ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 60, (2) 141 - 145 (2016)


SHRINKAGE REDUCTION AND CRACK PREVENTION OF ALKALI-ACTIVATED PHOSPHOROUS SLAG CEMENT
 
Wang Yanan, Fang Yonghao, Gong Yongfan, Zhu Chenhui, Gu Yamin
 
College of Mechanics and Materials, Hohai University, Nanjing 210098, P.R. China

Keywords: Alkali-activated cement, Phosphorous slag, Shrinkage, Cracking, Expansive agent, Polypropylene fiber
 

The effects of fly ash, calcium oxide and polypropylene fiber on the physical and mechanical properties, shrinkage and cracking behaviors of alkali-activated phosphorous slag cement (AA-PS-C) were studied. The results show that replacing 10-15% phosphorous slag by fly ash and adding calcium oxide as an expansive agent reduce the shrinkage of AA-PS-C. Fly ash will increase the flexural strength, although the compressive strength will be slightly decreased, while the calcium oxide expansive agent coated with aluminum stearate will slightly shorten the setting time and reduce the strength. Adding polypropylene fiber can greatly increase the crack-resistance of AA-PS-C.


Record in: Scopus | Web of Science

PDF (0.7 MB)

doi: 10.13168/cs.2016.0021
 
 
Licence Creative Commons © 2015 - 2019
Institute of Rock Structure and Mechanics AS CR, v.v.i. & University of Chemistry and Technology, Prague
Webmaster | Journal Contact