Particle size optimization in multi-component cement

Author(s): S. Adu-Amankwah, S. A. Bernal and L. Black
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 29-29
Total Pages: 1
Language : English

Abstract: The quest for sustainable alternatives to Portland cement has led to the exploration of a range of materials or their combinations, often with the aim of exploiting synergies in reaction or particle packing to maximize performance. Simultaneous optimization of both presents a viable option to increase the efficiency of cementitious materials. This study evaluated the effect of varying the fineness of the constituents in ternary CEM I – granulated blast furnace slag (GGBS) - limestone cement on hydration kinetics and strength development. Eight (8) ternary cement mixes were tested at constant w/c ratio. Hydration was followed by isothermal conduction calorimetry and X-ray powder diffraction. In addition setting time and compressive strength development up to 180 days of curing were determined. The efficiency associated with changing the fineness of each component was evaluated in terms of the net heat of reaction and compressive strength after keeping all other factors constant. The results demonstrate that, finer CEM I in the ternary cement promotes hydration prominently at early age and reflected in the compressive strength accordingly. The benefits associated with a finer GGBS and similarly limestone depends on the fineness of the other constituents in the blend. Optimization of these ternary systems can be achieved by considering the inter dependencies in terms of kinetics and microstructure development.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00

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