Chen, R (2025) Investigation of mechanical and thermal performances and masonry quality for new raw soil-based insulating hollow bricks. Architectural Engineering and Design Management, 21(3), pp. 533-552. ISSN 1745-2007
Abstract
The development of raw soil-based insulating hollow bricks (RSIHB) provides a promising way for improving the efficiency of building energy conversation and resource utilization of construction waste soil. In this paper, the response surface method (RSM) was adopted to study the effect of multifactor on mechanical and thermal performances of modified raw soil-based samples. The results indicate that the thermal conductivity is significantly affected by the interactions between molding pressure and mixture moisture content, as well as between mixture moisture content and cement admixture. Thus, the optimal mix ratio was determined by the RSM-based regression model. The assessment based on numerical simulation demonstrates that the middle wall ribs immensely improve the stress concentration. The porous structure elongates the path of heat flow conduction, effectively enhancing the thermal resistance of the brick. In addition, bonding strength tests manifest that the mortar consistency should be within 60–80 mm for construction and plastering of the new raw soil-based insulating hollow brick. The research results have strong theoretical significance and practical value for recycling of construction waste and provide a reference for actual production and construction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | mechanical performance assessment; modified soil; response surface method; thermal conductivity; treatment of solid wastes |
| Index terms: | interaction, construction waste, performance assessment, investigation, recycling, numerical simulation, thermal conductivity, stress concentration, regression model, mortars (material), resource utilization, efficiency, moisture content, thermal resistance, admixture, response surface method, thermal performance, solid wastes |
| Subjects: | statistical analysis, performance management, material properties and characteristics, modelling and simulation, building materials, energy systems, data collection methods, assessment methods, behavioral psychology, structural engineering, health safety and environment, site logistics, materials science, waste management |
| Topics: | Site Management, Human Resources, Research Practice, Construction Materials, Quality Management, Sustainability, Health and Safety, Engineering Principles |
| Descriptive scope: | 3 PCA |
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