A PRELIMINARY STUDY ON DEVELOPMENT OF ULTRA-HIGH STRENGTH GEOPOLYMER MORTARS

Author(s): Yiwei Liu, Caijun Shi, Zuhua Zhang, Ning Li and Long Lei
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: 277-286
Total Pages: 10
Language : English

Abstract: Ultra-high performance concrete has been used widely in many fields. The advent of
geopolymers has opened up an opportunity for replacing Portland cement, which is eco-
unfriendly during the production process and provides with a more compact and denser matrix
that makes the strength of materials stronger. In this study, based on study effects of slag/fly
ash ratio and silica fume content on flowability, setting time, compressive strength and
microstructural characterization, the possibility and feasibility of using industrial by-product to
manufacture high performance concrete is explored. The results indicate that the slag/fly ash
ratio and silica fume have a significant influence on flowability, setting time and compressive
strength. The mini slump flow was increased with the increase of slag/fly ash ratio while
decreased with the addition of silica fume. The setting time was increased with the increase of
slag/fly ash ratio and the addition of silica fume. The compressive strength is dependent on the
slag/fly ash ratio and the addition of silica fume. FTIR results find that the main bands of C-A-
S-H and N-A-S-H are observed with the variation of slag/fly ash ratio and silica fume does not
react completely.

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