| Issue |
MATEC Web Conf.
Volume 120, 2017
International Conference on Advances in Sustainable Construction Materials & Civil Engineering Systems (ASCMCES-17)
|
|
|---|---|---|
| Article Number | 02009 | |
| Number of page(s) | 10 | |
| Section | Sustainable Concrete Technology | |
| DOI | https://doi.org/10.1051/matecconf/201712002009 | |
| Published online | 09 August 2017 | |
Evaluation of pozzolime mixtures as a sustainable binder to replace portland cement in structural concrete
1 MSc, Ministry of Youth and Sport, Baghdad, Iraq
2 PhD, University of Technology, Baghdad, Iraq
* Corresponding author: 40076@uotechnology.edu.iq
This study aimed to evaluate the properties of concrete mixes produced mainly of hydrated lime and different types of Pozzolan. This mixture, which is nominated as PozzoLime, is presented as an alternative sustainable binder to replace Portland cement in concrete. The study tends to optimize the Pozzolan to lime proportions with respect to workability and strength of concrete. The investigated parameters are; water to binder ratio, aggregate to binder ratio and type of Pozzolan. The effects of these parameters on properties of the mixture in fresh and hardened states are studied. The included tests were; temperature profile, slump, fresh and oven-dry density, compressive, splitting tensile and flexural strength and dynamic modulus of elasticity. Silicafume, Fly ash and Metakaolin were the used Pozzolan in this study .The temperature profile through hydration (coffee cup test) shows that all PozzoLime mixtures have significantly less environmental impacts (evolved heat) than Portland cement. The results also show that structural concrete with more than 28 MPa compressive strength at 28 days age can be produced by a binder consisted of 1:1 by weight ratio of Silicafume to hydrated lime, , and with a total binder content of 333 kg/m3.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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