Saeed  Abdul Ali Jaber, 
    The Addition of Bentonite to Improve the Compaction Energy of Soil,
    Journal of Engineering and Applied Sciences,
    Volume 14,Issue 21,
    2019,
    Pages 7917-7921,
    ISSN 1816-949x,
    jeasci.2019.7917.7921,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2019.7917.7921)
    Abstract: The aim of the current study is to investigate the addition of 4, 8, 12 and 16% bentonite to the soil
in compaction to improve the strength of soil, standard Proctor test and modified Proctor test were used with
4, 8, 12 and 16% moisture. The soil used in this study was brought from the connecting road between Nasiriyah
and Souk Al-Shuyukh cities as a random sample from deferent depths. The research found a set of conclusions
such as bentonite content at 8 and 12% would rise the maximum dry density which leads to increase the
strength of soil in compaction process and the maximum dry density was (1.9 g/cm<sup>3</sup>) at the bentonite ratio (8%)
represents the optimal values of additives of bentonite percentage to the soil to improve its strength ability.
    Keywords: compactive energy;Bentonite;soil strength;dry density;improve;ability