本文關(guān)鍵詞：防滑降噪瀝青路面配合比試驗研究　出處：《中南林業(yè)科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： OGFC 防滑 降噪 空隙率 配合比

【摘要】：防滑降噪瀝青路面興起于上個世紀(jì)70年代,80年代引入我國,又稱為大空隙開級配排水式瀝青磨耗層,屬于路面新型材料。其所具有的防滑、降噪、防水及防水霧等特性受到了世界各國的廣泛關(guān)注。與普通瀝青混合料相比,防滑降噪瀝青混合料具有大空隙骨架及粗集料比例大的特點,因此防滑降噪瀝青路面對原材料、高溫穩(wěn)定性、水穩(wěn)性以及力學(xué)性能有更高的要求。 本文通過查閱大量國內(nèi)外相關(guān)文獻和資料,掌握國內(nèi)外情況和動態(tài)。以分析防滑降噪瀝青路面的特點為基礎(chǔ),設(shè)定混合料設(shè)計目標(biāo),研究OGFC混合料的原材料技術(shù)要求、級配的選取以及最佳瀝青用量的選擇,通過大量室內(nèi)試驗進行配合比設(shè)計的研究,其中,優(yōu)質(zhì)的原材料是決定路面成功的第一步,所以本文選用高粘度改性瀝青。經(jīng)過研究分析后,本文選用20%的空隙率為目標(biāo)空隙率,以2.36mm作為關(guān)鍵篩孔,通過控制2.36mm的篩孔通過率調(diào)整空隙率,確定最佳級配；用經(jīng)驗計算法和流淌試驗共同確定最佳瀝青用量。再通過對瀝青混合料的路用性能的研究,包括馬歇爾試驗、飛散試驗、析漏試驗、車轍試驗、浸水馬歇爾試驗、凍融劈裂試驗以及抗壓強度等,分別對瀝青混合料的高溫穩(wěn)定性能、水穩(wěn)性能以及力學(xué)性能加以研究分析。分析結(jié)果表明OGFC混合料符合我國現(xiàn)行規(guī)范要求的技術(shù)指標(biāo),說明防滑降噪瀝青路面具有良好的路用性能。結(jié)合試驗路段的情況,本文研究了OGFC路面的施工關(guān)鍵技術(shù),提出了路面施工技術(shù)以及對工程質(zhì)量檢測技術(shù)。 防滑降噪瀝青混合料常采用玄武巖作為石料,玄武巖具有質(zhì)地堅硬,耐磨性好的特點,但價格高且在湖南分布有限,而石灰?guī)r價格相對低,分布較廣泛。本文研究用石灰?guī)r與玄武巖分別作為防滑降噪瀝青混合料的石料,分別測定石灰?guī)r和玄武巖混合料的馬歇爾穩(wěn)定度與流值、車轍深度、殘留穩(wěn)定度、抗壓強度和劈裂強度。結(jié)果表明采用石灰?guī)r的混合料試驗結(jié)果無明顯差異,其中石灰?guī)r的性能要比玄武巖稍微偏低,但仍符合技術(shù)標(biāo)準(zhǔn)。這說明選用優(yōu)質(zhì)的石灰?guī)r可一定程度代替玄武巖作為防護降噪瀝青混料的粗集料。本文同樣采用聚酯纖維作為對比試驗,試驗表明聚酯纖維對防滑降噪瀝青混合料的性能有一定的提高作用。
[Abstract]:Anti-skid noise reduction asphalt pavement was introduced into China in -30s and 1980s, also known as large void open graded drainage asphalt wear layer, which belongs to a new type of pavement material, which has anti-slip, noise reduction. The characteristics of waterproof and water mist have been paid more and more attention all over the world. Compared with ordinary asphalt mixture, anti-skid and noise reduction asphalt mixture has the characteristics of large void skeleton and large proportion of coarse aggregate. Therefore, anti-slip and noise reduction asphalt pavement has higher requirements for raw materials, high temperature stability, water stability and mechanical properties. Based on the analysis of the characteristics of anti-skid and noise reduction asphalt pavement, the paper sets the design goal of mixture through consulting a large number of domestic and foreign relevant literature and materials, and grasping the domestic and foreign situation and dynamics. This paper studies the technical requirements of raw materials, the selection of gradation and the selection of the best asphalt content of OGFC mixture, and carries on the research of mix ratio design through a large number of indoor tests. High quality raw material is the first step to determine the success of pavement, so this paper chooses high viscosity modified asphalt. After research and analysis, this paper selects 20% porosity as the target void ratio. Taking 2.36mm as the key sieve hole, the best gradation was determined by controlling the pass rate of 2.36mm sieve hole to adjust the void ratio. The optimum asphalt content is determined by empirical calculation method and flow test. Then through the research on the pavement performance of asphalt mixture, including Marshall test, dispersion test, leakage test, rutting test. Water immersion Marshall test, freeze-thaw splitting test and compressive strength, respectively, to the asphalt mixture at high temperature stability. The results show that the OGFC mixture meets the technical requirements of the current code of our country. It shows that the anti-skid and noise reduction asphalt pavement has good road performance. Combined with the experimental section of the case, this paper studies the key construction technology of OGFC pavement. The pavement construction technology and the inspection technology of engineering quality are put forward. Anti-skid and noise-reducing asphalt mixture often uses basalt as stone. Basalt has the characteristics of hard texture and good wear resistance, but its price is high and its distribution is limited in Hunan, while the price of limestone is relatively low. In this paper, limestone and basalt are used as stone materials for anti-skid and noise reduction asphalt mixture, and Marshall stability and current value and rutting depth of limestone and basalt mixture are measured respectively. The residual stability, compressive strength and splitting strength. The results show that there is no obvious difference in the test results of the mixture with limestone, and the limestone performance is slightly lower than that of basalt. But it still accords with the technical standard. This shows that the high quality limestone can be used as the coarse aggregate to protect the noise reducing asphalt mixture to some extent. The polyester fiber is also used as the contrast test in this paper. The test shows that polyester fiber can improve the performance of anti-slip and noise reducing asphalt mixture.
【學(xué)位授予單位】：中南林業(yè)科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U414;U416.217

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本文編號：1435307