Architecture Commons^™

Rilem Tc 266-Mrp: Round-Robin Rheological Tests On High Performance Mortar And Concrete With Adapted Rheology—Evaluating Structural Build-Up At Rest Of Mortar And Concrete, Sofiane Amziane, Kamal Khayat, Mohammed Sonebi, Arnaud Perrot

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This Paper Presents the Results of a Round-Robin Testing Program Undertaken by RILEM TC-266-Measuring Rheological Properties of Cement-Based Materials in May 2018 at the Université D'Artois in Bethune, France. Seven Types of Rheometers Were Compared; They Consisted of Four ICAR Rheometers, Viskomat XL Rheometer, EBT-V Rheometer, Sliding Pipe Rheometer (SLIPER), RheoCAD Rheometer, and 4SCC Rheometer, as Well as the Plate Test. This Paper Discusses the Results of the Evolution of the Static Yield Stress at Rest of Three Mortar and Five Concrete Mixtures that Were Determined using Two ICAR Rheometers, Viskomat XL, and EBT-V Rheometers, as Well as the Plate …

Utilizing Waste Latex Paint Toward Improving The Performance Of Concrete, Mohamed Leithy, Eslam Gomaa, Ahmed A. Gheni, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this paper, incorporating the waste latex paint (WLP) into the conventional concrete as a partial replacement of sand to improve its durability was investigated. The fresh and hardened characterizations, in addition to the durability of concrete, were examined. The slump test was used to evaluate the fresh properties, while the hardened properties were evaluated through the volume of voids and absorption rate, in addition to the compressive, splitting tensile, and flexural strengths tests. The durability performance was evaluated by the surface resistivity, bulk electrical resistivity, as well as freeze and thaw resistance tests. The results showed a reduction in …

Concrete Masonry Program (Cmd21) Usability, Allie G. Decker

Architectural Engineering

The Concrete Masonry Design Program, CMD21, can be utilized in the design of beams, columns, and walls, but this project focuses on the use of the program to analyze shear walls loaded in-plane. This report critiques and describes the learning process behind the CMD21 program.

Rilem Tc 266-Mrp: Round-Robin Rheological Tests On High Performance Mortar And Concrete With Adapted Rheology—Rheometers, Mixtures And Procedures, Dimitri Feys, Mohammed Sonebi, Sofiane Amziane, Chafika Djelal, Khadija El-Cheikh, Shirin Fataei, Markus Greim, Irina Ivanova, Helena Keller, Kamal Khayat, Laurent Libessart, Viktor Mechtcherine, Ivan Navarrete, Arnaud Perrot

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Recent developments in understanding the rheology of mortar and concrete as well as applying this understanding in the practice of construction necessitate an accurate assessment of materials' rheological properties. It is well known that different rheometers for mortar and concrete deliver different results, as this was shown over 15 years ago in two measuring campaigns comparing concrete rheometers. Considering newly developed rheometers, including those to evaluate interface rheology and structural build-up at rest, as well as additional measurement procedures and data interpretation techniques, a new comparison campaign was carried out in 2018 at the Université d'Artois, in Bethune, France. This …

Editorial: Ultra-High Performance Concrete: Computation And Simulation Methods, Xinpeng Wang, Yitong Ma, Dongshuai Hou, Hongyan Ma, Yue Zhang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

Exploring The Use Of Re-Forming Concrete, Moritz Meditz

Bachelor of Architecture Theses - 5th Year

This thesis takes a closer look at concrete construction in the modern area and, more specifically, the use of formwork to shape the built environment.

