Architecture Commons^™

Extension Of The Reiner-Riwlin Equation To Determine Modified Bingham Parameters Measured In Coaxial Cylinders Rheometers, Dimitri Feys, Jon E. Wallevik, Ammar Yahia, Kamal H. Khayat, Olafur H. Wallevik

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Determination of the Exact Rheological Properties, in Fundamental Units, of Cementitious Materials Has Become Gradually a Necessary Step in the Domain of Concrete Science. Several Types of Rheometers and their Corresponding Transformation Equations Are Described in the Literature. in This Paper, the Reiner-Riwlin Transformation Equation, Valid for Coaxial Cylinders Rheometers, is Developed for the Modified Bingham Model, which is an Extension of the Bingham Model with a Second Order Term in the Shear Rate. the Established Transformation is Shown to Be Compatible with the Reiner-Riwlin Equation for the Bingham and Herschel-Bulkley Models. its Validation is Further Proven by Means …

Effect Of High-Volume Fly Ash On Shear Strength Of Concrete Beams, Mahdi Arezoumandi, Jeffery Volz, John Myers

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Every year concrete production exceeds 6.5 billion tons worldwide, nearly 1 ton for every man, woman, and child on the planet. In fact, concrete is used 10 times more than any other building material in the world, primarily because of its incredible versatility, availability, and relatively low cost. Unfortunately, the production of Portland cement - the key ingredient in concrete - generates approximately a pound of carbon dioxide for every pound of cement produced. One method of reducing concrete's carbon footprint is to replace a significant amount of the cement with fly ash, a by-product of coal-burning thermal power stations. …

Effect Of Moist Curing And Use Of Lightweight Sand On Characteristics Of High-Performance Concrete, Soo Duck Hwang, Kamal H. Khayat, Dalia Youssef

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Factorial design approach was undertaken to determine the effect of initial moist-curing duration (0 and 6 days) on properties of high-performance concrete (HPC) made with different water-to-cementitious materials ratios (w/cm) of 0.30 and 0.40 and sand substitution rates with lightweight sand (LWS) of 0 and 30 %, by volume. Mechanical properties of HPC are shown to be mainly affected by w/cm and total shrinkage of concrete by the LWS replacement rate and initial moist-curing period. It should be noted that concrete made with 30 % LWS replacement that did not receive any moist-curing exhibited lower shrinkage than moist-cured concrete prepared …

Ua61/3 Health Sciences Complex: Nursing & Physical Therapy, Wku Health & Human Services

WKU Administration Documents

Booklet describing the Medical Center / WKU Health Sciences Complex facility. Floorplans are included.

Local Policy Scan On Climate Change Adaptation, Adrienne I. Greve, Michael R. Boswell

City and Regional Planning

The Climate Change Adaptation Policy Scan provides a snapshot of the current state of community-level activities in the United States and Canada for addressing climate change impacts on public health. The report was developed using a combination of literature review, expert interviews, and case studies to identify best practices, common challenges, and keys to success. This report is intended to be useful to public health officials and community organizations; city and county public agencies, especially those involved in city planning and sustainability; and scholars in these fields. The information provided for the emerging area of climate adaptation policy development is …

Use Of Vacuum For The Stabilization Of Dry Sand Slopes, B. Bate, Limin Zhang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Vacuum is proposed as a means for rescuing soil slopes showing signs of impending failure. Two aspects associated with the proposed method were studied: namely, the theory of airflow through dry soils and the effectiveness of vacuum for enhancing the stability of soil slopes. A model test device was developed, and two series of tests were carried out using this device. One was a series of tests on pore-air pressure distributions in dry sand slopes, and the second series involved dry sand slope stability tests. The results revealed that a vacuum (negative pore-air pressure) even as small as 20.4 kPa …

Spacecraft Module Hole Size And Crack Length Prediction Following A Penetrating Debris Particle Impact, Joel E. Williamsen, William P. Schonberg, Hilary J. Evans

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The process used to calculate and reduce the consequences of meteoroid and orbital debris (MOD) penetrations and their link to catastrophic failure has evolved over time. As the threat of the orbital debris population increased in the 1980s and early 1990s, NASA developed a tool to determine the probability of no catastrophic failure, or PNCF, for the space station and to assess possible changes in station design and/or operations to improve that survivability percentage. PNCF is directly related to the PNP, or probability of no penetration, as calculated by Bumper, the code used by NASA to perform MOD risk assessments. …

Ua12/13 2013 Sustainability Report [Western Kentucky University], Wku Office Of Sustainability, Christian Ryan-Downing

Sustainability Publications and Resources

No abstract provided.

