Effect of Nanomaterials on Durability Properties of Free Cement Mortars

2021 ◽  
pp. 73-98
Author(s):  
Ghasan Fahim Huseien ◽  
Nur Hafizah A. Khalid ◽  
Jahangir Mirza
Keyword(s):  
Durability Properties ◽  
Cement Mortars

Effect of acrylic fibres geometry on physical, mechanical and durability properties of cement mortars

2012 ◽  
Vol 27 (1) ◽  
pp. 189-196 ◽  
Author(s):  
Luiz A. Pereira-de-Oliveira ◽  
João P. Castro-Gomes ◽  
Miguel C.S. Nepomuceno
Keyword(s):  
Durability Properties ◽  
Cement Mortars

Microstructure and durability properties of cement mortars containing nano-TiO2 and rice husk ash

2016 ◽  
Vol 114 ◽  
pp. 656-664 ◽  
Author(s):  
Ehsan Mohseni ◽  
Farzad Naseri ◽  
Ramin Amjadi ◽  
Mojdeh Mehrinejad Khotbehsara ◽  
Malek Mohammad Ranjbar
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Nano Tio2 ◽  
Durability Properties ◽  
Cement Mortars

Effect of Colloidal Nano-Silica on the Mechanical and Durability Performances of Mortar

2014 ◽  
Vol 629-630 ◽  
pp. 443-448 ◽  
Author(s):  
Hong Jian Du ◽  
Sze Dai Pang
Keyword(s):  
Compressive Strength ◽  
Drying Shrinkage ◽  
Pozzolanic Reaction ◽  
Nano Silica ◽  
Cement Ratio ◽  
Durability Properties ◽  
Cement Mortars ◽  
Water To Cement Ratio ◽  
Water Sorptivity ◽  
Mixing Water

s. The mechanical and durability properties of cement mortars with colloidal nanosilica (CNS) were investigated experimentally. Reference mortar with a low water-to-cement ratio of 0.30 was used in this study. The influence of CNS was evaluated by adding 0.5, 1.0, 1.5 and 2.0% of CNS by weight of cement. CNS was first stirred in the mixing water for 2 minutes before added to cement and sand. Superplasticizer was used to maintain the same flowability. Results showed that the compressive strength consistently increases with higher dosage of CNS at all the curing ages, due to both hydration acceleration and pozzolanic reaction. With the increase in CNS, the migration coefficient and water sorptivity consistently decreased; with 2% of CNS, the migration coefficient and water sorptivity were reduced by 45% and 30% respectively in comparison with the reference mortar. The improved durability could be explained by the reduction and refinement in the porosity, which can be attributed to nanofiller effect and pozzolanic reaction of nanosilica. Furthermore, the addition of CNS could reduce the drying shrinkage by densifying the microstructure in the cement paste, which has not been reported previously.

scholarly journals Effect of Nanosilica Particle Size on the Water Permeability, Abrasion Resistance, Drying Shrinkage, and Repair Work Properties of Cement Mortar Containing Nano-SiO2

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Sattawat Haruehansapong ◽  
Tawich Pulngern ◽  
Somchai Chucheepsakul
Keyword(s):  
Particle Size ◽  
Water Permeability ◽  
Abrasion Resistance ◽  
Cement Mortar ◽  
Drying Shrinkage ◽  
Particle Sizes ◽  
Repair Work ◽  
Durability Properties ◽  
Cement Mortars ◽  
Nanosilica Particle

This work presents the effect of nanosilica particle sizes on durability properties and repair work properties of cement mortar containing nanosilica (NS). Three different NS particle sizes of 12, 20, and 40 nm were used and compared with those of cement mortar without NS and cement mortar with silica fume (SF). Interesting results were obtained in which the particle size of NS affected directly the abrasion resistance and water permeability. NS with particle size of 40 nm is the optimum size and gave the highest abrasion resistance and water permeability. For repair work properties, cement mortars containing NS (12 and 20 nm) and SF experienced higher drying shrinkage than that of cement mortar without NS and then presented cracking behavior and debonding between the cement mortars and concrete substrate. Cement mortar containing 40 nm of NS gave the lowest drying shrinkage, the lowest crack number, and the highest adhesive strength. These results indicate that the particle size of NS affected not only the durability properties but also the repair work properties of cement mortar.

scholarly journals Retraction notice to “Microstructure and durability properties of cement mortars containing nano-TiO2 and rice husk ash” [JCBM 114 (2016) 656–664]

2021 ◽  
Vol 304 ◽  
pp. 124712
Author(s):  
Ehsan Mohseni ◽  
Farzad Naseri ◽  
Ramin Amjadi ◽  
Mojdeh Mehrinejad Khotbehsara ◽  
Malek Mohammad Ranjbar
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Nano Tio2 ◽  
Durability Properties ◽  
Cement Mortars ◽  
Retraction Notice

scholarly journals Influence of nano silica on the fresh, hardened and durability properties of self-cleaning white Portland cement mortars

2019 ◽  
Vol 20 (3) ◽  
pp. 270-275 ◽  
Author(s):  
Atta-ur-Rehmana ◽  
Jae-Suk Ryou ◽  
Sadam Hussain Jakhrani ◽  
Hong-Gi Kim ◽  
Jeong Bae Lee ◽  
...  
Keyword(s):  
Portland Cement ◽  
Nano Silica ◽  
Durability Properties ◽  
Cement Mortars ◽  
Self Cleaning ◽  
White Portland Cement
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