Optimum use of material: selection of limits for suitable earthworks fill: Irish experience

Rutty, P; Johnston, T. P.

doi:10.1144/egsp26.10

Cited by 3 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 9% cement mix provided the largest increase in UCS with an improvement from 0.5 MPa to 3 MPa. The acceptability of soils in engineering works, from an Irish perspective [12], is based on the interpretation of BS5930 [13]) and an analysis of case studies. In summary, soils with strength less than 40 kPa are unacceptably weak, soils with strength less than 50 kPa are considered acceptable for short term stability, and materials with strength of 75 kPa or more are generally considered acceptable for earthworks in construction projects.…”

Section: Introductionmentioning

confidence: 99%

An Investigation into the Suitability of GGBS and OPC as Low Percentage Single-Component Binders for the Stabilisation and Solidification of Harbour Dredge Material Mildly Contaminated with Metals

O’Shea

Gray

Murphy

2019

JMSE

View full text Add to dashboard Cite

The occurrence of contaminated materials encountered during harbour dredging is becoming increasingly problematic for harbour and port authorities. The risks to human health, wildlife and port infrastructure of exposure to such contaminants necessitates the removal or containment of such risks. As with contaminated terrestrial sites the solidification and stabilization (S/S) of this material has been proven to be an effective alternative to disposing of contaminants off-site, typically via dumping at sea or in a landfill. Research, to date, on S/S has been focused on heavily contaminated sediments in large industrial ports. However, with tightening environmental regulations, the limits of acceptable contamination are generally decreasing. This means the number of port dredging projects requiring contaminant remediation is increasing. There is now a need to examine the effectiveness of S/S on harbour sites that are mildly contaminated from both an environmental and project feasibility viewpoint. To that end, this study examines the effectiveness of various S/S mix percentages of ordinary Portland cement (OPC) and ground granulated blast furnace slag (GGBS) in retarding the leaching of contaminants from a mildly contaminated harbour site.

show abstract

Section: Introductionmentioning

confidence: 99%

An Investigation into the Suitability of GGBS and OPC as Low Percentage Single-Component Binders for the Stabilisation and Solidification of Harbour Dredge Material Mildly Contaminated with Metals

O’Shea

Gray

Murphy

2019

JMSE

View full text Add to dashboard Cite

show abstract

Chapter 8 Design and construction considerations

Winter

Troughton

Bayliss³

et al. 2017

EGSP

View full text Add to dashboard Cite

Relict glacial and periglacial environments are widespread, and the deposits that they are associated with mean it is inevitable that the design and construction of many projects will be influenced by their presence and nature. Tills and other glaciogenic deposits prove to be particularly challenging in this context for reasons that include: the spatial variability of the nature of the deposits; the wide range of particle sizes often included within a given soil, including large-sized particles; spatial variation in soil type and properties; variation in depth to rockhead and variable degrees of weathering and alteration; the presence of groundwater, that is misinterpreted as perched water, as well as sub-artesian and artesian conditions; the presence of solution features and fissures, partly or completely infilled with soft or loose material; and the presence of (often shallow) shear surfaces at residual strength. In this chapter, some of the more common problems and associated solutions associated with earthworks and man-made slopes, tunnels and underground structures, dams and reservoirs, foundations, and offshore engineering and installations are reviewed. It is important that great care is taken in addressing the influences of variability, complexity and uncertainty inherent in glacial/periglacial soil formations at all stages of the construction process, from feasibility to end-of-project activities, such as preparation of the as-built drawings.

show abstract

The 1st Hanrahan Lecture: Geotechnical properties of Irish glacial and interglacial soils

Farrell

2024

QJEGH

View full text Add to dashboard Cite

This paper reviews the current state-of-the-art in relation to geotechnical design in unsorted till deposits, commonly called Boulder clays by engineers or diamictons by geologists, generally taking the topics discussed by Prof. Eamon Hanrahan in his seminal work on Irish tills of 1977. These topics include the permeability, stiffness, and consolidation characteristics of these deposits, together with their undrained and drained behaviour. The geological background to the deposition of these tills is discussed and the available information on the presence of interglacial soils around the country is presented. Where possible, the practical experience from working with these deposits is compared with predictions made from field or laboratory test results, for example, in settlement assessment of foundations, slope stability and in earthworks. Whilst most of Ireland is covered with stony Boulder clays, which is the main topic of the paper, the geotechnical parameters of a fine grained till encountered on the east coast, known as Irish Sea till or colloquially as Macamore Clay, are discussed and the implications of this on slope stability is investigated.

show abstract

Optimum use of material: selection of limits for suitable earthworks fill: Irish experience

Cited by 3 publications

References 8 publications

An Investigation into the Suitability of GGBS and OPC as Low Percentage Single-Component Binders for the Stabilisation and Solidification of Harbour Dredge Material Mildly Contaminated with Metals

An Investigation into the Suitability of GGBS and OPC as Low Percentage Single-Component Binders for the Stabilisation and Solidification of Harbour Dredge Material Mildly Contaminated with Metals

Chapter 8 Design and construction considerations

The 1st Hanrahan Lecture: Geotechnical properties of Irish glacial and interglacial soils

Contact Info

Product

Resources

About