STUDY OF VIBRATION OF CONCRETE. REPORT 2. MECHANICAL IMPEDANCE MEASUREMENTS.
Abstract
Work was conducted as part of a continuing study of the mechanics of consolidation by internal vibration of fresh concrete. Measurements of mechanical impedance, which is related to the energy transfer from the vibrator to the concrete, can be used in a systems-science approach to select an optimum frequency of vibration for a concrete-vibrator system. The particular system chosen for this study indicated the mechanical impedance to be a minimum for frequencies of vibration around 200 cps. Due to high damping in the concrete mixture the resonance peak is relatively broad and, therefore, the frequency can be varied within practical limits with little loss in the energy transfer. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1969
- Accession Number
- AD0695615
Entities
People
- Billy R. Sullivan