@inproceedings{4773dde962224f50bf3d78aca933100c,
title = "The effect of the charge density of a comb polyphosphate superplasticizer on the structural build-up of cement paste",
abstract = "Lately, there has been rising attention to superplasticizers (SP) based on polyphosphate esters. However, the influence of the molecular structure of the polyphosphate polymers on time-dependent properties such as structural build-up has not been examined yet intensively. To investigate this effect, three comb polyphosphate superplasticizers with different charge densities were synthesised by free radical polymerisation. Our findings indicate that SP with the lowest and medium charge densities extend the induction period more strongly than the SP with the highest charge density. The reduction of the structural build-up rate is linearly dependent on the dosage and concentration of the functional group of polyphosphate SP in the cementitious system. This study proposes a mathematical equation expressing the relationship between the structural build-up rate during the induction period and the molecular structure of the polyphosphate SP.",
keywords = "admixture, polyphosphate, structural build-up, superplasticizer",
author = "Alexander Mezhov and Wolfram Schmidt and Hang Zhang and Diesendruck, {Charles E.}",
note = "Publisher Copyright: {\textcopyright} 2022 American Concrete Institute. All rights reserved.; 13th International Conference on Superplasticizers and Other Chemical Admixtures in Concrete ; Conference date: 10-07-2022 Through 13-07-2022",
year = "2022",
month = jul,
day = "1",
language = "אנגלית",
series = "American Concrete Institute, ACI Special Publication",
pages = "255--262",
editor = "Denny Coffetti and Luigi Coppola and Terence Holland",
booktitle = "Superplasticizers and Other Chemical Admixtures in Concrete - Conference Proceedings, 13th International Conference",
}