Rheological and hydration behaviour of cement pastes containing porcelain polishing residue and different water-reducing admixtures
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | 120850 |
Journal / Publication | Construction and Building Materials |
Volume | 262 |
Online published | 22 Sept 2020 |
Publication status | Published - 30 Nov 2020 |
Externally published | Yes |
Link(s)
Abstract
The pozzolanic activity and great availability of ceramic wastes (such as porcelain polishing residue – PPR) have increased their usage as supplementary cementitious material. However, studies investigating the effect of water-reducing admixtures on the early-age performance of cement-based materials containing such wastes are still lacking. This work investigated the effect of a lignosulfonate-based plasticizer (PL) and two polycarboxylate-based superplasticizers (SP1 and SP2) on the rheology and hydration kinetics of cement pastes containing PPR and quartz filler. Rheological results show that the volumetric replacement of 20% cement by PPR increased the yield stress, viscosity and thixotropy. PL and SP2 show inferior affinity with PPR, exhibiting increased yield stress, viscosity and thixotropy compared with the reference mix. By contrast, SP1 resulted in rheological properties similar to those of the reference mix and improved performance compared with the quartz filler-containing mix. Calorimetry results indicate that both SPs extended the induction period and increased the main heat flow peak compared with PL. The use of a proper water-reducing admixture can overcome workability losses caused by PPR incorporation, reinforcing the feasibility of using this residue as supplementary cementitious material.
© 2020 Elsevier Ltd.
© 2020 Elsevier Ltd.
Research Area(s)
- Cement hydration, Ceramic waste, Porcelain polishing residue, Rheology, Water-reducing admixture
Bibliographic Note
Publisher Copyright:
© 2020 Elsevier Ltd
Citation Format(s)
Rheological and hydration behaviour of cement pastes containing porcelain polishing residue and different water-reducing admixtures. / de Matos, Paulo R.; Jiao, Dengwu; Roberti, Fernanda et al.
In: Construction and Building Materials, Vol. 262, 120850, 30.11.2020.
In: Construction and Building Materials, Vol. 262, 120850, 30.11.2020.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review