级配碎石混合料组成设计的试验研究

采用紧密嵌挤骨架-密实原则．对级配碎石混合料的组成设计进行系统的室内试验研究．并且在规范范围内设计了5种走向的级配类型．进行重型击实及振动碾压试验。可用以指导混合料的组成设计．并且有效地克服级配碎石基层永久变形大和弹性模量偏低的缺点。

Experiments and Research on Composition Design of Graded Macadam Mixtures

According to the principle of skeleton embed closely and t hi ckly, the systematic indoor experiments are taken to research the composition de sign of graded macadam mixtures, and five types of graded mixtures in specificat ion range are designed to take heavy compaction and vibration rolling experiment s. It can be used to guide the design of mixture and overcome effectually the di sadvantages that the permanent deformation of graded macadam base is large and i ts modulus of elasticity is lower.