نوع مقاله : مقاله پژوهشی
نویسندگان
دانشگاه بینالمللی امام خمینی (ره)، قزوین، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
One of the major factors which controls the serviceability life of a concrete structure is
its durability. Since the durability is dependent mainly on the permeability, some standards such as BS
EN 12390-8 and DIN 1048-5 are aimed for water permeability assessment of concrete. Based on these
standard test methods, a constant pressure is applied to the concrete surface, perpendicular to casting
direction for a specific period of time. Since the applied water pressure, test duration and the direction
of casting affect the concrete permeability, 150mm concrete cubes with water/cement ratios of 0.4, 0.5
and 0.6 were prepared and at the ages of 7, 28 and 91 days (after water curing) the permeability of the
cubes was investigated, using “Cylindrical chamber” method. The results show that the penetration
depth and volume in the casting direction are lower than the respective values, obtained in the direction,
perpendicular to casting. It was also observed that, regarding the water/cement ratio, the exponent of
the power function used to approximate the relation of penetration depth and volume with pressure,
is approximately constant at a specific age and testing direction. This issue wasn’t observed when
approximating the relation of penetration depth and volume with test duration, using the power function.
A linear relationship between the penetration depth and the penetration volume was also observed.
کلیدواژهها [English]
[1] X. Li, Q. Xu, S. Chen, An experimental and numerical study on water permeability of concrete, Construction and Building Materials, 105 (2016) 503-510.
[2] ACI CT-13, ACI Concrete Terminology, American Concrete Institute, (2013).
[3]Banthia, A. Biparva, S. Mindess, Permeability of concrete under stress, Cement and Concrete Research, 35(9) (2005) 1651-1655.
[4] Dashtibadfarid, M. Afrasiabi, Low-Permeability Concrete: Water-to-cement ratio optimization for designing drinking water reservoirs, International Journal of Innovations in Engineering and Science, 2(11) (2017) 20-24.
[5]Ahmad, A.K. Azad, K.F. Loughlin, Effect of the key mixture parameters on tortuosity and permeability of concrete, Journal of Advanced Concrete Technology, 10(3) (2012) 86-94.
[6]Halamickova, R.J. Detwiler, D.P. Bentz, E.J. Garboczi, Water permeability and chloride ion diffusion in Portland cement mortars: relationship to sand content and critical pore diameter, Cement and Concrete Research, 25(4) (1995) 790-802.
[7]C. Fu, W. Yeih, J.J. Chang, R. Huang, The influence of aggregate size and binder material on the properties of pervious concrete, Advances in Materials Science and Engineering, 2014 (2014) 1-17.
[8]A. Warda, A.N. Munaz, Effects of aggregate gradation on water permeability of concrete, Advanced Materials Research, 488 (2012) 248-252.
[9]Kong, Y. Ge, Mechanism study of effect of coarse aggregate size on permeability of concrete, ACI Materials Journal, 112(6) (2015) 767-774.
[10]Yu, C. Ni, M. Tang, X. Shen, Relationship between water permeability and pore structure of Portland cement paste blended with fly ash, Construction and building materials, 175 (2018) 458-466.
[11]D. Abyaneh, H. Wong, N. Buenfeld, Computational investigation of capillary absorption in concrete using a three-dimensional mesoscale approach, Computational Materials Science, 87 (2014) 54-64.
[12]G. Amadi, K.I. Amadi-Oparaeli, Effect of admixtures on strength and permeability of concrete, The International Journal of Engineering and Science, 7(7) (2018) 1-7.
[13]Markiv, K. Sobol, M. Franus, W. Franus, Mechanical and durability properties of concretes incorporating natural zeolite, Archives of Civil and Mechanical Engineering, 16(4) (2016) 554-562.
[14]Samimi, S. Kamali-Bernard, A.A. Maghsoudi, M. Maghsoudi, H. Siad, Influence of pumice and zeolite on compressive strength, transport properties and resistance to chloride penetration of high strength self-compacting concretes, Construction and building materials, 151 (2017) 292-311.
[15]Shaikh, S. Kerai, S. Kerai, Effect of micro silica on mechanical and durability properties of high volume fly ash recycled aggregate concrete (HVFA-RAC), Advances in Concrete Construction, 3 (2015) 317-332.
[16]P. Khiavi, M.A. Ghorbani, Effects of micro silica on permeability of plastic concrete, Journal of Materials Science and Engineering A, 4(12) (2014) 372-375.
[17]G. Li, A.K. Kwan, Adding limestone fines as cementitious paste replacement to improve tensile strength, stiffness and durability of concrete, Cement and Concrete Composites, 60 (2015) 17-24.
[18]Yuan, Y. Chi, Water permeability of concrete under uniaxial tension, Structural Concrete, 15(2) (2014) 191.102
[19]Wang, X. Sun, J. Wang, P. Monteiro, Permeability of concrete with recycled concrete aggregate and pozzolanic materials under stress, Materials, 9(4) (2016) 252.
[20]Qian, B. Huang, Y. Wang, M. Wu, Water seepage flow in concrete, Construction and building materials, 35 (2012) 491-496.
[21]Lun, R. Lackner, Permeability of concrete under thermal and compressive stress influence; an experimental study, MATEC Web of Conferences, 6 (2013) 03007.
[22]B.A. Houaria, M. Abdelkader, C. Marta, K. Abdelhafid, Comparison between the permeability water and gas permeability of the concretes under the effect of temperature, Energy Procedia, 139 (2017) 725-730.
[23]T. Phung, N. Maes, G. De Schutter, D. Jacques, G. Ye, Determination of water permeability of cementitious materials using a controlled constant flow method, Construction and Building Materials, 47 (2013) 14881496.
[24]H. Yoo, H.S. Lee, M.A. Ismail, An analytical study on the water penetration and diffusion into concrete under water pressure, Construction and Building Materials, 25(1) (2011) 99-108.
[25]Murata, O. Yoshio, K. Shigeo, I. Yoshinari, Study on watertightness of concrete, Materials Journal, 101(2) (2004) 107-116.
[26]BS EN 12390-8, Testing hardened concrete: Depth of penetration of water under pressure, British Standards Institution, London (2009).
[27]DIN 1048, Testing Concrete: Testing of Hardened Concrete (Specimens Prepared in Mould), Deutsches Institut für Normung, Germany (1991).
[28]Naderi, Determination of the permeability of concrete, stone, mortar, brick and other building construction materials using cylindrical chamber method, Iran Intellectual Property Office (IRIPO), Registration number 67726, Iran (2010).
[29]Naderi, Determination of material strength and adhesion, Intellectual Property Office (IRIPO), Registration number 32502, Iran (2005).
[30]Gowripalan, H. Mohamed, Chloride-ion induced corrosion of galvanized and ordinary steel reinforcement in high-performance concrete, Cement and Concrete Research, 28(8) (1998) 1119-1131.
[31]S. Ahmed, O. Kayali, W. Anderson, Chloride penetration in binary and ternary blended cement concretes as measured by two different rapid methods, Cement and Concrete Composites, 30(7) (2008) 576-582.
[32]B. Polder, W.H. Peelen, Characterisation of chloride transport and reinforcement corrosion in concrete under cyclic wetting and drying by electrical resistivity, Cement and Concrete Composites, 24(5) (2002) 427-435.
[33]BS EN 1008, British standard for mixing water for concrete: Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete, British Standard Institution, London (2002).
[34]Reynolds, An experimental investigation of the circumstances which determine whether the motion of water shall be direct or sinuous, and of the law of resistance in parallel channels, Philosophical Transactions of the Royal society of London, 174 (1883) 935-982.
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