Advances in concrete construction

  • 제12권3호
  • /
  • Pages.207-216
  • /
  • 2021
  • /
  • 2287-5301(pISSN)
  • /
  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Foam concrete made with micro and nano silica sand: Pore structure and properties

  • Obaid, Hawaa A. (Department of Civil Engineering, Al-maaref University College) ;
  • Hilal, Ameer A. (Department of Civil Engineering, College of Engineering, University of Anbar)
  • 투고 : 2020.11.21
  • 심사 : 2021.07.15
  • 발행 : 2021.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

A study has been undertaken to investigate the possibility of using filler as fine aggregate, with different fineness and grading, instead of a conventional fine sand used in producing foam concrete. A conventional sand was replaced by micro silica sand and a comparison has been done to examine the pore structure and properties of investigated foam concrete mixes. Two ways were adopted to incorporate the nano silica sand into the mixture: with part of mixing water and with pre-formed foam bubbles. Compared to conventional foam concrete, it was found that using micro silica sand helped in improving strength (169%), reducing absorbed water (38%) and reducing shrinkage (40%) by enhancing both cement paste microstructure and pore structure. This pore structure enhancement was achieved by reducing pores merging leading to making a narrow pore size distribution and more circular pores with large spaces between them. On the other hand, increasing fineness of normal sand and using nano silica sand resulted in less enhancing in foam concrete properties compared with using the silica sand as its own (at micro level). It was noticed that incorporating the nano particles into mixture with foam bubbles was more effective than the conventional way; with mixing water.

