concrete vibration

concrete vibration

Energetic agitation of freshly mixed concrete during placement by mechanical oscillation devices at moderately high frequency to assist in its consolidation.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The reason for this lies in the connection and combination of some concrete pores caused by the concrete vibration and the missing of releasing agent for concrete blinding.
High centrifugal force, ranging from 360 pounds in the SMART 40 to over 1,030 pounds in the SMART 56, combines with stable speed and high amplitude to ensure good concrete vibration with fewer dips.
However, the most common use of SCC is probably when there is a narrow section to be cast, where the proper concrete vibration could be hindered, as an example of this, casting against roofs in tunnels so called tunnel linings can be mentioned.
The Italvibras range includes foot-mounted and flange-mounted electric vibrators; high-frequency electric vibrators, Concrete-Vibra Solutions and solutions for concrete vibration (electronically controlled plants and electronic vibration frequency regulators).
A concrete vibration test stand with a 48 Hz and an amplitude range of 0.5mm-0.8mm as the vibration source, one set of specimens was selected every 30 min from 90 min to 330 min after the concrete was poured to impose 30 s of vibration and to investigate the variation in the concrete's strength at 3 d, 7 d, and 28 d.