Isothermal-calorimetry study of the effect of plasticizer and air-entraining agent on the hydration kinetics of blended cements containing brick powder as a pozzolanic addition

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00242928" target="_blank" >RIV/68407700:21110/16:00242928 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Isothermal-calorimetry study of the effect of plasticizer and air-entraining agent on the hydration kinetics of blended cements containing brick powder as a pozzolanic addition

Original language description

The hydration heat development in blended binders composed of Portland cement and waste ceramic powder originating in the contemporary hollow brick production is analyzed by isothermal calorimetry, including the influence of plasticizer, air-entraining agent and their combination on hydration kinetics, in the early hydration period up to 140 h. Experimental results show that the brick powder does not affect the rate of hydration reactions up to 20% Portland cement replacement level, for higher dosage the C3S hydration process is slowed down by about 2 h only. The pozzolanic reaction is identified to begin at 45 h; it continues during the whole remaining time period and is most pronounced up to 20% brick powder dosage in the blends. The influence of applied chemical admixtures on the hydration heat development is found not very significant. The retardation effects of superplasticizer, air-entraining agent and their combination on the C3S hydration are lower than 2 h in all analyzed cases and the magnitude of the C3S maximum of heat evolution curve is only up to 7% lower.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JN - Civil engineering

OECD FORD branch

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Project

<a href="/en/project/GA16-02862S" target="_blank" >GA16-02862S: Low-energy binders based on alkali-activated waste brick powder</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Cement Wapno Beton

ISSN

1425-8129

e-ISSN

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Volume of the periodical

21

Issue of the periodical within the volume

1

Country of publishing house

PL - POLAND

Number of pages

9

Pages from-to

"1"-"+"

UT code for WoS article

000373422400001

EID of the result in the Scopus database

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