Open Access. Powered by Scholars. Published by Universities.®

Civil and Environmental Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

2019

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 1891 - 1896 of 1896

Full-Text Articles in Civil and Environmental Engineering

Accuracy Of 3d Point-Cloud And Photo-Based Models Of City Street Intersections, Mariah D. Peart Jan 2019

Accuracy Of 3d Point-Cloud And Photo-Based Models Of City Street Intersections, Mariah D. Peart

Electronic Theses and Dissertations

From Georgia Southern University’s Built Environment and Modeling lab, this study compares point positions and distance measurements completed with state-of-the-art instruments and equipment. A modern, 12-second, laser scanner, a modern unmanned aerial vehicle and a highly accurate, 1-second robotic total station were employed for this study. The latter serving as the benchmark instrument. The main objective of this quantitative comparison is to explore the accuracy and usability of a relatively large point-cloud model, as a virtual surveying tool for redesign/reconstruction purposes. This project involves the generation of large, 3D, point-cloud models of two busy and complex city street intersections. One …


Ce 431-106: Construction Materials Laboratory, Steve George Jan 2019

Ce 431-106: Construction Materials Laboratory, Steve George

Civil and Environmental Engineering Syllabi

No abstract provided.


Finite Element Modeling Of Mechanically Stabilized Earth Walls Built With Welded Wire Wall Panels, Dejuan G. Solan Jan 2019

Finite Element Modeling Of Mechanically Stabilized Earth Walls Built With Welded Wire Wall Panels, Dejuan G. Solan

Electronic Theses and Dissertations

In this thesis, a finite element modeling of Mechanically Stabilized Earth (MSE) walls using welded wire wall panels was performed. The implementation of finite element modeling and analysis proved to be quite efficient in simulating the three-dimensional behavior of wall panels that are a part of MSE walls. The comprehensive finite element model included defined concrete and steel material properties in order to present both the realistic behaviors of each component in the model as well as better facilitating and increasing the accuracy of the simulation of numerous finite element analysis (FEA) cases. FEA was employed to simulate welded wire …


Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski Dec 2018

Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Effect Of Volcanic Ash Pozzolan Or Limestone Replacement On Hydration Of Portland Cement, Kemal Celik, Craig W. Hargis, Rotana Hay, Juhyuk Moon Dec 2018

Effect Of Volcanic Ash Pozzolan Or Limestone Replacement On Hydration Of Portland Cement, Kemal Celik, Craig W. Hargis, Rotana Hay, Juhyuk Moon

Craig Hargis

The replacement of Portland cement (PC) with either supplementary cementitious material (SCM) or fillers, such as natural pozzolans (NP) or limestone powder (LP) respectively, is known to affect the chemical properties of concrete, thus influencing its fresh and hardened properties. This study investigated the effects of volcanic ash NP or LP on setting time, normal consistency, hydration, and strength properties of cement paste and mortar while following the chemical changes that were a direct result of the substitution. While both materials were found to increase water demand, NP at 30% and 50% replacement levels increased setting time while LP at …


Application Of Fly Ash And Brick Dust As A Suitable Materials For Fine Aggregate In Self-Consolidating Concrete, Phani N. Ramamurthy Dec 2018

Application Of Fly Ash And Brick Dust As A Suitable Materials For Fine Aggregate In Self-Consolidating Concrete, Phani N. Ramamurthy

International Scientific Journals

Large-scale efforts are needed for conservation of natural sand whose resources are reducing day by day and legal complications are making it difficult to meet the demand. So, self-compacting concrete (SCC) is an innovative concrete that does not require vibration for placing and compaction. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. The hardened concrete is dense, homogeneous and has the same engineering properties and durability as traditional vibrated concrete. Complex shape of concrete structures and densely arranged bars make it more difficult to use …