**Author details**

Elaine Patrícia Araújo1\*, Divânia Ferreira da Silva1 , Shirley Nobrega Cavalcanti1 , Márbara Vilar de Araujo Almeida2 , Edcleide Maria Araújo1 and Marcus Vinicius Lia Fook1

\*Address all correspondence to: elainepatriciaaraujo@yahoo.com.br

1 Department of Materials Engineering, Federal University of Campina Grande, Brazil

2 Department of Civil Engineering, Federal University of Campina Grande, Brazil
