Civil and Environmental Engineering Commons^™

Epoxy Resin Admixture For Concrete, Kuo-Chu Hu

Masters Theses

"This thesis describes laboratory tests on concrete having epoxy as an admixture. Cylinders for compression and elastic modulus tests were cured under two different curing conditions, standard laboratory cure and a simulated job cure. Beams cured under laboratory conditions were tested for flexural strength. Test results show the compressive strength increases with an increase of epoxy content for job curing conditions. However, compressive and flexural strengths of specimens cured under laboratory conditions show a slight decrease. The elastic modulus of concrete containing epoxy also decreases in comparison to ordinary concrete"--Abstract, page ii.

Effect Of Single Stirrups On Reinforced Concrete Beams, Vinodbhai T. Patel

Masters Theses

"This study was made to determine the location of vertical stirrups and also to determine the amount of stirrup-steel required to prevent diagonal cracking. The study is limited to rectangular, simply supported, reinforced concrete beams subjected to a concentrated point load at the center of the span. Five sets, each containing three beams were tested. Two sets were cast without stirrups and the results were used to locate the stirrups for the remaining tests. The other three sets were cast with one stirrup on either side of the central load. Stirrups were of the "U" type and formed form No. …

Investigation Of Effects Of Cold Forming On Mechanical Properties, Kenneth W. Karren, George Winter

CCFSS Library (1939 - present)

INTRODUCTION All of the divisions of this report consist of either experimental or theoretical investigations of the various aspects of predicting the magnitude and distribution of changes in the mechanical properties (particularly the yield strength) of coldformed members. The prior work performed under this project, was conducted to determine the changes brought about in the mechanical properties of structural sheet steels by (1) simple uniform uni-directional prestrain of varying amounts and (2) simple cold working caused by cold forming sheet into corners as is commonly done in light gage cold formed structural members. Included in this report are: a study …

The Performance Of Beams And Columns Continuously-Braced With Diaphragms, Gordon P. Fisher, S. J. Errera

CCFSS Library (1939 - present)

INTRODUCTION Under the general title of "Performance of Steel-Framed Buildings and Structural Members Braced with Light-Gage Steel Diaphragms", sponsored at Cornell University by the American Iron and Steel Institute, an investigation has been proceeding in two separate but closely interrelated phases, referred to as: Subproject A - Performance of Steel-Framed Buildings Braced with Light-Gage Steel Diaphragms Subproject B - Performance of Beams and Columns Continuously-Braced with Diaphragms. The investigation now referred to as Subproject B was sponsored by the American Institute of Steel Construction from June, 1961 to June, 1963 after which A.I.S.I. assumed sponsorship with the cooperation of A.I.S.C. …

Investigation Of Zero Sidesway For Rigid Frames, Dolatray S. Mehta

Masters Theses

"This study was made to determine the location of a point at which a vertical load may be applied to a rigid frame structure and produce zero sidesway, the so called zero sidesway axis. For concentrated loads equations have been derived for zero sidesway. For uniform and triangular loads graphs showing zero sidesway for various ratios of column and beam stiffnesses and height ratios have been plotted"--Abstract, page ii.

Stiffness Of Lightweight Reinforced Concrete Beams, Rameshchandra H. Patel

Masters Theses

"This work is a presentation of the findings of an experimental measurement of stiffness (El) for reinforced and nonreinforced lightweight and normal concrete. The experimental values of stiffness are compared with values obtained using standard reinforced concrete theory. In all, thirty beams, fifteen for lightweight and fifteen for normal concrete, each having the compressive strength of approximately 4, 500 psi, were tested. In addition to stiffness measurements, a relationship was obtained between the dynamic modulus of elasticity and the ultimate compressive strength at various ages for the particular lightweight concrete used"--Abstract, page ii.

Effect Of Poly-Ethylene Glycol, A Non-Shrinking Agent, On Strength Properties Of Concrete., Vasantrai Vallabhbhai Desai

Masters Theses

"This thesis describes laboratory test made on plain concrete cylinders and ~earns for compressive strength, flexural strength, durability and shrinkage, using poly-ethylene glycol (ElOOO) as a non-shrinking admixture. The tests were conducted in the Materials Laboratory of the Civil Engineering Department.