Traditional rigid concrete formwork has been optimized for buildability while serving structural needs. This mentality means simple prismatic elements that are entirely overbuilt for the task, stacked on top or next to one another. The idea that these elements are the peak of efficiency in concrete production has informed virtually all modern concrete construction. Any shapes that vary from the simple prismatic volumes are seen as challenging to build and expensive. For the most part, …

Pumping Of Concrete: Understanding A Common Placement Method With Lots Of Challenges, Dimitri Feys, Geert De Schutter, Shirin Fataei, Nicos S. Martys, Viktor Mechtcherine

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Several million cubic meters of concrete are pumped daily, as this technique permits fast concrete placement. Fundamental research has been performed and practical guidelines have been developed to increase the knowledge of concrete behavior in pipes. However, the pumping process and concrete behavior are not fully understood. This paper gives an overview of the current knowledge of concrete pumping. At first, the known physics governing the flow of concrete in pipes are introduced. A series of experimental techniques characterizing concrete flow behavior near a smooth wall to predict pressure-flow rate relationships are discussed, followed by recent developments in the use …

Investigation Into Excessive Deflections In A Concrete Flat Slab, Matthew Frydman

Architectural Engineering

This senior project was inspired by a project experience during a summer internship in Denver, Colorado at Wiss, Janney, Elstner Associates, Inc. After a pipe froze and burst in the 13,000 sq. ft. basement of a two story building built in the 1990’s, an investigation was needed to determine the structural impacts of the event. A site visit was performed to collect data, and it quickly became clear that slab deflections and strength were top priorities. The slab was able to deflect in the basement due to a cardboard void form that was used to accommodate expansive soils. This project …

Assessment Of Carbon Dioxide Emission And Its Impact On High-Rise Mixed-Use Buildings In Egypt, Ahmed Salah Hamza

Theses and Dissertations

With Egypt's vision of 2030 focusing on sustainable development with a true emphasis on Carbon Dioxide (CO₂) emission reduction in the newly built cities and high-rise buildings, efforts are exerted on various levels towards accomplishing the vision’s goals. This is achieved through multiple tools and models associated with aiding the reduction of carbon emissions, yet not a clear one was introduced for the mixed-use buildings in Egypt.

Through this work, a significant gap was identified with respect to high-rise buildings carbon emission assessment in Egypt. This was a main driving force for this work in an attempt to …

Steel To Concrete Connections, Dylan Thompson

Architectural Engineering

This project consists of the design, installation, and implications of steel beam to concrete wall connections. A new, modern single family home in Beverly Hills was the site of the connections. Calculations and details of gravity and drag beams were carried out, communication with the steel fabricator shop and the architect were performed, and a subsequent site visit to view construction methods was completed. Takeaways from the project were the economics of the connections designed, communication within separate disciplines on the site, and visualization of designed elements in the real-world.

Tanzanian Concrete Masonry Walls, Edward J. Kaminski

Architectural Engineering

Walls that replicate masonry walls used in Tanzania are constructed and tested. The results from testing was compared with the respective predictions made using code guidelines from ASCE 7 and TMS 402.

Blue Mountain Residence, Marin Kira Govett

Architectural Engineering

The Blue Mountain Residence is a new, single family residence located in Jefferson County, Colorado, a suburb of Denver. It is located close to the front range at an elevation of 7,600 ft. The owner and architect of the residence is Cherie Goff of HMH Architecture in Boulder, Colorado. The house is mostly of wood construction with elements of steel and concrete. The structural project team includes a Cal Poly architectural engineering student and professional engineers in DLK Engineering in Lafayette, CO. This report contains the complete project description, structural design calculations, and stamped structural construction drawings. The report examines …

La Huella Del Cemento Aportes Del Cemento En La Arquitectura Republicana Bogotá Colombia 1910 - 1932, María Paula Neira Zúñiga

Arquitectura

Este estudio tiene el propósito de determinar los aportes del cemento a la arquitectura republicana en un período de tiempo comprendido entre 1910-1932, en Bogotá, Colombia. Para esta época se adelantaban procesos de industrialización en la capital del país y el cemento fue novedoso aportando a la evolución técnica, ornamental y funcional de la arquitectura. Esto se logró determinar gracias al análisis de tres casos de estudio: El Quiosco de la Luz (1910), El Edifi cio Pedro A. López (1919-123) y el Edifi cio Piedrahita (1930-1939) contrastando sus características arquitectónicas con las de edifi caciones de estilo colonial y republicano …

Steel Test Set-Up For Non-Ductile Concrete Shear Walls, Colin S. Ridgley

Architectural Engineering

The purpose of this project was to provide a robust test set-up for the thesis work being conducted by graduate students, Jerry Luong & Rory de Sevilla. Their research aims to evaluate the feasibility of using fiber-reinforced polymer wraps and splay anchors to retrofit non-ductile concrete shear walls through a series of tests on reinforced concrete walls.

