Engineering Commons^™

Review Of Fly-Ash As A Supplementary Cementitious Material, Nikki Shaji, Niall Holmes Dr., Mark Tyrer

Conference papers

This paper presents a review of fly-ash as a Supplementary Cementitious Material (SCM) in concrete in terms of its effects on hydration and durability. The climate change agenda has focused the cement and concrete industry on using low embodied CO2 materials and much effort has been made on incorporating industrial by-products into cement as SCMs. With worldwide cement production (circa 4 billion tonnes) currently accounting for approximately 8% of global CO2 emissions and 7% of industry energy use, the use of suitable SCMs to partially replace cement in concrete is extremely important. However, while coal-fired power stations are in the …

Exploring The Roles Of Organic Matter Source And Transformation For Photochemical Characterization Of New York Lake Waters, Joseph Wasswa

Dissertations - ALL

Dissolved organic matter (DOM) is a critical component of aquatic systems that serves many purposes. Among them is the production of reactive intermediates (RIs) when irradiated with sunlight. Examples of RIs produced include the excited triplet states of dissolved organic matter (3DOM*), singlet oxygen (1O2), and hydroxyl radicals (•OH), all of which contribute to the degradation or inactivation of chemical or microbiological contaminants. It is therefore critical to understand how the sources and transformations of DOM may affect the production of RIs in sunlit aquatic systems.

The Adirondack Mountain region of New York, a historical hotspot for atmospheric sulfur and …

Correlations Between Dynamic Probe Blow Count And Undrained Shear Strength For Peat At A Well-Characterised Raised Bog In Ireland, David Mchugh, Ciaran Reilly, Juan Pablo Osorio

Articles

Peat deposits are generally heterogeneous, with large variations over small areas. Peat has an extremely high water content, high compressibility and low shear strength. This presents a major issue in studying the geomechanical behavior of peat. For this study, field and laboratory tests were conducted to establish the undrained shear strength (s_u) of peat at a cutover industrial peatland in Ireland which had been extensively characterized in the past. The new field work included TRL-type Dynamic Cone Penetrometer, Mackintosh probe and field vane shear tests. A correlation was developed between the Mackintosh probe “M-value” blow count and the …

Deriving Discrete Solid Phases From Csh-3t And Cshq End-Members To Model Cement Hydration In Phreeqc, Niall Holmes Dr., Colin Walker, Mark Tyrer, Denis Kelliher

Conference papers

This paper presents a cement hydration model over time using the CEMDATA thermodynamic database and a series of discrete solid phases (DSP) to represent calcium silicate hydrate (C-S-H) as a ternary (CSH-3T) and quaternary (CSHQ) solid solution. C-S-H in cement is amorphous and poorly crystalline with a range of molar Ca/Si ratios = 0.6-1.7 and displays strongly incongruent dissolution behaviour where the release of calcium into solution is several orders of magnitude greater than silicon. It is therefore important that any cement hydration model provides a credible account of this behaviour. C-S-H has been described in the CEMDATA thermodynamic database …

Optimising Existing Digital Workflow For Structural Engineering Organisations Through The Partnering Of Bim And Lean Processes, John Mclaughlin, Barry Mcauley

Conference Papers

Building Information Modelling (BIM) is now seen as one of the leading transformative processes within the Architectural, Engineering and Construction (AEC) sector and has the potential to assist in streamlining the structural design process. However, its practical implementation can often add another layer to the existing workflow and can result, to its detriment, in the primary objective of optimising structural workflows being hindered. This can lead to structural organisations producing 3D models in tandem with traditional drawings, a lack of human intervention regarding software interoperability, and a reluctance to move away from conventional work methods. This paper will explore how …

Modelling The Thermoelectric Properties Of Cement-Based Materials Using Finite Element Method And Effective Medium Theory, Lorenzo Stella, Conrad Johnston, Javier Troncoso, Piotr Chudzinski, Esther Orisakwee, Jorge Kohanoff, Ruchita Jani, Niall Holmes Dr., Brian Norton, Xiaoli Liu, Ming Qu, Hongxi Yin, Kazuaki Yazawa

Conference papers

Because of the thermoelectric (TE) effect (or Seebeck effect), a difference of potential is generated as a consequence of a temperature gradient across a sample. The TE effect has been mostly studied and engineered in semiconducting materials and it already finds several commercial applications. Only recently the TE effect in cement-based materials has been demonstrated and there is a growing interest in its potential. For instance, a temperature gradient across the external walls of a building can be used to generate electricity. By the inverse of the TE effect (or Peltier effect), one can also seek to control the indoor …