The test results show that poly-ethylene glycol has the effect of reducing the compressive and flexural strength of plain concrete. The admixture also has the effect of reducing shrinkage, and reversing it, causing expansion with large percentage of its use. For the number of cycles of alternate freezing and thawing reported the admixture did not have any effect on …

The Effect Of Gap Graded Aggregate On The Properties Of Hot Mix Asphaltic Concrete, Maurice L. Northcutt

Masters Theses

"The objective of this investigation was to determine the effects of deviations from the recommended gradation of aggregate upon asphalt concrete mixes. The aggregate used in this study was a good grade Missouri Limestone and was mixed with an asphalt cement of 85-100 penetration grade. A control mix was designed in accordance with the Marshall Method using a gradation recommended by the Asphalt Institute. Ten aggregate blends were prepared by wasting certain fractions or combinations of fractions and the wasted weights were redistributed into the coarser or finer aggregate sizes. The test mixes were designed using the same method and …

A Study Of The Stabilization Of Putnam Silt Loam With Large Organic Cations, George C. Bennett Jr.

Masters Theses

"Laboratory tests were conducted to determine if Aliquat, a quaternary ammonium chloride compound, could be used to change the physical properties of Putnam silt loam. The effects of adding varying amounts of Aliquat to the soil were measured in terms of the results of Atterberg limits tests, the moisture-density relationship, unconfined and triaxial compressive strength, and capillary adsorption characteristics. A small change in the Atterberg limits, the optimum moisture content, and the maximum dry density was noted. An increase in the unconfined compressive strength and a reduction in the moisture adsorption potential was accomplished by the addition of 0.25 and …

The Effect Of The Static Compaction On The Mechanical And Physical Properties Of Asphalt Concrete Hot-Mixes, Abdel-Gawad A. Bahgat

Masters Theses

"The objective of this investigation was to study the effect of the static compaction effort upon the physical and mechanical properties of asphalt concrete hot mixes. To study the effect of the static compaction upon the physical properties of the asphalt mixes, six mixes were prepared using hard, well graded crushed limestone as an aggregate, blended with an 85-100 penetration grade asphalt cement. The control mix was prepared and tested in accordance with the Marshall method for mix design. The other five mixes were prepared and tested using the same procedures of Marshall except for compaction, where five different static …

Determination Of Transient Temperature Stresses In Plates, Teh Yu Hu

Masters Theses

“The purpose of this thesis is to determine the transient temperature stresses in two-dimensional plate structures restrained against rotation at the ends but not restrained against elongation. In this investigation, only one-dimensional heat flow is considered. The heat flow is first treated as a problem in pure conduction and then the effects of convection through a boundary layer are considered.

The differential equation of transient heat conduction is solved by Fourier series and Duhamel’s theorem, and a graphical method of solution for temperatures in terms of dimensionless parameters is presented.

Solution of this problem is valid for a semi-infinite plate …

Analysis Of Space Frames By Moment Distribution., Ting-Hwa Wang

Masters Theses

"This work presents an analysis of space frames and planar frames loaded in different planes by the method of moment distribution and the theory of superposition. From this analysis it is found that the torsional stiffness of frame members has a great effect on the final bending moments when twisting moments are applied to the frame. The analysis of space frames considering the forces, stresses, and moments in all three dimensions always yields a design more accurate and economical in material than the traditional planar frame analysis"--Abstract, p. i

The Plastic Behavior Of Beams With Butt Welded Connections., Paul George Hayes

Masters Theses

"The purpose of this study is to determine the length of butt welds required to develop the full plastic section modulus of a 6 WF 20 rolled section of A-36 steel. The members were electric arc welded with LR 6070 electrodes. Two-point loading was used to develop a zone of pure moment with zero shear where these members were joined.

At the cross-section to be welded, all the flange edges were prepared to receive a single-vee butt weld and the webs were prepared for a double-vee butt weld. In all cases the full length of the flange was welded. However, …

Compaction Characteristics Of Fine Grained Soils., Lewis Clyburn Sowell

Masters Theses

"The existing theories of compaction of soi Is are reviewed. The effect of varying the compactive effort on dry density, optimum moisture content, and compressive strength for three fine grained soils is investigated. These samples consist of si I ty clay (CL), plastic clay (CH), and loess (ML). The test results indicate that compactive effort has an important effect on the shape of the moisture density curve and that a potential for over compaction increases with a higher plastic index and c l ay content. At water contents above the Standard AASHO optimum value, the compressive strength is not appreciably …

Velocity And Kinetic Energy Distribution Of A Submerged Jet., Patrick Shepard Couch

Masters Theses

"The velocity distribution in a cylindrically bounded region of water induced by a submerged axisynnnetric jet of water, has been investigated. Velocity profiles at successive levels were constructed. The continuity equation was shown to be only approximately verified by the velocity profiles.

