Architecture Commons^™

Water Film Depth Prediction Model For Highly Textured Pavement Surface Drainage, Alireza Pourhassan, Ahmed A. Gheni, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Water film depth (WFD) is an important factor for road traffic safety because of its direct connection with skid resistance, hydroplaning speed, and the tendency of splash and spray. Increasing the pavement macrotexture reduces WFD. However, existing models for WFD prediction have not been developed on highly textured surfaces such as chip seal. Furthermore, the rainfall intensities used for developing most of these models were relatively low, leaving no or low WFD on chip seal surfaces. To propose a WFD prediction model suitable for highly textured surfaces and to consider the effect of surface material type, an experimental study was …

Novel Tri-Viscous Model To Simulate Pumping Of Flowable Concrete Through Characterization Of Lubrication Layer And Plug Zones, Tooran Tavangar, Masoud Hosseinpoor, Ammar Yahia, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this study, computational fluid dynamics (CFD) was employed to simulate the pipe flow of 18 self-consolidating and four highly workable concrete mixtures in a 30-m long pumping circuit. Pressure loss (ΔP) in 100- and 125-mm diameter (DP) pipelines was measured under low (1.2–6.2 l/s) and high (8.1–16.4 l/s) flow rates (Q). The numerical simulation was successfully carried out using a two-fluid model and a new variable-viscosity single-fluid approach, namely double-Bingham and tri-viscous models, respectively. The radial variation of rheological properties of the concrete across the pipe section, representing the plug flow, sheared concrete, and lubrication layer (LL) zones was …

Setting Times Of Early-Age Mortars Determined From Evolution Curves Of Poisson’S Ratio, Bate Bate, Xiao Chen, Chao Chen, Hongyan Ma, Jianfeng Zhu, Junnan Cao, Jiakai Chen, Kamal Khayat, Shuai Zhang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Setting times, as the early-age properties of cement-based materials, are important properties to ensure the quality and long-term performance of engineering structures. To determine the initial and final setting times of cementitious materials, the compressive wave velocity and shear wave velocity of six early-age mortar samples were monitored. Their time evolution curves of Young's modulus, shear modulus, bulk modulus, and Poisson's ratio were then calculated and analyzed. The signature times of the derivatives of the Poisson's ratio evolution curves correlate well with the initial and final setting times, and the remarkably high coefficient of determination values relative to the data …

Viscosity Modifying Agents: Key Components Of Advanced Cement-Based Materials With Adapted Rheology, Hela Bessaies-Bey, Kamal Khayat, Marta Palacios, Wolfram Schmidt, Nicolas Roussel

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Viscosity modifying agents (VMAs) are essential ingredients for the production of flowable cement-based materials. This paper presents an overview of commonly used VMAs and attempts to shed some light on the underlying physics at the origin of their mechanisms of action. The main molecular parameters of VMA controlling the rheological properties of the cement pore solution are highlighted. As the mechanisms of action of VMAs in cement-based materials are closely related to their affinity with the surface of cement particles, the adsorption of the main VMA types is discussed. The effect of VMAs on flow properties and stability of cement-based …

Cities, Settlements And Key Infrastructure, David Dodman, Bronwyn Hayward, Mark Pelling, Vanesa Castan Broto, Winston T. L. Chow, Et Al.

Research Collection College of Integrative Studies

In all cities and urban areas, the risk faced by people and assets from hazards associated with climate change has increased (high confidence1 ). Urban areas are now home to 4.2 billion people, the majority of the world’s population. Urbanisation processes generate vulnerability and exposure which combine with climate change hazards to drive urban risk and impacts (high confidence). Globally, the most rapid growth in urban vulnerability and exposure has been in cities and settlements where adaptive capacity is limited, especially in unplanned and informal settlements in low- and middle-income nations and in smaller and medium-sized urban centres (high confidence). …

Management Of Change Orders In Infrastructure Transportation Projects, Rayan H. Assaad, Muaz O. Ahmed, Islam H. El-Adaway, Pramen P. Shrestha

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Illinois Department of Transportation (IDOT) will handle many upcoming projects due to the recent statewide infrastructure strategic plan and the fast-track efforts affecting many infrastructure projects amid COVID-19. Nevertheless, many change orders are anticipated to occur on IDOT's projects. Thus, this paper examines the proper contractual management of changes within IDOT infrastructure transportation projects by following a research method based on the integration between a desktop analysis and a focus group analysis. The desktop analysis involved collecting information and data from existing resources, case studies, and documents related to change orders. The focus group analysis involved consulting with change …

A Global Survey Of Infection Control And Mitigation Measures For Combating The Transmission Of Covid-19 Pandemic In Buildings Under Facilities Management Services, Hadi Sarvari, Zhen Chen, Daniel W. M. Chan, Ellyn A. Lester, Nordin Yahaya, Hala Nassereddine, Aynaz Lotfata

