In-situ measurement of formwork pressures generated by Self-Compacting Concrete

Abstract

Self-Compacting Concretes (SCC) are a special category of concretes and directions for designing formwork relative to ordinary concretes do not apply to them. In this paper an experimental study on formwork pressure exerted by SCC is reported. The behaviour of the SCC was investigated in instrumented formworks provided for two different types of pressure sensors: common diaphragm pressure transducers and dilatometer cells. In situ measurements of formwork pressure were carried out on walls and concrete columns 6m and 9m high, 0.30m thick and 2.50 or 0.50m wide respectively. Successfully, both types of sensor were in agreement describing the continuous time variation of the pressures.

Analysis of casting rate for the validation of models developed to predict the maximum lateral pressure exerted by self-compacting concrete on vertical formwork

“…Giammatteo et al [40] evaluated the effect on lateral pressure due to different structural shapes. The authors evaluated lateral pressure in a wall and a column.…”

“…The experimental data for SCC poured from the top of the formwork were those supplied by CEBTP [29], Proske and Graubner [24], Leemann and Hoffmann [30], Khayat et al [13] Assaad et al [31], Khayat and Assaad [32,33], Khayat [34], Billberg et al [10], Tejeda-Dominguez et al [35], Assaad and Khayat [36][37][38][39], Leemann et al [28], Giammatteo et al [40], Kwon et al [12], Beitzel [41], McCarthy et al [42], Gardner et al [27] and Billberg et al [43].…”