The kinetic energy for each level was computed and given mathematical expression"-- Abstract, p. 2

A Study Of Cation Exchange And Soil Properties, Arthur G. Follett

Masters Theses

“The objective of this investigation is to study the effect of clay content and cation exchange capacity on the liquid and plastic limits of a soil system in the natural, flocculated, and dispersed states. Putnam and Clarksville natural soils found extensively in Missouri and a synthetic soil composed of Kaolin clay and Clarksville fine sand and silt were tested.

The results of the investigation indicate that a general relationship exists between the high cation exchange capacity of a soil and the extreme variances of the liquid and plastic limit values for the flocculated and the dispersed states. The cation exchange …

The Toxic Effects And Fate Of Selected Pesticides In Natural Water., Donald Lee Evans

Masters Theses

"The extensive application of synthetic organic pesticides in the United States has created many problems, particularly with respect to fish life. While a number of investigations have been undertaken to determine the toxicity of several pesticides to various species of fish, a great deal of research work is needed before the problem is completely understood.

The individual toxicities of DDT, BHC, 2.,4-D, and Sevin to western golden shiners were determined by means of the bioassay procedure at a t empera t ure Of 16oc. The four chemicals studied were found to be toxic to the test fish with Median Tolerance …

Effect Of Hydroxyethyl Cellulose On Properties Of Concrete At Early Ages., Vipinchandra R. Shah

Masters Theses

"In this investigation, hydroxyethyl cellulose was used as an admixture in plain concrete. The admixture was tested for its effect on the compressive strength of plain concrete cylinders and for its effect on the flexural strength of plain concrete beams. Specimens were also tested for freeze-thaw durability and shrinkage.

The test results indicated that hydroxyethyl cellulose has the effect of increasing the compressive strength and decreasing the flexural strength of plain concrete. The rapid freezing and thawing tests showed that the durability increases with increase in amount of admixture.

The tests were carried out in the Materials Laboratory of the …

The Effect Of Plastic Deformations On Grain Boundaries., Jayendra Jamnadas Shah

Masters Theses

"The purpose of this study is to determine the effect of the plastic deformations on the grain boundaries and the grain structure of mild steel. Five beams tested were of A-36 steel and of 6 WF 20 rolled section. Central loading was used to develop a plastic tinge at the cent1:1r.

At the center, where a plastic hinge was formed, the effect of the plastic deformations on the grain structure was severe in all the samples taken from the tension side of all plastically or partially plastically loaded beams. In fully plastically loaded beams this effect had spread on both …

Effect Of Internal Pressure On Compressive Buckling Stress Of A Cylindrical Shell Under Eccentric Loading, Chao-Ping Chu

Masters Theses

“In this paper, an investigation was made of a thin- walled cylindrical shell under compressive load with various eccentricities and internal pressures to study the effect of the internal pressure on the compressive buckling stress of the shell.

So far, theoretical methods have not been devised to solve this problem; therefore, an experimental study was carried out. The experimental results indicated that the buckling load of the shell decreases as the eccentricity increases, that the buckling stress increases as the eccentricity increases, and that the change in buckling stress increases with an increase of internal pressure and is very nearly …

Structural Analysis Of Open Channels On Elastic Foundation., Wan-Cheng Liu

Masters Theses

"This study is to analyze continuous open channels used for fluid flow and supported on soil which is considered to provide an elastic foundation. The basic assumption is that the reaction forces of the foundation are proportional at every point to the deflection of the channel at that point. The walls of the channel are considered vertical in all cases but are subjected to various lateral pressures due to different embankment loading conditions"-- Abstract, p. ii

Stability Investigation Of Pipe-Line Suspension Bridges, Ten-Hsi Chen

Masters Theses

“This thesis presents an analysis of the behavior of pipe line suspension bridges under the action of wind. From this analysis a differential equation of vertical vibration is derived and solved, and the possible methods of preventing its vibration are discussed and suggested”--Abstract, page ii.

The Effect Of Metallic And Inert Electrodes On The Electrochemical Degradation Of Alkyl Benzene Sulfonate., Thomas Patrick O'Farrell

Masters Theses

"The purpose of this study was to investigate the effects of various metallic and inert electrode combinations on the electrochemical degradation of alkyl benzene sulfonates (ABS) in water and to determine the rate and degree of AB3 removal.

