Properties of Fine Graded Perlite-Based Lightweight Cement Mortars Subjected to Elevated Temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F23%3A10253624" target="_blank" >RIV/61989100:27120/23:10253624 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27200/23:10253624

Result on the web

<a href="https://www.mdpi.com/2075-5309/13/12/2969" target="_blank" >https://www.mdpi.com/2075-5309/13/12/2969</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/buildings13122969" target="_blank" >10.3390/buildings13122969</a>

Result language

angličtina

Original language name

Properties of Fine Graded Perlite-Based Lightweight Cement Mortars Subjected to Elevated Temperatures

Original language description

The present research compared the behaviours of lightweight mortars based on ordinary Portland cement (OPC), calcium sulphoaluminate cement (CSAC), and calcium aluminate cement (CAC) containing expanded perlite and subjected to elevated temperatures. The perlite substituted natural sand in amounts of 25, 50, 75, and 100% by volume. The mortars were subjected to heating at up to 300 oC, 650 oC, and 1000 oC at a rate of 20 oC/min. The consistency and density of fresh mortars, compressive strength and density of hardened mortars after heating and cooling, and absorbability were assessed. Such a holistic testing approach is the main novelty of this research, which is related to the aforementioned mixtures and elevated temperatures. The main contribution of this article is a comparison of various cement types coupled with variations in the level of sand replacement with expanded perlite. In previous studies, comparisons were made in pairs of OPC-CSAC and OPC-CAC for normal-weight concrete. There is a gap in our knowledge of triple comparisons and lightweight cement composites which is filled by the current study. The use of OPC at up to 650 oC is recommended because it is the most common solution, its performance is similar to that of CAC, and it is cheaper than other solutions. Above 650 oC and up to 1000 oC, CAC is the only solution because it performs better than other cements. CSAC is not suitable for use at elevated temperatures because of its poor strength performance, even if it is the best solution from an environmental point of view. Sand replacement with perlite does not increase the strength performance under elevated temperatures, but its efficiency is different for various types of cement.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20100 - Civil engineering

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

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

Name of the periodical

Buildings

ISSN

2075-5309

e-ISSN

2075-5309

Volume of the periodical

13

Issue of the periodical within the volume

12

Country of publishing house

CH - SWITZERLAND

Number of pages

21

Pages from-to

2969

UT code for WoS article

001131397300001

EID of the result in the Scopus database

2-s2.0-85180551510