Hulshizer, A J and Desai, A J (1984) Shock vibration effects on freshly placed concrete. Journal of Construction Engineering and Management, 110(2), pp. 266-285. ISSN 0733-9364
Abstract
Freshly placed (green) concrete is vulnerable to weakening of its properties if subjected to forces which disrupt the concrete matrix during the formative bond development process. Insufficient qualitative data, relating to the establishment of shock-type vibration limits for green concrete has been found in the engineering community. This shortage of substantiative information and a job schedule requiring concurrent concrete placement and excavation blasting dictated the need to obtain reliable data on the extent to which green concrete could be shock-vibrated without detrimental effects. An extensive laboratory and field test program provided conclusive information to support a significant increase in the commonly imposed green concrete shock-vibration limits. Although green concrete was subjected to very high vibration levels, no critical damage limit was ever reached. Associated reinforcement bond tests questions the ACI 318-77 application of' “Top Bar” factors to horizontal wall splices.
| Item Type: | Article |
|---|---|
| Index terms: | excavation, vibration, program, field test, laboratory, reinforcement, green concrete, placement |
| Subjects: | software systems, research management, building materials, mechanical systems, data collection methods, construction operations, management |
| Topics: | Site Management, Human Resources, Engineering Principles, Research Practice, Digital Applications, Construction Materials |
| Descriptive scope: | 2 PC |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here