By ACI Committee 207

ISBN-10: 0870312774

ISBN-13: 9780870312779

Roller-compacted concrete (RCC) is a concrete of no-slump consistency in its unhardened kingdom that's quite often transported, positioned, and compacte utilizing earth and rockfill development gear. This document contains using RCC in constructions the place measures may be taken to deal with the iteration of warmth from hydration of the cementitious fabrics and attendant quantity swap to lessen cracking. fabric combination proportioning, houses, layout issues, building, and quality controls are coated.

Show description

Read or Download ACI 207.5R-11 - Report on Roller-Compacted Mass Concrete PDF

Best nonfiction_12 books

Download e-book for kindle: Hagers Handbuch der Pharmazeutischen Praxis: Stoffe L-Z by Professor Dr. Franz von Bruchhausen, Professor Dr. Siegfried

Dieser Band des Gebietes Stoffe enthält in alphabetischer Reihenfolge als Ergänzung zum Hauptwerk Monographien über Arzneistoffe, Hilfsstoffe, Impfstoffe und Sera sowie Reagenzien. In den Monographien werden Aussagen über die Synthese, die Eigenschaften, die Erkennung, die Reinheit, den Gehalt, die Wirkung und die medizinische Anwendung gemacht.

Thomas Flohr (auth.), Denis Tack, Mannudeep K. Kalra, Pierre's Radiation Dose from Multidetector CT PDF

Computed tomography (CT) is a strong procedure offering designated and assured diagnoses. The burgeoning use of CT has led to an exponential elevate in collective radiation dose to the inhabitants. regardless of investigations assisting using decrease radiation doses, surveys spotlight the inability of right realizing of CT parameters that have an effect on radiation dose.

The Safest Sicilian Second Revised Edition NEW !! by Alexander Delchev PDF

Bulgarian GM Delchev takes a brand new examine his Sicilian repertoire. After a brief pause, in 2008 he again to his puppy line, the Taimanov process. the results of his paintings is that this moment variation of The most secure Sicilian.

New PDF release: The Ecosystem of the Foreign Language Learner: Selected

This quantity examines chosen elements of the overseas language studying technique from an ecological point of view, adopting a holistic view on complicated interrelations between and inside organisms (L2 language novices) and their milieus (family, college and society). firstly, the non-public environment of the learner is considered, wherein strong affects are intertwined: cognitive and affective facets.

Extra info for ACI 207.5R-11 - Report on Roller-Compacted Mass Concrete

Sample text

The forms are removed and the membrane is left in place. It is more common, and often more practical, to install such a membrane after the RCC has been placed to avoid production impacts of concurrent membrane installation. 6 RCC against slipformed concrete element— Interlocking slipformed stay-in-place elements have been used to create a permanent face (Fig. 5(e)). Slipformed concrete has been used on several projects to provide a highquality concrete facing cast hours ahead of the RCC placement.

The RCC is then compacted with the aggregate. Grout tubes are installed in the aggregate as it is placed. Before raising the reservoir, but after sufficient cooling of the mass, the joint is pressure grouted from the bottom up with expansive grout. A continuous monolithic concrete mass results instead of two masses connected by a thin grout line. 8—Facing design and seepage control The upstream and downstream faces of RCC dams can be constructed by various means (Schrader 1985, 1993). The purpose of facings may be to control the seepage of water through the RCC lift joints, provide a surface that is resistant to freezing and thawing, provide a surface that is durable against spillway flows, provide a means to construct a face 35 steeper than the natural angle of repose of the RCC, and provide an aesthetically pleasing surface.

The horizontal lift joint surface between steps is typically not watertight. Any lift joint seepage that migrates to the down- stream face can normally escape out along the lift joint. In some cases, half-round drains have been installed through the steps to assure that uplift pressure can escape. If the pressure cannot escape (for example, if a continuous slab of concrete is used to create a smooth conventional spillway over the RCC), uplift is trapped on the RCC lift joint behind the slab. The design should address the implications of this potential increased uplift both within the mass and against the spillway slab, or drainage should be provided under the slab.

Download PDF sample

ACI 207.5R-11 - Report on Roller-Compacted Mass Concrete by ACI Committee 207


by David
4.3

Rated 4.03 of 5 – based on 41 votes