THE INFLUENCE OF RANDOMLY ORIENTED HAIR FIBRE AND LIME ON THE CBR VALUE OF DADRI FLY ASH

AKHTAR J.N.*,ALAM J.,AHMAD SH.

* DEPARTMENT OF CIVIL ENGINEERING, UNIVERSITY POLYTECHNIC, A. M. U. ALIGARH 202002, INDIA


The objective of the experimental work is to study the influence of Fly ash mixed with lime having varying percentage of hair fibres on California Bearing Ratio values. The randomly oriented hair fibres were, 1.00, 1.50, 2.00 and 2.50% of cement by weight respectively. Thermal power plants generated different types of Fly ash. Fly ash is the most abundant of all the residues and its disposal not only needs enormous land, water and power resources but it also causes serious environmental hazards. In India about 82 such Power Plants produce nearly 106 million tons of Fly ash per year [1] and the Figure is likely to soar. This alarming increase in the production of Fly ash and its disposal in ecologically suitable manners has lately become a global concern. Efforts are being made to increase the use of Fly ash in every possible way. In this struggle scientists and engineers especially civil engineers are playing a remarkable role. A number of studies have been carried out to determine the influence of fibres on the physical properties of soil and Fly ash with and without Lime. However, no study has been found so far in the literature to investigate the effect of randomly oriented hair fibres on Flyash mixed with lime. In this paper, results of an experimental study have been presented to determine the effect of randomly oriented Hair fibres in Fly ash and lime on the value of California Bearing Ratio and found encoraging.


Keyword: FLY ASH, HAIR FIBRES, CBR TEST, PROCTOR’S COMPACTION TEST
ASIAN JOURNAL OF CIVIL ENGINEERING (BUILDING AND HOUSING) 2008; 9(5):505-512.

http://sid.ir/en/VEWSSID/J_pdf/103820080502.pdf

Advances in Transportation Geotechnics: Proceedings of the International Conference held in Nottingham, UK, 25-27 August 2008


Advances in Transportation Geotechnics: Proceedings of the International Conference held in Nottingham, UK, 25-27 August 2008
By Ed Ellis

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Publisher: CRC
Number Of Pages: 786
Publication Date: 2008-08-01
ISBN-10 / ASIN: 0415475902
ISBN-13 / EAN: 9780415475907
Binding: Hardcover


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Product Description:

Highways provide the arteries of modern society. The interaction of road, rail and other transport infrastructure with the ground is unusually intimate, and thus needs to be well-understood to provide economic and reliable infrastructure for society. The challenges include not only the design of new infrastructure (often on problematic ground), but increasingly the management and maintenance of aging assets in the face of issues such as climate change. This book is the written record of the first International Conference on Transportation Geotechnics held under the auspices of the International Society of Soil Mechanics and Geotechnical Engineering, held in Nottingham, UK, in 2008.It comprises about 100 papers from a global selection of researchers and practitioners on: slope instability, stabilisation, and asset management; construction on soft ground; interaction with structures and geogrid reinforced soil; effect of climate change and vegetation; highways, pavements and subgrade; railway geotechnics; soil improvement; and characterisation and recycling of geomaterials. A further part of this collection contains papers on unbound aggregate materials as used in pavement construction and drainage. They formed the "Unbound Aggregates in Roads (UNBAR7)" theme of the conference which followed on from the previous symposia of that title, also held in Nottingham, UK, most recently in 2004. The volume will be of interest to professionals and academics in geotechnical, highway, railway and general civil engineering.



rar'd pdf with cover & bookmarks, 17.96 MB

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A BOUNDARY ELEMENT ANALYSIS OF SOIL-PILE INTERACTION UNDER LATERAL CYCLIC LOADING IN SOFT COHESIVE SOIL

BASACK S.*

* DEPARTMENT OF APPLIED MECHANICS, BENGAL ENGINEERING AND SCIENCE UNIVERSITY, SHIBPUR, HOWRAH 711103, INDIA


The environment prevalent in ocean necessitates the piles supporting offshore structures to be designed against lateral cyclic loading initiated by wave action. Such quasi-static load reversal induces deterioration in the strength and stiffness of the soil-pile system introducing progressive reduction in the bearing capacity associated with increased settlement of the pile foundation. To understand the effect of lateral cyclic load on axial response of single pile in soft clay, a numerical model has been developed. The theoretical results are compared with the available experimental results so as to validate the theory. This paper presents a brief description of the methodology developed, analysis and interpretations of the theoretical results obtained and the relevant conclusions drawn there from.


Keyword: AMPLITUDE, COHESIVE SOIL, CYCLIC LOAD, FREQUENCY, PILE
ASIAN JOURNAL OF CIVIL ENGINEERING (BUILDING AND HOUSING) 2008; 9(4):379-390.

http://sid.ir/En/VEWSSID/J_pdf/103820080401.pdf