Impact of oxidized carbon nanotubes on the mechanical, thermal, and hygric properties of Portland cement- and magnesium oxychloride cement-based mortars: A route to advanced building composites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43931781" target="_blank" >RIV/60461373:22310/25:43931781 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/25:00383811

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2214509525007004#ack0005" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2214509525007004#ack0005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cscm.2025.e04902" target="_blank" >10.1016/j.cscm.2025.e04902</a>

Result language

angličtina

Original language name

Impact of oxidized carbon nanotubes on the mechanical, thermal, and hygric properties of Portland cement- and magnesium oxychloride cement-based mortars: A route to advanced building composites

Original language description

Carbon nanotubes (CNTs) have gained attention as nano-reinforcement for cementitious materials due to their exceptional mechanical, thermal, and self-sensing properties. While extensively studied in Portland cement (PC) composites, their application in magnesium oxychloride cement (MOC) remains underexplored. However, challenges such as CNTs agglomeration and MOC&apos;s moisture susceptibility limit their effectiveness. This study investigates the impact of oxidized multi-walled carbon nanotubes (CNTox) on the mechanical strength, durability, and water resistance of MOC, with PC composites included for comparison. Two sets of PC- and MOC-based samples were prepared and analyzed in detail, focusing on elemental composition, phase composition, fracture surface microstructure, mechanical properties, thermal, and hygric properties. The results indicate that low CNTox concentrations enhance mechanical strength and retard water ingress. In MOC composites containing 0.1 wt% of CNTox, an 8.4 % increase in compressive strength, a 14.0 % enhancement in flexural strength, and a 0.5 % increase in Young&apos;s modulus were recorded. In PC-based composites, the addition of CNTox led to an improvement in flexural strength by 10.6–20.0 %, while the maximum compressive strength increased by up to 50 % in the composite with 0.05 wt% of CNTox. Thermal conductivity and heat storage increased in all composites containing CNTox. Furthermore, the moisture resistance of CNTox-reinforced MOC composites improved by approximately 1.9–21.4 % compared to the control mix. The results highlight the potential of CNTox as an effective nanoadditive for enhancing the properties of cement-based construction materials. © 2025 The Authors

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Case Studies in Construction Materials

ISSN

2214-5095

e-ISSN

2214-5095

Volume of the periodical

22

Issue of the periodical within the volume

červenec

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

16

Pages from-to

nestránkováno

UT code for WoS article

001509850100003

EID of the result in the Scopus database

2-s2.0-105007712964