natural aggregate

And the compressive strength of a natural aggregate, higher than the simple broken recycled concrete.

抗压强度与天然骨料的相当，高于简单破碎粗再生混凝土。

The failure modes by shear of recycled aggregate concrete beams without stirrups are similar to the natural aggregate concrete beams without stirrups. Three failure types of recycled aggregate concrete beams are diagonal tension 、 shear-compression and diagonal compression.

再生混凝土无腹筋梁的破坏形式与普通混凝土无腹筋梁的破坏形式并无本质区别，仍然是斜拉破坏、剪压破坏、斜压破坏三种破坏形态。

In this paper, the concrete adding by sewer sludge by replacing of natural aggregate was prepared.

本文研究了以管沟污泥等量替代天然细集料制备水泥混凝土.

It describes the methodology for assessment of natural aggregate resources using remote sensing and airborne geophysics.

报告论述了遥感与大气地球物理学在自然聚合资源评价中的方法.