Civil Engineering Faculty Publications

Facilities management along with health care are two important aspects in controlling the spread of infectious diseases with regard to controlling the outbreak of global COVID-19 pandemic. Hence, with the increasing outbreak of COVID-19 pandemic, the importance of examining the relationship between the built environment and the outbreak of infectious diseases has become more significant. The aim of the research described in this article is to develop effective infection control and mitigation measures to prevent the transmission of COVID-19 pandemic in the built environment. This study seeks to answer the question of how the facilities management industry can help reduce …

Examining The Effect Of A Chitosan Biopolymer On Alkali-Activated Inorganic Material For Aqueous Pb(Ii) And Zn(Ii) Sorption, Sukanta K. Mondal, Chenglin Wu, Felix C. Nwadire, Ali A. Rownaghi, Aditya Kumar, Yusuf Adewuyi, Monday Uchenna Okoronkwo

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Biopolymers and alkali-activated materials have attracted a great deal of attention as adsorbents for the removal of heavy metal contaminants from aqueous solutions. Both materials are sustainable and feature unique properties, but biopolymers are relatively more expensive or difficult to prepare and exhibit low mechanical and surface properties, a narrow pH range, and thermal stability. In this study, hybrid adsorbents were prepared from both types of material, by alkali activation of low-cost fly ash precursors accompanied by incorporation of 0-2%mass chitosan biopolymer. Two types of alkaline activating solutions, NaOH and Na2SiO3, were employed to generate two sets of hybrid adsorbents …

Vincent House: Stage Iii Schedule Of Work

Documentation

A step by step schedule of the work to be done in the Stage III restoration of Vincent House. Work to be performed is listed in order of priority. Dated June 17, 1978.

Vincent House: Massachusetts Historical Commission Form B

Documentation

Form B for Massachusetts Historical Commission application for Vincent House. August 14, 1977.

Vincent House: Letter From Baker To C. Stuart Avery, August 31, 1978

Documentation

Letter from Anne Baker to C. Stuart Avery of the Martha's Vineyard Historical Preservation Society concerning work to be done on the Exterior phase of Vincent House Restoration. Dated August 31, 1978

Vincent House: Letter From Baker To C. Stuart Avery, October 27,1978

Documentation

Letter from Anne Baker to C. Stuart Avery of Martha's Vineyard Historical Preservation Society concerning windows and door frame. Dated October 27, 1978.

Vincent House: Letter From Baker To Paul Anderson, Mvhps, October 15, 1979

Documentation

Letter from Baker to Paul Anderson of the Martha's Vineyard Historical Preservation Society concerning Baker's thoughts on the future use of the Vincent House as a museum. Dated October 15, 1979.

Vincent House: Baker Letter To C. Stuart Avery, May 10, 1979

Documentation

Letter from Baker to C. Stuart Avery concerning work completed to date and painting schedule and for the A and D Rooms. Dated May 10. 1979.

Vincent House: Paintwork Procedure

Documentation

Paintwork Procedure outlined for Room D, the Kitchen, and Room A, The Federal Room. Dated July 2, 1979.

Vincent House: Letter From Martha's Vineyard Historical Preservation Society To Baker, January 12, 1978

Documentation

Letter written by C. Stuart Avery to inform Baker of MVHPS Trustee vote for restoration items and costs. Dated January 12, 1978.

Vincent House: Baker Letter To Edward W. Vincent, Edgartown Conservation Commission, April 2, 1977

Documentation

Baker's letter to the Edgartown Conservation Commission describes the reasons for saving and preserving Vincent House and cost estimates for restoration and the re-location of the house

Vincent House: Baker Letter To Jerry Mackenty, June 7, 1977

Documentation

Anne Baker's letter to Jerry MacKenty appraising Vincent House and its historical materials and hardware. In this letter Baker mentions that the house was built in 1659 by Oliver Vincent on Old Meeting House Lane in Edgartown.

Vincent House: Baker Letters To Jerry Mackenty, June 15 And June 23, 1977

Documentation

In these letters, Baker describes the condition of the house before the restoration, hiring archeologist, Myron Stachiw, and house mover, Ed Briggs of Mattapoiset, and plans to start the drawings.

Vincent House: Baker Letter To C. Stuart Avery, Martha's Vineyard Historical Preservation Society, June 7,1977

Documentation

Baker's letter to Martha's Vineyard Historical Preservation Society discussing Phase 1 costs and plans for moving the house in August, 1977. Vincent House Expenses for Phase 1 and Phase 2 included.

Vincent House: Restoration - Procedures And Estimate

Documentation

Documentation of procedures to be done and cost estimate for each.

