The Cooling Rule of Large Size Asphalt Mixture
[1]LIU Hong-ying,YE Song.The Cooling Rule of Large Size Asphalt Mixture[J].Journal of Zhengzhou University (Engineering Science),2013,34(03):68-71.[doi:10.3969/j.issn.1671-6833.2013.03.017]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34
Number of periods:
2013 03
Page number:
68-71
Column:
Public date:
2013-05-31
- Title:
- The Cooling Rule of Large Size Asphalt Mixture
- Keywords:
- large size asphalt mixture ; gradation ; temperature; rule ; construction
- CLC:
- U416.6l1
- Abstract:
- The maximum nominal particle size of large size asphalt mixture is generally greater than 26.5 mm.The asphalt mixture paving thickness is up to 12 ~ 18 cm.The construction technology of the large size asphaltmixture especially compaction technology are quite different.The paper evaluated the cooling law of differenttypes of large size asphalt mixture using the indoor simulated cooling temperature test. The results show thatlarge size asphalt mixture surface cooling rate was greater than HMA，temperature difference between the sur-face and the middle of the mix can reach 15 ~ 25 ℃， and then keep the surface temperature until the rollingfinishing temperature ,thus extending the effective compaction time;the large size asphalt mixture paved thick-ness larger ，thermal energy storage longer，and no sensitive to temperature segregation than the normal asphaltmixture. The environment temperature and paving thickness of large size asphalt mixture have a great influenceto cooling law ， while the gradation type of impact is relatively much smaller.
- References:
-
[1]JTGF40—2004，公路沥青路面施工技术规范[S]．北京：人民交通出版社，2004．魏建国，查旭东，郑健龙，等．[2]大粒径沥青混合料基层施工技术[J]．中外公路，2007，27(6)：62—65．
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Last Update:
1900-01-01