Browse > Article
http://dx.doi.org/10.11112/jksmi.2012.16.3.075

Effect of Additional Water on Durability and Pore Size Distribution in Cement Mortar  

Kwon, Seung Jun (한남대학교 건설시스템공학과)
Lee, Hack Soo (한남대학교 건설시스템공학과)
Park, Sun Gyu (목원대학교 공과대학 건축학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.16, no.3, 2012 , pp. 75-83 More about this Journal
Abstract
Porosity in concrete has close relationship with durability characteristics. Additionally mixed water can help easy mixing and workability but causes increased porosity, which yields degradation of durability performance. In this paper, cement mortar samples with 0.45 of w/c (water to cement ratio) are prepared and durability performances are evaluated with additional water from 0.45 to 0.60 of w/c. Various durability tests including strength, chloride diffusion, air permeability, saturation, and moisture diffusion are performed. Then they are analyzed with changing porosity. Changing ratios and the patterns of durability performance are quantitatively evaluated considering pore size distribution, total porosity, and additional water content.
Keywords
Cement mortar; Porosity; Chloride diffusion; Permeability; Saturation; Pore size;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 소형석, 소양섭, "포졸란재 함유 콘크리트의 투수 및 투기성과 염화물이온 투과성", 대한건축학회지, 제19권 11호, 2003, pp.117-124.   과학기술학회마을
2 송하원, 권성준, 변근주, 박찬규, "혼화재를 사용한 고성능 콘크리트의 배합특성을 고려한 염화물 확산 해석기법에 관한 연구", 대한토목학회 논문집, 제25권 1A호, 2005, pp.213-223.   과학기술학회마을
3 Bungey, J. H., Millard, S. G., Testing of Concrete in Structures, Blackie Acrdemic & Professional, 1996.
4 Concrete Society, Permeability Testing of Site Concrete-A Review of Methods and Experiments, Technical Report No. 31, London, 1987.
5 Dhir, R. K., Hewlett, P. C., Chan, Y. N., "Near Surface Characteristics of Concrete: Intrinsic Permeability", Magazine of Concrete Research, vol. 41, 1988, pp.87-97.
6 Harry, K. G., Johnson, A., "A Non-Destructive Technique for Measuring Ceramic Porosity using Liquid Nitrogen", Cement and Concrete Research, vol. 31, 2004, pp.1564-1575.
7 Hedenblad, G., "The Use of Mercury Intrusion Porosimetry or Helium Porosity to Predict the Moisture Transport Properties of Hardened Cement Paste", Advanced Cement Based Materials, vol. 6, 1997, pp.123-129.   DOI   ScienceOn
8 Houst, Y., Wittmann, F. H., "The Diffusion of Carbon Dioxide and Oxygen in Aerated Concrete", International Collaboration on Material Science and Restoration, Technische Akademie, Esslingen, 1986.
9 Ishida, T., Maekawa, K., "Modeling of PH Profile in Pore Water based on Mass Transport and Chemical Equilibrium Theory", Concrete Library of JSCE, vol. 37, 2001, pp.151-166.
10 Ishida, T., Maekawa, K., Kishi, T., "Enhanced Modeling of Moisture Equilibrium and Transport in Cementitious Materials under Arbitrary Temperature and Relative Humidity History", Cement and Concrete Research, vol. 37, 2007, pp.565-578.   DOI   ScienceOn
11 Ishida, T., Maekawa, K., "Modeling of Durability Performance of Cementitious Materials and Structures based on Thermo-hygro Physics", RILEM PRO 29, Life Prediction and Aging Management of Concrete Structures, 2003, pp.39-49.
12 Ishida, T., Soltani, M., Maekawa. K., "Influential Parameters on the Theoretical Prediction of Concrete Carbonation Process", Proceedings. 4th International Conference on Concrete Under Severe Conditions, Seoul, Korea 2004, pp.205-212.
13 Jung, S. H., Diffusivity of Carbon Dioxide and Carbonation in Concrete through Development of Gas Diffusion Measuring System, Ph.D. dissertation, Dept. of Civil Engineering, Seoul National University, Korea, 2002.
