Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic Aggregate
The subjects of this study were mortars with varying amounts of recycled ceramic aggregate (RCA). As part of the fine aggregate, the RCA volume share is 10%, 20%, 30%, 50% and 100%. First, fresh mixture parameters were evaluated, such as consistency and air content measurement by pressure method. Ne...
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MDPI AG
2021-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/24/7852 |
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| author | Agata Stolarska Teresa Rucińska |
| author_facet | Agata Stolarska Teresa Rucińska |
| author_sort | Agata Stolarska |
| collection | DOAJ |
| description | The subjects of this study were mortars with varying amounts of recycled ceramic aggregate (RCA). As part of the fine aggregate, the RCA volume share is 10%, 20%, 30%, 50% and 100%. First, fresh mixture parameters were evaluated, such as consistency and air content measurement by pressure method. Next, specimens were molded for compressive strength and flexural strength tests after 7, 28 and 56 days of curing. The thermo-humidity parameters of the composites, i.e., coefficient of capillary action and thermal conductivity coefficient were also investigated using nonstationary method. Sorption kinetics of the mortars at different moisture conditions at 20 °C were also evaluated. Sorption tests were carried out using two methods: TM and DVS. The sorption isotherms were plotted on the basis of equilibrium moisture content for the materials tested. The isotherms obtained by the two methods were evaluated. The results allowed us to draw conclusions on the physical and mechanical parameters of the composites with different amounts of RCA and to evaluate the ability to absorb moisture from the environment by these types of materials. A clear decrease in the compressive strength after 28 days of curing compared to the reference mortar was recorded after using 30% to 100% of RCA (approx. 26% to approx. 39%). Changes in flexural strength were significantly smaller, reaching no more than approx. 7.5%. It was shown that the amount of RCA translates into the ability to sorb moisture, which may affect the application of this type of composites. The amount of RCA translates also into the thermal conductivity coefficient, which decreased with increasing amount of RCA. |
| first_indexed | 2024-03-10T03:39:16Z |
| format | Article |
| id | doaj.art-9ea51891acd84c71996185fe62c5e10a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:39:16Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-9ea51891acd84c71996185fe62c5e10a2023-11-23T09:23:57ZengMDPI AGMaterials1996-19442021-12-011424785210.3390/ma14247852Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic AggregateAgata Stolarska0Teresa Rucińska1Faculty of Civil and Environmental Engineering, Department of Building Physics and Building Materials, West Pomeranian University of Technology in Szczecin, al. Piastów 50A, 70-311 Szczecin, PolandFaculty of Civil and Environmental Engineering, Department of Building Physics and Building Materials, West Pomeranian University of Technology in Szczecin, al. Piastów 50A, 70-311 Szczecin, PolandThe subjects of this study were mortars with varying amounts of recycled ceramic aggregate (RCA). As part of the fine aggregate, the RCA volume share is 10%, 20%, 30%, 50% and 100%. First, fresh mixture parameters were evaluated, such as consistency and air content measurement by pressure method. Next, specimens were molded for compressive strength and flexural strength tests after 7, 28 and 56 days of curing. The thermo-humidity parameters of the composites, i.e., coefficient of capillary action and thermal conductivity coefficient were also investigated using nonstationary method. Sorption kinetics of the mortars at different moisture conditions at 20 °C were also evaluated. Sorption tests were carried out using two methods: TM and DVS. The sorption isotherms were plotted on the basis of equilibrium moisture content for the materials tested. The isotherms obtained by the two methods were evaluated. The results allowed us to draw conclusions on the physical and mechanical parameters of the composites with different amounts of RCA and to evaluate the ability to absorb moisture from the environment by these types of materials. A clear decrease in the compressive strength after 28 days of curing compared to the reference mortar was recorded after using 30% to 100% of RCA (approx. 26% to approx. 39%). Changes in flexural strength were significantly smaller, reaching no more than approx. 7.5%. It was shown that the amount of RCA translates into the ability to sorb moisture, which may affect the application of this type of composites. The amount of RCA translates also into the thermal conductivity coefficient, which decreased with increasing amount of RCA.https://www.mdpi.com/1996-1944/14/24/7852sorptionsorption isothermcement mortarrecyclingrecycled ceramic waste |
| spellingShingle | Agata Stolarska Teresa Rucińska Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic Aggregate Materials sorption sorption isotherm cement mortar recycling recycled ceramic waste |
| title | Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic Aggregate |
| title_full | Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic Aggregate |
| title_fullStr | Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic Aggregate |
| title_full_unstemmed | Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic Aggregate |
| title_short | Evaluation of Physical Characteristics and Sorption of Cement Mortars with Recycled Ceramic Aggregate |
| title_sort | evaluation of physical characteristics and sorption of cement mortars with recycled ceramic aggregate |
| topic | sorption sorption isotherm cement mortar recycling recycled ceramic waste |
| url | https://www.mdpi.com/1996-1944/14/24/7852 |
| work_keys_str_mv | AT agatastolarska evaluationofphysicalcharacteristicsandsorptionofcementmortarswithrecycledceramicaggregate AT teresarucinska evaluationofphysicalcharacteristicsandsorptionofcementmortarswithrecycledceramicaggregate |