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Response of prestressed concrete tension membersBischoff, Peter H. January 1983 (has links)
No description available.
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The production and structural behavior of high-strength concrete / by Ali Nikaeen.Nikaeen, Ali January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
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Micro-cracking and crack growth in notched concrete and mortar beamsGill, Laurence Mark 05 February 2015 (has links)
A dissertation submitted to the Faculty of Engineering, University of the
Wttwatersrand, Johannesburg, in fulfilment of th e degree of Master of
science in Engineering
Johannesburg 1988 / This dissertation addresses the question of the fracture
behaviour of notched concrete and mortar beams.
The major purpose of the work was to study the development
of the micro-cracked zone and identify the point
at which main crack growth began, and thus to characterise
concrete and mortar at the start of main crack
growth.
Notched concrete and mortur beams of width 100 mm,
depth either 200 mm or 300 nun, and with a span/depth
ratio of three, were tested. Measurements of midspan
deflection, midspan load, surface displacements across
the fracturing section and ultrasonic pulse transit
time were made. Ordinary Portland cement and mineral
aggregates were used for the concrete and mortar
beams.
The J'■integral, surface displacements across the fracturing
section and ultrasonic pulse transit time measurements
were used to detect the onset of main crack
growth. It was found that a reduction in the load carrying
capacity of concrete and mortar is possible due
to micro-cracking only. The value of the J-integral
at the start of main crack growth was found to be essentially
the same for concrete and mortar. The value
of the J-integral at the start of micro-cracking was
■ <
found to be essentially the same for concrete and
mortar, and about 40% of the value of the J-integral
at the start of main crack growth. The value of the
J-integral at the start of micro-cracking and at the
start of main crack growth was found, on average, to
increase for an increase in beam depth.
Surface displacements across the fracturing section
showed the tension zone at the start of main crack
growth to be approximately twice the size of the compression
zone for both concrete and mortar. The'size
of the micro-cracked zone, as determined from surface
displacements across the fracturing section, was found
to be 42% of the residual ligament depth for concrete,
and 41% of the residual ligament depth for mortar.
Scatter in the results was found to be considerable,
thus meaning that only general trends could be identified
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Architectural concrete norms : causes and processes affecting performance, construction, and appearance.Blewett, Clarence Richard January 1977 (has links)
Thesis. 1977. M.Arch.A.S.--Massachusetts Institute of Technology. Dept. of Architecture. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH. / Bibliography : p. 177. / M.Arch.A.S.
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Assessment of the seismic performance of inadequately detailed reinforced concrete columns : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering at the University of Canterbury /Boys, Alistair. January 2009 (has links)
Thesis (M.E.)--University of Canterbury, 2009. / Typescript (photocopy). Includes bibliographical references. Also available via the World Wide Web.
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106 |
Development length of 0.6-inch prestressing strand in standard I-shaped pretensioned concrete beams /Barnes, Robert Wesley, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 397-401). Available also in a digital version from Dissertation Abstracts.
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Ferrocement marine mixes in warm and humid environment.Kowalski, Tadeusz Gabriel. January 1900 (has links)
Thesis--Ph. D., University of Hong Kong. / Offset from typescript.
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Effect of temperature variations on premature cracking of dowel jointed concrete pavementsWilliam, Gergis W., January 2003 (has links)
Thesis (Ph. D.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains viii, 139 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 123-139).
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Retrofitting of deep concrete coupling beams by laterally restrained side platesCheng, Bei, 程蓓 January 2011 (has links)
published_or_final_version / Civil Engineering / Doctoral / Doctor of Philosophy
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Evaluation of thermal stresses in a concrete box girder bridge /Clark, John H., January 1989 (has links)
Thesis (Ph. D.)--University of Washington, 1989. / Vita. Includes bibliographical references (leaves [187]-191).
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