Experimental investigation on strength and properties of natural fibre reinforced cement mortar

2020 ◽  
Author(s):  
M. Mathavan ◽  
N. Sakthieswaran ◽  
O. Ganesh Babu
Keyword(s):  
Experimental Investigation ◽  
Cement Mortar ◽  
Natural Fibre ◽  
Reinforced Cement

scholarly journals Preparation and piezoresistivity of carbon nanotube-coated sand reinforced cement mortar

2020 ◽  
Vol 9 (1) ◽  
pp. 1445-1455
Author(s):  
Song Gao ◽  
Jianlin Luo ◽  
Jigang Zhang ◽  
Fei Teng ◽  
Chao Liu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cement Mortar ◽  
Aqueous Suspension ◽  
Ac Impedance ◽  
Stress Sensitivity ◽  
Multiwall Carbon Nanotube ◽  
Impedance Technique ◽  
Reinforced Cement ◽  
Coated Sand ◽  
Mechanical Strengths

Abstract Water and sand were used as the medium of multiwall carbon nanotube (MCNT) and prepared MCNT aqueous suspension and MCNT suspension-coated sand, respectively; afterwards, they were introduced into cement mortar (MNT/CM, MNTSM), respectively. Next, mechanical strengths and piezoresistive properties (DC resistivities (ρ v), AC impedances (Z r)) under cyclic loadings (σ c) of two types of MNT/CM and MNTSM nanocomposites were investigated to explore the intrinsic and self-sensing behaviors. Results reveal that MCNT can be evenly and well-coated on sand, which favors to achieve its intrinsic self-sensing property. Although the fraction changes in ρ v and Z r under the same σ c of MNTSM are both lower than those of MNT/CM, the stress sensitivity of MNTSM is only −1.16%/MPa (DC resistivity), −1.55%/MPa (AC impedance); its sensing linearity and stability (2.53, 2.45%; 2.73, 2.67%) are superior to those of MNT/CM (4.94, 2.57%; 3.78, 2.96%). Piezoresistivity using AC impedance technique is helpful to acquire balanced sensing sensitivity and stability while applied as intrinsic sensors in infrastructure.

Experimental investigation on hydraulic fracturing in cement mortar with tensile stress

2021 ◽  
pp. 108058
Author(s):  
Hongwei Zhang ◽  
Zhenzhong Shen ◽  
Liqun Xu ◽  
Lei Gan ◽  
Zekai Ma ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Tensile Stress ◽  
Hydraulic Fracturing ◽  
Cement Mortar

Research on Anti-Cracking Performance of Polypropylene Fiber Reinforced Cement Mortar

2011 ◽  
Vol 189-193 ◽  
pp. 983-987 ◽  
Author(s):  
Hong Shen Xu ◽  
Yong Min Cao ◽  
Hong Ming Sun
Keyword(s):  
Theoretical Analysis ◽  
Critical Stress ◽  
Cement Mortar ◽  
Polypropylene Fiber ◽  
Fiber Reinforced ◽  
Cracking Performance ◽  
Reinforced Cement

Adding suitable quantity of polypropylene fiber is very effective for controlling plastic crack of cement mortar. During the experience stage, adding quantity of polypropylene fiber is 1.5 kg/m3, and crack rate of mortar is only 7.7%. Theoretical analysis is made for plastic crack mechanism of cement mortar, the results indicate that adding polypropylene fiber improves critical stress of crack expansion in mortar and notably reduces crack of cement mortar.

Sign in / Sign up

Export Citation Format

Share Document