Early Age Properties of Green Concrete Containing High Mineral Additions

Title: Early Age Properties of Green Concrete Containing High Mineral Additions
Author(s): M.I.A. Khokhar, S. Staquet
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-110-0
e-ISBN: 978-2-35158-111-7
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 391 - 401
Total Pages: 11
Nb references: 35
Language: English

Abstract: It is very essential to study the early age hydration of concrete when using high content of mineral additions in green concrete. As the development of the mechanical properties of green concrete is slower than one of the ordinary Portland cement concrete, an in-depth understanding of the early-age hydration of the green concrete is necessary before using them at industrial scale. Setting and hardening are main early age properties of the concrete with high mineral additions. The setting and hardening behaviour was monitored by means of ultrasound waves since casting time. Tests were carried out at three temperatures (10°, 20°C and 30°C) for nine mixture proportions: a reference concrete with Portland cement, five green concretes with blast furnace slag (30 %, 50 % and 75 % of the binder mass content) or fly ash (30 % and 50 %) and three green concretes with combinations of limestone microfiller with blast furnace slag (50 % and 75 % of the binder mass content) or with fly ash (50 %). The use of limestone microfiller allowed decreasing the water/binder ratio of the green concretes by keeping the same rheology.

Online publication: 2010-12-02
Publication type : full_text
Public price (Euros): 0.00