Microstructure of lime and lime-pozzolana pastes with nanosilica

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F16%3A00458403" target="_blank" >RIV/68378297:_____/16:00458403 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/16:00301614

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0008884616301223" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0008884616301223</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cemconres.2016.02.004" target="_blank" >10.1016/j.cemconres.2016.02.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure of lime and lime-pozzolana pastes with nanosilica

Popis výsledku v původním jazyce

Nanosilica particles (nS) were added to lime (L) and lime-pozzolana (LP) pastes to study the effect of nS as apozzolanic admixture in L and to synergistically improve the pozzolanic reactivity of LP. Relationships between microstructure and mechanical properties of the pastes were examined. The macroporosity of both pastes decreased, and the compressive strength increased. SEM and X-ray μ-CT analysis accounted for explaining the inconsistent results between the porosity obtained by MIP and density by He-pycnometry. The strong pozzolanic reaction in LPnS explained the high consumption of mixing water, increment of density, and pores assigned to CSH. The SEM analysis also showed that BET and BJH can give erroneous results regarding the adsorption/desorption isotherms, thus affecting the values of the specific surface area and nanoporosity.

Název v anglickém jazyce

Microstructure of lime and lime-pozzolana pastes with nanosilica

Popis výsledku anglicky

Nanosilica particles (nS) were added to lime (L) and lime-pozzolana (LP) pastes to study the effect of nS as apozzolanic admixture in L and to synergistically improve the pozzolanic reactivity of LP. Relationships between microstructure and mechanical properties of the pastes were examined. The macroporosity of both pastes decreased, and the compressive strength increased. SEM and X-ray μ-CT analysis accounted for explaining the inconsistent results between the porosity obtained by MIP and density by He-pycnometry. The strong pozzolanic reaction in LPnS explained the high consumption of mixing water, increment of density, and pores assigned to CSH. The SEM analysis also showed that BET and BJH can give erroneous results regarding the adsorption/desorption isotherms, thus affecting the values of the specific surface area and nanoporosity.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JN - Stavebnictví

OECD FORD obor

—

Projekt

<a href="/cs/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Kumulativní časově závislé procesy ve stavebních materiálech a konstrukcích</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Cement and Concrete Research

ISSN

0008-8846

e-ISSN

—

Svazek periodika

83

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

152-163

Kód UT WoS článku

000375518500015

EID výsledku v databázi Scopus

2-s2.0-84960128438