Insites, 2013, Utah State University

inSites

Magazine of the Department of Landscape Architecture and Environmental Planning

Effect Of Fly Ash On The Shear Strength Of Concrete Beams Without Shear Reinforcement, Mahdi Arezoumandi, Jeffery S. Volz, Carlos A. Ortega

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The following paper presents the results of an experimental investigation of the shear strength of full-scale reinforced concrete beams constructed with both high-volume fly ash concrete (HVFAC)-concrete with at least 50% of the cement replaced with fly ash-and conventional concrete (CC). This study includes two HVFAC mixes and one CC mix. The two HVFAC mixes are identical except for the amount of Class C fly ash replacement of cement, with one mix replacing 50% of the cement with fly ash and the other replacing 70 %. The test matrix included 18 beams-six for each concrete type-with three different longitudinal reinforcement …

Introductory Review To The Special Issue: Shrinking Cities And Towns: Challenge And Responses, Andreas Luescher, Sujata Shetty

Architecture and Environmental Design Faculty Publications

Cities and towns facing sustained population loss are being researched and discussed more than ever before. Once the focus of a relatively small group of architects and urban designers in Europe, these cities and towns are now being studied by scholars across the world. In a range of contexts - from a large, iconic city like Detroit, to a small village in Japan (described by Thomas Feldhoff in this issue), this phenomenon is being observed in unexpected places, and far more frequently than once imagined.

A wider population is engaging in this as well, as discussions of the future of …

Design Epilogues, Andreas Luescher

Architecture and Environmental Design Faculty Publications

This pamphlet tries to explain the generally unrecognized aspect of a studio experience that stitches together the most salient elements of individual design projects into one coherent narrative. Design Epilogues attempts to borrow something from each project that can be used to create something new.

Rainwater To Flush Toilets On A Volcano, Robert A. Buchan

STAR Program Research Presentations

Objective: Investigate the feasibility of a rainwater collection system to provide for a sustainable source of non-potable or potable water at a potentially isolated solar observatory site (likely Mauna Loa Observatory in Hawaii).

Introduction: The National Center for Atmospheric Research/High Altitude Observatory (NCAR/HAO) proposes to build a solar observatory comprising a trio of instruments for studying solar coronal magnetism.

Methods: Each square foot of collection surface will experience approximately 0.62 gallons of runoff from 1 inch of rainfall (12 in x 12 in x 1 in = 0.62 gallons). Some water will be lost to evaporation, splashing, overflows, and other …

Korbel Sawmill Research Notes, Susie Van Kirk

Susie Van Kirk Papers

No abstract provided.

Drawing As Architecture: Representational Space Architecturally Transformed, Andrew J. Arkell

Inquiry: The University of Arkansas Undergraduate Research Journal

This project was motivated by the premise that a drawing could take on architectural meaning beyond its initial performance as a re-presentation of an architectural idea; in other words, the motivation was to create a drawing that was architecture. When the drawing is the research, however, the conclusions found are necessarily different from the earliest goals pursued. There comes an understanding that a drawing may never be literal architecture; although, the means by which the drawing is created might be architectural or, at the very least, speak to ideals which are fundamental to the creation, to the process, of architecture.

New York Neighborhoods Fight Land Grabs: Public Parks Going To Professional Teams, Donovan Finn

School of Marine & Atmospheric Sciences Faculty Publications

In the diverse New York City borough of Queens, local activists banded together in the early 2000's to fight back against a trio of city-led urban development projects intended to provide public parkland to private real estate developers.

Hypervelocity Impact Testing Of Multiwall Targets Using Multiple Simultaneously Launched Projectiles, William P. Schonberg, Steve Evans, Michael D. Bjorkman

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Multiwall shield designs for spacecraft have been studied extensively in the last four decades as a means of reducing the perforation threat of the near-Earth particulate environment over equivalent single-wall structures. The performance of an impact shield is typically characterized by its ballistic limit equation, which is obtained through high-speed impact tests that typically use spherical projectiles fired in light gas guns. Traditional firings employ only one projectile per launch package. However, some facilities have taken to launching multiple projectiles of different sizes in a single launch package. In light of the significant role played by a ballistic limit equation …

Ua3/9/2 President's Office-Ransdell Subject File, Wku Archives

WKU Archives Collection Inventories

Subject files created by the President’s Office during the Gary Ransdell administration.

Ua77/1 Augenstein Alumni Center, Wku Alumni Relations

WKU Administration Documents

Brochure regarding the construction of Augenstein Alumni Center at Western Kentucky University. Includes site plan, floor plans and elevation.

Plants As Bio-Indicators Of Subsurface Conditions: Impact Of Groundwater Level On Btex Concentrations In Trees, Jordan Wilson, Rachel Bartz, Matt Limmer, Joel Gerard Burken

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Numerous Studies Have Demonstrated Trees' Ability to Extract and Translocate Moderately Hydrophobic Contaminants, and Sampling Trees for Compounds Such as BTEX Can Help Delineate Plumes in the Field. However, When BTEX is Detected in the Groundwater, Detection in Nearby Trees is Not as Reliable an Indicator of Subsurface Contamination as Other Compounds Such as Chlorinated Solvents. Aerobic Rhizospheric and Bulk Soil Degradation is a Potential Explanation for the Observed Variability of BTEX in Trees as Compared to Groundwater Concentrations. the Goal of This Study Was to Determine the Effect of Groundwater Level on BTEX Concentrations in Tree Tissue. the Central …