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Content
Volume 23 (2024)
Volume 23, Issue 2
Pg 101 - 131 (December 2024)
Volume 23, Issue 1
Pg 1 - 100 (June 2024)
Volume 22 (2023)
Volume 22, Issue 2
Pg 85 - 140 (July-Dec 2023)
Volume 22, Issue 1
Pg 1 - 83 (June 2023)
Volume 21 (2022)
Volume 21,
Pg 1 - 34 (June 2022)
Volume 20 (2021)
Volume 20, Issue 2
Pg 73 - 111 (December 2021)
Volume 20, Issue 1
Pg 1 - 71 (June 2021)
Volume 19 (2020)
Volume 19, Issue 2
Pg 53 - 98 (December 2020)
Volume 19, Issue 1
Pg 1 - 52 (June 2020)
Volume 18 (2019)
Volume 18, Issue 2
Pg 55 - 89 (December 2019)
Volume 18, Issue 1
Pg 1 - 53 (June 2019)
Volume 17 (2018)
Volume 17, Issue 2
Pg 79 - 110 (August 2018)
Volume 17 (2018)
Volume 17, Issue 2
Pg 79 - 110 (December 2018)
Volume 17, Issue 1
Pg 1 - 77 (June 2018)
Volume 16 (2017)
Volume 16, Issue 3
Pg 53 - 98 (December 2017)
Volume 16, Issue 1 - 2
Pg 1 - 52 (August 2017)
Volume 15 (2016)
Volume 15, Issue 4
Pg 189 - 261 (October 2016)
Volume 15, Issue 2-3
Pg 93 - 187 (July 2016)
Volume 15, Issue 1
Pg 1 - 92 (January 2016)
Volume 14 (2015)
Volume 14, Issue 2
Pg 79 - 150 (October 2015)
Volume 14, Issue 1
Pg 1 - 78 (July 2015)
Volume 13 (2015)
Volume 13, Issue 2
Pg 129 - 243 (April 2015)
Volume 13, Issue 1
Pg 1 - 128 (January 2015)
Volume 12 (2014)
Volume 12, Issue 2
Pg 103 - 209 (October 2014)
Volume 12, Issue 1
Pg 1 - 102 (July 2014)
Volume 11 (2014)
Volume 11, Issue 2
Pg 73 - 164 (April 2014)
Volume 11, Issue 1
Pg 1 - 71 (January 2014)
Volume 10 (2013)
Volume 10, Issue 2
Pg 67 - 118 (October 2013)
Volume 10, Issue 1
Pg 1 - 65 (July 2013)
Volume 9 (2013)
Volume 9, Issue 2
Pg 77 - 150 (April 2013)
Volume 9, Issue 1
Pg 1 - 76 (January 2013)
Volume 8 (2012)
Volume 8, Issue 2
Pg 75 - 169 (October 2012)
Volume 8, Issue 1
Pg 1 - 74 (July 2012)
Volume 7 (2012)
Volume 7, Issue 2
Pg 71 - 146 (April 2012)
Volume 7, Issue 1
Pg 1 - 70 (January 2012)
Volume 6 (2011)
Volume 6, Issue 2
Pg 83 - 155 (October 2011)
Volume 6, Issue 1
Pg 1 - 82 (July 2011)
Volume 5 (2011)
Volume 5, Issue 2
Pg 77 - 149 (April 2011)
Volume 5, Issue 1
Pg 1 - 75 (January 2011)
Volume 4 (2010)
Volume 4, Issue 2
Pg 81 - 165 (October 2010)
Volume 4, Issue 1
Pg 1 - 80 (July 2010)
Volume 3 (2010)
Volume 3, Issue 2
Pg 107 - 199 (April 2010)
Volume 3, Issue 1
Pg 1 - 106 (January 2010)
Volume 2 (2009)
Volume 2, Issue 2
Pg 109 - 218 (October 2009)
Volume 2, Issue 1
Pg 1 - 108 (July 2009)
Volume 1 (2009)
Volume 1, Issue 2
Pg 105 - 211 (April 2009)
Volume 1, Issue 1
Pg 1 - 103 (January 2009)
Categories
Computer Science and Artificial Intelligence
Engineering and Sciences
Materials Engineering
Mathematics and Statistics
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Notice:
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Notice:
All new articles and volumes will be published only on our new website —
www.pphmjopenaccess.com
International Journal of Materials Engineering and Technology
International Journal of Materials Engineering and Technology
Volume 5, Issue 2, Pages 101 - 114 (April 2011)
THE EVALUATION OF THE ADDITION OF PHOSPHATIC CLAY IN CEMENT PASTE AND CONCRETE
Mahir Dham, Bjorn Birgisson and Andrew Boyd
Abstract:
Phosphatic clay is a by-product of the phosphate strip mining industry, and disposal is particularly a problem in Florida, USA. This waste material occupies about 100,000 acres of land which could be utilized for other causes. Thus, its potential utilization as a supplementary cementing material added to the cement paste matrix of concrete to produce higher strength would be beneficial for both the mining and construction industries. The waste clay contains calcium montmorillonite, which should react pozzolanically with the calcium hydroxide produced from the hydration reactions to produce additional C-S-H, the building block of concrete systems, and thus enhancing the mechanical properties of cement paste and concrete. The effects of phosphatic clay addition on the bulk properties of cement paste and concrete are investigated, and it is shown that moderate additions (5% replacement of cement by mass) can indeed produce a significant increase in strength. The effect of the modified paste on the interfacial transition zone in concrete is also observed.
Keywords and phrases:
phosphatic clay, waste material in concrete, modification of concrete, interfacial transition zone.
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P-ISSN: 0975-0444
E-ISSN: 2584-0339
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