Browse > Article
http://dx.doi.org/10.7843/kgs.2015.31.10.37

Analysis of Influential Factors on Compressive Strength of Concrete Specimens Obtained from a Drilled Shaft Construction Site  

Lee, Kicheol (Dept. of Civil and Environ. Eng., Incheon National Univ.)
Chung, Moonkyung (Geotech. Research Eng. Div., KICT)
Kim, So Yeun (College of Business Management, Hongik Univ.)
Kim, Dongwook (Dept. of Civil and Environ. Eng., Incheon National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.10, 2015 , pp. 37-47 More about this Journal
Abstract
Recently, the quality of drilled shafts concrete has been improved significantly due to the improved concrete performance, upgraded concrete materials, and better management of on-site constructions. Despite the development, current conventional quality management on concrete constructions is still used without any criticism. In this study, compressive strength test results of more than 200 concrete specimens after 7 and 28 days of curing were collected from one site at Songdo area of Incheon. The concrete specimens were prepared from the concrete with aggregate maximum dimensions of 25 mm, target compressive strength of 40 MPa, and slump of 180 mm. Influential factors including concrete temperature, air temperature, amount of slump, amount of air, amount of salinity on concrete specimen were also examined. The database was established from collected information and statistical analyses were performed. Analyzed results confirm that "the difference between concrete temperature and air temperature" has the largest impact on the compressive strengths of specimens at the durations of 7 and 28 days.
Keywords
Drilled shaft; Specimen; Compressive strength; Temperature; Amount of slump; Amount of air; Amount of salinity; Correlation analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Alberto, M. O. and Carlos, G. F. (2010), "Goodness-of-fit Testing", International Encyclopedia of Education, Vol.7, pp.190-196.
2 Ghani, U., Shabbir, F., and Khan, K. M. (2006), "Effect of Temperature on Different Properties of Concrete", 31st Conference on Our World in Concrete & Structures, Singapore Concrete Institute.
3 Griffin, D. F. and Henry, R. L. (1964), Technical report R306: The effect of salt in concrete on compressive strength, water vapor transmission, and corrosion of reinforcing steel, U. S. Naval Civil Engineering Laboratory.
4 Heo, J. H. (1997), "Introduction to Statistical Hydrology(V)", Journal of Korea Water Resources Association, Vol.30, No.1, pp.88-96.
5 Jo, J. W. (1987), Study on the Estimation of Mixed Weibull Distribution in Life Testing, Ph.D thesis, Kyungsung University.
6 Jorge, L. R. (2003), "Anderson-darling: A Goodness fo Fit Test for Small Samples Assumptions", Selected Topics in Assurance Related Technologies(START), Vol.10, No.5, pp.1-6.
7 Kim, S. B. and Kim, E. K. (1997), "Improve the Quality of Concrete and Concrete Standard Specification Revisions", Journal of Korea Concrete Institute, Vol.9, No.2, pp.46-54.
8 KIC (2002), "Building Construction Expertise Commentary", Journal of Korea Institute of Building Construction, Vol.2, No.1, pp.119-124.
9 Landwehr, J. M., Matalas, N. C., and Wallis J. R. (1979), "Estimation of Parameters and Quantiles of Wakeby Distribution", Water Resources Research, Vol.15, pp.1361-1379.   DOI
10 Lee, C., Bonacci, J. F., and Thomas, M.D.A. (2000), "Accelerated Corrosion and Repairs of Reinforced Concrete Column using Carbon Fibre", Canadian Journal of Civil Engineering, Vol.125, No.3, pp. 1-5.
11 Lee, T. H. (1995), Characteristics of Concrete Compressive Strength by the Design factor of Mix Proportion, Master thesis, Kyungpook University.
12 Mazloom, M. and Ranjbar, A. (2010), "Relation between the Workability and Strength of Self-compacting Concrete", 35st Conference on Our World in Concrete & Structures, Singapore Concrete Institute.
13 MOLIT (2014), Construction Technology Management Act.
14 Nam, J. H. (2007), Research on construction features of Cast-in-place concrete pile method, Master thesis, Sangji University.
15 NPCA (2013), Air-Entraining admixtures, National Precast Concrete Association, pp.1-2.
16 Robertoson, S. (2002), "Concrete: Hard Facts. Durable Structures", Science in Africa Web page, http://www.scienceinafrica.com/concretehard- facts-durable-structures.
17 Oladapo, S. A. and Ekanem, E. B (2014), "Effect of Sodium Chloride (NaCl) on Concrete Compressive Strength", International Journal of Engineering Research & Technology (IJERT), Vol.3, Issue3, pp.2395-2397.
18 Park, J. S. (2005), Wakeby Distribution and the Maximum Likelihood Estimation Algorithm in Which Probability Density Function is Not Explicitly Expressed, KSS, CSAM (Communications for Statistical Applications and Methods), Vol.12, No.2, pp.443-451.