Index Catalog // Arch : Northwestern University Institutional Repository

Autonomous Remote Crack Displacement Monitoring of a Residence Near a Limestone Quarry, Naples, Florida

Description:: This paper describes the technology and methods deployed in the continuous autonomous remote monitoring of cracks in interior and exterior walls of a residence near a limestone quarry. The object is to quantitatively compare crack response to blast-induced ground motion to that induced by diurnal temperature changes, weather fronts, and...
Keyword:: Cracking of concrete and Structural health monitoring
Creator:: David E. Kosnik
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2008-03-21
Resource Type:: Research Paper

Early Age Properties of Portland Cement Pastes Investigated with Ultrasonic Shear Waves and Numerical Simulation (preprint)

Description:: In this paper, the correlation of reflection loss measured by an ultrasonic shear wave reflection method and the microstructure in cement-based material is investigated. Three cement pastes (Portland cement type I) with different water-cement ratios (0.35, 0.50 and 0.60) cured at 25 °C were examined. The ultrasonic shear wave reflection...
Keyword:: Nondestructive testing
Creator:: Zhihui Sun, Guang Ye, Klaas van Breugel, Surendra P. Shah, and Thomas Voigt
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/19/2017
Date Modified:: 08/14/2017
Date Created:: 2003
Resource Type:: Research Paper

Distributions of Ground Movements Parallel to Deep Excavations in Clay

Description:: An empirical procedure for fitting a complementary error function (erfc) to settlement and lateral ground movement data in a direction parallel to an excavation support wall is proposed based on extensive optical survey data obtained around a 12.8 m excavation in Chicago. The maximum ground movement and the height and...
Keyword:: Excavation, Clay soils , Ground control , and Performance data
Creator:: Jill Frances Roboski
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2005
Resource Type:: Research Paper

Three-dimensional effects observed in an internally braced excavation in soft clay

Description:: Several three-dimensional effects were observed in the performance monitoring data collected during excavation for the Ford Engineering Design Center (FEDC) in Evanston, Illinois. These responses are related to lateral deformations of the soil around the excavation walls, forces in the cross-lot and diagonal bracing that supported the temporary wall and...
Keyword:: Excavation, Three-dimensional analysis, Ground control, and Clay soils
Creator:: James Tanner Blackburn and Richard J. Finno
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2006
Resource Type:: Research Paper

Use of Monitoring Data to Update Performance Predictions of Supported Excavations

Description:: Successful use of monitoring data to update performance predictions of supported excavations depends equally on reasonable numerical simulations of performance, the type of monitoring data used as observations, and the inverse analysis techniques used to minimize the difference between predictions and observed performance. This paper summarizes each of these factors...
Keyword:: Excavation, Nondestructive testing , and Ground control
Creator:: Richard J. Finno
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

Inverse Analyses Techniques for Parameter Identification in Simulation of Excavation Support System

Description:: Two numerical procedures are described that quantitatively identify a set of constitutive parameters that best represents observed ground movement data associated with a deep excavations in urban environments. This inverse problem is solved by minimizing an objective (or error) function of the weighted least-squares type that contains the difference between...
Keyword:: Ground control and Nondestructive testing
Creator:: Cecilia Rechea Bernal
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

Integrated Tools for Predicting, Monitoring and Controlling Ground Movements due to Excavations

Description:: This paper describes developments of integrated tools for predicting, monitoring, and controlling ground movements associated with excavations in urban areas. Successful use of monitoring data to update performance predictions of supported excavations depends equally on reasonable numerical simulations of performance, the type of monitoring data used as observations, and the...
Keyword:: Ground control and Nondestructive testing
Creator:: Richard J. Finno and Youssef M. A. Hashash
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2009
Resource Type:: Research Paper

Structure Response to Trench and Road Blasting", Proceedings of the 3rd World Conference on Explosives and Blasting, European Federation of Explosives Engineers, Brighton, England

Description:: Crack and structural response to construction trench blasting was measured in a woodframe house with a stucco exterior. Blasts at distances between 232 m to 368 m produced peak particle velocities (PPV) and air blast over pressures (AB) of 9 mm/sec and 0.02 kPa (123 dB), respectively. Structural response velocities...
Keyword:: Structural health monitoring
Creator:: Charles H. Dowding , Catherine T. Aimone-Martin, and Vitor L. Rosenhaim
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2005
Resource Type:: Research Paper

Ground Motions from and House Response to Underground Aggregate Mining

Description:: A unique judicial opportunity allowed measurement of the response of three cracks in residential structure to blasting for underground aggregate mining. Instrumented cracks were located in the interior basement CMU mortar and upstairs dry wall as well as exterior brick work. The dynamic environment was unusual. Even though the blasting...
Keyword:: Structural health monitoring and Cracking of concrete
Creator:: Mike Waldron, G.F. Revey, and C.H. Dowding
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

Micro-meter Crack Response to Rock Blast Vibrations, Wind Gusts & Weather Effects

Description:: Micro-meter dynamic crack responses in a two story structure to rock blasting- and wind gust- excitation are compared to those induced by long term climatological effects. These measurements substantiate the conservancy of the 12.5 mm/s (0.5 in./s) blasting vibration control to protect residential structures against cracking. The test structure was...
Keyword:: Micrometers , Blast effect , Structural health monitoring, and Cracking of concrete
Creator:: Charles H. Dowding and C. T. Aimone-Martin
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

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Autonomous Remote Crack Displacement Monitoring of a Residence Near a Limestone Quarry, Naples, Florida

Early Age Properties of Portland Cement Pastes Investigated with Ultrasonic Shear Waves and Numerical Simulation (preprint)

Distributions of Ground Movements Parallel to Deep Excavations in Clay

Three-dimensional effects observed in an internally braced excavation in soft clay

Use of Monitoring Data to Update Performance Predictions of Supported Excavations

Inverse Analyses Techniques for Parameter Identification in Simulation of Excavation Support System

Integrated Tools for Predicting, Monitoring and Controlling Ground Movements due to Excavations

Structure Response to Trench and Road Blasting", Proceedings of the 3rd World Conference on Explosives and Blasting, European Federation of Explosives Engineers, Brighton, England

Ground Motions from and House Response to Underground Aggregate Mining

Micro-meter Crack Response to Rock Blast Vibrations, Wind Gusts & Weather Effects

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