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首页> 外文期刊>International journal of engineering research and industrial applications >BITUMINOUS CONCRETE MIX DESIGN USING NANOSILICA AS MODIFIER
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BITUMINOUS CONCRETE MIX DESIGN USING NANOSILICA AS MODIFIER

机译：使用纳米二氧化硅作为改性剂的双混凝土混合设计

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Nano-modified bituminous concrete was prepared using a nano additive called as Nano silica which was extracted from rice hush ash is a relatively new inorganic material that is used to enhance its potential beneficial properties like huge surface area, strong adsorption, good dispersal ability, high chemical purity and excellent stability. Materials include coarse and fine aggregates, plain bitumen and nano additive. Scanning Electron Microscope (SEM) analysis coupled with Energy Dispersive X-ray (SEM/EDX) Spectroscopy is executed for component analysis. Marshall Specimens were prepared for the aggregate gradation of Bituminous Concrete Grade Ⅱ with unmodified and Nanosilica modified bitumen. Marshall Mix properties were studied for both binders. The performance characteristics of Bituminous Concrete mixes were studied by conducting Marshall Stability, Indirect Tensile Strength and Repeated Load Tests in the laboratory. Results show Nano silica to bituminous concrete mix significantly improves the performance of the mix. Similarly tensile strength and fatigue characteristics were improved for the bituminous concrete mix with Nanosilica. Because of improved mechanical properties, nanosilica offers an excellent potential for bituminous concrete mix modification. . The Stability value was found to have increased with the addition of nanosilica when compared to conventional mixes with a reduction in flow values. An attempt has been made to develop fatigue models, to find out the variation of fatigue life and to develop relationship between resilient modulus (M_r) and Fatigue life (N_f) of different contents of nano-silica using SPSS. This can be further extended by conducting studies for different modified binders with less quantity of Nanosilica as well as with different varying temperatures and also for different types of aggregate mixes.
机译：纳米改性的沥青混凝土是使用一种称为纳米二氧化硅的纳米添加剂制备的，纳米添加剂是从稻壳灰中提取的，是一种相对较新的无机材料，可用于增强其潜在的有益性能，例如表面积大，吸附力强，分散能力强，化学纯度和优异的稳定性。材料包括粗骨料和细骨料，普通沥青和纳米添加剂。执行扫描电子显微镜（SEM）分析和能量色散X射线（SEM / EDX）光谱分析，以进行成分分析。制备了马歇尔试样，用于未改性沥青和纳米二氧化硅改性沥青对Ⅱ级沥青混凝土的骨料级配。研究了两种粘合剂的马歇尔混合性能。通过在实验室中进行马歇尔稳定性，间接抗张强度和反复载荷试验研究了沥青混凝土混合料的性能特征。结果表明，纳米二氧化硅与沥青混凝土的混合料显着改善了混合料的性能。类似地，与纳米二氧化硅的沥青混凝土混合物改善了抗张强度和疲劳特性。由于改善的机械性能，纳米二氧化硅为沥青混凝土混合物的改性提供了极好的潜力。 。与常规混合物相比，发现当添加纳米二氧化硅时，稳定性值有所提高，而流量值却有所降低。尝试开发疲劳模型，找出疲劳寿命的变化，并使用SPSS开发不同含量的纳米二氧化硅的弹性模量（M_r）和疲劳寿命（N_f）之间的关系。通过对具有较少量的纳米二氧化硅以及具有不同的变化温度以及不同类型的骨料混合物的不同改性粘合剂进行研究，可以进一步扩展这一范围。

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