\rSYD-0752乳化瀝青濕輪耗儀<\/strong><\/span>\r<\/p>\r

\r乳化瀝青濕輪耗儀<\/strong><\/span>用途：<\/strong><\/span>\r<\/p>\r

\r        <\/strong><\/span>乳化瀝青濕輪磨耗試驗(yàn)儀用于測(cè)定乳化瀝青稀漿封層混合料成型后的耐磨性能的試驗(yàn)，可與負(fù)荷輪載試驗(yàn)儀器確定乳化瀝青稀漿封層混合料的**瀝青含量。本儀器符合交通部“<\/strong><\/span>JTG E20-2011<\/strong><\/span>”標(biāo)準(zhǔn)中：“<\/strong><\/span>T0752-2011<\/strong><\/span>”的試驗(yàn)規(guī)范。<\/strong><\/span>\r<\/p>\r

\r <\/strong>\r<\/p>\r

\r乳化瀝青濕輪耗儀<\/strong><\/span>儀器組成：<\/strong><\/span>\r<\/p>\r

\r 主要有盛樣盤(pán)、磨耗頭、升降平臺(tái)、升降搖桿、夾具等組成。<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r乳化瀝青濕輪耗儀<\/strong><\/span>主要特點(diǎn)：<\/strong><\/span>\r<\/p>\r

\r  1<\/strong><\/span>、制作精良，電機(jī)轉(zhuǎn)速穩(wěn)定，測(cè)試結(jié)果準(zhǔn)確可靠<\/strong><\/span>\r<\/p>\r

\r  2<\/strong><\/span>、具有電子定時(shí)裝置，定時(shí)精度高，設(shè)定時(shí)間到則自動(dòng)停止試驗(yàn)。<\/strong><\/span>\r<\/p>\r

\r  3<\/strong><\/span>、設(shè)計(jì)先進(jìn)，穩(wěn)重大方，電機(jī)轉(zhuǎn)速穩(wěn)定；<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r主要技術(shù)指標(biāo)：<\/strong><\/span>\r<\/p>\r

\r  1<\/strong><\/span>、工作電源：<\/strong><\/span> 220V<\/strong><\/span>；<\/strong><\/span>50Hz<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  2<\/strong><\/span>、電機(jī)轉(zhuǎn)速：<\/strong><\/span> 1400rpm<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  3<\/strong><\/span>、整機(jī)功耗： 不大于<\/strong><\/span>0.38kw<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  4<\/strong><\/span>、磨頭自轉(zhuǎn)速度：<\/strong><\/span> 140rpm<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  5<\/strong><\/span>、磨頭公轉(zhuǎn)速度：<\/strong><\/span> 61\rrpm<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  6<\/strong><\/span>、磨頭質(zhì)量：<\/strong><\/span> 2270g  20g (<\/strong><\/span>工作質(zhì)量<\/strong><\/span>)<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  7<\/strong><\/span>、磨頭橡膠管長(zhǎng)度<\/strong><\/span>L<\/strong><\/span>：<\/strong><\/span> 127mm<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  8<\/strong><\/span>、定時(shí)性能：<\/strong><\/span> 5<\/strong><\/span>分鐘定時(shí)；<\/strong><\/span>\r<\/p>\r

\r  9<\/strong><\/span>、機(jī)體重量：<\/strong><\/span> 60kg<\/strong><\/span>\r<\/p>\r

\r  10<\/strong><\/span>、外形尺寸：<\/strong><\/span> 600<\/strong><\/span>×<\/strong><\/span>480<\/strong><\/span>×<\/strong><\/span>845<\/strong><\/span>（<\/strong><\/span>L<\/strong><\/span>×<\/strong><\/span>W<\/strong><\/span>×<\/strong><\/span>H<\/strong><\/span>）<\/strong><\/span>(mm)<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

\r  11<\/strong><\/span>、環(huán)境溫度： ≤<\/strong><\/span>35<\/strong><\/span>℃。<\/strong><\/span>\r<\/p>\r

\r  12<\/strong><\/span>、相對(duì)濕度： ≤<\/strong><\/span>85%<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r計(jì)算：<\/strong><\/span>\r<\/p>\r

\r 乳化瀝青稀漿封層混合料的磨耗值：<\/strong><\/span>\r<\/p>\r

\r WTAT=(ma-mb)/A<\/strong><\/span>\r<\/p>\r

\r 式中：<\/strong><\/span>WTAT<\/strong><\/span>—乳化瀝青稀漿封層混合料的磨耗值，<\/strong><\/span>g/m&sup2;;<\/strong><\/span>\r<\/p>\r

\r ma<\/strong><\/span>—磨耗前的試件重（<\/strong><\/span>g<\/strong><\/span>）<\/strong><\/span>;<\/strong><\/span>\r<\/p>\r

\r mb<\/strong><\/span>—磨耗后的試件重（<\/strong><\/span>g<\/strong><\/span>）<\/strong><\/span>;<\/strong><\/span>\r<\/p>\r

\r a<\/strong><\/span>—系數(shù)<\/strong><\/span> a=1/A;<\/strong><\/span>\r<\/p>\r

\r A<\/strong><\/span>—磨耗頭膠管的磨耗面積<\/strong><\/span>m&sup2;;(<\/strong><\/span>由儀器說(shuō)明書(shū)提供）。<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r方法與步驟：<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r  1<\/strong><\/span>、準(zhǔn)備工作<\/strong><\/span>\r<\/p>\r

