Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concrete
This research was developed to use recycled coarse aggregate (RCA) and recycled crushed glass (RCG) to produce self-compacting concrete (SCC) mixtures. Natural coarse aggregate (NCA) was replaced by RCA from 0% to 100%, and natural fine aggregate (NFA) was replaced by RCG from 0% to 20%. Slump flow...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221450952300712X |
| _version_ | 1797454532822695936 |
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| author | Subhan Ahmad Swapnil Upadhyay Arshad Umar Mohammed A. Al-Osta |
| author_facet | Subhan Ahmad Swapnil Upadhyay Arshad Umar Mohammed A. Al-Osta |
| author_sort | Subhan Ahmad |
| collection | DOAJ |
| description | This research was developed to use recycled coarse aggregate (RCA) and recycled crushed glass (RCG) to produce self-compacting concrete (SCC) mixtures. Natural coarse aggregate (NCA) was replaced by RCA from 0% to 100%, and natural fine aggregate (NFA) was replaced by RCG from 0% to 20%. Slump flow with T500 time, L-box, and V-funnel tests were done to ascertain the workability properties of SCC mixtures. The mechanical properties studied were compressive, flexural, and splitting tensile strength at 28 and 56 days. Ultrasonic pulse velocities (UPV) were also measured for the SCC mixtures at 28 and 56 days. Ten shear-critical beams with different shear span-to-depth (a/d) ratios were also cast and tested under 4-point bending. Cracking load, failure load, load-midspan deflection curves, and deflection corresponding to ultimate load were observed. The recommendations of the American Concrete Institute (ACI 318–14 and ACI 318–19), Eurocode (EC2), and Japanese Society of Civil Engineers (JSCE) for shear design were also evaluated on a database of 222 beams cast with SCC and recycled aggregate concrete (RAC) along with the beams tested in the presented study. Results indicate that the workability and mechanical properties were reduced when the replacement level of RCA was increased. The use of RCG as a replacement for NFA enhanced the workability properties and mechanical properties at the age of 56 days. The replacement of NCA with RCA slightly reduced the shear capacity and stiffness of the RC beams. However, the shear capacity and stiffness of RC beams improved when NFA was replaced with RCG. The design provisions of ACI 318–19 yielded accurate estimates of shear capacity compared to JCSE, EC 2, and ACI 318–14. |
| first_indexed | 2024-03-09T15:39:33Z |
| format | Article |
| id | doaj.art-07bb6de96f0c4dff9d85b278fd3f7a84 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:39:33Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-07bb6de96f0c4dff9d85b278fd3f7a842023-11-25T04:49:10ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02532Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concreteSubhan Ahmad0Swapnil Upadhyay1Arshad Umar2Mohammed A. Al-Osta3IRC for Construction and Building Materials, KFUPM, Dhahran 31261, Saudi Arabia; Corresponding author.Department of Civil Engineering, Aligarh Muslim University, Aligarh 202002, IndiaDepartment of Civil Engineering, Aligarh Muslim University, Aligarh 202002, IndiaIRC for Construction and Building Materials, KFUPM, Dhahran 31261, Saudi Arabia; Department of Civil and Environmental Engineering, KFUPM, Dhahran 31261, Saudi ArabiaThis research was developed to use recycled coarse aggregate (RCA) and recycled crushed glass (RCG) to produce self-compacting concrete (SCC) mixtures. Natural coarse aggregate (NCA) was replaced by RCA from 0% to 100%, and natural fine aggregate (NFA) was replaced by RCG from 0% to 20%. Slump flow with T500 time, L-box, and V-funnel tests were done to ascertain the workability properties of SCC mixtures. The mechanical properties studied were compressive, flexural, and splitting tensile strength at 28 and 56 days. Ultrasonic pulse velocities (UPV) were also measured for the SCC mixtures at 28 and 56 days. Ten shear-critical beams with different shear span-to-depth (a/d) ratios were also cast and tested under 4-point bending. Cracking load, failure load, load-midspan deflection curves, and deflection corresponding to ultimate load were observed. The recommendations of the American Concrete Institute (ACI 318–14 and ACI 318–19), Eurocode (EC2), and Japanese Society of Civil Engineers (JSCE) for shear design were also evaluated on a database of 222 beams cast with SCC and recycled aggregate concrete (RAC) along with the beams tested in the presented study. Results indicate that the workability and mechanical properties were reduced when the replacement level of RCA was increased. The use of RCG as a replacement for NFA enhanced the workability properties and mechanical properties at the age of 56 days. The replacement of NCA with RCA slightly reduced the shear capacity and stiffness of the RC beams. However, the shear capacity and stiffness of RC beams improved when NFA was replaced with RCG. The design provisions of ACI 318–19 yielded accurate estimates of shear capacity compared to JCSE, EC 2, and ACI 318–14.http://www.sciencedirect.com/science/article/pii/S221450952300712XSelf-compacting concreteRecycled coarse aggregateRecycled crushed glassMechanical propertiesShear capacityDeflection |
| spellingShingle | Subhan Ahmad Swapnil Upadhyay Arshad Umar Mohammed A. Al-Osta Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concrete Case Studies in Construction Materials Self-compacting concrete Recycled coarse aggregate Recycled crushed glass Mechanical properties Shear capacity Deflection |
| title | Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concrete |
| title_full | Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concrete |
| title_fullStr | Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concrete |
| title_full_unstemmed | Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concrete |
| title_short | Effect of recycled crushed glass and recycled coarse aggregate on the properties of self-compacting concrete |
| title_sort | effect of recycled crushed glass and recycled coarse aggregate on the properties of self compacting concrete |
| topic | Self-compacting concrete Recycled coarse aggregate Recycled crushed glass Mechanical properties Shear capacity Deflection |
| url | http://www.sciencedirect.com/science/article/pii/S221450952300712X |
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