14 Kumar, R., Bhattacharjee, B., "Study on Some Factors Affecting the Results in the Use of MIP Method in Concrete Research", Cem Concr Res 33, 2003, pp.417-424.   DOI   ScienceOn
15 Kwon, S.-J., Song, H.-W., "Analysis of Carbonation Behavior in Concrete using Neural Network Algorithm and Carbonation Modeling", Cement and Concrete Research, vol. 40, 2010, pp.119-127.   DOI   ScienceOn
16 Maekawa, K., Ishida, T., "Modeling of Structural Performances Under Coupled Environmental and Weather Actions", Materials and Structures, vol. 35, 2002, pp.594-602.
17 Maekawa, K., Ishida, T., Kishi, T., "Multi-Scale Modeling of Structural Concrete", London and New York, Taylor & Francis, 2009.
18 Maekawa, K., Ishida, T., Kishi, T., "Multi-Scale Modeling of Concrete Performance", Journal of Advanced Concrete Technology, vol. 1, 2003, pp.91-126.   DOI
19 Metha, K., Monteiro, P. J. M., "Concrete: Structure, Properties, and Materials", vol. 2, Prentice Hall, New Jersy. 1993.
20 Neithalath, N., "Analysis of Misture Tansport in Mortar and Concrete Using Sorption-Diffusion approach", ACI Materials Journal, vol. 103, 2006, pp.209-217.
21 Neville, A., Properties of Concrete, 4th Ed. Longman (revised), 1996.
22 Papadakis, V. G., Vayenas, C. G., Fardis, M. N., "Fundamental Modeling and Experimental Investigation of Concrete Carbonation", ACI Materials Journal, vol. 88, 1991, pp.363-373.
23 Ngala, V. T., Page, C. L., "Effects of Carbonation on Pore Structure and Diffusional Properties of Hydrated Cement Paste", Cement and Concrete Research, vol. 27, 1997, pp.995-1007.   DOI   ScienceOn
24 Nyame, B. K., Illston, J. M., "Relationship between Permeability and Pore Structure of Hardened Cement Paste", Magazine of Concrete Research, vol. 33, 1981, pp.139-146.   DOI   ScienceOn
25 Otsuki, N., Nagatataki, S., Nakashita, K., "Evaluation of $AgNO_3$ Solution Spray Method for Measurement of Chloride Penetration into Hardened Cementitious Matrix Materials", ACI Materials Journal, vol. 89, 1992, pp.587-592.
26 Parrot, L. J., "Effect of Changes in UK Cements upon Strength and Recommended Curing Times", Concrete, vol. 19, 1985, pp.22-24.
27 Price, H. C., "Factors Influencing Concrete Strength", ACI Materials Journal, vol. 47, 1951, pp.417-432.
28 Song, H.-W., Cho, H. J., Park, S. S., Byun, K. J., Maekawa, K., "Early-Age Cracking Resistance Evaluation of Concrete Structure", Concrete Science Engineering, vol. 3, 2001, pp.62-72.
29 Song, H.-W., Kwon, S.-J., "Permeability Characteristics of Carbonated Concrete Considering Capillary Pore Structure", Cement and Concrete Research, vol. 37, 2007, pp.909-915.   DOI   ScienceOn
30 Song, H.-W., Kwon, S.-J., Byun, K. J., Park, C. K., "Predicting Carbonation in Early-Aged Cracked Concrete", Cement and Concrete Research, vol. 36, 2006, pp.979-989.   DOI   ScienceOn
31 Tang, L., Nilsson, L. O., "A Study of the Quantitative Relationship between Permeability and Pore Size Distribution of Hardened Cement Pastes", Cement and Concrete Research, vol. 22, 1992, pp.541-550.   DOI   ScienceOn
32 Whiting, D., Permeability of Selected Concrete. in Permeability of Concrete, ACI Special Publication, SP-108, Detroit,1988, pp.195-222.
33 Tang, L., Nilsson, L. O., "Chloride Binding Capacity and Binding Isotherms of OPC Paste and Mortar", Cement and Concrete Research, vol. 23, 1993, pp.347-353.   DOI   ScienceOn