Effect of temperature on the early-stage hydration characteristics of Portland cement: a large-volume calorimetric study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F12%3A00194298" target="_blank" >RIV/68407700:21110/12:00194298 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2012.06.025" target="_blank" >http://dx.doi.org/10.1016/j.conbuildmat.2012.06.025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2012.06.025" target="_blank" >10.1016/j.conbuildmat.2012.06.025</a>

Result language

angličtina

Original language name

Effect of temperature on the early-stage hydration characteristics of Portland cement: a large-volume calorimetric study

Original language description

A large-volume isothermal heat flow calorimeter is applied for determination of the specific hydration heat power, N, and specific hydration heat, Q, of Portland cement CEM I 42.5 R as a function of time. The measurements are carried out for the cement paste with w/c = 0.3, 0.35, and 0.4 in the temperature range of 5 °C to 30 °C. Experimental results show that Q in the initial hydration phase (including C3A hydration and the dormant period up to the first local minimum on the N(t) curve) decreases two times when the temperature increases from 5 °C to 30 °C, and it is independent of w/c within the studied range. The second local maximum on the N(t) curve (corresponding to the C3S hydration phase) is four to five times higher for 30 °C as compared with 5°C, and it decreases up to 20% with increasing w/c; the time of its appearance is three times lower for 30 °C than 5 °C, and it is also independent of w/c. The apparent activation energy of the CEM I 42.5 R hydration is found independent

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

JI - Composite materials

OECD FORD branch

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Project

<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>

Continuities

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

Publication year

2012

Confidentiality

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

Name of the periodical

Construction and Building Materials

ISSN

0950-0618

e-ISSN

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Volume of the periodical

36

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

969-976

UT code for WoS article

000310403900114

EID of the result in the Scopus database

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