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公司基本資料信息
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mso-hansi-font-family:"Times New Roman"">透水時效試驗方法
mso-hansi-font-family:"Times New Roman"">一、砂基透水磚透水時效過濾罩試驗設(shè)備及材料:
1、設(shè)備:透水速率測試儀、干燥箱、過濾罩(100 mso-hansi-font-family:"Times New Roman"">×100mm "Times New Roman"">)。
2、材料:用高嶺土粉和去離子水調(diào)配的模擬道路徑流水樣,粉和水的比例為8g/L mso-hansi-font-family:"Times New Roman"">。
mso-hansi-font-family:"Times New Roman"">二、砂基透水磚透水時效過濾罩試樣:
mso-hansi-font-family:"Times New Roman"">試樣數(shù)量為5 "Times New Roman"">塊。
mso-hansi-font-family:"Times New Roman"">三、砂基透水磚透水時效過濾罩試驗:
1、將試樣放入干燥箱,烘干至質(zhì)量變化不超過0.1% mso-hansi-font-family:"Times New Roman"">;
2、將試樣在水中浸泡20min mso-hansi-font-family:"Times New Roman"">取出;
3、將過濾防護罩壓緊在試樣的上表面,向罩內(nèi)緩慢倒入攪拌均勻的模擬水樣250L mso-hansi-font-family:"Times New Roman"">;待試樣無明顯滲出水時,將其放入干燥箱中烘干至質(zhì)量變化不超過0.1% mso-hansi-font-family:"Times New Roman"">。
4、將過濾烘干的試樣取出放至室溫,浸泡20min mso-hansi-font-family:"Times New Roman"">取出,按透水速率試驗方法測試試樣的透水速率V1 mso-hansi-font-family:"Times New Roman"">;
5、如V1 mso-hansi-font-family:"Times New Roman"">大于或等于1.5mL/ "Times New Roman"">(min·cm2 mso-hansi-font-family:"Times New Roman"">),則重復以上步驟,直至第N "Times New Roman"">次透水速率Vn "Times New Roman"">小于1.5mL/ "Times New Roman"">(min·cm2 mso-hansi-font-family:"Times New Roman"">),N-1 "Times New Roman"">即為試樣的透水時效。