED IGNEOUS ROCKS FROM HONG KONG PETER LUMB Civil Engineering Department, University of Hong Kong (Hong Kong) (Received July 22, 1982; revised version accepted January 25, 1983) ABSTRACT Lumb, P., .
HONG KONG (Reuters) — Hong Kong's opposition camp set up polling booths across the Chinese-ruled city on Saturday for primary elections aimed at selecting democracy candidates who stand the best
Influence of relative compaction on the hydraulic conductivity of completely decomposed granite in Hong Kong Jian-Hua Yin a a Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China (e-mail: [email protected]).
The CDG soil is a common type of slope soils in Hong Kong. A pull-out box apparatus is designed by the author in order to perform laboratory pull-out tests, allowing a sealed condition for the pull-out test of a grouted nail on a water submerged soil with a vertical stress up to 300kPa imposed on the testing soil.
large diameter bored piles founded in hong kong decomposed granite. The use of large diameter bored pile founded in decomposed granite began in the ... Water table at ground level and the buoyant unit weight of concrete was . »More detailed
overlie alluvium and completely decomposed granite. The rock along the Main Tunnel alignment is Shatin granite with occasional intrusions of fine to medium grained granite dykes and basalt dykes. The water table generally lies within 1 to 2 m of the existing ground level and the maximum hydrostatic pressure at the tunnel invert is around 4.2 bar.
The land area of Hong Kong is 1101 km2 with a population of 6.9 million. In Hong Kong's geology, the main rock type is granite, approximately 90%. The weathering of the rock has resulted in completely decomposed granite (CDG) soil in the most land area. Therefore, the CDG is commonly encountered in most projects in Hong Kong,
Report Title : An Evaluation of the Suitability of Decomposed Granite as Foundation Backfill for Gravity Seawalls in Hong Kong (1993), 34 p. (Reprinted, 1995) ... to determine if decomposed granite can be used to replace marine sand as the foundation backfill for gravity seawall in Hong Kong. It consists of a review of the available literature ...
Industrial clays, geosynthetics and grouting are proven solutions frequently used for similar applications. To provide a sustainable and low-cost solution to create an engineered water repellent soil, this study explored how Tung oil, a Chinese traditional vegetation oil, affected a Hong Kong completely decomposed granite (CDG).
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