Evaluation of the HMA performance using combined effects of marble waste dust filler and superpave aggregate gradation

IF 1.6 Q3 ENGINEERING, CIVIL Australian Journal of Civil Engineering Pub Date : 2020-12-07 DOI:10.1080/14488353.2020.1854942
Adamu Mulatu, Emer Tucay Quezon, O. Gudina
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Abstract

ABSTRACT During the fabrication of new products, a variety of wastes discharged and stored by causing harsh environmental problems. The marble processing plant is amongst the industrial sector that produces huge waste. Thus, the main purpose of this study is to evaluate the combined effects of marble waste dust filler and Superpave aggregate gradation on the performance of HMA. Based on the Marshall Mix design, seventy-two (72) specimens were produced from three below-restricted zone (BRZ) of Superpave gradation (BRZ4, BRZ5, & BRZ6) by using the 0.45 power chart. The design gradation obtained to be BRZ5 with 4.96% OBC with corresponding values 9.13 KN of stability, 2.96 mm of flow, 73.51% of VFA, 15.73% of VMA, 2.308 gm/cm3, of bulk density and 4% of air void. The crushed stone dust filler was partially replaced by Marble Waste Dust filler (under No. 200 sieve) at replacement rate of (1%, 1.5, 2, 2.5, 3, 3.5, 4, 4.5 and 5%) by keeping design gradation and OBC constant. The test showed satisfactory results. The Marshall mix design parameters of all mixtures are within specification limit under international and local specifications. Marble waste dust filler when blended with a BRZ of Superpave gradation indicated a substantial effect on Marshall stability with 10.18 KN value at 3% MWD filler content.
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利用大理石废料粉尘填料和超级路面集料级配的联合作用评价HMA性能
在新产品的制造过程中,各种废物的排放和储存造成了恶劣的环境问题。大理石加工厂是产生大量废物的工业部门之一。因此,本研究的主要目的是评价大理石废尘填料和Superpave骨料级配对HMA性能的综合影响。基于Marshall Mix设计,采用0.45功率图从Superpave级配的BRZ4、BRZ5、BRZ6三个限下区(BRZ)中提取72个试件。得到的设计级配为BRZ5, OBC为4.96%,稳定性9.13 KN,流量2.96 mm, VFA为73.51%,VMA为15.73%,容重2.308 gm/cm3,空隙率为4%。在保持设计级配和OBC不变的情况下,将石粉填料部分替换为大理石废尘填料(200号筛下),替换率分别为(1%、1.5、2、2.5、3、3.5、4、4.5、5%)。试验结果令人满意。所有混合物的马歇尔混合设计参数均在国际和国内规范的规格范围内。掺加Superpave级配BRZ的大理石废尘填料在掺量为3%时,对Marshall稳定性有显著影响,其值为10.18 KN。
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来源期刊
CiteScore
3.90
自引率
7.70%
发文量
31
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