Properties of recycled concrete aggregate under different curing conditions
Construction and demolition wastes are produced every day around the world. Thus the idea of using recycled concrete aggregate in new concrete production appears to be an effective utilization of concrete waste. This paper presents the results of an experimental study to evaluate the effects of recy...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2017-12-01
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| Series: | HBRC Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1687404815000553 |
| _version_ | 1819260597595799552 |
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| author | Ahmed Shaban Abdel-Hay |
| author_facet | Ahmed Shaban Abdel-Hay |
| author_sort | Ahmed Shaban Abdel-Hay |
| collection | DOAJ |
| description | Construction and demolition wastes are produced every day around the world. Thus the idea of using recycled concrete aggregate in new concrete production appears to be an effective utilization of concrete waste. This paper presents the results of an experimental study to evaluate the effects of recycled concrete aggregate (RCA) percentages under different curing conditions. The percentages of recycled coarse aggregate to dolomite were (0:100%, 25:75%, 50:50%, 100:0%) respectively. The concrete properties which were studied were the mechanical properties (compressive and splitting strength) and mass transport properties (ISAT and sorptivity). The concrete specimens were exposed to three different curing conditions, moist (standard), open-air, and painted specimens using the substance (Curassol 1). The coarse recycled concrete aggregates were obtained by crushing a laboratory produced primary concrete at age of 28 days. The results showed that curing using paint material was the most efficient method of curing at all ages and percentages of recycling except at 100% recycling, where the maximum value of both compressive and tensile strengths was obtained using water curing. Also, in moist curing, full replacement of coarse aggregates gave the highest compressive strength at age of 28 days. In all cases of recycled aggregate ratios, curing using water caused a decrease in the concrete permeability. |
| first_indexed | 2024-12-23T19:28:26Z |
| format | Article |
| id | doaj.art-854b7622c6b94691bcf553d22fc431f6 |
| institution | Directory Open Access Journal |
| issn | 1687-4048 |
| language | English |
| last_indexed | 2024-12-23T19:28:26Z |
| publishDate | 2017-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | HBRC Journal |
| spelling | doaj.art-854b7622c6b94691bcf553d22fc431f62022-12-21T17:33:59ZengTaylor & Francis GroupHBRC Journal1687-40482017-12-0113327127610.1016/j.hbrcj.2015.07.001Properties of recycled concrete aggregate under different curing conditionsAhmed Shaban Abdel-HayConstruction and demolition wastes are produced every day around the world. Thus the idea of using recycled concrete aggregate in new concrete production appears to be an effective utilization of concrete waste. This paper presents the results of an experimental study to evaluate the effects of recycled concrete aggregate (RCA) percentages under different curing conditions. The percentages of recycled coarse aggregate to dolomite were (0:100%, 25:75%, 50:50%, 100:0%) respectively. The concrete properties which were studied were the mechanical properties (compressive and splitting strength) and mass transport properties (ISAT and sorptivity). The concrete specimens were exposed to three different curing conditions, moist (standard), open-air, and painted specimens using the substance (Curassol 1). The coarse recycled concrete aggregates were obtained by crushing a laboratory produced primary concrete at age of 28 days. The results showed that curing using paint material was the most efficient method of curing at all ages and percentages of recycling except at 100% recycling, where the maximum value of both compressive and tensile strengths was obtained using water curing. Also, in moist curing, full replacement of coarse aggregates gave the highest compressive strength at age of 28 days. In all cases of recycled aggregate ratios, curing using water caused a decrease in the concrete permeability.http://www.sciencedirect.com/science/article/pii/S1687404815000553ConcreteRecyclingCuringRecycled aggregate |
| spellingShingle | Ahmed Shaban Abdel-Hay Properties of recycled concrete aggregate under different curing conditions HBRC Journal Concrete Recycling Curing Recycled aggregate |
| title | Properties of recycled concrete aggregate under different curing conditions |
| title_full | Properties of recycled concrete aggregate under different curing conditions |
| title_fullStr | Properties of recycled concrete aggregate under different curing conditions |
| title_full_unstemmed | Properties of recycled concrete aggregate under different curing conditions |
| title_short | Properties of recycled concrete aggregate under different curing conditions |
| title_sort | properties of recycled concrete aggregate under different curing conditions |
| topic | Concrete Recycling Curing Recycled aggregate |
| url | http://www.sciencedirect.com/science/article/pii/S1687404815000553 |
| work_keys_str_mv | AT ahmedshabanabdelhay propertiesofrecycledconcreteaggregateunderdifferentcuringconditions |