Transactions of Nanjing University of Aeronautics & Astronautics
Quantitative Analysis of Relationship Between Pore Structure and Compressive Strength of Foamed Concrete
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Abstract:
The effect of dry density, water-cement ratio, the addition of fly ash, and sand content on the porosity and pore distribution of foamed concrete is investigated. Digital microscopy and Image J software are employed to examine the landscape of pores with different sizes. Based on the Balshin empirical formula, a mathematical model is established to quantitatively predict the relationship between the pore structures and the compressive strength of foamed concrete. The results well demonstrate that there is a significant correlation between the modified formula and empirical parameters.
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This work was supported by the National Science & Technology Pillar Program during the Twelfth Five-Year Plan Period (No.2015BAL02B02), the Jiangsu R & D Project of Modern Agriculture(No.BE2015349), and the China MCC "three five" Major Science and Technology Projects (MCC,[2013]1).
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