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USING THE DYNAMIC MODULUS TEST TO ASSESS THE MIX STRENGTH OF HMA.
| 题名： | USING THE DYNAMIC MODULUS TEST TO ASSESS THE MIX STRENGTH OF HMA. |
| 作者： | Harman-T |
| 关键词： | American-Association-of-State-Highway-and-Transp-Officials; Dynamic-modulus-of-elasticity; Dynamic-modulus-test; Hot-mix-paving-mixtures; Interstate-highways; Laboratory-tests; Mix-design; Strength-of-materials; Superpave-; Test-procedures; United-States |
| 摘要： | Highway agencies have long searched for a mechanistically-based lab test to reliably determine the strength and load-resistance of hot-mix asphalt (HMA) mixes. The dynamic modulus (E*) test, known to some researchers since the 1960s, is a possible solution to this search. Currently, 2 major efforts in pavement research, revising the AASHTO Guide to the Design of Pavement Structures and Modeling for Superpave, rely on the use of E*. The current draft of the upcoming 2002 revision of the AASHTO Guide to the Design of Pavement Structures uses E* to characterize mixes used on interstate highways and other high-volume highways that require superior load resistance. Testing is currently underway to make sure that the E* test is practical for use by the states, with reliable and usable results. The goal is the eventual adoption of the E* protocol as an approved AASHTO procedure. This article describes dynamic modulus, discusses the advantages of the E* test method, and details how the test is conducted. |
| 总页数： | Public Roads. 2001/05. 64(6) pp6-8 (1 Phot., 1 Fig.) |
| 报告类型： | 科技报告 |
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