Přístupnostní navigace
E-application
Search Search Close
Publication detail
LEHNER, P. HRABOVÁ, K.
Original Title
Evaluation of degradation and mechanical parameters and sustainability indicators of zeolite concretes
Type
journal article in Web of Science
Language
English
Original Abstract
The continued need of reducing greenhouse gas emissions is the main motivator for the research related to the design of new cement-based composite materials. A sustainability indicator used in this study is a suitable tool to compare a group of concrete mixes based on their mechanical and degradation properties, together with information on the production and environmental value of each raw material. The study shows the results of the analysis of two groups of concretes with the replacement of the aggregate by zeolite. Experimental data were taken from a published study and numerical evaluations were made. The two groups differ in the value of the water-cement ratio, 0.44 and 0.40 respectively. The other additional cementitious materials (SCMs) used were volcanic pumice, ground granulated blast furnace slag grades 100 and 120, silica fume and metakaolin. The results of six and sixteen concrete mixes incorporating reference concrete made of Portland cement are compared. Compressive strength and diffusion coefficient results were obtained at 28, 56, and 91 days after concreting. The values of the sustainability indicator are determined in these times and ultimately allow the sorting of all the analyzed mixes. The results show that the use of zeolite alone in concrete is not always advantageous but rather depends on the specific w/c. Among many other interesting results, one of the most important is the sustainability index value (1.99) for concrete combining 15% of zeolite and 35% ground granulated blast furnace slag of grade 120, so almost twice as good as the reference concrete. Among concretes with only zeolite as SCM, 35% of the replacement is the most suitable choice. Furthermore, the combination with other SCMs can produce a significant positive effect in terms of sustainability.
Keywords
Concrete; Durability; Low-carbon concrete; Mechanical properties; SCM; Sustainability; Zeolite
Authors
LEHNER, P.; HRABOVÁ, K.
Released
31. 3. 2023
ISBN
0950-0618
Periodical
Construction and building materials
Year of study
371
Number
State
United Kingdom of Great Britain and Northern Ireland
Pages count
11
URL
https://www.sciencedirect.com/science/article/pii/S0950061823005020?utm_campaign=STMJ_AUTH_SERV_PUBLISHED&utm_medium=email&utm_acid=162817326&SIS_ID=&dgcid=STMJ_AUTH_SERV_PUBLISHED&CMX_ID=&utm_in=DM345715&utm_source=AC_
BibTex
@article{BUT182966, author="Petr {Lehner} and Kristýna {Hrabová}", title="Evaluation of degradation and mechanical parameters and sustainability indicators of zeolite concretes", journal="Construction and building materials", year="2023", volume="371", number="371", pages="11", doi="10.1016/j.conbuildmat.2023.130791", issn="0950-0618", url="https://www.sciencedirect.com/science/article/pii/S0950061823005020?utm_campaign=STMJ_AUTH_SERV_PUBLISHED&utm_medium=email&utm_acid=162817326&SIS_ID=&dgcid=STMJ_AUTH_SERV_PUBLISHED&CMX_ID=&utm_in=DM345715&utm_source=AC_" }