Four key constraints governed the design of the test set-up. First, the wall can be cyclically, laterally loaded to develop data for comparison with theoretical analysis methods. Second, the wall can be axially loaded to simulate interaction effects and prevent a sliding failure …

Coir Fiber Reinforced Concrete, Jose De La Serna, Moses Karakouzian

AANAPISI Poster Presentations

This poster exhibits the testing and research done on general Portland Cement Concrete with the addition of coir (coconut) fibers as reinforcement. Using the fundamental constituents of cement (water, cement, fine and coarse aggregate) and processed coir fiber, concrete specimens were batched to test for compressive and flexural strengths (per appropriate ASTM standards). Cylindrical and rectangular beam specimens were subjected to loadings until failure occurred. The capacity and modes of failures of the specimens were observed. It was determined that:

• The addition of processed coir fibers decreases the overall strength of general Portland Cement Concrete. • The tested concrete’s …

Innovating Concrete Shell Construction, Aron J. Tezveren-Johnson, Jiamin Chen, Kenneth Lee, Ireneidalys Mata, Garrett Parkinson

Architectural Engineering

Thin-shell concrete construction formwork in the modern era is complicated and expensive. With the use of a sophisticated soil formwork construction method, this process can be simple and cost-effective. This senior project explores a new construction method as well as the performance of a finished shell structure.

Transcend: A Thin-Shell Japanese Onsen Experience, James Douglas Blanchard, Nicholas Michael Horaney, Hunter Thomas Mosier, Lillian Cao, Cory Peterman

Architectural Engineering

This project is an interdisciplinary architectural design of a funicular Japanese onsen utilizing the compressive strength of thin-shell concrete. A section of this project was also built to scale on the Cal Poly campus in the Architectural Engineering department's High Bay facility. This project was designed utilizing Rhinoceros and analyzed using SAP 2000 19.

Portland Pacific, Hunter David Caldwell, Kelly Louise Clancy, Kevin T. Khieu, Shaina Pak Kim, George Suarez

Architectural Engineering

Interdisciplinary senior project by Hunter Caldwell, Kelly Clancy, Kevin Theodore Khieu, Shaina Kim, and George Suarez. Project involves architectural design, engineering analysis, and construction of a thin-shelled concrete structure.

Mano De La Amistad: A Thin Shell Concrete Structure Designed For The People Of Havana, Cuba, Peter Aster, Marta Blachowicz-Scott, Aaron Cook, Alex Erler, Elizabeth Townsend, Ger Yang

Architectural Engineering

In designing a thin shell structure to cover the performance space on Tribuna Anti Imperialista Jose Marti, in Havana, Cuba, we developed a heavily symbolic concept and further abstracted it to reach our design. Basing the concept on the quote to the right by Obama about US and Cuba relations, we wanted our design to be representative of a hand that works to adjoin the plaza to the US Embassy which is directly west of the site. The “wrist” portion adds an asymmetric element, while the fingers provide a backdrop to the performers as well as a view through to …

The Ginkgo Shell, Mark Luzi, Karla Santos, Josh Cannon, Erika Davis, Nora Villanueva

Architectural Engineering

The overall concept for this outdoor concrete shell structure, located in Furstliche Park in Inzigkofen, Germany, is derived from an abstracted ginkgo leaf. Drawing on inspiration from a poem about the two parts of the ginkgo leaf becoming one, we took the approach of combining both the natural and built environment into one cohesive piece. To connect the two, it was imperative that we place the shell on the site as to have the smallest impact. With a small portion of the overall site used, the unoccupied space further enhances the natural environment. Creating a literal design connection between the …

Shrinkage Cracking In Concrete Tilt-Up Construction, Stewart Hooks, Jack Robinson

Architectural Engineering

The purpose of this project is to investigate a particular, undesirable cracking pattern in concrete tilt-up panels that, until now, did not have a known definite cause. The cause of this cracking pattern is hypothesized to be due to shrinkage restraint of the concrete panels. The cracking under investigation occurs at the bottom corners of the Tilt-Up panels, suggesting that the base of the panel is restrained from shrinkage. This project models various components of Tilt-Up Construction that have potential for restraining the panels from shrinking. This project consists of the following main components.

