Abstract
Currently, reduction of environmental effects of the cement industry is an issue of global interest and one of the alternatives is to replace clinker with additions such as volcanic powder. The purpose of this work is to study the influence of up to 400 hardening days of volcanic powder, obtained from the last eruption of the Calbuco volcano (Chile), on the pore structure, mechanical performance, and durability-related properties of mortars which incorporate up to 20% volcanic powder as a substitution for clinker. In addition, an evaluation of greenhouse gases emissions was performed in order to quantify the possible environmental benefits of incorporating the volcanic powder in the mortars. The results obtained indicated that mortars with contents of 10% and 20% of volcanic powder had adequate service properties and improved all durability-related properties overall as compared with those noted for ordinary Portland cement. Additionally, the use of up to 20% volcanic powder makes it possible to reduce the CO2 emissions of mortars by almost 20%, demonstrating the advantages of incorporating this addition in mortars.
Highlights
The great development of the construction industry in recent decades has entailed a worldwide rise in both the demand for raw materials and the production of a large quantity of construction and demolition wastes
The main aim of this research is to study the influence of the addition of volcanic powder (VP), obtained from the last eruption of the Calbuco volcano (Chile), on the pore structure, mechanical performance, and durability of mortars which incorporate 10% and 20% of VP as a substitution for clinker, as compared with reference mortars which were prepared with ordinary Portland cement without incorporating additions
In all the mortars studied, the pore structure was probably refined as the curing days increased due to the progressive development of clinker hydration and the pozzolanic reactions of the VP; due to the progressive development of clinker hydration and the pozzolanic reactions of the VP;
Summary
The great development of the construction industry in recent decades has entailed a worldwide rise in both the demand for raw materials and the production of a large quantity of construction and demolition wastes. This has produced inevitable environmental problems around the construction industry [1]. Several investigations have been based on one solution which is related to the study of the effects of substituting different concrete constituents with reused materials [3,4,5,6,7]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
