Characterizations of New Cement Compositions

**6**

2001.

*Cement Industry - Optimization, Characterization and Sustainable Application*

health in Ewekoro Local Government Area, South-Western Nigeria," *Int. J.* 

[9] Y. Askar, P. Jago, M. M. Mourad, and D. Huisingh, "The cement industry in Egypt: Challenges and innovative cleaner production solutions," in *Knowledge Collaboration & Learning for Sustainable Innovation: 14th European Roundtable on Sustainable Consumption and Production (ERSCP) conference and the 6th Environmental Management for Sustainable Universities (EMSU) conference, Delft, The Netherland*, 2010.

[10] F. A. Rodrigues and I. Joekes, "Cement industry: sustainability, challenges and perspectives," *Environ. Chem. Lett.*, vol. 9, no. 2, pp. 151-166,

2011.

*Environ. Stud.*, vol. 69, no. 6,

pp. 934-945, 2012.

[1] T. Selim and A. Salem, "Global cement industry: Competitive and institutional dimensions," 2010.

[2] N. Martin, M. D. Levine, L. Price, and E. Worrell, "Efficient use of energy utilizing high technology: An assessment of energy use in industry and buildings," *London World Energy* 

[3] C. A. Hendriks, E. Worrell, D. De Jager, K. Blok, and P. Riemer, "Emission reduction of greenhouse gases from the cement industry," in *Proceedings of the fourth international conference on greenhouse gas control technologies*, 1998,

[4] C. Chen, G. Habert, Y. Bouzidi, and A. Jullien, "Environmental impact of cement production: detail of the different processes and cement plant variability evaluation," *J. Clean. Prod.*, vol. 18, no. 5, pp. 478-485, 2010.

[5] J. Li, P. Tharakan, D. Macdonald, and X. Liang, "Technological, economic and financial prospects of carbon dioxide capture in the cement industry," *Energy Policy*, vol. 61,

[6] E. Worrell, L. Price, N. Martin, C. Hendriks, and L. O. Meida, "Carbon dioxide emissions from the global cement industry," *Annu. Rev. energy Environ.*, vol. 26, no. 1, pp. 303-329,

[7] A. M. Al-Omran, S. E. El-Maghraby, E. A. Nadeem, A. M. El-Eter, and S. M. I. Al-Qahtani, "Impact of cement dust on some soil properties around the cement factory in Al-Hasa Oasis, Saudi Arabia," *Am. J Agric Env. Sci*, vol. 11, no.

[8] O. Oguntoke, A. E. Awanu, and H. J. Annegarn, "Impact of cement factory operations on air quality and human

pp. 1377-1387, 2013.

6, pp. 840-846, 2011.

*Counc.*, 1995.

**References**

pp. 939-944.

**9**

concrete.

**1. Introduction**

**Chapter 2**

**Abstract**

with Nano Cement

Compressive Strength of Concrete

*Jemimah Carmichael Milton and Prince Arulraj Gnanaraj*

Nano technology plays a very vital role in all the areas of research. The incorporation of nano materials in concrete offers many advantages and improves the workability, the strength and durability properties of concrete. In this study an attempt has been made to carry out an experimental investigation on concrete in which cement was replaced with nano sized cement. Ordinary Portland cement of 53 grade was ground in a ball grinding mill to produce nano cement. The characterization of nano cement was studied using Scanning Electron Microscope (SEM), Brunauer Emmett–Teller (BET), Energy Dispersive X ray microanalysis (EDAX) and Fourier Transform Infrared Spectroscopy (FTIR). From the characterization studies, it was confirmed that particles were converted to nano size, the specific surface area increased and the chemical composition remained almost the same. The properties of cement paste with and without nano cement were found. For the experimental study, cement was replaced with 10%, 20%, 30%, 40% and 50% of nano cement. Cement mortar of ratio 1:3 and concrete of grades M20, M30, M40 and M50 were used. Compressive strength of cement mortar and concrete with different percentages of nano cement was found. The cement mortar was also subjected to micro structural study. It was found that the strength increased even up to the replacement level of 50%. Further increase in the replacement is not possible since the addition of nano cement reduces the initial and final setting time of cement paste. At 50% replacement level, the initial setting time got reduced to 30 minutes which the least permitted value as per IS 12269: 2013. The increase in strength was due to the fact that nano cement acts not only as a filler material but also the reactivity increased due to the higher specific surface area. The SEM image shows the formation of additional C-S-H gel. The percentage increase in compressive strength was found to increase up to 32%. The workability of concrete with nano cement was found to be significantly more than that of the normal cement

**Keywords:** compressive strength, nano cement, normal cement concrete,

Fourier transform infrared spectroscopy (FTIR)

scanning electron microscope (SEM), energy dispersive X ray microanalysis (EDAX),

Nano technology is a new emerging area in field of engineering. Development of nanotechnology in the field of material science and evolution of advanced instrumentation have paved way for application of nanotechnology in the construction field. Incorporation of nano sized particles in cement composites makes a significant

## **Chapter 2**
