\rSYD-0754<\/strong><\/span>乳化瀝青粘結(jié)力試驗(yàn)儀<\/strong><\/span><\/strong><\/span>\r<\/p>\r\r一、<\/strong><\/span>乳化瀝青粘結(jié)力試驗(yàn)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(dá)到完全固化所需的時(shí)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(shí)間。本儀器符合‘<\/strong><\/span>JYJ052-2000<\/strong><\/span>’標(biāo)準(zhǔn)中‘<\/strong><\/span>TO754-2000<\/strong><\/span>’的試驗(yàn)規(guī)范。<\/strong><\/span>\r<\/p>\r\r <\/strong><\/span>\r<\/p>\r\r二、乳化瀝青粘結(jié)力試驗(yàn)儀<\/strong><\/span>主要特點(diǎn)：<\/strong><\/span>\r<\/p>\r\r 1<\/strong><\/span>。臺式結(jié)構(gòu)，攜帶方便，設(shè)計(jì)先進(jìn)，美觀大方；<\/strong><\/span>\r<\/p>\r\r 2<\/strong><\/span>。既可以做室內(nèi)試驗(yàn)，也可以在施工現(xiàn)場使用；<\/strong><\/span>\r<\/p>\r\r 3<\/strong><\/span>。制作精良，使用方便，測試結(jié)果準(zhǔn)確可靠。<\/strong><\/span>\r<\/p>\r\r <\/strong><\/span>\r<\/p>\r\r三、<\/strong><\/span>乳化瀝青粘結(jié)力試驗(yàn)儀主要技術(shù)參數(shù)<\/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(nèi)徑）×<\/strong><\/span>6mm<\/strong><\/span>（高）②Φ<\/strong><\/span>60mm<\/strong><\/span>（內(nèi)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(jié)力試驗(yàn)儀試驗(yàn)方法：<\/strong><\/span>\r<\/p>\r\r 準(zhǔn)備工作：<\/strong><\/span>\r<\/p>\r\r 按要求的級配準(zhǔn)備粗、細(xì)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(dá)到要求配比的稀漿混合料拌勻后立即導(dǎo)入試模鐘并刮平。對細(xì)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(dòng)秒表，開始計(jì)時(shí)，等式樣達(dá)到初凝后，將試件脫模，重新啟動(dòng)秒表。<\/strong><\/span>\r<\/p>\r\r <\/strong><\/span>\r<\/p>\r\r試驗(yàn)步驟：<\/strong><\/span>\r<\/p>\r\r 將初凝后的試件置于粘結(jié)力試驗(yàn)儀的氣動(dòng)橡膠墊下面，放置<\/strong><\/span>15<\/strong><\/span>分鐘。<\/strong><\/span>\r<\/p>\r\r 將氣動(dòng)橡膠墊底座壓在試件上面，用自行車氣筒或空氣壓縮機(jī)向儀器加壓。<\/strong><\/span>\r<\/p>\r\r 當(dāng)儀器壓力表達(dá)到<\/strong><\/span>0.72Mpa<\/strong><\/span>時(shí)，保持此壓力，此時(shí)橡膠底座對試件的壓力為<\/strong><\/span>193Kpa<\/strong><\/span>。<\/strong><\/span>\r<\/p>\r\r 達(dá)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(nèi)平穩(wěn)、水平地扭轉(zhuǎn)<\/strong><\/span>90-120<\/strong><\/span>度，并讀取扭矩儀讀數(shù)。<\/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(fù)上述步驟。<\/strong><\/span>\r<\/p>\r\r 當(dāng)固化時(shí)間較長時(shí)，間隔時(shí)間可延長到<\/strong><\/span>30<\/strong><\/span>分鐘重復(fù)試驗(yàn)一次。<\/strong><\/span>\r<\/p>\r\r 重復(fù)試驗(yàn)直至達(dá)到最大扭矩，且此扭矩為定值時(shí)為止。<\/strong><\/span>\r<\/p>\r\r 記錄達(dá)到最大扭矩時(shí)的時(shí)間即固化時(shí)間，固化時(shí)間加上初凝時(shí)間就是稀漿混合料的‘早期開放交通時(shí)間’<\/strong><\/span>\r<\/p>\r\r <\/strong><\/span>\r<\/p>\r\r五、<\/strong><\/span>乳化瀝青粘結(jié)力試驗(yàn)儀試驗(yàn)報(bào)告：<\/strong><\/span>\r<\/p>\r\r 報(bào)告應(yīng)記述下列事項(xiàng)：<\/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
