Poly(carboxylated ether)s as Cement Additives: The Effect of the Addition Method on Hydration Kinetics
Year: 2024
Type: article
Abstract: Polycarboxylate ether (PCE) superplasticisers have been widely used in cement formulations. However, it is not until recently that several studies have analysed the relationship between the properties and the molecular structure. In the present work, PCEs with different side chain lengths and charge densities synthesised through free radical copolymerisation are used to analyse the effect they have on the hydration of ordinary Portland cement (OPC). It was found that the addition method of these PCEs to the OPC significantly affects the hydration kinetics of the cement paste. When PCEs are added through the direct addition method, a linear dependency between the retardation of hydration and the microstructure of the used PCEs is observed. On the contrary, when PCEs are added through the delayed addition method (PCEs are added to the cement paste 5 min after water), no retardation in hydration is observed, but the rate of hydration is reduced.
Source: Materials
DOI: 10.3390/ma17215343
Authors: Sara Beldarrain, Guido Goracci, Jorge S. Dolado, Aitor Barquero, Jose Ramon Leiza
Institutions: University of the Basque Country, Polymat, Material Physics Center
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,955
Awards: G1260466876, G1338257350, G1592049727, G1769947804, G210041235, G2534233662, G279363373, G2850778521, G2881813932, G367861699, G3680555492, G3940082915, G3959486596, G477486709, G548647067, G624877701, G6324140011, G646048400, G7052646135, G7162266856, NOVEL ECO-CEMENTITIOUS MATERIALS AND COMPONENTS FOR DURABLE, COMPETITIVE, AND BIO-INSPIRED OFFSHORE FLOATING PV SUBSTRUCTURES, G7950949531, G798599076, G8617589409, G893689023
OpenAlex ID: W4403939933