Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Advances in Nano Research Volume 11, Number 4, October 2021 , pages 423-436 DOI: https://doi.org/10.12989/anr.2021.11.4.423 |
|
|
|
Influence of pozzolans on properties of cementitious materials: A review |
||
Rishav Garg, Rajni Garg and Nnabuk Okon Eddy
|
||
| Abstract | ||
| Use of additives/supplementary materials in partial substitution of cement is gaining widespread attention across the world due to the sustainability issue with production of cement. With their pozzolanic activity & filler effect, use of nano-pozzolans such as nano-silica has been proved as quite promising & cost-effective for use as supplementary cementitious materials. This study is aimed at highlighting the effect of partial substitution of cement/addition of various nano-pozzolans on the hydration, strength and microstructure of the cementitious materials. Further, the effect of incorporation of other pozzolans has also been discussed. Comparative account of pozzolanic activity of different pozzolans has also been critically analyzed. It has been found that the cement matrix gets improved in terms of its microstructure by partial substitution of cement/addition of pozzolan in appropriate amount resulting in enhancement of the bulk properties by consumption of portlandite. The improved compressive strength of cementitious materials not only results in enhancement of the durability but also the service life of the construction structures and results in reduction of the cost incurred in maintenance and repair. Thus, the cement demand can be decreased by the partial substitution of cement/addition of such materials. It will result in an ultimate reduction of the green-house effect and lead to sustainable development. | ||
| Key Words | ||
| cementitious materials; durability; nano-pozzolans; microstructure; strength | ||
| Address | ||
| Rishav Garg: Department of Civil Engineering, Galgotias College of Engineering and Technology, Greater Noida, Uttar Pradesh 201310, India Rajni Garg: Department of Chemistry, Rayat Bahra University, Mohali, Punjab, 140301, India Nnabuk Okon Eddy: Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria | ||