EFFECT OF LATER-STAGE CURING ON THE STRENGTH OF URTAL-HIGH PERFORMANCE CONCRETE WITH SAP

Author(s): Xianwei Ma, Jianhui Liu, Xin Yu
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: 427-434
Total Pages: 8
Language : English

Abstract: The hydration of high performance cement-based materials, especially with very low
water-to-binder ratio, is very limited. Change in external condition will affect its content of
water and later properties. This effect is more serious for ultra-high performance concrete.
The effect of short later-stage water curing on the strength of high performance cement-based
materials with water-to-binder ratio from 0.18 to 0.24 was studied. The results show that
when cement-based materials encounter water in the later stage, SAP absorbed water from the
outside again make up for the deficiency of insufficient water curing time in the early stage;
the strength is also further increased; higher SAP amount can have a more obvious
compensation effect. Therefore, if curing time at the early stage is very short, keeping a
proper period of water curing at the later stage is very beneficial for cement-based materials
with low water-to-binder ratio, especially mixed with SAP.

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