Prediksi Kuat Tekan Beton Agregat Recycle Campuran Air Laut dengan Schmidt Rebound Hammer Test
Keywords:recycled aggregate, seawater, compressive strength, SRH
AbstractNowadays, using recyled aggregate and seawater as replacing natural aggregate and freshwater in mixing have been main priority to be a new concrete construction material. However, in order to asses their strength performance in fast and accurate, an appropriate method needs to be determined. Therefore, the aim of this research is to evaluate and predict the compressive strength of recycled aggregate concrete (RAC) mixed seawater using Schmidt rebound hammer test (SRH) and the result value was corresponded to concrete compressive testing machine (CTM) as control test of concrete specimens. Total 72 samples divided into three concrete mixtures were designed and prepared in cylindrical samples with w/c ratio of 0.45 and target compressive strength of 25 MPa. The first mixture was named natural aggregate concrete (NAC) or BAN as control concrete with 100% natural aggregate and fresh water. The second and third mixtures were named BAR-50 and BAR-100 with the BAN replacement of 50% and 100% RAC respectively. Seawater as mixing was performed in mixture concrete of BAR-50 and BAR-100. All sample mixtures were then wet cured at different age of 7, 28, 56 and 90 days in fresh water. The results show a good correlation between SRH and CTM tests with having high correlation of R2=0.9908. Also, a proposed mathematical model, equation 1, is created for quick calculation in predicting compressive strength of RCA. Therefore, the usage of SRH test is a realistic alternative to predict the compressive strength of recycled concrete with different percentage of replacement of NAC and mixing seawater.
F. Xu, â€œLiterature Review of Recycled Concrete Aggregate,â€ Applied Mechanics and Materials, vol. 638â€“640, pp. 1162â€“1165, Sep. 2014, doi: 10.4028/www.scientific.net/AMM.638-640.1162.
V. Corinaldesi, â€œStructural Concrete Prepared with Coarse Recycled Concrete Aggregate: From Investigation to Design,â€ Advances in Civil Engineering, vol. 2011, pp. 1â€“6, 2011, doi: 10.1155/2011/283984.
C. J. Zega and A. A. Di Maio, â€œRecycled Concretes Made with Waste Ready-Mix Concrete as Coarse Aggregate,â€ Journal of Materials in Civil Engineering, vol. 23, no. 3, pp. 281â€“286, Mar. 2011, doi: 10.1061/(ASCE)MT.1943-5533.0000165.
J. HrÅ¯za, J. TopiÄ, L. HlubockÃ½, and T. PlachÃ½, â€œDevelopment of Mechanical Properties of Cement Based Composites with Recycled Concrete Aggregate,â€ Applied Mechanics and Materials, vol. 825, pp. 11â€“14, Feb. 2016, doi: 10.4028/www.scientific.net/AMM.825.11.
W. Bai, W. Li, J. Guan, J. Wang, and C. Yuan, â€œResearch on the Mechanical Properties of Recycled Aggregate Concrete under Uniaxial Compression Based on the Statistical Damage Model,â€ Materials, vol. 13, no. 17, p. 3765, Aug. 2020, doi: 10.3390/ma13173765.
K. McNeil and T. H.-K. Kang, â€œRecycled Concrete Aggregates: A Review,â€ International Journal of Concrete Structures and Materials, vol. 7, no. 1, pp. 61â€“69, Mar. 2013, doi: 10.1007/s40069-013-0032-5.
F. M. Wegian, â€œEffect of seawater for mixing and curing on structural concrete,â€ The IES Journal Part A: Civil & Structural Engineering, vol. 3, no. 4, pp. 235â€“243, Nov. 2010, doi: 10.1080/19373260.2010.521048.
M. Arezoumandi, A. Smith, J. S. Volz, and K. H. Khayat, â€œAn experimental study on flexural strength of reinforced concrete beams with 100% recycled concrete aggregate,â€ Engineering Structures, vol. 88, pp. 154â€“162, Apr. 2015, doi: 10.1016/j.engstruct.2015.01.043.
A. B. Ajdukiewicz and A. T. Kliszczewicz, â€œComparative Tests of Beams and Columns Made of Recycled Aggregate Concrete and Natural Aggregate Concrete,â€ Journal of Advanced Concrete Technology, vol. 5, no. 2, pp. 259â€“273, 2007, doi: 10.3151/jact.5.259.
S. U. Hong, S. H. Kim, and Y. T. Lee, â€œEstimation of Compressive Strength of Recycled Aggregate High Strength Concrete Using Ultrasonic Pulse Velocity,â€ Key Engineering Materials, vol. 605, pp. 147â€“150, Apr. 2014, doi: 10.4028/www.scientific.net/KEM.605.147.
M. MaleÅ¡ev, V. Radonjanin, and G. Bro, â€œPROPERTIES OF RECYCLED AGGREGATE CONCRETE,â€ Contemporary Materials, p. 11, 2014.
J. Xiao, D. Lu, and J. Ying, â€œDurability of Recycled Aggregate Concrete: An Overview,â€ Journal of Advanced Concrete Technology, vol. 11, no. 12, pp. 347â€“359, 2013, doi: 10.3151/jact.11.347.
M. Shariati, N. H. Ramli-Sulong, P. Shafigh, and H. Sinaei, â€œAssessing the strength of reinforced concrete structures through Ultrasonic Pulse Velocity and Schmidt Rebound Hammer tests,â€ Sci. Res. Essays, p. 8.
F. Aydin and M. Saribiyik, â€œCorrelation between Schmidt Hammer and destructive compressions testing for concretes in existing buildings,â€ Sci. Res. Essays, p. 5.
M. Kang and L. Weibin, â€œEffect of the Aggregate Size on Strength Properties of Recycled Aggregate Concrete,â€ Advances in Materials Science and Engineering, vol. 2018, pp. 1â€“8, 2018, doi: 10.1155/2018/2428576.
K. W. Day, Concrete mix design, quality control, and specification, 2nd ed. London ; New York: E & EN Spon, 1999.
T. I. Abdel-Magid, O. M. Osman, O. H. Ibrahim, R. T. Mohammed, S. O. Hassan, and A. A. H. Bakkab, â€œInfluence of Seawater in Strengths of Concrete Mix Design when Used in Mixing and Curing,â€ Key Engineering Materials, vol. 711, pp. 382â€“389, Sep. 2016, doi: 10.4028/www.scientific.net/KEM.711.382.
L. Sulaiman and A. A. Fisu, â€œPENGARUH CAMPURAN AIR LAUT TERHADAP KUAT TEKAN BETON AGREGAT RECYCLE,â€ REKAYASA SIPIL, vol. 14, p. 8, 2020.
P. Alaejos and M. A. BermÃºdez, â€œInfluence of Seawater Curing in Standard and High-Strength Submerged Concrete,â€ Journal of Materials in Civil Engineering, vol. 23, no. 6, pp. 915â€“920, Jun. 2011, doi: 10.1061/(ASCE)MT.1943-5533.0000231.
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