Effect of boron-containing aggregates on setting and hardening of Portland cement mortars
Multicomponent cement-based composites are known as versatile structural materials for enhanced radiation shielding. The use of selected elements, like boron, cadmium, or rare earth elements, provides an increased neutron shielding capacity. Because of profusion, reasonable costs and large cross-sec...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://doi.org/10.1051/matecconf/201816304003 |
| _version_ | 1818914363903311872 |
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| author | Antolik Aneta Glinicki Michał A. Gawlicki Marek |
| author_facet | Antolik Aneta Glinicki Michał A. Gawlicki Marek |
| author_sort | Antolik Aneta |
| collection | DOAJ |
| description | Multicomponent cement-based composites are known as versatile structural materials for enhanced radiation shielding. The use of selected elements, like boron, cadmium, or rare earth elements, provides an increased neutron shielding capacity. Because of profusion, reasonable costs and large cross-section for neutron capture, boron containing minerals are suggested as aggregates for radiation shielding concrete. Despite many advantages, boron additives may act as cement setting retarders. Uncontrolled setting and hardening is not acceptable in radiation shielding concrete technology. In this work we present results from isothermal calorimetry measurements on cement mortars with boron-containing aggregates. Four types of boron aggregates were used in the studies: colemanite, ulexite, borax and boron carbide. Based on calorimetric curves, the beginning of setting time was determined. Additionally early mortar strength was investigated and linear relationship between the heat generated in the isothermal calorimeter and the early compressive strength has been observed. The use of isothermal calorimetry allowed us to estimate the limits for the content of boron compounds to be used cement mortar. |
| first_indexed | 2024-12-19T23:45:12Z |
| format | Article |
| id | doaj.art-32f2929ba7164b62be8e4b9c085c3daf |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-19T23:45:12Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-32f2929ba7164b62be8e4b9c085c3daf2022-12-21T20:01:19ZengEDP SciencesMATEC Web of Conferences2261-236X2018-01-011630400310.1051/matecconf/201816304003matecconf_matbud2018_04003Effect of boron-containing aggregates on setting and hardening of Portland cement mortarsAntolik AnetaGlinicki Michał A.Gawlicki MarekMulticomponent cement-based composites are known as versatile structural materials for enhanced radiation shielding. The use of selected elements, like boron, cadmium, or rare earth elements, provides an increased neutron shielding capacity. Because of profusion, reasonable costs and large cross-section for neutron capture, boron containing minerals are suggested as aggregates for radiation shielding concrete. Despite many advantages, boron additives may act as cement setting retarders. Uncontrolled setting and hardening is not acceptable in radiation shielding concrete technology. In this work we present results from isothermal calorimetry measurements on cement mortars with boron-containing aggregates. Four types of boron aggregates were used in the studies: colemanite, ulexite, borax and boron carbide. Based on calorimetric curves, the beginning of setting time was determined. Additionally early mortar strength was investigated and linear relationship between the heat generated in the isothermal calorimeter and the early compressive strength has been observed. The use of isothermal calorimetry allowed us to estimate the limits for the content of boron compounds to be used cement mortar.https://doi.org/10.1051/matecconf/201816304003 |
| spellingShingle | Antolik Aneta Glinicki Michał A. Gawlicki Marek Effect of boron-containing aggregates on setting and hardening of Portland cement mortars MATEC Web of Conferences |
| title | Effect of boron-containing aggregates on setting and hardening of Portland cement mortars |
| title_full | Effect of boron-containing aggregates on setting and hardening of Portland cement mortars |
| title_fullStr | Effect of boron-containing aggregates on setting and hardening of Portland cement mortars |
| title_full_unstemmed | Effect of boron-containing aggregates on setting and hardening of Portland cement mortars |
| title_short | Effect of boron-containing aggregates on setting and hardening of Portland cement mortars |
| title_sort | effect of boron containing aggregates on setting and hardening of portland cement mortars |
| url | https://doi.org/10.1051/matecconf/201816304003 |
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