Investigation of Properties of Asphalt Concrete Containing Boron Waste as Mineral Filler

Abstract

During the manufacture of compounds in the boron mining industry a large quantity of waste boron is produced which has detrimental effects on the environment. Large areas have to be allocated for the disposal of this waste. Today with an increase in infrastructure construction, more efficient use of the existing sources of raw materials has become an obligation and this involves the recycling of various waste materials. Road construction requires a significant amount of raw materials and it is possible that substantial amounts of boron-containing waste materials can be recycled in these applications. This study investigates the usability of boron wastes as filler in asphalt concrete. For this purpose, asphalt concrete samples were produced using mineral fillers containing 4%, 5%, 6%, 7% and 8% boron waste as well as a 6% limestone filler (6%L) as the control sample. The Marshall design, mechanical immersion and Marshall stability test after a freeze-thaw cycle and indirect tensile stiffness modulus (ITSM) test were performed for each of the series. The results of this experimental study showed that boron waste can be used in medium and low trafficked asphalt concrete pavements wearing courses as filler.

Investigation of boron waste usage in civil engineering applications

“…Gürer and Selman (2016) [38] carried out a Marshall design using boron waste fillers in the range of 4-8% by weight, and the conclusions were compared with the results of the limestone-based sample. The best values were obtained as a result of the use of boron waste filler at the rate of 5.7%.…”

“…It is hoped that this study will shed light on the researches to be carried out by evaluating the boron minerals and wastes in civil engineering applications. Production of gamma ray shielding material Borogypsum Colemanite concentrator waste [10] Plaster material Calcined borax waste 2009 [11] Artificial lightweight aggregates Sieve boron-containing waste Dewatering boron-containing waste 2011 [13] Pozzolanic material in concrete Boron waste found in Kırka 2012 [14] Production of cement Colemanite concentrator waste 2013 [15] Building materials Boron waste found in Emet [16] Bricks Boron pond waste found in Kırka [17] Filler material in asphalt concrete Borogypsum [36] Asphalt mixtures Colemanite waste [37] Subbase layer of the road pavement Borogypsum [43] Production of cement Boron waste found in Kırka 2014 [1] Radiation impermeability properties of mortars Colemanite waste [18] Cement mortars Calcined borogypsum Uncalcined borogypsum 2015 [19] Production of belite cement Boron waste found in Kırka 2016 [21] Insulation materials Colemanite waste [22] Production of cement Colemanite concentrator waste [23] Asphalt concrete pavements Boron waste found in Kırka [38] Road base material Borax waste [44] Cement mortars Boron derivative waste 2017 [24] Soil stabilization Slime waste [45] Ceramic wall and floor tiles Boron-rich mining wastes 2018 [25] Cement mortars Borogypsum Borax waste [26] Dynamic properties of kaolinite and montmorillonite clays Pulverized boron waste found in Kırka [46] Early strength of lightweight concrete Tincal waste 2019 [27] Pumice bricks Boron waste found in Kırka [28] Bricks Boron waste found in Emet [29] Cement mortars Colemanite waste powder [30] Radiation shielding material Borogypsum [31] Cement mortars Borogypsum [32] Asphalt concrete production Crushed boron waste found in Kırka [40] Lightweight concrete Boron waste found in Kırka 2020…”

Investigation of nano ulexite mineral effects on mechanical behaviour of warm mix asphalt pavements

“…In another study, properties of asphalt concrete containing boron residues as mineral filler were investigated. It was concluded that the boron residue can be used in asphalt pavements subjected to medium and low-traffic [26]. Based on this background information, boron minerals, abundant in Turkey holding the majority of the world's boron reserves, were added in this study to the foamed warm mixture asphalt at varying ratios in submicron dimensions.…”

Investigation of Aluminum Dross as a Potential Asphalt Filler

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There is a great concern about utilizing different waste materials all over the world. Stockpiling in landfills is not a final solution, therefore researchers try to find alternative methods to utilize these materials [1][2][3][4][5]. One potential area may be road construction.

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