<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Cement materials have been commonly used in the building and construction industries. However, the process of cement manufacture has long been connected with high consumption of energy and adverse environmental impacts. In this study, in order to produce innovative green cement material that consumes lower energy, resources and is more eco-friendly, industrial waste by-product fly ash cenosphere (FAC) has been utilized as lightweight aggregate to replace cement by 73.3 %. Most research regarding lightweight cement materials with FAC has mainly paid attention to the influence of FAC and the reinforcement via fibre materials, but very few studies have been devoted to the incorporation of nano additives. Therefore, 0.05 %, 0.15 %, 0.45 % of carbon nanotubes (CNTs) and 0.2 %, and 1.0 % of nano silica (NS) were used to modify lightweight cement composite (LWCC). Experiments including flexural strength test, compressive strength test, and thermogravimetric analysis were performed to evaluate the mechanical behaviours and the hydration process of the produced LWCC. Based on the experimental outcomes, incorporating CNTs and NS can effectively contribute to enhancing both flexural and compressive strength, and facilitate cement hydration reaction.</p>
</abstract>

Cement materials have been commonly used in the building and construction industries. However, the process of cement manufacture has long been connected with high consumption of energy and adverse environmental impacts. In this study, in order to produce innovative green cement material that consumes lower energy, resources and is more eco-friendly, industrial waste by-product fly ash cenosphere (FAC) has been utilized as lightweight aggregate to replace cement by 73.3 %. Most research regarding lightweight cement materials with FAC has mainly paid attention to the influence of FAC and the reinforcement via fibre materials, but very few studies have been devoted to the incorporation of nano additives. Therefore, 0.05 %, 0.15 %, 0.45 % of carbon nanotubes (CNTs) and 0.2 %, and 1.0 % of nano silica (NS) were used to modify lightweight cement composite (LWCC). Experiments including flexural strength test, compressive strength test, and thermogravimetric analysis were performed to evaluate the mechanical behaviours and the hydration process of the produced LWCC. Based on the experimental outcomes, incorporating CNTs and NS can effectively contribute to enhancing both flexural and compressive strength, and facilitate cement hydration reaction.

Experimental Study on the Mechanical Properties of Green Lightweight Cement Composite Modified by Nano Additives

Department of Building Materials and Products, Faculty of Civil Engineering

Environmental and Climate Technologies

This work is licensed under the Creative Commons Attribution 4.0 International License.

Cement materials have been commonly used in the building and construction industries. However, the process of cement manufacture has long been connected with...

Experimental Study on the Mechanical Properties of Green Lightweight Cement Composite Modified by Nano Additives

Published Online: Dec 07, 2023

Page range: 878 - 888

Received: Mar 31, 2023

Accepted: Aug 09, 2023

DOI: https://doi.org/10.2478/rtuect-2023-0064

Keywords
Carbon nanotubes, compressive strength, fly ash cenospheres, flexural strength, nano silica, thermogravimetric analysis

© 2023 Yiying Du et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Experimental Study on the Mechanical Properties of Green Lightweight Cement Composite Modified by Nano Additives

Published Online: Dec 07, 2023

Page range: 878 - 888

Received: Mar 31, 2023

Accepted: Aug 09, 2023

DOI: https://doi.org/10.2478/rtuect-2023-0064

KeywordsCarbon nanotubes, compressive strength, fly ash cenospheres, flexural strength, nano silica, thermogravimetric analysis

© 2023 Yiying Du et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Carbon nanotubes, compressive strength, fly ash cenospheres, flexural strength, nano silica, thermogravimetric analysis