钢渣沥青砂浆动态模量试验及其主曲线研究
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摘要
为了获得细钢渣取代石灰岩细集料后沥青砂浆动态特性变化和更宽温频域下钢渣沥青砂浆的动态模量,根据AC-13石灰岩沥青混合料配合比去除粗集料影响得到石灰岩沥青砂浆配合比,应用等体积代换确定钢渣沥青砂浆级配,采用旋转压实成型沥青砂浆试件,并进行动态模量试验,测定不同温度和不同频率下沥青砂浆的动态模量及相位角,依赖时温等效原理计算、确定和分析钢渣沥青砂浆的动态模量主曲线和相位角主曲线。结果表明:在相同的沥青砂浆试件和温度下,动态模量随着频率的增大而增大,相位角整体变化趋势随之减小;在相同实验模式和高频下,沥青砂浆动态模量和相位角受集料的影响较小;在一定条件下,细钢渣的掺入提高了沥青砂浆的动态特性。
In order to obtain the dynamic characteristics of asphalt mortar after replacing fine limestone with fine steel slag,and the dynamic modulus of steel slag asphalt mortar in wider temperature and frequency domain,the effect of removing coarse aggregate based on the AC-13 limestone asphalt mixture ratio was obtained. Limestone asphalt mortar mix ratio,using equal volume substitution to determine the gradation of steel slag asphalt mortar. Rotation compaction was used to form asphalt mortar specimens and a dynamic modulus test was conducted to measure the dynamic modulus and phase angle of the asphalt mortar at different temperatures and frequencies. The dynamic modulus master curve and phase angle master curve of the steel slag asphalt mortar were calculated and determined based on the timetemperature equivalent principle. The results show that with the same asphalt mortar specimens and temperatures,the dynamic modulus increases with the increase of frequency,and the overall change trend of the phase angle decreases. Under the same experimental mode and high frequency,the dynamic modulus and phase angle of asphalt mortar have fewer effects from aggregate; under certain conditions,the dynamic characteristics of asphalt mortar are improved due to the addition of fine steel slag.
In order to obtain the dynamic characteristics of asphalt mortar after replacing fine limestone with fine steel slag,and the dynamic modulus of steel slag asphalt mortar in wider temperature and frequency domain,the effect of removing coarse aggregate based on the AC-13 limestone asphalt mixture ratio was obtained. Limestone asphalt mortar mix ratio,using equal volume substitution to determine the gradation of steel slag asphalt mortar. Rotation compaction was used to form asphalt mortar specimens and a dynamic modulus test was conducted to measure the dynamic modulus and phase angle of the asphalt mortar at different temperatures and frequencies. The dynamic modulus master curve and phase angle master curve of the steel slag asphalt mortar were calculated and determined based on the timetemperature equivalent principle. The results show that with the same asphalt mortar specimens and temperatures,the dynamic modulus increases with the increase of frequency,and the overall change trend of the phase angle decreases. Under the same experimental mode and high frequency,the dynamic modulus and phase angle of asphalt mortar have fewer effects from aggregate; under certain conditions,the dynamic characteristics of asphalt mortar are improved due to the addition of fine steel slag.
引文
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[2]中国废钢铁应用协会冶金渣开发利用工作委员会. 2013-2014年全国钢铁渣数据统计表[J].中国废钢铁,2015(1):36.
[3]刘瑛,方宏辉,卢丽君.钢渣处理与综合利用技术研究进展[J].化学工程与装备,2014(9):190-192.
[4]刘国威,朱李俊,金强,等.钢渣沥青混凝土研究进展[J].矿产综合利用,2016(2):11-16.
[5]柴轶凡,彭军,安胜利.钢渣综合利用及钢渣热闷技术概述[J].内蒙古科技大学学报,2012(3):250-253.
[6] Wang W,Sardans J,Lai D Y F,et al. Effects of steel slag application on greenhouse gas emissions and crop yield over multiple growing seasons in a subtropical paddy field in China[J]. Field Crops Research,2015,171:146-156.
[7] Topkaya Y,Sevin9 N,Günaydn A. Slag treatment at Kardemir integrated iron and steel works[J]. International Journal of Mineral Processing,2004,74(1):31-39.
[8] Santamaría-Vicario I,Rodríguez A,Junco C,et al. Durability behavior of steelmaking slag masonry mortars[J]. Materials&Design,2016,97:307-315.
[9] Grube2a I N,Bari2i8 I,Fucic A,et al. 5-Applications of steel slag in civil engineering:Worldwide research[J]. Characteristics&Uses of Steel Slag in Building Construction,2016:67-82.
[10] Goetz E R,Riefler R G. Performance of steel slag leach beds in acid mine drainage treatment[J]. Chemical Engineering Journal,2014,240(6):579-588.
[11]常明丰,张冬冬,刘勇,等.沥青砂浆的动态模量及其主曲线研究[J].公路交通科技,2016,33(5):28-32.
[12]赵延庆,吴剑,文健.沥青混合料动态模量及其主曲线的确定与分析[J].公路,2006(8):163-167.
[13]韦金城,崔世萍,胡家波.沥青混合料动态模量试验研究[J].建筑材料学报,2008,11(6):657-661.
[14]马翔,倪富健,陈荣生.沥青混合料动态模量试验及模型预估[J].中国公路学报,2008,21(3):35-39.
[15]李瑞霞,郝培文.布敦岩沥青混合料动态模量及主曲线研究[J].武汉理工大学学报,2011(10):42-45.
[16] Youl Z,Dai Q,Gurung B. Development and implementation of afinite element model for asphalt mixture top redict compressive complex moduliat low and intermediate temperatures:asphalt concrete simulation,modeling,and experimental characterization[C]. R. Lytton Symposium on Mechanics of Flexible Pavements,2005.
[17] Jr D W C,Pellinen T,Bonaquist R F. Hirsch model for estimating the modulus of asphalt concrete[J]. Asphalt Paving Technology:Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions,2003,72:97-121.
[18]马莉骍,黄俊峰.基于动态模量试验的沥青混合料老化性能研究[J].公路工程,2014,39(3):317-321.
[19] Liu G,Zhao Y,Zhou J,et al. Applicability of evaluation indices for asphalt and filler interaction ability[J]. Construction&Building Materials,2017,148:599-609.