Experimental investigation on two new corn stalk biocomposites based on magnesium phosphate cement and ordinary Portland cement
| Autor: | Bing Chen, Yongquan Wei, Muhammad Riaz Ahmad, Chunyu Song |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Cement
Magnesium phosphate Materials science Absorption of water Aggregate (composite) business.industry 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction 0201 civil engineering law.invention Portland cement Compressive strength law Thermal insulation 021105 building & construction General Materials Science Composite material business Porosity Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 224:700-710 |
| ISSN: | 0950-0618 |
| Popis: | This paper reports a comparative investigation of two new corn stalk (CS) biocomposites based on magnesium phosphate cement (MPC) and ordinary Portland cement (OPC). Two composites with identical corn stalk contents and different binders were prepared. The porosity, water absorption, drying kinetics, compressive strength and thermal properties of the biocomposites were measured. The experimental results show that the lower open porosity of the CS-MPC concrete results in lower water absorption and weaker evaporation performance. In addition, the open porosity and closed porosity play important roles in the effect of temperature on the thermal properties in the dry state and moist state. The dry and moist thermal conductivities of CS-MPC concrete is slightly higher than that of the CS-OPC concrete, which can meet the thermal insulation requirements. Due to the excellent bonding between the MPC binder and corn stalk plant aggregates, the compressive strength of CS-MPC concrete is significantly higher than that of CS-OPC concrete. These results indicate that MPC binder is more suitable for producing plant aggregate concrete. |
| Databáze: | OpenAIRE |
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