Reinforcement of the Mechanical and Durability Performance of Cement-Based Materials with Multi-Walled Carbon Nanotubes

Yang, Hui-Qin; Yu, Hongqiang; Zhao, Xiaohui

doi:10.1166/jamr.2014.1195

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, CNTs can be used as reinforcement materials of cement composites. Previous studies showed that the addition of CNTs (especially MWCNTs) improved the mechanical properties [ 15 , 16 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] and durability [ 31 , 32 , 33 ] of cement composites.…”

Section: Introductionmentioning

confidence: 99%

“…Zou et al [ 30 ] reported that the use of MWCNTs significantly improved the elasticity modulus, flexural strength, and fracture energy of cement pastes. Yang et al [ 32 ] reported that the addition of MWCNTs increased the impermeability and abrasion resistance of cement composites. The addition of MWCNTs also efficiently improved the resistance to chloride ion penetration and sulfate attack [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical Properties and Durability of Ultra High Strength Concrete Incorporating Multi-Walled Carbon Nanotubes

Ouyang

2016

Materials

View full text Add to dashboard Cite

In this work, the effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the mechanical properties and durability of ultra high strength concrete (UHSC) is reported. First, the MWCNTs were dispersed by a nano sand-mill in the presence of a surfactant in water. The UHSC specimens were prepared with various amounts of MWCNTs, ranging from 0% to 0.15% by weight of cement (bwoc). Results indicated that use of an optimal percentage of MWCNTs (0.05% bwoc) caused a 4.63% increase in compressive strength and a 24.0% decrease in chloride diffusion coefficient of UHSC at 28 days curing. Moreover, the addition of MWCNTs also improved the flexural strength and deformation ability. Furthermore, a field-emission scanning electron microscopy (FE-SEM) was used to observe the dispersion of MWCNTs in the cement matrix and morphology of the hardened cement paste containing MWCNTs. FE-SEM observation revealed that MWCNTs were well dispersed in the matrix and no agglomerate was found and the reinforcing effect of MWCNTs on UHSC was thought to be pulling out and microcrack bridging of MWCNTs, which transferred the load in tension.

show abstract