The effect of mechanical activation of lime putty on properties of the autoclaved calcium hydrosilicate materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F16%3AN0000046" target="_blank" >RIV/26232511:_____/16:N0000046 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S1877705816317404" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1877705816317404</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2016.07.352" target="_blank" >10.1016/j.proeng.2016.07.352</a>

Result language

angličtina

Original language name

The effect of mechanical activation of lime putty on properties of the autoclaved calcium hydrosilicate materials

Original language description

The lime putty is a non-Newtonian fluid that can be either thixotropic or rheopectic depending on burning process of the lime, the presence of the quartz sand and other parameters. One of the most important lime putty characteristics is its plasticity which affects its workability and use. It is possible to increase the lime putty plasticity by mechanical activation. This work focuses on the effect of the mechanical activation of the lime putty on its rheological behavior and on properties of lime hydrosilicate autoclaved materials. Fresh lime putty was activated in a high-speed mixer at 1000 RPM for 1, 3, 5 and 10 minutes. Non-activated lime putties show rheopectic behavior. Rheopectic behavior becomes slightly more distinct after 1 min. of activation and then less distinct with increasing time of activation. After 10 min. of activation, the system shows no time-dependent properties, nor even slight thixotropic behavior. This trend can be related to process where smaller and smaller aggregates are fragmented in the suspension. The hydrosilicate materials were prepared in two series from quicklime and finely ground sand with the ratio C/S 0.85, under hydrothermal conditions. The amount of xonotlite in hydrosilicate material increases with activation time as the increased amount of portlandite particles retards the reaction. 11.3 Å tobermorite crystallizes more slowly and formation of xonotlite is accelerated.

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

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Procedia Engineering

ISSN

1877-7058

e-ISSN

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Volume of the periodical

2016

Issue of the periodical within the volume

151

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

18 – 25

UT code for WoS article

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EID of the result in the Scopus database

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