Improving The Reliability Of Visual Inspections Conducted By Environmental Health And Safety Professionals, On A Hyperscale Data Centre Construction Site, Alex A. Schouten, Victor Hrymak

Conference papers

The conduct of visual inspections on construction sites is of crucial importance for workplace safety. This is because visual inspection is the primary method by which construction site hazards are routinely observed, monitored and controlled. However, there is no consensus guidance as to how such visual inspections should be conducted. This is resulting in many observable hazards going unseen and therefore not being appropriately managed on construction sites worldwide. In an attempt to improve the reliability of visual inspection, this study presents results from an innovative method called systematic visual inspection which utilises an iterative set eye scan pattern during …

Between Resiliency And Adaptation, Catherine Joseph

IntAR Interventions Adaptive Reuse

No abstract provided.

Water As Medium Adapting Water Towers, Inge Donné, Bie Plevoets

IntAR Interventions Adaptive Reuse

No abstract provided.

A Metropolitan Park Of Water, Renzo Lecardane, Paola La Scala

IntAR Interventions Adaptive Reuse

No abstract provided.

Environmental Identity The São Paulo Rivers Case, Anne Schraidber

IntAR Interventions Adaptive Reuse

No abstract provided.

T-House Water As Medium In Interventions And Adaptive Reuse, Katherine Bambrick Ambroziak, Brian Ambroziak

IntAR Interventions Adaptive Reuse

No abstract provided.

The Blue Line Reusing Traditional Rural Water Management Systems, Francesco Garofalo

IntAR Interventions Adaptive Reuse

No abstract provided.

The Hammam Of Erbil Citadel A Confluence Of Past, Present, And Future, Ahmed Abbas, Karen Lens

IntAR Interventions Adaptive Reuse

No abstract provided.

(Re)Made By Water Obsolescence, Urban Nomadism And The New World Mall, Bangkok, Gregory Marinic

IntAR Interventions Adaptive Reuse

No abstract provided.

The Oyster Blocks Project Subaqueous Interventions For Non-Humans, Michael Leighton Beaman

IntAR Interventions Adaptive Reuse

No abstract provided.

Back To The Future The Spatial Dimension Of Water Management, Kees Lokman

IntAR Interventions Adaptive Reuse

No abstract provided.

The Edge Condition Re-Use Of Industrial Heritage On Urban Waterfronts, Graeme Evans, Naomi House

IntAR Interventions Adaptive Reuse

No abstract provided.

Breathe, Look, Stand Up The Second Life Of Water Infrastructure, Lindsay Winstead

IntAR Interventions Adaptive Reuse

No abstract provided.

The Tears Of The U.S.S. Arizona A Tomb That Lives, Alexander Ford, Nicholas Gervasi

IntAR Interventions Adaptive Reuse

No abstract provided.

Picturing Space The Manipulation Of Architectural Imagery, Jeffrey Katz

IntAR Interventions Adaptive Reuse

No abstract provided.

Converging In Space Art, Architecture, And Urbanism In P.S. 1’S Rooms Exhibition, Cecilia Thornton-Alson

IntAR Interventions Adaptive Reuse

No abstract provided.

Figural Identity In Adaptive Reuse Preserved, New, And Hybrid, Marie S.A. Sorenson

IntAR Interventions Adaptive Reuse

No abstract provided.

From Rust To Reuse From Building To Community Through Instrument Making, Zeke Leonard

IntAR Interventions Adaptive Reuse

No abstract provided.

The Butterfly Effect Artist Itinerancy And Adaptive Reuse, Marion Wilson

IntAR Interventions Adaptive Reuse

No abstract provided.

Singularities Of Place, Elizabeth G.M. Parker

IntAR Interventions Adaptive Reuse

No abstract provided.

Design, Subjectivity, And Culture Notes On Productions, Clay Odom

IntAR Interventions Adaptive Reuse

No abstract provided.

Coming Home A Conversation With Do Ho Suh, Lea Hershkowitz

IntAR Interventions Adaptive Reuse

No abstract provided.

What Once Was, Jenna Balute

IntAR Interventions Adaptive Reuse

No abstract provided.

Constructing "Documenta", Mariel Villeré

IntAR Interventions Adaptive Reuse

No abstract provided.