本文關(guān)鍵詞： 瀝青混合料 級配均勻度 平均粒度 彩色數(shù)字圖像　出處：《廣西大學(xué)學(xué)報(bào)(自然科學(xué)版)》2016年06期 　論文類型：期刊論文

【摘要】：為了對瀝青混合料級配顆粒均勻度進(jìn)行定量評價(jià),基于彩色數(shù)字圖像處理技術(shù)準(zhǔn)確提取集料顆粒,引入顆粒平均粒度與均勻度指標(biāo),結(jié)合彩色數(shù)字圖像處理方法,對5種最大粒徑為16 mm的瀝青混合料級配分別采用中位直徑和頻率直徑來評定瀝青混合料級配的均勻性。研究結(jié)果表明:基于彩色數(shù)字圖像處理技術(shù)的級配顆粒均勻度評價(jià)方法避免了大顆粒被判斷為小顆粒的缺陷,保證全部粗集料顆粒均被有效提取,采用中位直徑與頻率直徑進(jìn)行級配均勻性評價(jià),其準(zhǔn)確度較高,同時(shí)發(fā)現(xiàn),AM-16類級配較SMA-16級配偏粗,但其粒度均勻性小于AK-16級配。粒度均勻性指標(biāo)可以較好評價(jià)級配的均勻程度,可為級配顆粒均勻性評價(jià)提供一種有效的定量評價(jià)依據(jù)。
[Abstract]:In order to evaluate the gradation uniformity of asphalt mixture accurately based on color digital image processing technology the average particle size and uniformity index were introduced. Combined with color digital image processing method. The average diameter and frequency diameter of five kinds of asphalt mixture gradation with maximum diameter of 16 mm were used to evaluate the homogeneity of asphalt mixture gradation. The grading particle uniformity evaluation method based on color digital image processing technology avoids the defect that large particles are judged as small particles. To ensure that all coarse aggregate particles are effectively extracted, the average diameter and frequency diameter are used to evaluate the homogeneity of the gradation, and the accuracy is high. At the same time, it is found that the gradation of AM-16 is coarse than that of SMA-16. However, the particle size uniformity is smaller than that of AK-16 gradation, and the particle size uniformity index can better evaluate the gradation uniformity, which can provide an effective quantitative evaluation basis for the gradation particle uniformity evaluation.
【作者單位】： 廣西大學(xué)工程防災(zāi)與結(jié)構(gòu)安全教育部重點(diǎn)實(shí)驗(yàn)室;廣西大學(xué)廣西防災(zāi)減災(zāi)與工程安全重點(diǎn)實(shí)驗(yàn)室;廣東長大公路工程有限公司;華南理工大學(xué)土木交通學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51568007,51378224,51208212) 廣西自然科學(xué)基金資助項(xiàng)目(2015GXNSFBA139217) 廣西重點(diǎn)實(shí)驗(yàn)室系統(tǒng)性研究項(xiàng)目資助(2016ZDX0)
【分類號】：U414
【正文快照】： 0引言粗集料顆粒構(gòu)成混合料的骨架結(jié)構(gòu),對瀝青路面的各項(xiàng)使用性能起著至關(guān)重要的作用[1-3]。瀝青混合料的設(shè)計(jì)必須從瀝青混合料的級配設(shè)計(jì)選擇入手,經(jīng)過合理選擇粗細(xì)集料比例以及填充礦料用量,使混合料達(dá)到既形成嵌擠又能保證密實(shí)狀態(tài)。集料體積比例與填充料用量選擇不當(dāng),則不，

本文編號：1472883