Publisher : The Korean Institute of Building Construction
DOI : 10.5345/JKIBC.2016.16.1.035
Title & Authors
Mechanical Performance Evaluation of Cement Paste with Foaming Agent using FEM Analysis Based on Picture Image Kim, Bo-Seok; Shin, Jun-Ho; Lee, Han-Seung;
Concrete is a representative heterogeneous material and mechanical properties of concrete are influenced by various factors. Due to the fact that pores in concrete affect determining compressive strength of concrete, studies which deal with distribution and magnitudes of pores are very important. That way, studies using picture imaging have been emerged. Studies on mechanical performance evaluation of structural lightweight foamed concrete and FEM analysis based on picture image are inadequate because lightweight foamed concrete has been researched for only non-structural. Therefore, in this study, cement paste with foaming agent to evaluate mechanical performance is made, FEM analysis with picture image is conducted and young's modulus of experiment and analysis are compared. In this study, dosage of foaming agent is determined 7 level to check pore distribution and water-binder ratio is determined 20% to progress research about structural light weight foamed concrete. Weight of unit volume is minimum at 0.8% of foaming agent dosage. However, weight of unit volume is increased over 0.8% of foaming agent dosage because of interconnection with independent pores. For FEM analysis, cement paste is photographed to use image analyzer(HF-MA C01). Consequently, the fact that Young's Modulus of experiment and FEM analysis are same is drawn by using OOF(Object Oriented Finite elements).
Chung SY, Han TS. Percolation Analysis on Porous Concrete Using Microstructural CT Image Processing and Probability Distribution Functions. The Journal of Korean Society of Civil Engineers. 2012 Jan;32(1):31-7
Yun KK, Jeong WK, Kwon HC, Jun IK, Lee BH. Analysis of Air Voids System Using Image Analysis Technique in Hardened Concrete. Journal of the Korea Concrete Institute. 2004 Dec;16(6):741-50
Jang BJ, Chon BJ, Hong YH, Bae JO, Lim HB. Estimation of Pore Structure Characteristric and Permeability of Hybrid Concrete by Image Analysis Method. International Journal of Highway Engineering. 2015 Feb;17(1):59-67
Choi MC. An Experimental Study on the Development of Structural Lightweight Concrete Using Micro Foam Agent. [Master's thesis]. [Seoul(Korea)]: Hanyang University; 2006. 62 p.
Jeong WK, Hong CW, Yun KK. Development of Plane Spacing Factor of Concrete Air Voids by Image Analysis Method. The Journal of Korean Society of Civil Engineers. 2005 Nov;25(6):1197-203
Langer SA, Fuller E, Carter WC. OOF : An Image-Based Finite-Element Analysis of Material Microstructures. Computing in Science & Engineering. 2001 May-Jun;3(3):15-23