Effects on the Properties of Self-Compacting Cement Paste (PAA) with the Addition of Superabsorbent Polymer

Michel Henry Bacelar de Souza; Bárbara Almeida Teixeira; Paulo Cesar Gonçalves; Lucas Ramon Roque da Silva; Míriam de Lourdes Noronha Motta Melo; Vander Alkmin Dos Santos Ribeiro; Daniela Sachs; Patrícia Capellato; Valquíria Claret Dos Santos

doi:10.3390/ma15238478

Effects on the Properties of Self-Compacting Cement Paste (PAA) with the Addition of Superabsorbent Polymer

Materials (Basel). 2022 Nov 28;15(23):8478. doi: 10.3390/ma15238478.

Authors

Michel Henry Bacelar de Souza¹, Bárbara Almeida Teixeira¹, Paulo Cesar Gonçalves¹, Lucas Ramon Roque da Silva², Míriam de Lourdes Noronha Motta Melo², Vander Alkmin Dos Santos Ribeiro¹, Daniela Sachs³, Patrícia Capellato³, Valquíria Claret Dos Santos¹

Affiliations

¹ Institute of Natural Resources, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá Cep 37500 903, MG, Brazil.
² Institute of Mechanical Engineering, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá Cep 37500 903, MG, Brazil.
³ Centre for Studies and Innovation in Biofunctional Advanced Materials, Institute of Physics and Chemistry, Unifei-Federal University of Itajubá, Av. BPS, 1303, Itajubá Cep 37500 903, MG, Brazil.

Abstract

The addition of Superabsorbent Polymer (SAP) decreases the effect of autogenous shrinkage present in pastes, mortars, and concretes. In this study we investigated the influence of the addition of SAP in self-compacting cement paste mixtures. Eighteen 5 × 10 cylindrical specimens were molded in all, three for each mixture (CPII base, CPII 0.15%SAP/600μm, CPII 0.15%SAP/800 μm, CPV base, CPV 0.15%SAP/600 μm, CPV 0.15%SAP/800 μm). Two types of cement were tested, CP II-Z and CP V-ARI with 0.15% of weight replaced per two diameters of SAP (600 μm and 800 μm). The samples followed the standards required. Mini slump tests were carried out in the fresh state, and uniaxial compressive strength, elastic modulus, specific mass, absorption, and air content in the hardened state after 28 days. The results obtained show the SAP is high indicated to replaced cement in small % of weight i/to fresh and hardened paste. Likewise, the group mix n° 3 composed of CPII 0.15% of SAP with 800 μm diameter presented the best result.

Keywords: internal cure; self-compacting paste (PAA); superabsorbent polymer (SAP).

Grants and funding

The authors thank CNPq for the financial support PIBIC CNPq.