| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6714085 | Construction and Building Materials | 2018 | 10 Pages |
Abstract
The effects of pore former dosage, heating rate, and curing time on the microstructure of the obtained ceramsite were investigated. The results revealed that the pore size and apparent porosity increase as a function of the pore former dosage and heating rate, respectively; whereas decrease as a function of curing time. For the ceramsite without curing, a maximum apparent porosity of 32.67% could be reached under a pore former dosage of 2.0% and a heating rate of 20.0â¯Â°C/min; however, for those cured for 72â¯h, the maximum apparent porosity was estimated to be only 27.43%. The sound-absorption performance correlated positively with the apparent porosity, whereas the growth and decline of pore size resulted in fluctuation of sound-absorption coefficient within the frequency rang of 200-2000â¯Hz because the linear flow resistance and the air friction increase with the decrease of the pore diameter.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Huiqin Wu, Teng Zhang, Rongjun Pan, Yeyang Chun, Hongmei Zhou, Wanxu Zhu, Hanze Peng, Qing Zhang,