Selected combinations of copper, aluminum, iron, and carbon plate electrodes were studied in systems of tap, distilled and river waters containing an initial ABS concentration of 10 mg/1, using a current density of approximately 0.5 milliamperes per square centimeter and a total detention time of 6 hours. Samples were collected at appropriate time intervals and were analyzed for ABS, chemical oxygen demand …

Non-Ferrous Metal Mining And Smelting In Australia

School of Mines and Metallurgy Bulletins

Bulletin was published without an Abstract

The Performance Of Beams And Columns Continuously Braced With Diaphragms, George Pincus, Gordon P. Fisher

CCFSS Library (1939 - present)

INTRODUCTION In Progress Report No.1, it was reported that the initial conception of the problem was that diaphragms act almost exclusively in shear when called upon to brace compression members, and that it had been decided to test single columns with finite widths of diaphragm attached, with width of the sheet being varied to provide a range of lateral support up to that which permitted full column strength, based on strong axis to be developed. However, the first test of this kind, Test CB-l, clearly indicated that the diaphragm acted essentially in flexure only and thus had the same effect …

The Chemical Oxidation Of Alkyl Benzene Sulfonates With Potassium Permanganate., Rameshchandra M. Patel

Masters Theses

"The purpose of this investigation was to study the chemical oxidation of alkyl benzene sulfonates with potassium permanganate. ABS concentrations of 3, 5 and 10 mg/1, and potassium permanganate dosages of 0.5, 1.25, 2.5, 5.0, 10.0, 20.0, 40.0 and 80.0 mg/1 were used. The study was made in deionized water at room temperature and a pH value of 8.5. A 5-hour detention period was provided. The ABS concentration, potassium permanganate concentration, foam volume and foam stability were the main parameters employed.

It was found that potassium permanganate significantly reduced the ABS concentration and foam volume. The rate of the oxidation …

Derivation Of A Method To Determine Reactions And Deflection Of A Continous Beam On An Elastic Foundation, Louis Richard Fuka

Masters Theses

“The purpose of this thesis is to develop a method for determining the reactions and deflection curve of continuous beams partially supported by an elastic foundation. The method involves representation of an arbitrary loading and the intermediate redundant reactions as Fourier Series. Redundant intermediate reactions are determined by the solution of an equal number of linear equations. The remaining reactions are determined by the application of statics.

This same method can be used for simply supported beams on an elastic foundation and for continuous beams without an elastic foundation”--Abstract, page ii.

The Effect Of Shear Deformation On The Slope Deflection Coefficients., Rajni C. Amin

Masters Theses

"This study was made to determine the effect of shear deformation on stiffness coefficients and carry over factors that are normally used in the calculation of moments in continuous beam or frames by the slope-deflection and Moment Distribution method.

Using the method of total strain energy, the vertical shear V and angle of rotation Ө caused by unit moment were determined for bending moment only and then determined for shear deformation plus bending moment, then carry over factors and stiffness coefficients were computed for each case. The relative effect of shear deformation is small for small depth ratio d_{b …}

Investigation Of Stresses And Deflections In An Inclined Beam., Jayant Chhaganlal Soni

Masters Theses

"In this thesis an investigation has been made of the effect of inclination on strains and deflections in an inclined rectangular steel beam. To compute the strains and deflections Newmark's Numerical Procedure has been used. An experiment has been carried out on a rectangular steel beam for four different load increments and eight different inclinations. To compare the experimental and analytical data, graphs have been drawn for the experimental and analytical quantities of strains and deflections for all the four load increments and eight different angles of inclination. Results of the investigation indicate that the strains and deflections at inclinations …

Removal Of Alkyl Benzene Sulfonate By Precipitation With Cationic Surfactants., Phillip E. Custer

Masters Theses

"The extensive use of synthetic detergents, particularly the nonbiodegradable alkyl benzene sulfonate (ABS), has created many difficulties in water and wastewater. Although a number of processes have been proposed for the abatement of the synthetic detergent problem, a completely satisfactory solution has yet to be developed.

Following a preliminary investigation, three cationic agents, Bionol R0-50, G-263 and Primafloc C-5 were selected to be studied in detail in order to determine their ability to remove ABS by precipitation. Studies were conducted in deionized water, river water and domestic sewage systems using an initial ABS concentration of 10 mg/1 and cationic dosages …