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Sustainable self compacting acid and sulphate resistance RAC by two stage mixing approaches

  • Received : 2018.07.21
  • Accepted : 2019.10.15
  • Published : 2020.01.25

Abstract

In this research article, acid resistance, sulphate resistance and sorptivity of self compacted concrete (SCC) prepared from C&D waste have been discussed. To improve the above properties of self compacted recycled aggregate concrete (SCRAC) along with mechanical and durability properties, different two stage mixing approaches (TSMA and TSMAsfc) were followed. In the proposed two stage mixing approach (TSMAsfc), silica fume, a proportional amount of cement and a proportional amount of water were mixed in premix stage which fills the pores and cracks of recycled aggregate concrete (RAC). The concrete specimen prepared using above mixing approaches were immersed in 1% concentration of sulphuric acid (H2SO4) and magnesium sulphate (MgSO4) solution for 28, 90 and 180 days for evaluating the acid resistance of SCRAC. Experimental results concluded that the proposed two stage mixing approach (TSMAsfc) is most suitable for acid resistance and sulphate resistance in terms of weight loss and strength loss due to the elimination of pores and cracks in the interfacial transition zone (ITZ). In modified two stage mixing approach, the pores and cracks of recycled concrete aggregate (RCA) were filled up and make ITZs of SCRAC stronger. Microstructure analysis was carried out to justify the reason of improvement of ITZs by electron probe micro analyser (EPMA) analysis. X-ray mapping was also done to know the presence of strength contributing elements presents in the concrete sample. It was established that SCRAC with modified mixing approach have shown improved results in terms of acid resistance, sulphate resistance, sorptivity and mechanical properties.

