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

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 poly...

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Bibliographic Details
Published in:Polymers 2022-04, Vol.14 (9), p.1753
Main Authors: Chacon, Hernan, Cano, Heidis, Fernández, Joaquin Hernández, Guerra, Yoleima, Puello-Polo, Esneyder, Ríos-Rojas, John Fredy, Ruiz, Yolima
Format: Article
Language:English
Subjects:
Addition polymerization
Aggregates
Cement
Compressive strength
Concrete
Construction industry
Curing
Highway construction
Masonry
Microstructural analysis
Mortars (material)
Particle size
Polymerization
Polymers
Polyureas
Polyurethane resins
Scanning electron microscopy
Thermodynamic properties
Thermogravimetric analysis
Urban planning
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Summary: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.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym14091753