\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儀用于測定乳化瀝青稀漿封層混合料成型后的耐磨性能的試驗，可與負荷輪載試驗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>”標準中：“<\/strong><\/span>T0752-2011<\/strong><\/span>”的試驗規(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、磨耗頭、升降平臺、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：<\/strong><\/span>\r<\/p>\r

\r  1<\/strong><\/span>、制作精良，電機轉速穩(wěn)定，測試結果準確可靠<\/strong><\/span>\r<\/p>\r

\r  2<\/strong><\/span>、具有電子定時裝置，定時精度高，設定時間到則自動停止試驗。<\/strong><\/span>\r<\/p>\r

\r  3<\/strong><\/span>、設計先進，穩(wěn)重大方，電機轉速穩(wěn)定；<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r主要技術指標：<\/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>、電機轉速：<\/strong><\/span> 1400rpm<\/strong><\/span>；<\/strong><\/span>\r<\/p>\r

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

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

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

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

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

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

\r  9<\/strong><\/span>、機體重量：<\/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>、相對濕度： ≤<\/strong><\/span>85%<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r計算：<\/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>由儀器說明書提供）。<\/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>、準備工作<\/strong><\/span>\r<\/p>\r

\r  a<\/strong><\/span>、按要求的級配準備粗、細集料及填料烘干，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間不超過<\/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內，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，整個過程宜在<\/strong><\/span>45s<\/strong><\/span>內完成。<\/strong><\/span>\r<\/p>\r

\r  e<\/strong><\/span>、取走模板，把盛有試樣的搪瓷盤放入<\/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>、試驗步驟<\/strong><\/span>\r<\/p>\r

\r  a<\/strong><\/span>、時間從烘箱中取出冷卻到室溫，稱取油毛氈圓片及時間的合計質量（<\/strong><\/span>ma<\/strong><\/span>）準確至<\/strong><\/span>0.1g<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r

\r  b<\/strong><\/span>、浸水<\/strong><\/span>1h<\/strong><\/span>濕輪磨耗試驗時，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>濕輪磨耗試驗時，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，放入盛樣盤中，往盛樣盤中加入<\/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>、裝有試件的盛樣盤固定在磨耗頭。<\/strong><\/span>\r<\/p>\r

\r  e<\/strong><\/span>、開動儀器，使磨頭轉動<\/strong><\/span>300<\/strong><\/span>±<\/strong><\/span>2S<\/strong><\/span>后停止。注：每次試驗后把磨耗頭上的橡膠管轉一定角度，以獲得一個新磨耗面（用過的面不得使用），或換上新的橡膠管。<\/strong><\/span>\r<\/p>\r

\r  f<\/strong><\/span>、降下平臺將試件從盛樣盤中取出，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，然后稱取試件與油毛氈的總質量（<\/strong><\/span>mb<\/strong><\/span>）。<\/strong><\/span>\r<\/p>\r

\r  <\/strong><\/span>\r<\/p>\r

\r報告：<\/strong><\/span>\r<\/p>\r

\r  a<\/strong><\/span>、當一組測定值中某個測定值與平均值之差大于標準差的<\/strong><\/span>k<\/strong><\/span>倍時，該測定值予以舍棄，并以其余測定值的平均值作為試驗結果。當試驗數(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<\/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>。一組試驗個數(shù)一般不少于<\/strong><\/span>3<\/strong><\/span>個。<\/strong><\/span>\r<\/p>\r

\r  b<\/strong><\/span>、報告應包括：混合料配合比、試件的濕輪磨耗值。<\/strong><\/span>\r<\/p>