New Additions for the Design of Eco-Efficient Cements. Analysis of Pozzolanic Reaction Kinetics

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Title: New Additions for the Design of Eco-Efficient Cements. Analysis of Pozzolanic Reaction Kinetics

Author(s): Gabriel Medina, José María Medina, Isabel F. Sáez del Bosque, Moisés Frías, María Isabel Sánchez de Rojas, César Medina

Publication: Special Publication

Volume: 320

Issue:

Appears on pages(s): 9.1-9.14

Keywords: Supplementary cementitious materials, waste, pozzolanic activity

Date: 8/1/2017

Abstract:
This study assesses the pozzolanic activity of two types of waste, one from biomass power plants and the other from the ornamental granite industry. These materials were first characterised chemically, physically, morphologically and mineralogically. Pozzolan reaction kinetics in the waste/portlandite system were then researched by analysing the crystalline compounds with instrumental techniques such as TGA and XRD. The findings showed that bioenergy plant waste exhibited pozzolanic activity comparable to the values reported for other agri-forest additions and greater than recorded for fly ash. Activity in the granite industry waste, in turn, was greater than in fly ash and lower than in silica fume and New Additions for the Design of Eco-Efficient Cements. Analysis of Pozzolanic Reaction Kinetics 9.3 sanitaryware waste. In light of these results, both types of waste would potentially be apt for use as additions in eco-friendly cements.