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首页> 外文期刊>Journal of materials in civil engineering >Investigating Fatigue Behavior of Nanoclay and Nano Hydrated Lime Modified Bitumen Using LAS Test
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Investigating Fatigue Behavior of Nanoclay and Nano Hydrated Lime Modified Bitumen Using LAS Test

机译：使用LAS试验研究纳米粘土和纳米水化石灰改性沥青的疲劳行为

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04015136.1-04015136.7%In this study, the effects of two nanomaterials-nanoclay and nano hydrated lime-on the fatigue properties of bitumen were investigated. Nano hydrated lime was produced in a laboratory using a planetary ball mill. The milling process was conducted in the specified conditions of speed, time of rotation, and ball to powder ratio (BPR). The processing conditions were determined by a trial and error procedure. With the aim of evaluating the fatigue life of modified mixes, various filler-bitumen combinations were tested under linear amplitude sweep (LAS) testing, which was performed using a dynamic shear rheometer (DSR) instrument. The results indicated that nanoclay at 6% level (by weight of bitumen) increased fatigue life of the binder by approximately 40%. The specimen that contained 10% nano hydrated lime showed the fatigue life that was 49% greater than that containing 10% hydrated lime. Based on the results of this research, 6% nanoclay and 5% nano hydrated lime were the optimum amounts of these materials to be added to bitumen for nanomodification purposes.
机译：04015136.1-04015136.7％本研究研究了纳米粘土和纳米熟石灰这两种纳米材料对沥青疲劳性能的影响。使用行星式球磨机在实验室中生产纳米级熟石灰。研磨过程在指定的速度，旋转时间和球粉比（BPR）条件下进行。加工条件通过反复试验确定。为了评估改性混合物的疲劳寿命，使用动态剪切流变仪（DSR）在线性振幅扫描（LAS）测试中测试了各种填料-沥青组合。结果表明，6％（按沥青重量计）含量的纳米粘土可使粘合剂的疲劳寿命提高约40％。包含10％纳米熟石灰的样品的疲劳寿命比包含10％熟石灰的疲劳寿命长49％。根据这项研究的结果，6％的纳米粘土和5％的纳米级熟石灰是为纳米改性而添加到沥青中的最佳材料量。

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