Effect of Addition of Polyurea as an Aggregate in Mortars: Analysis of Microstructure and Strength

Polymers

Yoleima Guerra¹  Joaquin Hernández Fernández²  Hernan Chacon³  Yolima Ruiz³  Heidis Cano³  John Fredy Ríos-Rojas⁴  Esneyder Puello-Polo⁵ 

[1] Centro de Investigación en Ciencias e Ingenierías, Cecopat & A, Cartagena 131001, Bolívar, Colombia;Chemical Engineering Program, School of Engineering, Universidad Tecnológica de Bolívar, Parque Industrial y Tecnológico Carlos Vélez Pombo km 1 Vía, Turbaco 130001, Bolívar, Colombia;Department of Civil and Environmental Engineering, Universidad de la Costa, Calle 5855-66, Barranquilla 080002, Atlántico, Colombia;Department of Mechanical, Electronic and Biomedical Engineering, Antonio Nariño University, Bogotá 111321, Colombia;Grupo de Investigación en Oxi/Hidrotratamiento Catalítico y Nuevos Materiales, Programa de Química-Ciencias Básicas Universidad del Atlántico, Barranquilla 080003, Atlántico, Colombia;

关键词: mortar;    polyurea;    characterization;    construction;   

DOI  :  10.3390/polym14091753

来源: DOAJ

【 摘 要 】

The addition of polymers in construction is a new tendency and an important step toward the production of structures with better functional properties. This work investigates the addition of polyurea (PU) as a polymeric material in mortars. Polymer mortars were manufactured with the addition of polyurea retained in different sieves (T50 and T100) and different concentrations (2% and 5%). The characterization of the, polyurea (PU)control mortar (PU0%) and manufactured polyurea mortars (PU2%T50, PU5%T50, PU2%T100, and PU5%T100) was conducted by means of morphological analysis, SEM, XRF, TGA, and a compressive strength test of hydraulic mortars. The results show that mortars with polyurea retained in sieve 100 with a particle size of 150 μm exhibit better thermal behavior and a greater resistance to compression with a concentration of 5% polyurea with respect to the other samples. The present work reveals that polyurea retained in sieve 100 can be considered as a polymeric additive for mortars, indicating that it could be a candidate for applications such as construction.

【 授权许可】

Unknown