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A platform for research: civil engineering, architecture and urbanism
Rheology, Mechanical Properties and Durability of Self-compacting Concrete Using Sustainable Expanded Perlite Microspheres
https://orcid.org/http://orcid.org/0000-0001-8875-0612
https://orcid.org/http://orcid.org/0000-0001-5947-1331
https://orcid.org/http://orcid.org/0000-0003-0180-4476
The partial replacement of a conventional limestone filler with sustainable perlite microspheres was investigated in the present study, by examining its effect on rheology, physical characteristics, mechanical properties and durability of Self-Compacting Concrete (SCC). Expanded perlite microspheres (EP) were produced after thermal treatment of the ultra-fine content of Residual of Perlite Mining (RoM), using an innovative technology of vertical electric furnace and achieving the desired expansion by precisely adjusting the heating temperature and the heating time. Its high sphericity in conjunction with low open porosity system compared to conventional expanded perlite powder, can highly contribute to SCC production of excellent rheological behavior without any segregation signs, even by significantly increasing the water content. In addition to the above and unlike the traditional fine filler materials, the EP incorporation results in chemical admixture reduction which in turns leads to concrete compositions of lower cost and higher sustainability indices. The results after a series of tests regarding physical characteristics, mechanical properties and durability, indicated the beneficial role of perlite microspheres. Among others, special mention should be made of the EP addition positive effect on the late compressive strength development, drying shrinkage, freeze & thaw and fire resistance of the EP-SCC mixtures.
Rheology, Mechanical Properties and Durability of Self-compacting Concrete Using Sustainable Expanded Perlite Microspheres
https://orcid.org/http://orcid.org/0000-0001-8875-0612
https://orcid.org/http://orcid.org/0000-0001-5947-1331
https://orcid.org/http://orcid.org/0000-0003-0180-4476
The partial replacement of a conventional limestone filler with sustainable perlite microspheres was investigated in the present study, by examining its effect on rheology, physical characteristics, mechanical properties and durability of Self-Compacting Concrete (SCC). Expanded perlite microspheres (EP) were produced after thermal treatment of the ultra-fine content of Residual of Perlite Mining (RoM), using an innovative technology of vertical electric furnace and achieving the desired expansion by precisely adjusting the heating temperature and the heating time. Its high sphericity in conjunction with low open porosity system compared to conventional expanded perlite powder, can highly contribute to SCC production of excellent rheological behavior without any segregation signs, even by significantly increasing the water content. In addition to the above and unlike the traditional fine filler materials, the EP incorporation results in chemical admixture reduction which in turns leads to concrete compositions of lower cost and higher sustainability indices. The results after a series of tests regarding physical characteristics, mechanical properties and durability, indicated the beneficial role of perlite microspheres. Among others, special mention should be made of the EP addition positive effect on the late compressive strength development, drying shrinkage, freeze & thaw and fire resistance of the EP-SCC mixtures.
Rheology, Mechanical Properties and Durability of Self-compacting Concrete Using Sustainable Expanded Perlite Microspheres
https://orcid.org/http://orcid.org/0000-0001-8875-0612
https://orcid.org/http://orcid.org/0000-0001-5947-1331
https://orcid.org/http://orcid.org/0000-0003-0180-4476
The partial replacement of a conventional limestone filler with sustainable perlite microspheres was investigated in the present study, by examining its effect on rheology, physical characteristics, mechanical properties and durability of Self-Compacting Concrete (SCC). Expanded perlite microspheres (EP) were produced after thermal treatment of the ultra-fine content of Residual of Perlite Mining (RoM), using an innovative technology of vertical electric furnace and achieving the desired expansion by precisely adjusting the heating temperature and the heating time. Its high sphericity in conjunction with low open porosity system compared to conventional expanded perlite powder, can highly contribute to SCC production of excellent rheological behavior without any segregation signs, even by significantly increasing the water content. In addition to the above and unlike the traditional fine filler materials, the EP incorporation results in chemical admixture reduction which in turns leads to concrete compositions of lower cost and higher sustainability indices. The results after a series of tests regarding physical characteristics, mechanical properties and durability, indicated the beneficial role of perlite microspheres. Among others, special mention should be made of the EP addition positive effect on the late compressive strength development, drying shrinkage, freeze & thaw and fire resistance of the EP-SCC mixtures.
Rheology, Mechanical Properties and Durability of Self-compacting Concrete Using Sustainable Expanded Perlite Microspheres
RILEM Bookseries
Jędrzejewska, Agnieszka (editor) / Kanavaris, Fragkoulis (editor) / Azenha, Miguel (editor) / Benboudjema, Farid (editor) / Schlicke, Dirk (editor) / Kounadis, Andreas (author) / Badogiannis, Efstratios (author) / Angelopoulos, Panagiotis (author) / Petrakis, Dimitrios (author) / Tsiaras, Vasilios-Orfeas (author)
International RILEM Conference on Synergising expertise towards sustainability and robustness of CBMs and concrete structures ; 2023 ; Milos Island, Greece
2023-06-09
12 pages
Article/Chapter (Book)
Electronic Resource
English
Durability of Structural Lightweight Concrete Containing Expanded Perlite Aggregate
| Springer Verlag | 2020
Durability of Structural Lightweight Concrete Containing Expanded Perlite Aggregate
| DOAJ | 2020
| British Library Online Contents | 2007