Aliakbar Sayadi and Thomas R. Neitzert and G. Charles Clifton and Min Cheol Han
Assessment of Vermiculite Concrete Containing BioPolymer Aggregate
1180 - 1187
2016
10
9
International Journal of Civil and Environmental Engineering
https://publications.waset.org/pdf/10005364
https://publications.waset.org/vol/117
World Academy of Science, Engineering and Technology
The present study aims to assess the performance of vermiculite concrete containing polylactic acid beads as an ecofriendly aggregate. Vermiculite aggregate was replaced by polylactic acid in percentages of 0, 20, 40, 60 and 80. Mechanical and thermal properties of concrete were investigated. Test results indicated that the inclusion of polylactic acid decreased the PH value of concrete and all the polylactic acid particles were dissolved due to the formation of sodium lactide and lactide oligomers when subjected to the high alkaline environment of concrete. In addition, an increase in thermal conductivity value of concrete was observed as the ratio of polylactic acid increased. Moreover, a set of equations was proposed to estimate the watercement ratio, cement content and water absorption ratio of concrete.
Open Science Index 117, 2016