Chemical processes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00320483" target="_blank" >RIV/68407700:21110/17:00320483 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.springer.com/gp/book/9789402410129" target="_blank" >http://www.springer.com/gp/book/9789402410129</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-94-024-1013-6_4" target="_blank" >10.1007/978-94-024-1013-6_4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemical processes

Popis výsledku v původním jazyce

In this chapter, the influence of various chemical processes on the performance of strain-hardening cement-based materials (SHCC) is discussed. SHCC was found to increase in strength when subjected to long-term elevated temperature and humidity, but to experience a decrease in strain capacity under the same conditions. Also, chlorides tend to decrease the ductility of SHCC when the material is exposed to a chlorine environment for a long time. SHCC, especially when high amounts of fly ash are used in the mix, generally do not experience problems related to alkali–silica reaction (ASR). However, in cases when reactive aggregates are used and the alkalinity in the pore water is high, ASR can occur. The fibres have been found to suppress ASR expansion and, because of the local restraining in the material, the ASR reaction can even be slowed down. The last part of the chapter deals with the self-healing properties of SHCC. Because SHCC is characterised by small cracks it has an intrinsic self-healing capacity. Parts of these cracks close by themselves when the material is stored in a humid environment or under water. Several methods of improving the self-healing capacity of SHCC by adding different types of self-healing agents to the mix are also reported.

Název v anglickém jazyce

Chemical processes

Popis výsledku anglicky

In this chapter, the influence of various chemical processes on the performance of strain-hardening cement-based materials (SHCC) is discussed. SHCC was found to increase in strength when subjected to long-term elevated temperature and humidity, but to experience a decrease in strain capacity under the same conditions. Also, chlorides tend to decrease the ductility of SHCC when the material is exposed to a chlorine environment for a long time. SHCC, especially when high amounts of fly ash are used in the mix, generally do not experience problems related to alkali–silica reaction (ASR). However, in cases when reactive aggregates are used and the alkalinity in the pore water is high, ASR can occur. The fibres have been found to suppress ASR expansion and, because of the local restraining in the material, the ASR reaction can even be slowed down. The last part of the chapter deals with the self-healing properties of SHCC. Because SHCC is characterised by small cracks it has an intrinsic self-healing capacity. Parts of these cracks close by themselves when the material is stored in a humid environment or under water. Several methods of improving the self-healing capacity of SHCC by adding different types of self-healing agents to the mix are also reported.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA13-15175S" target="_blank" >GA13-15175S: Prvky z funkčně vrstvených vláknocementových kompozitů</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

A Framework for Durability Design with Strain-Hardening Cement-Based Composites

ISBN

978-94-024-1012-9

Počet stran výsledku

22

Strana od-do

79-100

Počet stran knihy

200

Název nakladatele

Springer Science+Business Media B.V.

Místo vydání

Dordrecht

Kód UT WoS kapitoly

—