Keywords

References

  1. Acharya, P.K. and Patro, S.K. (2016), "Acid resistance, sulphate resistance and strength properties of concrete containing ferrochrome ash (FA) and lime", Constr. Build. Mater., 120, 241-250. https://doi.org/10.1016/j.conbuildmat.2016.05.099.
  2. Al-Salami, A.E. and Salem, A. (2010), "Effects of mix composition on the sulfate resistance of blended cements", Int. J. Civil Environ. Eng., 10(6), 43-47.
  3. Aslani, F., Ma, G., Wan, D.L.Y. and Muselin, G. (2018), "Development of high-performance self-compacting concrete using waste recycled concrete aggregates and rubber granules", J. Clean. Prod., 182, 553-566. https://doi.org/10.1016/j.jclepro.2018.02.074.
  4. ASTM C1585-11, Standard Test Method for Measurement of Absorption of Water by Hydraulic Cement Paste, American Society for Testing and Materials International, West Conshohocken.
  5. Aydin, S., Yigiter, H. and Baradan, B. (2007), "Sulfuric acid resistance of high-volume fly ash concrete", Build. Environ., 42(2), 717-721. https://doi.org/10.1016/j.buildenv.2005.10.024.
  6. Bellmann, F., Moser, B. and Stark, J. (2006), "Influence of sulfate solution concentration on the formation of gypsum in sulfate resistance test specimen", Cement Concrete Res., 36(2), 358-363. https://doi.org/10.1016/j.cemconres.2005.04.006.
  7. Boudali, S., Kerdal, D.E., Ayed, K., Abdulsalam, B. and Soliman, A.M. (2016), "Performance of self-compacting concrete incorporating recycled concrete fines and aggregate exposed to sulphate attack", Constr. Build. Mater., 124, 705-713. https://doi.org/10.1016/j.conbuildmat.2016.06.058.
  8. Bulatovic, V., Melesev, M., Radeka, M., Radonjanin, V. and Lukic, I. (2017), "Evaluation of sulfate resistance of concrete with recycled and natural aggregates", Constr. Build. Mater., 152, 614-631. https://doi.org/10.1016/j.conbuildmat.2017.06.161.
  9. Chindaprasirt, P., Homwuttiwong, S. and Sirivivatnanon, V. (2004), "Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar", Cement Concrete Res., 34(7), 1087-1092. https://doi.org/10.1016/j.cemconres.2003.11.021.
  10. Choi, H., Choi, H., Lim, M., Inoue, M., Kitagaki, R. and Noguchi, T. (2016), "Evaluation on the mechanical performance of low-quality recycled aggregate through interface enhancement between cement matrix and coarse aggregate by surface modification technology", Int. J. Concrete Struct. Mater., 10(1), 87-97. https://doi.org/10.1007/s40069-015-0124-5.
  11. Cohen, M.D. and Mather, B. (1991), "Sulfate attack on concrete: research needs", Mater. J., 88(1), 62-69.
  12. Dehwah, H.A.F. (2007), "Effect of sulfate concentration and associated cation type on concrete deterioration and morphological changes in cement hydrates", Constr. Build. Mater., 21(1), 29-39. https://doi.org/10.1016/j.conbuildmat.2005.07.010.
  13. Dinakar, P., Babu, K.G. and Santhanam, M. (2008), "Durability properties of high volume fly ash self compacting concretes", Cement Concrete Compos., 30(10), 880-886. https://doi.org/10.1016/j.cemconcomp.2008.06.011.
  14. Dinakar, P., Reddy, M.K. and Sharma, M. (2013), "Behaviour of self compacting concrete using Portland pozzolana cement with different levels of fly ash", Mater. Des., 46, 609-616. https://doi.org/10.1016/j.matdes.2012.11.015.
  15. EFNARC (2002), Specification and Guidelines for Self Compacting Concrete, European Association for Producers and Applicators of Specialist Building Products, EFNARC.
  16. El-Alfi, E.A., Radwan, A.M. and Abed El-Aleem, S. (2004), "Effect of limestone fillers and silica fume pozzolana on the characteristics of sulfate resistant cement pastes", Ceram. Silikaty, 48(1), 29-33.
  17. El Gamal, M.M., El-Dieb, A.S., Mohamed, A.M.O. and El Sawy, K.M. (2017), "Performance of modified sulfur concrete exposed to actual sewerage environment with variable temperature, humidity and gases", J. Build. Eng., 11, 1-8. https://doi.org/10.1016/j.jobe.2017.03.009.
  18. Elhakam, A.A., Mohamed, A.E. and Awad, E. (2012), "Influence of self-healing, mixing method and adding silica fume on mechanical properties of recycled aggregates concrete", Constr. Build. Mater., 35, 421-427. https://doi.org/10.1016/j.conbuildmat.2012.04.013.
  19. Freidin, C. (1999), "Behaviour of silica-concrete based on quartz bond in sulphuric acid", Cement Concrete Compos., 21(4), 317-323. https://doi.org/10.1016/S0958-9465(99)00014-1.
  20. IS 2386 (Part IV) (1963), Indian Standard Code of Practice for Methods of Test for Aggregates for Concrete, Bureau of Indian Standards, New Delhi.
  21. IS 383 (1970), Indian Standard Code of Practice for Coarse and Fine Aggregates from Naturals Sources for Concrete, Bureau of Indian Standards, New Delhi.
  22. IS 8112 (1989), Indian Standard Code of Practice for Ordinary Portland Cement 43 Grade, Bureau of Indian Standards, New Delhi.
  23. IS 9103 (1999), Specification for Concrete Admixtures, Bureau of Indian Standards, New Delhi.
  24. Kapoor, K., Singh, S.P. and Singh, B. (2016), "Durability of self-compacting concrete made with recycled concrete aggregates and mineral admixtures", Constr. Build. Mater., 128, 67-76. https://doi.org/10.1016/j.conbuildmat.2016.10.026.
  25. Karakurt, C. and Topcu, I.B. (2011), "Effect of blended cements produced with natural zeolite and industrial by-products on alkali-silica reaction and sulfate resistance of concrete", Constr. Build. Mater., 25(4), 1789-1795. https://doi.org/10.1016/j.conbuildmat.2010.11.087.
  26. Kisku, N., Joshi, H., Ansari, M., Panda, S.K., Nayak, S. and Dutta, S.C. (2017), "A critical review and assessment for usage of recycled aggregate as sustainable construction material", Constr. Build. Mater., 131, 721-740. https://doi.org/10.1016/j.conbuildmat.2016.11.029.
