@article{Radwa Defalla Abdel Hafez, Raghda Osama Abd- Al Ftah, Khaled Abdelsamie_2022, title={A Different Approach for the Improvement of Green Mortar Behavior by using Nano Paper Waste with Nano Metakaolin}, url={http://thedesignengineering.com/index.php/DE/article/view/9144}, abstractNote={<p>In this research, the results were displayed on sustainable nanomaterials mixtures containing nano paper waste and nano metakaolin as a substitute for the Portland cement in this research.The Portland cement was replaced with varied ratios of nano paper waste and nano metakaolin such as (0%, 4%,8%, and 12 % by weight of cement), and The cement-to-water ratio was constant in all mortar mixes (W/C= 0.4).The results of compressive strength at 7 and 28 days and flexural strength at 28 days show that the nanomaterial’s positively affected the strength, and the results of&nbsp; nano- metakaolin were higher than that of nano paper waste, and therefore the best replacement rates were 8%, followed by 4%, and finally 12% for both materials. On the other hand, nano metakaolin with nano paper waste together at replacement by (12% NMK + 12% NPW) showed less shrinkage than others and this is due to the high pozzolanic reactivity of nanomaterials. The combination of&nbsp; nano metakaolin and nano paper waste improved the microstructure by increasing hydration volume and lowering the water in the cement matrix and this is clear in C-S-H decomposition.</p&gt;}, number={1}, journal={Design Engineering}, author={Radwa Defalla Abdel Hafez, Raghda Osama Abd- Al Ftah, Khaled Abdelsamie}, year={2022}, month={Feb.}, pages={1831-1851} }