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Investigating The Effects Of Aggregate Size And Reinforcement On Asr Cracking In Concrete Structures Studied With Different Evaluation Methods, David Joseph Bianco
Investigating The Effects Of Aggregate Size And Reinforcement On Asr Cracking In Concrete Structures Studied With Different Evaluation Methods, David Joseph Bianco
Theses and Dissertations
The objective of this thesis is to investigate different (non-destructive) evaluation methods to assess the effects of reactive aggregate size and reinforcement on ASR affected concrete. It has been shown in previous literature that reactive coarse aggregates lead to more expansion as opposed to reactive fine aggregates. However, there is a lack in the literature exhibiting this relationship using different evaluation methods, such as acoustic emission (AE) and ultrasonic pulse velocity (UPV). Also, the literature does not emphasize the role this relationship plays when the concrete is imposed with stress boundary conditions. Non-destructive test methods, including acoustic emission, are becoming …
Use Of In-Situ Tests To Identify Soil Behavior Type And Liquefaction Susceptibility Of Sccp Soils, Rajshekhar Sarkar
Use Of In-Situ Tests To Identify Soil Behavior Type And Liquefaction Susceptibility Of Sccp Soils, Rajshekhar Sarkar
Theses and Dissertations
For many years, the Cone Penetrometer Test (CPT), Flat Plate Dilatometer Test (DMT) and Standard Penetration Test (SPT) have been used as in-situ tools to assess the liquefaction potential of soils. Given the importance of evaluating liquefaction potential in the South Carolina Coastal Plain (SCCP), research was conducted to study the soil behavior of soils prone to liquefaction, develop site specific correlations between SPT, DMT and CPT testing parameters and evaluate the liquefaction susceptibility of the soils in the SCCP. The SCCP sites studied in this thesis are Sampit (SAM), Gapway (GAP), Hollywood (HWD), Four Hole Swamp (FHS) and Fort …
Impact Of Curing Time And Curing Stress On The Mechanical Behavior Of Cement-Improved And Cement-Fiber-Improved Soft Soil, Ryan Daniel Starcher
Impact Of Curing Time And Curing Stress On The Mechanical Behavior Of Cement-Improved And Cement-Fiber-Improved Soft Soil, Ryan Daniel Starcher
Theses and Dissertations
In order to improve the engineering properties of soft soils, materials, such as cement and fiber, can be introduced to the soil mass. Currently, design criterion for a cement-soil mixture requires only the measurement of unconfined compressive strength. This simple measurement may not be adequate to describe the behavior that results from differing field loading conditions. A series of consolidation tests and unconfined compression tests were conducted with special attention being paid to the effects of curing time and vertical curing stress. It is shown that the introduction of cement into soft soils results in decreased compressibility and increased unconfined …