Portable Vane Test to Assess Structural Buildup at Rest of Self-consolidating Concrete

Abstract

In the case of casting deep elements, self-consolidating concrete (SCC) should be designed with high thixotropy to reduce lateral pressure on the form work system and with low thixotropy in multilayer casting to avoid the formation of a weak interface between successive lifts. Therefore, thixotropy determination of SCC on site may be necessary. Thixotropy can be determined by evaluating the rate of structural buildup at rest. Quality control of SCC on site necessitates the use of a simple, robust, and inexpensive test. a field-oriented test (portable vane device) enabling the evaluation of the structural buildup at rest of concrete is highlighted in this paper. Relative errors between 4 and 20% are estimated for this device. Good correlations are observed between six indexes of structural buildup determined from the portable vane and concrete rheometer using 60 SCC mixtures. the classification of SCC mixtures according to thixotropic values and the ranking of the six structural buildup indexes are also introduced in this paper. © 2011, American Concrete Institute. All rights reserved.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Portable vane test; Self-consolidating concrete; Static yield stress; Structural buildup at rest; Thixotropy

International Standard Serial Number (ISSN)

0889-325X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Concrete Institute, All rights reserved.

Publication Date

01 Nov 2011

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