本文關鍵詞：機制砂在瀝青混合料中的適應性研究　出處：《長安大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： 機制砂 適應性 機制砂級配 瀝青砂漿 力學性能 黏附性 路用性能

【摘要】：機制砂以其優(yōu)良的物理性能在瀝青路面中得到廣泛的應用,瀝青路面主要采用石灰?guī)r機制砂作為細集料,但是在應用過程中也出現(xiàn)一些問題,例如石灰?guī)r機制砂由于強度低容易被壓碎。為了使機制砂更好的應用于瀝青路面中,有必要研究機制砂在瀝青混合料中的適應性,針對石灰?guī)r機制砂在應用中的不足,開展了輝綠巖、角閃巖、閃長巖等中性巖質機制砂在瀝青混合料中的適應性研究。首先,本文根據(jù)實際工程經驗和現(xiàn)有研究成果分析了機制砂級配存在的問題,基于機制砂在瀝青混合料中的作用機理,采用均勻設計方法對機制砂的級配進行優(yōu)化,并通過路用性能試驗驗證了優(yōu)化結果的合理性;其次,對輝綠巖、角閃巖、閃長巖等中性巖質機制砂與瀝青的黏附性進行了分析,提出了新的評價方法,并根據(jù)此方法評價了消石灰、水泥、PA-1型抗剝落劑對提高中性巖質機制砂與瀝青黏附性的效果;然后,提出了基于力學性能的瀝青砂漿配合比設計方法,采用單軸抗壓試驗和劈裂試驗研究了不同巖性的瀝青砂漿力學性能,得出中性巖質瀝青砂漿的力學性能優(yōu)于石灰?guī)r瀝青砂漿的瀝青性能;最后,通過同巖性AC-13瀝青混合料的路用性能與石灰?guī)r機制砂瀝青混合料的路用性能進行對比,結果表明在摻加適量的消石灰或抗剝落劑時,同巖性瀝青混合料的路用性能更佳�；谏鲜鲅芯砍晒砻�,輝綠巖、角閃巖、閃長巖等中性巖質機制砂能夠作為瀝青路面表面層的細集料。
[Abstract]:The machined sand is widely used in asphalt pavement because of its excellent physical properties. The asphalt pavement mainly uses limestone sand as fine aggregate, but there are some problems in the process of application. For example, limestone sand is easy to be crushed because of its low strength. In order to make the machine-made sand better used in asphalt pavement, it is necessary to study the adaptability of machine-made sand in asphalt mixture. Aiming at the deficiency of limestone mechanism sand in application, the adaptability of diabase, amphibolite, diorite and other neutral rock mechanism sand in asphalt mixture is studied. Based on the practical engineering experience and the existing research results, this paper analyzes the existing problems of mechanism sand gradation. Based on the mechanism of mechanism sand in asphalt mixture, the uniform design method is adopted to optimize the gradation of machined sand. The rationality of the optimized results is verified by the road performance test. Secondly, the adhesion of the mechanism sand of diabase, amphibolite and diorite to asphalt is analyzed, and a new evaluation method is put forward, according to which the quicklime and cement are evaluated. The effect of PA-1 anti-spalling agent on the adhesion of neutral rock mechanism sand to asphalt; Then, the design method of asphalt mortar mixture ratio based on mechanical properties is put forward, and the mechanical properties of asphalt mortar with different lithology are studied by uniaxial compression test and splitting test. The results show that the mechanical properties of neutral asphalt mortar are better than those of limestone asphalt mortar. Finally, the road performance of AC-13 asphalt mixture with lithology is compared with that of limestone sand asphalt mixture. The results show that when adding appropriate amount of quicklime or anti-spalling agent. Based on the above research results, it is shown that the fine aggregate of surface layer of asphalt pavement can be used as the neutral rock mechanism sand such as diabase, amphibolite and diorite.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U414

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相關期刊論文 前1條

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本文編號：1419230