Study on the performance of foaming reactive powder concrete based on different types and dosage of foaming agent
The influence of varying dosages of three foaming agents(sodium percarbonate,aluminum powder,and slow-release foaming agent)on the mechanical properties,thermal properties,and durability of foaming reactive powder concrete is investigated through experimental while maintaining a constant basic mix ratio.The dosages tested were from 4％to 6％for sodium percarbonate,from 0.05％to 1.50％for aluminum powder,and from 1％to 2％for slow-release foaming agent,respectively.The findings indicate that the dry density,thermal conductivity,compressive strength,and flexural strength of foamed concrete decrease as the dosage of foaming agents increases.It is determined that the mechanical and thermal properties of foaming reactive powder concrete mixing with a slow-release foaming agent are optimal.Specifically,at a dosage of 1.5％for the slow-release foaming agent,the dry density of the foaming reactive powder concrete is 1 381 kg/m3,the thermal conductivity is 0.078 W/(m·K),and the compressive and flexural strengths are 13.97 MPa and 4.88 MPa after 28 days,respectively.This mixture also exhibited the best frost resistance and an electrical flux of 505.4 C.The mentioned optimal mix ratio is reference index for the utilization of the foaming reactive powder concrete in external wall panels.
万方数据
维普
