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The effects of continuous vibration of concrete during initial setOrnowski, Joseph Bartholomew, 1937- January 1965 (has links)
No description available.
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Application of infrared imaging to fresh concrete : monitoring internal vibration /Burlingame, Scott Edward, January 1900 (has links)
Thesis (M.S.)--Cornell University, May, 2004. / "PCA R&D serial no. 2806." "©Scott Burlingame 2004. All rights reserved. Reprinted by permission of Scott Burlingame." (Reprinted 2004 by Portland Cement Association, Skokie, Ill.) Includes bibliographical references (p. 460-465).
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Shock vibration resistance and direct tensile strength of concreteZheng, Wei, 鄭偉 January 2001 (has links)
published_or_final_version / Civil Engineering / Doctoral / Doctor of Philosophy
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Shock vibration resistance and direct tensile strength of concreteZheng, Wei, January 2001 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references.
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Compaction of asphaltic concrete by vibratory methodRahman, Mohammad Asad Hikman, 1962- January 1989 (has links)
In this report a relationship is established between the variables of compaction temperature, compaction effort, mixture gradation and, density, air void content and stability of asphalt mixtures. The Marshall method of mix design was used, and Vibratory Kneading Compactor was utilized for compaction. Results include Marshall Stability and density-air void analysis for 4 and 6-inch specimens. It was found that the densities generally increased with increase of compaction temperatures and compaction efforts. From selected sets of 6-inch specimens, 4-inch cores were obtained. Density and stability studies were carried out on these cores and the results obtained were found to have the same trends. The air void content and voids in the mineral aggregates decreased with the increase of compaction effort. Stability increased with the increase in density. All the results found, indicate strong effects of compaction temperature and compactive effort on the amount of air voids, VMA, density, and stability of the mixes used.
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A Computer Method to Evaluate the Vibration Response of Stiffened Floor Systems to Impact LoadDonahue, Michael E. 01 January 1982 (has links) (PDF)
Composite construction of floor systems with steel joist or I-beam stiffeners supporting a concrete slab have a tendency to sustain perceptible vibration due to small impacts. An engineering design aid, utilizing a small micro-computer and a BASIC computer program, was developed to analyze rectangular floor systems for susceptibility to sustain vibrations perceptible to humans. The analytical method for the normal modes of vibration using the Rayleigh-Ritz method and the superposition of the normal mode response is derived. A vibration index is calculated to qualitatively rate the floor. The computer method was validated using published data for an I-beam supported concrete slab and a design application for a steel-joist supported floor is demonstrated using a representative human induced impact load.
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