Study on the Properties of Physical and Chemical Foaming Concrete

Abstract:

Foam concrete samples with different density were prepared by physical and chemical foaming method respectively, and the demoulding time, 24h water absorption, mechanical properties and internal bubble holes structure of physical and chemical foaming samples were determined and compared. The result showed that the lowest dry density of physical foaming samples could only reach about 280 kg/m3, or there would be bubble collapse phenomenon after samples moulded; When samples dry density were about the same, compared with chemical foaming samples, physical foaming samples had longer demoulding time, significantly lower 24h water absorption, higher 3 days compressive and flexural strength and much better internal bubble holes structure.

• Periodical: Advanced Materials Research (Volume 549)
• Pages: 741-744
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.549.741
• Online since: July 2012
• Authors: Qi Jin Li, Guo Zhong Li, Cong Cong Jiang
• Keywords: Chemical Foaming Method, Foam Concrete, Physical Foaming Method

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