Characterization of ultra-high-performance cementitious composite incorporating carbon nanotubes

Research output: Contribution to journalArticle

Abstract

Ultra-High-Performance Concrete (UHPC) is a type of concrete with unique mechanical and durability characteristics, developed to meet the global demand for extreme construction. Typically, UHPC is produced using customized mix design and subjected to special curing condition. Concrete is a brittle material in nature, where UHPC has its drawbacks in terms of lower tensile strength ratio and brittleness. Carbon nanotube (CNT) is a potential candidate to act as nano-reinforcement in UHPC matrix, to create a denser and a more ductile Ultra-High-Performance Cementitious Composite (UHPCC) system. The consistent dispersion of CNT in the cementititious matrix is a challenge due to their high aspect ratio and its agglomerating behavior. This paper presents on the fundamental UHPCC mix design which optimizes on its packing density with fewer constituent materials. The mechanical strength and microstructure characteristics of three types of UHPCC developed with CNT, which were produced with different dispersion methods are reported. It was found that stable CNT dispersion enhanced the microstructure characteristics of the UHPCC matrix, and achieved higher flexural strength (more than 60% higher) and marginally higher compressive strength, compared to control specimens without CNT.

Original languageEnglish
Pages (from-to)19-25
Number of pages7
JournalJurnal Teknologi
Volume80
Issue number2
DOIs
Publication statusPublished - 1 Mar 2018

Fingerprint

High performance concrete
Carbon nanotubes
Composite materials
Brittleness
Concretes
Microstructure
Bending strength
Compressive strength
Strength of materials
Curing
Large scale systems
Aspect ratio
Reinforcement
Durability
Tensile strength

Keywords

  • Carbon nanotubes (CNT)
  • Mechanical properties
  • Microstructure
  • Nano-engineered
  • Ultra-high-performance cementitious composites (UHPCC)

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Characterization of ultra-high-performance cementitious composite incorporating carbon nanotubes. / Lim, J. L.G.; Raman, Sudharshan Naidu; Hamid, Roszilah; Mohd. Zain, Muhammad Fauzi; Lai, F. C.

In: Jurnal Teknologi, Vol. 80, No. 2, 01.03.2018, p. 19-25.

Research output: Contribution to journalArticle

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