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Pro129

STRENGTH AND BOND CHARACTERISTIC OF UHPC PASTES WITH QUATERNARY BINDERS



Author(s): P.P. Li, Q.L. Yu and H.J.H. Brouwers
Paper category: Proceedings
Book title: Proceedings of the 2nd International Conference on UHPC Materials and Structures (UHPC2018-China)
Editor(s): Caijun Shi and Baochun Chen
ISBN: 978-2-35158-219-0
e-ISBN: 978-2-35158-220-6
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 361-367
Total Pages: 7
Language : English


Abstract: In the present research, UHPC pastes are designed with quaternary binders, namely Portland
cement, slag cement with 50% of ground granulated blast slag, limestone powder and
micro/nano silica, at a relatively low water-to-powder ratio of 0.2. The compressive strengths
of UHPC pastes are measured and analysed after the curing age of 28 days and 56 days,
respectively. The fibre-to-matrix bonding properties of UHPC pastes are characterized after 56
days. The results show that it is possible to use those quaternary binders system to design UHPC
matrix with compressive strength ranging between about 140 MPa and 180 MPa at a relatively
low water content. Slag and limestone powder can greatly improve the sustainability without
sacrificing too much strength and fibre-to-matrix bonding force of UHPC pastes. 5% micro
silica contributes to higher compressive strength of UHPC pastes containing Portland cement,
while 3% nano silica has higher efficiency than 5% micro silica for mixtures with slag cement.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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