  27. Kjellsen, K.O., Monsoy, A., Isachsen, K. and Detwiler, R.J., (2003), "Preparation of flat-polished specimens for SEM-backscattered electron imaging and X-ray microanalysis-importance of epoxy impregnation", Cement Concrete Res., 33(4), 611-616. https://doi.org/10.1016/S0008-8846(02)01029-3.
  28. Li, J., Xiao, H. and Zhou, Y. (2009), "Influence of coating recycled aggregate surface with pozzolanic powder on properties of recycled aggregate concrete", Constr. Build. Mater., 23(3), 1287-1291. https://doi.org/10.1016/j.conbuildmat.2008.07.019.
  29. Liang, Y.C., Ye, Z.M., Vernerey, F. and Xi, Y. (2013), "Development of processing methods to improve strength of concrete with 100% recycled coarse aggregate", J. Mater. Civil Eng., 27(5), 04014163. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000909.
  30. Limbachiya, M., Meddah, M.S. and Ouchagour, Y. (2012), "Use of recycled concrete aggregate in fly-ash concrete", Constr. Build. Mater., 27(1), 439-449. https://doi.org/10.1016/j.conbuildmat.2011.07.023.
  31. Mehta, A. and Siddique, R. (2017), "Sulfuric acid resistance of fly ash based geopolymer concrete", Constr. Build. Mater., 146, 136-143. https://doi.org/10.1016/j.conbuildmat.2017.04.077.
  32. Meyer, A.H. and Ledbetter, W.B. (1970), "Sulfuric acid attack on concrete sewer pipe", J. Sanit. Eng. Div., 96(5), 1167-1182. https://doi.org/10.1061/JSEDAI.0001176
  33. Mukharjee, B.B. and Barai, S.V. (2015), "Characteristics of sustainable concrete incorporating recycled coarse aggregates and colloidal nano-silica", Adv. Concrete Constr., 3(3), 187-202. http://dx.doi.org/10.12989/acc.2015.3.3.187.
  34. Rajhans, P., Panda, S.K. and Nayak, S. (2018a), "Sustainable self compacting concrete from C&D waste by improving the microstructures of concrete ITZ", Constr. Build. Mater., 163, 557-570. https://doi.org/10.1016/j.conbuildmat.2017.12.132.
  35. Rajhans, P., Panda, S.K. and Nayak, S. (2018b), "Sustainability on durability of self compacting concrete from C&D waste by improving porosity and hydrated compounds: A microstructural investigation", Constr. Build. Mater., 174, 559-575. https://doi.org/10.1016/j.conbuildmat.2018.04.137.
  36. Roy, D.M., Arjunan, P. and Silsbee, M.R. (2001), "Effect of silica fume, metakaolin, and low-calcium fly ash on chemical resistance of concrete", Cement Concrete Res., 31(12), 1809-1813. https://doi.org/10.1016/S0008-8846(01)00548-8.
  37. Saha, S. and Rajasekaran, C. (2016), "Mechanical properties of recycled aggregate concrete produced with portland pozzolana cement", Adv. Concrete Constr., 4(1), 027-035. https://doi.org/10.12989/acc.2016.4.1.027.
  38. Sahmaran, M., Kasap, O., Duru, K. and Yaman, I.O. (2007), "Effects of mix composition and water-cement ratio on the sulfate resistance of blended cements", Cement Concrete Compos., 29(3), 159-167. https://doi.org/10.1016/j.cemconcomp.2006.11.007.
  39. Sahu, S., Badger, S., Thaulow, N. and Lee, R.J. (2004), "Determination of water-cement ratio of hardened concrete by scanning electron microscopy", Cement Concrete Compos., 26(8), 987-992. https://doi.org/10.1016/j.cemconcomp.2004.02.032.
  40. Santhanam, M., Cohen, M. and Olek, J. (2006), "Differentiating seawater and groundwater sulfate attack in Portland cement mortars", Cement Concrete Res., 36(12), 2132-2137. https://doi.org/10.1016/j.cemconres.2006.09.011.
  41. Santhanam, M., Cohen, M.D. and Olek, J. (2002), "Mechanism of sulfate attack: a fresh look: part 1: summary of experimental results", Cement Concrete Res., 32(6), 915-921. https://doi.org/10.1016/S0008-8846(02)00724-X.
  42. Siddique, R. and Khan, M.I. (2011), Supplementary Cementing Materials, Springer Science & Business Media.
  43. Su, N., Hsu, K.C. and Chai, H.W. (2001), "A simple mix design method for self-compacting concrete", Cement Concrete Res., 31(12), 1799-1807. https://doi.org/10.1016/S0008-8846(01)00566-X.
  44. Tam, V. W. and Tam, C. M. (2008), "Diversifying two-stage mixing approach (TSMA) for recycled aggregate concrete: TSMAs and TSMAsc", Constr. Build. Mater., 22(10), 2068-2077. https://doi.org/10.1016/j.conbuildmat.2007.07.024.
  45. Tam, V.W., Gao, X.F. and Tam, C.M. (2005), "Microstructural analysis of recycled aggregate concrete produced from two-stage mixing approach", Cement Concrete Res., 35(6), 1195-1203. https://doi.org/10.1016/j.cemconres.2004.10.025.
  46. Torii, K. and Kawamura, M. (1994), "Effects of fly ash and silica fume on the resistance of mortar to sulfuric acid and sulfate attack", Cement Concrete Res., 24(2), 361-370. https://doi.org/10.1016/0008-8846(94)90063-9.
  47. Verma, S.K. and Ashish, D.K. (2017), "Mechanical behavior of concrete comprising successively recycled concrete aggregates", Adv. Concrete Constr., 5(4), 303-311. https://doi.org/10.12989/acc.2017.5.4.303.
  48. Wang, D., Zhou, X., Meng, Y. and Chen, Z. (2017), "Durability of concrete containing fly ash and silica fume against combined freezing-thawing and sulfate attack", Constr. Build. Mater., 147, 398-406. https://doi.org/10.1016/j.conbuildmat.2017.04.172.
  49. Wijayasundara, M., Mendis, P. and Crawford, R.H. (2018), "Integrated assessment of the use of recycled concrete aggregate replacing natural aggregate in structural concrete", J. Clean. Prod., 174, 591-604. https://doi.org/10.1016/j.jclepro.2017.10.301.
  50. Yaragal, S.C. and Roshan, M.A. (2017), "Usage potential of recycled aggregates in mortar and concrete", Adv. Concrete Constr., 5(3), 201-219. https://doi.org/10.12989/acc.2017.5.3.201.
  51. Yaragal, S.C., Teja, D.C. and Shaffi, M. (2016), "Performance studies on concrete with recycled coarse aggregates" Adv. Concrete Constr., 4(4), 263-281. https://doi.org/10.12989/acc.2016.4.4.263.