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An Investigation on Mechanical Characteristics of Carbon Nanomaterials Used in Cementitious Composites

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Handbook of Green and Sustainable Nanotechnology

Abstract

Ongoing rapid development in many places worldwide raises concerns about negative CO2 emissions. An effort was made by building industries to reduce CO2 emissions by producing less clinker-based modified cement. In the construction industry, this type of cement provides adequate strength and durability. Various nanoparticles embedded in cement, on the other hand, have sparked huge interest in civil engineering as a means of achieving sustainability goals. Additionally, important yet hidden effects of various nanomaterials whether it be strength, durability, and workability of the suggested enhanced concretes/mortar were investigated. Even at very low concentrations (less than 0.08% by weight of cement), most carbon-based nanoreinforcers exhibit considerable improvements in flexural and compressive strength (up to 100%) and durability (up to 80% greater acid resistance). A denser cement matrix is the result of chemical, rather than physical, interactions between nanomaterials and C-S-H paste (C-S-H). This chapter presents a detailed overview of many widely utilized carbon nanomaterials used in cementitious composites. It discusses the common weight percentages employed in mixes by numerous researchers in the field and evaluates the mechanical characteristics of these nanomaterials when applied.

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Abbreviations

AFM:

Atomic force microscopy

Aft:

Ettringite

Bwoc:

By weight of cement

CDs:

Carbon dots

CH:

Calcium hydroxide

CHM:

Cement hybrid material

CNCs:

Cementitious nanocomposites

CNDs:

Carbon nanodiamonds

CNFs:

Carbon nanofibers

CNHs:

Carbon nanohorns

CNMs:

Carbon-based nanomaterials

CNTs:

Carbon nanotubes

C-S-H:

Calcium-silicate-hydrate

CVD:

Chemical vapor deposition

FCNCs:

Fly ash blended cementitious nanocomposites

FCNT-FCMs:

Functionalized carbon nanotubes-fly ash blended cement mortars

FT-IR:

Fourier transform infrared

GNPs:

Graphite nanoplatelets

GO:

Graphene oxide

GO-FCMs:

Graphene oxide-fly ash blended cement mortars

GON:

Graphene oxide nanoplatelets

GONPs:

Graphene oxide nanoplatelets

MLG:

Multilayer graphene

MWCNTs:

Multiwalled carbon nanotubes

OPC:

Ordinary Portland cement

rGO:

Reduced graphene oxide

SEM:

Scanning electron microscopy

SWCNTs:

Single-walled carbon nanotubes

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Bhatrola, K., Maurya, S.K., Budhalakoti, B., Kothiyal, N.C. (2023). An Investigation on Mechanical Characteristics of Carbon Nanomaterials Used in Cementitious Composites. In: Shanker, U., Hussain, C.M., Rani, M. (eds) Handbook of Green and Sustainable Nanotechnology. Springer, Cham. https://doi.org/10.1007/978-3-031-16101-8_93

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