Effects of surfactants/stabilizing agents on the microstructure and properties of porous geopolymers by direct foaming
Source abstract
Abstract
Metakaolin-based porous geopolymers were synthesized by direct foaming using various surfactants/stabilizing agents with or without chemical pore-forming agent (hydrogen peroxide). The effects of surfactants/stabilizing agents and solid loading on their pore morphology, density, porosity, and some properties, such as thermal conductivity and compression strength, were investigated. Experimental data and different theoretical models were successfully applied to evaluate both compression strength (σ) and effective thermal conductivity (λ) as a function of porosity (ε). Porous geopolymers with higher ε presented both a lower value of mechanical strength and improved thermal conductivity performance. The variation of σ with ε could be well described by the minimum solid area (MSA) model, and the variation of λ with ε was found to be more accurately described using a universal model derived from the five basic models.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China
College of Civil Engineering, Hunan University, Changsha, China
Department of Industrial Engineering, University of Padova, Padova, Italy
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA
Funding
Fundamental Research Funds for the Central Universities · Heilongjiang Provincial Postdoctoral Science Foundation · Scientific Research Foundation for the Returned Overseas Chinese Scholars of Heilongjiang Province
References (54)
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