키워드

참고문헌

  1. Aggarwal, P., Singh, R.P. and Aggarwal, Y. (2015), "Use of nanosilica in cement based materials-A review", Cogent Eng., 2(1), 1078018. https://doi.org/10.1080/23311916.2015.1078018.
  2. ASTM C513 (2005), Standard Test Method for Obtaining and Testing Specimens of Hardened Lightweight Insulating Concrete for Compressive Strength.
  3. Awang, H., Aljoumaily, Z.S., Noordin, N. and Al-Mulali, M.Z. (2014), "The mechanical properties of foamed concrete containing un-processed blast furnace slag", MATEC Web Conf., 15, 01034. https://doi.org/10.1051/matecconf/20141501034.
  4. Chaudhary, J.L., Harison, A. and Srivastava, V. (2015), "Use of silica sand as cement replacement in ppc concrete", Int. J. Res. Eng. Tech. (IJRET), 4(11), 55-58. https://doi.org/10.15623/ijret.2015.0411010
  5. Chindaprasirt, P. and Rattanasak, U. (2011), "Shrinkage behavior of structural foam lightweight concrete containing glycol compounds and fly ash", Mater. Des., 32(2), 723-727. https://doi.org/10.1016/j.matdes.2010.07.036.
  6. Gokce, H.S., Hatungimana, D. and Ramyar, K. (2019), "Effect of fly ash and silica fume on hardened properties of foam concrete", Constr. Build. Mater., 194, 1-11. https://doi.org/10.1016/j.conbuildmat.2018.11.036.
  7. Hasehmpour, H., Mohammadi Atashgah, K. and Karbalaei Rezaei, M. (2014), "An investigation into the role of nano-silica in improving strength of lightweight concrete", Eur. Online J. Nat. Soc. Sci., 3(4), 1058-1067.
  8. Hilal, A.A. (2015), "Properties and microstructure of pre-formed foamed concretes", Ph.D. Dissertation, University of Nottingham.
  9. Hilal, A.A., Thom, N.H. and Dawson, A.R. (2015), "On entrained pore size distribution of foamed concrete", Constr. Build. Mater., 75, 227-233. https://doi.org/10.1016/j.conbuildmat.2014.09.117.
  10. Hilal, A.A., Thom, N.H. and Dawson, A.R. (2015), "On void structure and strength of foamed concrete made without/with additives", Constr. Build. Mater., 85, 157-164. https://doi.org/10.1016/j.conbuildmat.2015.03.093.
  11. Jignesh, K. and Vaniya, S.R. (2015), "Effect of use of silica sand as fine material in concrete", Micron, 332(694), 40-70.
  12. Jing, Z. and Liu X. (2014), "Effect of nano-silica on the properties and form mechanism of foamed concrete", Biotech. Indian J., 10(24), 15583-15589.
  13. Kearsley, E.P. and Wainwright, P.J. (2002), "The effect of porosity on the strength of foamed concrete", Cement Concrete Res., 32(2), 233-239. https://doi.org/10.1016/S0008-8846(01)00665-2.
  14. Kunhanandan Nambiar, E.K. and Ramamurthy, K. (2008), "Fresh state characteristics of foam concrete", J. Mater. Civil Eng., 20(2), 111-117. https://doi.org/10.1061/(ASCE)0899-1561(2008)20:2(111)
  15. Lian, C., Zhuge, Y. and Beecham, S. (2011), "The relationship between porosity and strength for porous concrete", Constr. Build. Mater., 25(11), 4294-4298. https://doi.org/10.1016/j.conbuildmat.2011.05.005.
  16. Lim, S.K., Tan, C.S., Zhao, X. and Ling, T.C. (2015), "Strength and toughness of lightweight foamed concrete with different sand grading", KSCE J. Civil Eng., 19(7), 2191-2197. https://doi.org/10.1007/s12205-014-0097-y.
  17. Murthy, A.R. and Ganesh, P. (2019), "Effect of steel fibres and nano silica on fracture properties of medium strength concrete", Adv. Concrete Constr., 7(3), 143-150. http://doi.org/10.12989/acc.2019.7.3.143.
  18. Mydin, M.O., MdNoordin, N., Said, A.M. and Mohamad, N. (2018), "Preliminary study of low densities lightweight foamed concrete brick for non-load-bearing wall system", J. Mater. Environ. Sci., 9, 1405-1410.
  19. Nambiar, E.K. and Ramamurthy, K. (2007), "Air-void characterisation of foam concrete", Cement Concrete Res., 37(2), 221-230. https://doi.org/10.1016/j.cemconres.2006.10.009.
  20. Nambiar, E.K. and Ramamurthy, K. (2007), "Sorption characteristics of foam concrete", Cement Concrete Res., 37(9), 1341-1347. https://doi.org/10.1016/j.cemconres.2007.05.010.
  21. Nambiar, E.K. and Ramamurthy, K. (2009), "Shrinkage behavior of foam concrete", J. Mater. Civil Eng., 21(11), 631-636. https://doi.org/10.1061/(ASCE)0899-1561(2009)21:11(631)
  22. Narayanan, N. and Ramamurthy, K. (2000), "Structure and properties of aerated concrete: a review", Cement Concrete Compos., 22(5), 321-329. https://doi.org/10.1016/S0958-9465(00)00016-0.
  23. Pachipala, S. (2017), "A study on mechanical properties of concrete using silica sand as partial replacement of cement", Int. J. Civil Eng., 34-39.
  24. Ramamurthy, K., Nambiar, E.K. and Ranjani, G.I.S. (2009), "A classification of studies on properties of foam concrete", Cement Concrete Compos., 31(6), 388-396. https://doi.org/10.1016/j.cemconcomp.2009.04.006.
  25. Roslan, A.F., Awang, H. and Mydin, M.A.O. (2013), "Effects of various additives on drying shrinkage, compressive and flexural strength of lightweight foamed concrete (LFC)", Adv. Mater. Res., 626, 594-604. https://doi.org/10.4028/www.scientific.net/AMR.626.594.
  26. Rosli, M., Rashidi, A., Ahmed, E. and Sarudu, N.H. (2011), "The effect of reinforcement, expanded polystyrene (EPS) and fly ash on the strength of foam concrete", UNIMAS E-J. Civil Eng., 2(2), 1-7.
  27. Saleh, N.J., Ibrahim, R.I. and Salman, A.D. (2015), "Characterization of nano-silica prepared from local silica sand and its application in cement mortar using optimization technique", Adv. Powder Tech. 26(4), 1123-1133. http://doi.org/10.1016/j.apt.2015.05.008.
  28. Senff, L., Labrincha, J.A., Ferreira, V.M., Hotza, D. and Repette, W.L. (2009), "Effect of nano-silica on rheology and fresh properties of cement pastes and mortars", Constr. Build. Mater., 23(7), 2487-2491. http://doi.org/10.1016/j.conbuildmat.2009.02.005.
  29. Van Broekhuizen, P. (2014), "Use of nanomaterials in the european construction industry and some occupational health aspects thereof use of nanomaterials in the european construction industry and some occupational health aspects thereof", J. Nanoparticle Res., 13(2), 447-462. https://doi.org/10.1007/s11051-010-0195-9.
  30. Visagie M., Kearsely E.P. (2002), "Properties of foamed concrete as influenced by air-void parameters", Concrete/Beton, 101, 8-14.
  31. Xingjun, L., Mingli, C., Yan, L., Xin, L., Qian, L., Rong, T. and Yuping, D. (2015), "A new absorbing foam concrete: preparation and microwave absorbing properties", Adv. Concrete Constr., 3(2), 103. http://doi.org/10.12989/acc.2015.3.2.103.
  32. Zolfaghary, S., Jafari, N., Dehestani, M. and Hejazi, M. (2017), "Investigation of adding cement kiln dust (CKD) in ordinary and lightweight concrete", Adv. Concrete Constr., 5(2), 101-115. http://doi.org/10.12989/acc.2017.5.2.101.