Thesis (Ph. D.)--University of Wisconsin--Madison, 1968. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin, 1947. / Typewritten. eContent provider-neutral record in process. Description based on print version record.

Thesis (M.S.)--University of Wisconsin, 1950. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 69-78).

Thesis (M.S. in civil engineering)--Washington State University, December 2006. / Includes bibliographical references (p. 165-168).

Thesis (Ph. D.)--Washington State University, August 2007. / Includes bibliographical references.

No description available.

The new shear machine enforces more uniform deformations than the conventional triaxial test. A low compliance pore pressure measuring device is an integral part of the machine. The machine described is capable of applying cyclic normal stress up to 1000 lb. per sq. in. and alternating cyclic shear stress up to ± 500 lb. per sq. in. Static loads can be taken 50 percent higher. The test specimen can be cut from an ordinary undisturbed drill hole sample, being 2 ins. square and 1 1/8 in. high. Height variation of ± 1/8 in. is permitted during testing, but there is no "dead" zone; the entire sample is subjected to the applied shear. An analytic solution is presented, for the boundary value problem of an anisotropic elastic sample in the tests to be described. This solution shows the variation of the stress field and deformations throughout the sample. For the benefit of any future simple shear machine designs, the theoretical relationship was also examined between the ratio of sample length to height and the uniformity of stresses and displacements within the sample. In comparing test results from the new machine with conventional triaxial tests, it was found that the measured strengths are different. Some of the results suggest that the triaxial test could over-estimate the strength of undrained sand. The difference between simple shear and triaxial conditions is, therefore, of more than theoretical interest. Liquefaction of undrained sand was readily induced by alternating shear in the new machine. It was found that liquefaction alters the structure of a sand sample, rendering it more susceptible to re-liquefaction. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

This thesis is to determine the shear capacity of a reinforced concrete beam column connection at zero moment. The joint under study is formed by casting the beam against a smooth column face with the top and bottom reinforcing bars projecting through the joint and no key or surface roughening provided. The variables considered are the size of reinforcing bars and the distance to the first beam stirrup. The strength of the joint is broken down into components of a) top dowels b) bottom dowels and c) interface bond and friction. The components and the entire joint strength are investigated theoretically and experimentally. Comparisons of both theoretical and experimental results are compared and show that the strength of the joint can be predicted from the sum of the top and bottom dowel strengths. The strength of this beam column connection is shown to provide adequate strength and a method is suggested for calculating the shear capacity of the joint. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

This thesis presents an analysis and experimental verification for a multilayer beam in bending. The formulation of the theoretical analysis includes the combined effect of shear and geometric nonlinearity. From this formulation, a finite element program (CUBES) is developed. The experimental tests were done on multilayer, corrugated paper beams. Failure deflections and loads are thus obtained. The experimental results are reasonably predicted by the numerical results. Based upon this comparison, a maximum compressive stress is determined for the tested beam. Finally, design curves for the tested beam are drawn using the determined maximum compressive stress and the finite element program. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

An experimental method was developed for characterizing time-dependent slurries of elongated particles in a coaxial cylinder viscometer which has a wide gap between the inner rotating cylinder and the stationary cup. A model slurry system was studied; it consisted of a dispersed phase of regularly sized nylon fibers and a dispersing medium of an aqueous solution of polyethylene glycol with dextrose and sodium chloride, each of whose effects on the time-dependent nature of the slurry could be examined separately. The slurry gelled in the viscometer on standing. The time-variation of shear stress exerted on the wall of the inner cylinder rotating at a constant angular velocity was recorded as a stress decay curve. It was found that only a part of the gap between the cylinders of the viscometer flows under shear, and that the thickness of the flowing layer increases with time and approaches an equilibrium value. The time-variation of the thickness of the flowing layer Rx(t) as well as the shear stress decay was measured for fifteen slurries. An empirical reaction-rate type model was constructed for the time-variation of the thickness of the flowing layer Rx(t). A second order-zero order reversible reaction model fitted the experimental data well. The three fitting factors of the model were the equilibrium value of the thickness of the flowing layer Rx∞, and the two rate parameters kf/B and B/A. These factors (Rx, Kf/B, and B/A) were correlated with particle length-to-diameter ratio, volume fraction of particles in the slurry, and angular velocity of the rotating cylinder. / Applied Science, Faculty of / Chemical and Biological Engineering, Department of / Unknown