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\rSYD-0754<\/strong><\/span>乳化瀝青粘結力試驗儀<\/strong><\/span><\/strong><\/span>\r<\/p>\r

\r一、<\/strong><\/span>乳化瀝青粘結力試驗儀適用范圍：<\/strong><\/span>\r<\/p>\r

\r  本儀器用于測定乳化瀝青稀漿封層混合料達到完全固化所需的時間，用以確定乳化瀝青稀漿封層混合料施工后早期開放交通的時間。本儀器符合‘<\/strong><\/span>JYJ052-2000<\/strong><\/span>’標準中‘<\/strong><\/span>TO754-2000<\/strong><\/span>’的試驗規(guī)范。<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r二、乳化瀝青粘結力試驗儀<\/strong><\/span>主要特點：<\/strong><\/span>\r<\/p>\r

\r  1<\/strong><\/span>。臺式結構，攜帶方便，設計先進，美觀大方；<\/strong><\/span>\r<\/p>\r

\r  2<\/strong><\/span>。既可以做室內試驗，也可以在施工現場使用；<\/strong><\/span>\r<\/p>\r

\r  3<\/strong><\/span>。制作精良，使用方便，測試結果準確可靠。<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r三、<\/strong><\/span>乳化瀝青粘結力試驗儀主要技術參數<\/strong><\/span>:<\/strong><\/span>\r<\/p>\r

\r  1.<\/strong><\/span>壓頭：橡膠墊直徑<\/strong><\/span>28.6mm<\/strong><\/span>，厚<\/strong><\/span>6.4mm<\/strong><\/span> <\/strong><\/span>\r<\/p>\r

\r  2.<\/strong><\/span>測力板手：扭矩表最大扭矩不小于<\/strong><\/span>350NNaN<\/strong><\/span>，傳力桿直徑<\/strong><\/span>200px<\/strong><\/span>\r<\/p>\r

\r  3.<\/strong><\/span>圓型試模：①Φ<\/strong><\/span>60mm<\/strong><\/span>（內徑）×<\/strong><\/span>6mm<\/strong><\/span>（高）②Φ<\/strong><\/span>60mm<\/strong><\/span>（內徑）×<\/strong><\/span>10mm<\/strong><\/span>（高）<\/strong><\/span>\r<\/p>\r

\r  4.<\/strong><\/span>重量：<\/strong><\/span>20KG<\/strong><\/span>\r<\/p>\r

\r  5.<\/strong><\/span>外形尺寸：<\/strong><\/span>400x300x600mm<\/strong><\/span>\r<\/p>\r

\r  6.<\/strong><\/span>環(huán)境溫度：≤<\/strong><\/span>35<\/strong><\/span>℃<\/strong><\/span>\r<\/p>\r

\r  7.<\/strong><\/span>相對濕度：≤<\/strong><\/span>85%<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r四、<\/strong><\/span>乳化瀝青粘結力試驗儀試驗方法：<\/strong><\/span>\r<\/p>\r

\r  準備工作：<\/strong><\/span>\r<\/p>\r

\r  按要求的級配準備粗、細集料及填料，烘干。<\/strong><\/span>\r<\/p>\r

\r  稱混合料總重<\/strong><\/span>500g<\/strong><\/span>放入拌鍋，然后加入適量的睡拌勻，在加入定量的乳化瀝青拌合<\/strong><\/span>1-3<\/strong><\/span>分鐘。<\/strong><\/span>\r<\/p>\r

\r  將環(huán)形試模放置油毛氈上，將達到要求配比的稀漿混合料拌勻后立即導入試模鐘并刮平。對細或中稀漿封層料選用<\/strong><\/span>6mm<\/strong><\/span>高試模，對粗封層料選用<\/strong><\/span>10mm<\/strong><\/span>高試模。<\/strong><\/span>\r<\/p>\r

\r啟動秒表，開始計時，等式樣達到初凝后，將試件脫模，重新啟動秒表。<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r試驗步驟：<\/strong><\/span>\r<\/p>\r

\r  將初凝后的試件置于粘結力試驗儀的氣動橡膠墊下面，放置<\/strong><\/span>15<\/strong><\/span>分鐘。<\/strong><\/span>\r<\/p>\r

\r  將氣動橡膠墊底座壓在試件上面，用自行車氣筒或空氣壓縮機向儀器加壓。<\/strong><\/span>\r<\/p>\r

\r  當儀器壓力表達到<\/strong><\/span>0.72Mpa<\/strong><\/span>時，保持此壓力，此時橡膠底座對試件的壓力為<\/strong><\/span>193Kpa<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r

\r  達到壓力并保持不變后，將測扭矩扳手測力表歸零并套住氣缸上端，在<\/strong><\/span>0.7-1<\/strong><\/span>秒內平穩(wěn)、水平地扭轉<\/strong><\/span>90-120<\/strong><\/span>度，并讀取扭矩儀讀數。<\/strong><\/span>\r<\/p>\r

\r  升起橡膠底座，并擦干凈底部待下次測試。<\/strong><\/span>\r<\/p>\r

\r  此后每隔<\/strong><\/span>15<\/strong><\/span>分鐘重復上述步驟。<\/strong><\/span>\r<\/p>\r

\r  當固化時間較長時，間隔時間可延長到<\/strong><\/span>30<\/strong><\/span>分鐘重復試驗一次。<\/strong><\/span>\r<\/p>\r

\r  重復試驗直至達到最大扭矩，且此扭矩為定值時為止。<\/strong><\/span>\r<\/p>\r

\r  記錄達到最大扭矩時的時間即固化時間，固化時間加上初凝時間就是稀漿混合料的‘早期開放交通時間’<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r五、<\/strong><\/span>乳化瀝青粘結力試驗儀試驗報告：<\/strong><\/span>\r<\/p>\r

\r  報告應記述下列事項：<\/strong><\/span>\r<\/p>\r

\r  配制乳化瀝青的乳化劑及瀝青的品種，乳化劑用量，瀝青含量。<\/strong><\/span>\r<\/p>\r

\r  礦料種類及級配。<\/strong><\/span>\r<\/p>\r

\r  乳化瀝青稀漿封層混合料的固化時間。<\/strong><\/span>\r<\/p>\r

\r <\/strong><\/span>\r<\/p>\r

\r六、<\/strong><\/span>乳化瀝青粘結力試驗儀注意事項：<\/strong><\/span>\r<\/p>\r

\r  儀器長期不使用，每半個月將活塞桿上下活動，如活塞過緊，需加潤滑機油。測扭矩版搜也需每月轉動幾次。<\/strong><\/span>\r<\/p>