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首页> 美国卫生研究院文献>Materials >Effect of Addition of Rubber Granulate and Type of Modified Binder on the Viscoelastic Properties of Stone Mastic Asphalt Reducing Tire/Road Noise (SMA LA)
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Effect of Addition of Rubber Granulate and Type of Modified Binder on the Viscoelastic Properties of Stone Mastic Asphalt Reducing Tire/Road Noise (SMA LA)

机译：橡胶颗粒的效果及改性粘合剂型对石咀嚼沥青降低轮胎/道路噪声（SMALA）的粘弹性特性

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The use of rubber granulate in the composition of asphalt mixtures, as well as the use of poroelastic layers, is indicated by many research centers as a factor with a positive effect on tire/road noise reduction. Attention is however paid to their lower structural durability compared to asphalt concrete (AC) or stone mastic asphalt (SMA). Stone mastic asphalt reducing tire/road noise (SMA LA) layers have also been recently used as low-noise road surfaces. The article presents the test results of viscoelastic properties of asphalt mixtures SMA8 LA, SMA8 LA containing 10%, 20%, and 30% of rubber granulate, with bitumen 50/70, bitumen 50/70 modified with styrene butadiene styrene (SBS) copolymer, crumb rubber, and mixtures with bitumen modified simultaneously with crumb rubber and SBS copolymer. The reference asphalt mixture was the porous asphalt (PA8). The presented results of water damage resistance, degradation resistance in the Cantabro abrasion loss test, stiffness modulus as a function of temperature and hysteresis loop proved that the amount of rubber granulate and the type of binder significantly affect the values of these parameters. Attention was paid to the possibility of using the results of uniaxial cyclic compression tests when determining the proportion of rubber granulate in SMA8 LA mixtures. Tests of hysteresis loops and stiffness modulus confirm much higher elasticity of SMA8 LA mixtures with rubber granulate as compared to mixtures without the addition of granulate.
机译：在沥青混合物组合物中使用橡胶颗粒以及多孔弹性层的使用是由许多研究中心表示的，作为对轮胎/道路降噪的积极影响的因素。然而，与沥青混凝土（AC）或石头乳香沥青（SMA）相比，注意力较低的结构耐久性。石材乳香沥青减少轮胎/道路噪音（SMA LA）层也已被用作低噪音路面。本文介绍了沥青混合物SMA8，SMA81a，含有10％，20％和30％橡胶颗粒的粘弹性性能的测试结果，用沥青50/70，用苯乙烯丁二烯苯乙烯（SBS）共聚物改性沥青50/70 ，橡胶，与沥青与碎屑橡胶和SBS共聚物同时改性的混合物。参考沥青混合物是多孔沥青（PA8）。令人损伤的耐水性，降解耐力损失试验中的抑制性，刚度模量作为温度和滞后回路的函数，证明了橡胶颗粒的量和粘合剂的类型显着影响了这些参数的值。在确定SMA8 La混合物中橡胶颗粒的比例时，使用单轴环状压缩试验结果的可能性。与混合物相比，滞后环和刚度模量的磁滞回路和刚度模量与橡胶颗粒相比，在没有添加颗粒的情况下，使用橡胶颗粒确认了Sma8 La混合物的更高弹性。

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