行業(yè)資訊
瀝青原材料試驗的注意問題
來源：http://www.huatts.com/ 日期：2023-07-19
一、瀝青試樣準(zhǔn)備事項
1、 Preparation of asphalt samples
(1)瀝青在裝卸、運輸和貯存過程中混入水和異物，會影響以后試驗檢測的結(jié)果。操作原理是通過加熱和過篩方式，將水分和異物分別除去。操作時注意溫度控制，避免因溫度過高造成瀝青老化。
(1) Mixing water and foreign objects into asphalt during loading, unloading, transportation, and storage can affect the results of future testing and detection. The operating principle is to remove moisture and foreign objects separately through heating and sieving. Pay attention to temperature control during operation to avoid asphalt aging caused by excessive temperature.
(2)為避免因多次加熱造成瀝青老化，每次制樣前需清楚將要做的試驗項目，一次性將瀝青樣品制備出來，并按要求灌模成型。
(2) To avoid asphalt aging caused by repeated heating, it is necessary to clarify the test items to be conducted before each sample preparation. The asphalt sample should be prepared in one go and molded according to the requirements.
二、瀝青密度與相對密度試驗
2、 Asphalt density and relative density test
(1)凡涉及密度瓶在盛滿物體時的稱重，都要對密度瓶進(jìn)行恒溫操作，以達(dá)到更加準(zhǔn)確的測定結(jié)果。
(1) When weighing a density bottle when it is filled with an object, a constant temperature operation must be performed on the density bottle to achieve more accurate measurement results.
(2)同一試樣應(yīng)平行試驗兩次，當(dāng)兩次試驗結(jié)果的差值符合重復(fù)性試驗的精密度要求時，以平均值作為瀝青的密度試驗結(jié)果，并準(zhǔn)確至3位小數(shù)，試驗報告應(yīng)注明試驗溫度。對黏稠及液體瀝青，重復(fù)性試驗的允許差為0.003g/cm3，復(fù)現(xiàn)性試驗的允許差為0.007g/cm3;對固體瀝青，重復(fù)性試驗的允許差為0.01g/cm3，復(fù)現(xiàn)性試驗的允許差為0.02g/cm3。
(2) The same sample should be tested twice in parallel. When the difference between the two test results meets the precision requirements of the repeatability test, the average value should be used as the density test result of the asphalt, accurate to three decimal places. The test report should indicate the test temperature. For viscous and liquid asphalt, the allowable deviation for repeatability testing is 0.003g/cm3, and the allowable deviation for reproducibility testing is 0.007g/cm3; For solid asphalt, the allowable deviation for repeatability testing is 0.01g/cm3, and the allowable deviation for reproducibility testing is 0.02g/cm3.
(3)密度瓶的水值應(yīng)經(jīng)常校正，一般每年至少進(jìn)行一次。
(3) The water value of the density bottle should be regularly corrected, usually at least once a year.
(4)抽真空不宜過快，防止樣品被帶出密度瓶。
(4) The vacuum should not be pumped too quickly to prevent the sample from being taken out of the density bottle.
三、下面濟南瀝青生產(chǎn)廠家再來講講瀝青針入度試驗說明與注意問題
3、 Next, let's talk about the asphalt penetration test instructions and precautions for Jinan asphalt manufacturers
(1)針入度試驗的三項關(guān)鍵性條件分別是溫度、測試時間和針的質(zhì)量，如這三項試驗條件控制不準(zhǔn)，將嚴(yán)重影響試驗結(jié)果的準(zhǔn)確性。三項條件常用狀態(tài)，也就是標(biāo)準(zhǔn)狀態(tài)為:溫度25℃、測試時間5s、針的質(zhì)量100g。
(1) The three key conditions for penetration testing are temperature, testing time, and needle quality. If these three test conditions are not controlled properly, it will seriously affect the accuracy of the test results. The common state of the three conditions, that is, the Standard state is: temperature 25 ℃, test time 5s, needle mass 100g.
(2)測定針入度值大于200的瀝青試樣時，至少用3支標(biāo)準(zhǔn)針，每次試驗后將針留在試樣中，直至3次平行試驗完成后，才能將標(biāo)準(zhǔn)針一并取出。
(2) When measuring asphalt samples with a penetration value greater than 200, at least three standard needles should be used. After each test, the needles should be left in the sample until three parallel tests are completed before the standard needles can be taken out together.
(3)當(dāng)試驗結(jié)果小于50(0.1mm)時，重復(fù)性試驗的允許差為2(0.1mm)，復(fù)現(xiàn)性試驗的允許差為4(0.1mm);當(dāng)試驗結(jié)果等于或大于50(0.1mm)時，重復(fù)性試驗的允許差為平均值的4%，復(fù)現(xiàn)性試驗的允許差為平均值的8%。
(3) When the test result is less than 50 (0.1mm), the allowable difference for repeatability testing is 2 (0.1mm), and the allowable difference for reproducibility testing is 4 (0.1mm); When the test result is equal to or greater than 50 (0.1mm), the allowable difference for repeatability testing is 4% of the average value, and the allowable difference for reproducibility testing is 8% of the average value.
瀝青原材料試驗的注意問題相關(guān)內(nèi)容就講解到這里了，希望能夠給您好的幫助，更多事項就來我們網(wǎng)站http://www.huatts.com咨詢！
That's all for the relevant content on the precautions for asphalt raw material testing. I hope it can be helpful to you. For more information, please come to our website http://www.huatts.com consulting service
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