@article{HASSAN_TAHER_ALYOUSIFY_2021, title={EFFECT OF GRAVEL DUST AND LIMESTONE DUST ON GEOTECHNICAL PROPERTIES OF CLAYEY SOIL}, volume={23}, url={https://journal.uod.ac/index.php/uodjournal/article/view/924}, DOI={10.26682/csjuod.2020.23.2.16}, abstractNote={<p>Gravel dust and limestone dust are types of solid waste materials that are obtained from the crusher <br>plant. These materials are dumped-off in high amount causing a negative impact on the environment and <br>creating serious hazards on health. As the construction activities are increased in developing countries, the <br>demand of crushed gravel and crushed limestone for roads, airfields, railway ballast, buildings and <br>concrete work are increased. This study attempted to investigate the effect of gravel dust and limestone <br>dust on geotechnical properties of clayey soil. Testing program including Atterberg limits, compaction,<br>CBR and free swell tests, were performed on clay with the dust at varying amounts (10, 20, 30 and 40%). <br>The results showed that the Atterberg limits of clay decrease in proportion to increases in the amount of <br>dust. The increase in gravel dust contents decreased the compaction characteristics of clay. However, the <br>MDD increased and OMC decreased with increase in limestone dust contents. A series of soaked CBR <br>tests were conducted on the clay-dust mixtures of gravel dust and limestone dust. The dust was mixed with <br>the clay of different weight percentages. The results showed a general increase in the CBR value of clay <br>with the addition of dust. The CBR value increased gradually with the gravel dust content. The maximum <br>CBR was obtained at optimum limestone dust content, approximately 20%. Swelling percentages <br>decreased gradually with the dust content. The tests results revealed that it is possible to use gravel dust <br>and limestone dust for improving the properties of clayey soil.</p&gt;}, number={2}, journal={Journal of Duhok University}, author={HASSAN, HUSSEIN JALAL ASWAD and TAHER, SHAAFAN ABDULLAH and ALYOUSIFY, SHEYAN}, year={2021}, month={Jan.}, pages={194-205} }