Vincent House: Letter To Selectman Concerning Vincent House Move

Documentation

Letter written by Anne Baker to the Edgartown Board of Selectmen to request permission to move over public rights, Vincent House, from Meeting House Way to a new site in Edgartown Village between Main Street and Pease's Point Way. Included is the Selectmen's response granting permission for move to occur on September 20 and 21, 1977 and a copy of the Building Moving Permit Bond.

Molecular Insight Into The Fluidity Of Cement Pastes: Nano-Boundary Lubrication Of Cementitious Materials, Muhan Wang, Kaixuan Zhang, Xiang Ji, Pan Wang, Hongyan Ma, Jun Zhang, Dongshuai Hou

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The workability mechanism of fresh concrete at the molecular level remains essentially unexplored. To understand the molecular origin for cement fluidity, molecular dynamics and Density Function Theory (DFT) were utilized to construct a shear model of Calcium-Silicate-Hydrate (C-S-H) layers. The structure, dynamics, and reactivity of ultra-confined pore solution between C-S-H gels are systematically investigated. Under shear loading, periodic oscillation of friction force is observed as the typically Couette flow and the interfacial friction force is reduced from 35.2 Kcal/mol·Å to 3.3 Kcal/mol·Å with water content increasing. All of the systems contain breakage of noncovalent bonds of water-Ca and water-water in …

A Call For The Library Community To Deploy Best Practices Toward A Database For Biocultural Knowledge Relating To Climate Change, Martha B. Lerski

Publications and Research

Abstract

Purpose – In this paper, a call to the library and information science community to support documentation and conservation of cultural and biocultural heritage has been presented.

Design/methodology/approach – Based in existing Literature, this proposal is generative and descriptive— rather than prescriptive—regarding precisely how libraries should collaborate to employ technical and ethical best practices to provide access to vital data, research and cultural narratives relating to climate.

Findings – COVID-19 and climate destruction signal urgent global challenges. Library best practices are positioned to respond to climate change. Literature indicates how libraries preserve, share and cross-link cultural and scientific knowledge. …

Effect Of Type And Content Of Expansive Agent On Performance Of Fiber-Reinforced Concrete With Adapted Rheology, Ahmed Abdelrazik, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A performance-based mixture design approach was utilized to optimize the binder content and composition for fiber-reinforced super workable concrete (FR-SWC) and fiber-reinforced self-consolidating concrete (FR-SCC). The test parameters included the replacement ratio of the cement by a Class C fly ash (FA), type and content of expansive agent (EA), and total binder content. Hooked-end steel fibers measuring 30 mm in length were used at 0.5% by volume. The investigated concrete was tested for slump flow, modified J-ring, sieve stability, bleeding, visual stability index, air content, unit weight, as well as compressive and splitting tensile strengths. The elastic modulus, autogenous, drying …

Review: Survey: Architecture Iconographies, Min Kyung Lee

Growth and Structure of Cities Faculty Research and Scholarship

No abstract provided.

The Process Of Urbanization And Modernization That Is Evolving Manchester, United Kingdom, Alison Mcneal

History and Political Science | History 3003 - The Globe

In 1760, Great Britain, among other surrounding countries, transitioned to a new manufacturing process known as the Industrial Revolution. As defined by Oxford Reference, the Industrial Revolution was the “rapid development of industry that occurred in Britain in the late 18th and 19th centuries, brought about by the introduction of machinery. It was characterized by using steam power, the growth of factories, and the mass production of manufactured goods” (Oxford Reference).1 The Industrial Revolution impacted the world by transforming businesses, the economy, and society. Prior, most European countries had economies that were strictly dominated by farming and artisan …

A Systematic Literature Review Exploring The Barriers To Innovative Modular Construction Methods For The International Hyper-Scale Data Centre Sector, Peter E. Lonergan, A.Omar Portillo-Dominguez

Other

Data centres form the essential global infrastructure relied upon for multiple industries such as the internet, financial services, and telecommunications. Consequently, data centre construction has developed into a buoyant business sector, leveraging increasing global investment. However, traditional means of data centre procurement do not match stakeholder’s ambitions or current delivery demands. Thus, there is a need for the adoption of new and innovative construction methodologies in the sector to introduce improvements for the delivery of this essential infrastructure. As a step in that direction, this paper presents a Systematic Literature Review (SLR) that investigates the barriers preventing the implementation of …

Metapsychology And Metaphysics Of The Self, John Shannon Hendrix

Architecture, Art, and Historic Preservation Faculty Publications

No abstract provided.

Idealism And Psychoanalysis In Architecture, John Shannon Hendrix

Architecture, Art, and Historic Preservation Faculty Publications

No abstract provided.