\r  a<\/strong><\/span>、按要求的級(jí)配準(zhǔn)備粗、細(xì)集料及填料烘干，其中礦料用<\/strong><\/span>4.75mm<\/strong><\/span>篩余部分。<\/strong><\/span>\r<\/p>\r

\r  b<\/strong><\/span>、稱(chēng)混合料總重<\/strong><\/span>800g<\/strong><\/span>放入拌鍋拌勻，然后加入適量的水拌勻，在加入定量的乳化瀝青拌和時(shí)間不超過(guò)<\/strong><\/span>30s  2s<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r

\r  c<\/strong><\/span>、將油毛氈圓片平鋪在平底的搪瓷盤(pán)內(nèi)，再將圓形模板放在平整的油毛氈圓片上居中。立即把拌勻的稀漿封層混合料倒入模板的圓孔中。<\/strong><\/span>\r<\/p>\r

\r  d<\/strong><\/span>、用刮板刮平，刮掉多余的稀漿混合料，整個(gè)過(guò)程宜在<\/strong><\/span>45s<\/strong><\/span>內(nèi)完成。<\/strong><\/span>\r<\/p>\r

\r  e<\/strong><\/span>、取走模板，把盛有試樣的搪瓷盤(pán)放入<\/strong><\/span>60<\/strong><\/span>℃<\/strong><\/span>  3<\/strong><\/span>℃的烘箱中烘至恒重，一般不少于<\/strong><\/span>16h<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r

\r  2<\/strong><\/span>、試驗(yàn)步驟<\/strong><\/span>\r<\/p>\r

\r  a<\/strong><\/span>、時(shí)間從烘箱中取出冷卻到室溫，稱(chēng)取油毛氈圓片及時(shí)間的合計(jì)質(zhì)量（<\/strong><\/span>ma<\/strong><\/span>）準(zhǔn)確至<\/strong><\/span>0.1g<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r

\r  b<\/strong><\/span>、浸水<\/strong><\/span>1h<\/strong><\/span>濕輪磨耗試驗(yàn)時(shí)，把試件及油毛氈放入<\/strong><\/span>25<\/strong><\/span>℃<\/strong><\/span> \r1<\/strong><\/span>℃的水浴中保溫<\/strong><\/span>60min<\/strong><\/span>；浸水<\/strong><\/span>6d<\/strong><\/span>濕輪磨耗試驗(yàn)時(shí)，把試件及油毛氈放入<\/strong><\/span>25<\/strong><\/span>℃<\/strong><\/span>  1<\/strong><\/span>℃的水浴中保溫<\/strong><\/span>6d<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r

\r  c<\/strong><\/span>、把試件及油毛氈從水槽中取出，放入盛樣盤(pán)中，往盛樣盤(pán)中加入<\/strong><\/span>25<\/strong><\/span>℃的水，使試件完全浸入水中，水面到試件表面的深度不少于<\/strong><\/span>6mm<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r

\r  d<\/strong><\/span>、裝有試件的盛樣盤(pán)固定在磨耗頭。<\/strong><\/span>\r<\/p>\r

\r  e<\/strong><\/span>、開(kāi)動(dòng)儀器，使磨頭轉(zhuǎn)動(dòng)<\/strong><\/span>300<\/strong><\/span>±<\/strong><\/span>2S<\/strong><\/span>后停止。注：每次試驗(yàn)后把磨耗頭上的橡膠管轉(zhuǎn)一定角度，以獲得一個(gè)新磨耗面（用過(guò)的面不得使用），或換上新的橡膠管。<\/strong><\/span>\r<\/p>\r

\r  f<\/strong><\/span>、降下平臺(tái)將試件從盛樣盤(pán)中取出，用水沖洗掉磨下的碎屑，放入<\/strong><\/span>60<\/strong><\/span>℃烘箱中烘至恒重。<\/strong><\/span>\r<\/p>\r

\r  g<\/strong><\/span>、從烘箱中取出試件，冷卻到室溫，然后稱(chēng)取試件與油毛氈的總質(zhì)量（<\/strong><\/span>mb<\/strong><\/span>）。<\/strong><\/span>\r<\/p>\r

\r  <\/strong><\/span>\r<\/p>\r

\r報(bào)告：<\/strong><\/span>\r<\/p>\r

\r  a<\/strong><\/span>、當(dāng)一組測(cè)定值中某個(gè)測(cè)定值與平均值之差大于標(biāo)準(zhǔn)差的<\/strong><\/span>k<\/strong><\/span>倍時(shí)，該測(cè)定值予以舍棄，并以其余測(cè)定值的平均值作為試驗(yàn)結(jié)果。當(dāng)試驗(yàn)數(shù)目<\/strong><\/span>n<\/strong><\/span>為<\/strong><\/span>3<\/strong><\/span>、<\/strong><\/span>4<\/strong><\/span>、<\/strong><\/span>5<\/strong><\/span>、<\/strong><\/span>6<\/strong><\/span>時(shí)<\/strong><\/span>k<\/strong><\/span>值分別為<\/strong><\/span>1.15<\/strong><\/span>、<\/strong><\/span>1.46<\/strong><\/span>、<\/strong><\/span>1.67<\/strong><\/span>、<\/strong><\/span>1.82<\/strong><\/span>。一組試驗(yàn)個(gè)數(shù)一般不少于<\/strong><\/span>3<\/strong><\/span>個(gè)。<\/strong><\/span>\r<\/p>\r

\r  b<\/strong><\/span>、報(bào)告應(yīng)包括：混合料配合比、試件的濕輪磨耗值。<\/strong><\/span>\r<\/p>