沥青发泡原理与发泡特性的试验研究.pdfVIP

7 2 V l. 7, N . 2 2004 6 JOURNAL OF BUILDING MAT ERIA LS Jun. , 2004 : 2004) 1 2 1 2 2 拾方治, 赫振华 , 吕伟民, 徐 斌 , 朱良镨 ( 1. , 200092; 2. , 200120) : 简述了泡沫沥青的发泡原理, 提出了沥青发泡特性的评价 标和影响因素. 采用德 国Wirtgen 公司生产的WLB10 泡沫沥青实验机, 对4 种常用沥青进行了发泡试验. 试验 结果表明: 沥青品种发泡温度和发泡用水量是影响泡沫沥青发泡特性的主要因素; 每种 沥青的发泡效果与发泡温度( 140 以上) 没有必然的联系, 在 150 左右( 国外一般认为 在180 左右) 就能达到较好的发泡效果. 按照一定的评价原则对4 种沥青的发泡特性进 行了比较, 并确定了它们的最佳发泡条件, 即发泡温度在 150 左右, 用水量在 1. 5% 左 右. 该条件的得出为拌制高质量的泡沫沥青混合料提供了一定的理论依据. : 沥青; 发泡特性; 泡沫沥青; 试验研究 : U4 16. 2 17 : A Principle and Study of Bitumen Foaming 1 2 1 2 2 SH I Fangz hi , H E Zhenhua , L U Weimi n , X U B i n , ZH U L iangp u ( 1. Sch l f Traffic Transp rtati n, T ngji University , Shanghai 200092, China; 2. Shanghai Pud ng R ad Bridge C nstructi n C . , Ltd, Shanghai 200120, China) Abstract: The principle f bitumen f aming, the evaluati n parameters and the fact rs influencing f aming characteristics are intr duced in this paper. The lab rat ry tests f f ur kinds f p pular bitu men were carried ut n the WLB10 Wirtgen lab rat ry f aming machine. The test results indicate that the type f bitumen, f aming temperature and quantity f f aming w ater are main fact rs that in fluence the f aming characteristics f bitumen. Furtherm re, the phen men n that there is n certain relati nship betw een f aming quality and bitumen temperature ( ab ve 140 ) is disc vered, and at the f aming temperature f ab ut 150 better f aming quality can be btained. In terms f s me e valuati n criteria, the f aming characteristics f f ur kinds f