The first aspect of this project …

Clothedral, Jacob T. Holmes, Andres Munoz, Sam Tenreiro Theis, Marta Blachowicz

Architectural Engineering

No abstract provided.

Polaris, Dennise M. Manalo, Andy Do, Emilio Lozano, Mackenzie Stickney

Architectural Engineering

The project explores the relationship between the architecture and the engineering behind thin-shelled concrete structures. Initially, hanging chain models were used to observe pure compression; then, this model was improved upon using software like Rhinocerus, AutoCAD. From AutoCAD, the model was imported into SAP2000 for analysis.

Pumping Of Fresh Concrete: Insights And Challenges, Geert De Schutter, Dimitri Feys

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Pumping of Fresh Concrete is of Utmost Importance for Concrete Practice. Required Pumping Pressures Are Typically Estimated based on Design Charts. However, with the Increased Use of Chemical Admixtures and the Development of More Flowable Concrete Mixtures, the Accuracy of Traditional Design Charts is Questioned. in Recent Years, Significant Progress Has Been Obtained in Understanding the Flow of the Material in the Pumping Pipe, Including the Behavior of the Lubrication Layer Near the Pipe Surface. in Comparison with Traditional Design Charts, This Results in More Reliable Pressure Predictions When Considering Very Fluid Concrete Types Like Self-Consolidating Concrete. Some Remaining Challenges …

Compression Testing And Failure Modes Of Steel-Concrete Composite (Sc) Structures For Nuclear Containment, Patrick Michael Wanamaker, Amit H. Varma

The Summer Undergraduate Research Fellowship (SURF) Symposium

Although being able to provide much cleaner power than burning coal and other fossil fuels, nuclear power plants are still a tough sell to the general public due to their history of being spontaneously dangerous. The containment structures surrounding these nuclear plants, however, can play a huge role in reducing the risks associated with them. Relatively new designs for these containment assemblies, known as SC (steel-concrete composite) structures, aim to increase the strength and durability of the containment facilities while keeping costs down. By varying the spacing between shear studs, the ratio of concrete to steel, and the ratio of …

Structural Performance Of Reinforced Concrete Flat Plat Buildings Subjected To Fire, Sara Jean George

UNLV Theses, Dissertations, Professional Papers, and Capstones

Reinforced concrete structures are typically considered to have inherent resistance to fire. However, several concrete structures around the world have experienced partial or total collapse under fire. Reinforced concrete flat-plate is a type of structural system widely used for office and residential buildings. Flat plate construction is prone to punching shear failure at slab-column connections which may lead to a catastrophic progressive collapse. The slabs of flat-plates generally have very thin concrete cover leaving steel reinforcement more sensitive to thermal loads. Little is known in the engineering community about the structural performance of flat-plate structures subjected to fire. Through a …

Evaluation Of Time Independent Rheological Models Applicable To Fresh Self-Compacting Concrete, Dimitri Feys, Ronny Verhoeven, Geert De Schutter

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Self-Compacting Concrete is a New Type of Concrete Which is More Liquid Compared to Traditional Concrete and Which Does Not Need Any Form of External Compaction. as a Result, This Type of Concrete is Suitable for a New Placing Technique: Pumping SCC from the Bottom in the Formwork and Letting It Rise in the Formwork Due to the Applied Pressure. in Order to Understand the Phenomena Occurring during Pumping Operations, the Rheological Properties of SCC Must Be Investigated and Controlled. Tests Have Been Performed with Two Different Rheometers, Which Are Described in This Paper. for the Tattersall MIk-II Rheometer, a …