Enhancing Lime-Based Mortars with Multiwalled Carbon Nanotubes — Composites for Historic Building Restoration: Mechanical, Thermal, and Hygric Performance Analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00383589" target="_blank" >RIV/68407700:21110/25:00383589 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3390/jcs9060266" target="_blank" >https://doi.org/10.3390/jcs9060266</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/jcs9060266" target="_blank" >10.3390/jcs9060266</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhancing Lime-Based Mortars with Multiwalled Carbon Nanotubes — Composites for Historic Building Restoration: Mechanical, Thermal, and Hygric Performance Analysis

Popis výsledku v původním jazyce

The use of binders in construction dates back to antiquity, with lime-based materials historically playing a significant role. However, the 20th century brought the wide-spread replacement of lime with Portland cement (PC), for its superior mechanical strength, durability, and faster setting time. Despite these advantages, the restoration of historic masonry structures has revealed the incompatibility of PC with traditional materials, leading to damage due to increased brittleness, stiffness, and reduced per-meability. Consequently, lime mortars remain the preferred choice for heritage con-servation. To enhance their durability while maintaining compatibility with historic materials, the incorporation of carbon-based nanoparticles has gained attention. This study investigated the impact of the carbon nanotubes (CNTs) additive on two types of lime-based mortars, calcium lime (CL) and hydraulic lime (HL), evaluating structural and mechanical properties, heat transport characteristics, and hygric properties after modification by CNTs with dosages of 0.1%, 0.3%, and 0.5% binder weight. Incorpora-tion of CNTs into CL mortar resulted in an increase in mechanical strength and slight reduction in heat transport and water absorption due to changes in porosity. The addi-tion of CNTs into HL mortars reduced porosity, pore size distribution, and other de-pending characteristics. The utilisation of CNTs as an additive in the investigated lime-based composites has been identified as a potentially effective approach for the reinforcement and functionalisation of these composite materials, as they exhibited enhanced mechanical resistance while preserving their other engineering properties, making them well suited for use as compatible mortars in building heritage repairs.

Název v anglickém jazyce

Enhancing Lime-Based Mortars with Multiwalled Carbon Nanotubes — Composites for Historic Building Restoration: Mechanical, Thermal, and Hygric Performance Analysis

Popis výsledku anglicky

The use of binders in construction dates back to antiquity, with lime-based materials historically playing a significant role. However, the 20th century brought the wide-spread replacement of lime with Portland cement (PC), for its superior mechanical strength, durability, and faster setting time. Despite these advantages, the restoration of historic masonry structures has revealed the incompatibility of PC with traditional materials, leading to damage due to increased brittleness, stiffness, and reduced per-meability. Consequently, lime mortars remain the preferred choice for heritage con-servation. To enhance their durability while maintaining compatibility with historic materials, the incorporation of carbon-based nanoparticles has gained attention. This study investigated the impact of the carbon nanotubes (CNTs) additive on two types of lime-based mortars, calcium lime (CL) and hydraulic lime (HL), evaluating structural and mechanical properties, heat transport characteristics, and hygric properties after modification by CNTs with dosages of 0.1%, 0.3%, and 0.5% binder weight. Incorpora-tion of CNTs into CL mortar resulted in an increase in mechanical strength and slight reduction in heat transport and water absorption due to changes in porosity. The addi-tion of CNTs into HL mortars reduced porosity, pore size distribution, and other de-pending characteristics. The utilisation of CNTs as an additive in the investigated lime-based composites has been identified as a potentially effective approach for the reinforcement and functionalisation of these composite materials, as they exhibited enhanced mechanical resistance while preserving their other engineering properties, making them well suited for use as compatible mortars in building heritage repairs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/GA25-15998S" target="_blank" >GA25-15998S: Komplexní výzkum ekologicky efektivních malt pro udržitelné opravy povrchových vrstev historických budov: vliv přírodních organických přísad a vláken</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Composites Science

ISSN

2504-477X

e-ISSN

2504-477X

Svazek periodika

9

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

20

Strana od-do

—

Kód UT WoS článku

001516784400001

EID výsledku v databázi Scopus

2-s2.0-105009120224