Poprawa właściwości zaprawy samopoziomującej przy użyciu kropek węglowych: synteza, charakteryzacja i mechanizmy

Zhao, Ping; Jiang, Yong; An, Hongna; Deng, Jierui; Jia, Lujun

doi:10.32047/CWB.2025.30.1.5

Artykuł - szczegóły

Tytuł artykułu

Poprawa właściwości zaprawy samopoziomującej przy użyciu kropek węglowych: synteza, charakteryzacja i mechanizmy

Autorzy

Zhao Ping , Jiang Yong , An Hongna , Deng Jierui , Jia Lujun

Wybrane pełne teksty z tego czasopisma

http://www.cementwapnobeton.pl/

Identyfikatory

DOI

10.32047/CWB.2025.30.1.5

Warianty tytułu

Enhancement of self-leveling mortar properties using carbon dots: synthesis, characterization, and mechanisms

Języki publikacji

PL EN

Abstrakty

Nanomateriały węglowe, takie jak nanorurki węglowe [CNT], grafen oraz tlenek grafenu [GO], były szeroko badane w kontekście poprawy właściwości materiałów cementowych. Niemniej jednak ich wysoki koszt, trudności związane z równomiernym rozproszeniem w matrycy oraz ograniczona kompatybilność z fazą cementową stanowią istotne bariery dla ich praktycznego zastosowania. Alternatywę stanowią kropki węglowe [CDs] – nowa klasa nanomateriałów węglowych – które dzięki niskiemu kosztowi, nietoksyczności, bardzo dobrej rozpuszczalności w wodzie oraz prostemu procesowi syntezy, wykazują duży potencjał aplikacyjny. W niniejszym badaniu przeanalizowano wpływ dodatku kropek węglowych na właściwości zaprawy samopoziomującej [SLM], ze szczególnym uwzględnieniem ciekłości, wytrzymałości na ściskanie i zginanie, skurczu oraz odporności na ścieranie. Kropki węglowe zostały zsyntetyzowane jednoetapową metodą hydrotermalną, a następnie wprowadzone do zaprawy w różnych dawkach. Uzyskane wyniki doświadczalne wykazały, że dodatek kropek węglowych istotnie poprawia ciekłość oraz właściwości mechaniczne zaprawy. Optymalna dawka, wynosząca 3o/ooo, skutkowała najwyższymi wartościami wytrzymałości na ściskanie i zginanie. Dodatkowo stwierdzono, że kropki węglowe efektywnie ograniczają skurcz oraz zwiększają odporność zaprawy na ścieranie. Analiza mikrostrukturalna wykazała, że obecność kropek węglowych sprzyja intensyfikacji procesu tworzenia żelu C-S-H, co prowadzi do powstania gęstszej i bardziej jednorodnej mikrostruktury matrycy cementowej. W efekcie notuje się znaczącą poprawę zarówno właściwości mechanicznych, jak i trwałości materiału. Podsumowując, przeprowadzone badania potwierdzają, że kropki węglowe stanowią ekonomiczny i zrównoważony dodatek do modyfikacji materiałów cementowych, oferując realną alternatywę dla droższych nanomateriałów węglowych.

Carbon-based nanomaterials, such as carbon nanotubes [CNTs], graphene, and graphene oxide [GO], have been widely investigated for enhancing the properties of cement-based materials. However, their high cost, dispersion challenges, and compatibility issues with cement matrices limit their practical applications. In contrast, carbon dots [CDs], a novel class of carbon-based nanomaterials, offer a promising alternative due to their low cost, non-toxicity, excellent water solubility, and facile synthesis. This study investigates the effects of CDs on the performance of self-leveling mortar [SLM], with a focus on fluidity, mechanical properties: compressive and flexural strengths, shrinkage, and abrasion resistance. CDs were synthesized via a one-step hydrothermal method and incorporated into SLM at varying dosages. The experimental results show that the addition of CDs significantly improves the fluidity and mechanical properties of SLM, with the optimal dosage [3o/ooo] yielding the highest compressive and flexural strengths. Furthermore, CDs effectively reduce the shrinkage and enhance the abrasion resistance of SLM. Microstructural analysis revealed that CDs promote the formation of calcium silicate hydrate C-S-H gel, leading to a denser and more stable matrix, which contributes to improved mechanical performance and durability. Overall, this study highlights that CDs are a cost-effective and sustainable additive for enhancing the performance of cement-based materials, offering a viable alternative to more expensive nanomaterials.

Słowa kluczowe

kropki węglowe zaprawa samopoziomująca właściwości mechaniczne skurcz mikrostruktura

carbon-dots self levelling mortar mechanical properties shrinkage microstructure

Wydawca

Fundacja Cement, Wapno, Beton

Czasopismo

Cement Wapno Beton

Rocznik

2025

Tom

R. 30, nr 1

Strony

75--90

Opis fizyczny

Bibliogr. 63 poz., il., tab.

Twórcy

autor

Zhao Ping

zhaoping20052006@163.com

School of Materials and Construction, Mianyang Polytechnic, Sichuan Mianyang

autor

Jiang Yong

School of Materials and Construction, Mianyang Polytechnic, Sichuan Mianyang
State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan, P. R. China

autor

An Hongna

School of Materials and Construction, Mianyang Polytechnic, Sichuan Mianyang
State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan, P. R. China

autor

Deng Jierui

School of Materials and Construction, Mianyang Polytechnic, Sichuan Mianyang

autor

Jia Lujun

82886496@qq.com

School of Materials and Construction, Mianyang Polytechnic, Sichuan Mianyang
State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan, P. R. China

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