{"title":"Utilization of Volcanic Tuffs as Construction Materials","authors":"Z. Abu-Hamatteh","doi":"10.48103/jjeci242019","DOIUrl":"https://doi.org/10.48103/jjeci242019","url":null,"abstract":"The current study examines the possibility of utilizing the Jordanian volcanic tuff aggregates as a source of many\u0000construction materials. Different mixtures were prepared by replacing the commonly used normal aggregate with\u0000volcanic tuffs aggregate to determine the best mixing proportion with similar size in different ratios as 0, 25, 50, 75\u0000and 100%. The impacts of this replacement on brick’s compression strength, dry weight and water absorption,\u0000transverse strength, absorption and weight of terrazzo tiles, loss Anglos and CBR values have been examined\u0000and evaluated. The results revealed an improvement in compressive strength of bricks at a replacement ratio of\u000025%, with concomitant reduction at higher replacement ratios, while water absorption increased as the ratio of tuff\u0000increases. Transverse strength of terrazzo tiles was recorded as 6.08, 5.78, 5.78, 5.21 and 5.19 MPa at\u0000substitution ratios of 0, 25, 50, 75 and 100%, respectively. Utilization of volcanic tuffs resulted in a significant\u0000reduction in the dry weight of bricks and terrazzo provided lightweight material. CBR test indicated that this\u0000material can be used successfully in foundations and as a sub-base material. The obtained results buttressed the\u0000benefit of utilization of natural volcanic tuffs as construction materials","PeriodicalId":127416,"journal":{"name":"Volume 2 issue 1","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126442001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimizing the Performance of Pilot Vacuum Belt Filter (VBF) for P2O5\u0000Reduction of Jordanian Phosphogypsum (PG)","authors":"Mohammed Aliedeh*","doi":"10.48103/jjeci222019","DOIUrl":"https://doi.org/10.48103/jjeci222019","url":null,"abstract":"Inventing new ways to recycle and reuse the accumulated byproducts is the most pressing and daunting challenge facing\u0000future process engineers. Millions of tonnes of Phosphogypsum (PG) is stacked in Jordan and worldwide every year.\u0000Numerous PG laboratory-scale beneficiation methods are already developed. This research is the first in moving PG\u0000Beneficiation methods from laboratory scale to pilot-scale using pilot Vacuum Belt Filter (VBF) to clean PG. In this research,\u0000VBF Pilot equipment is designed, constructed, troubleshooted and operated. This pilot study affirmed the difficulty in\u0000controlling the process input parameters in pilot VBF when compared with batch filtration. Full factorial (23\u0000) experimental study\u0000is conducted to study the effect of number of washings, number of passes, and acid concentration using sulfuric solutions on\u0000PG P2O5 content reduction. The three studied parameters showed a significant effect and their interaction was significant and\u0000contribute significantly to a considerable reduction in PG P2O5 content. The Pilot VBF was successfully operated to achieve\u0000an acceptable reduction of PG P2O5 content. In this novel pilot VBF research, numerous process insights were practically\u0000gained that significantly helped in optimizing VBF performance in reducing P2O5 content in PG.","PeriodicalId":127416,"journal":{"name":"Volume 2 issue 1","volume":"11 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114358198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}