Meanwhile, while asphalt also  features aggregates like concrete, it has a different binding agent.

同时，虽然沥青也像混凝土一样具有骨料特征，但它具有不同粘合剂。

Vulcan Materials is the leader in the United States in aggregates.

Vulcan Materials 是美国骨料行业领军企业。

They've been doing the same material - concrete  - since Roman times and we're still doing it the same - a cement and aggregate mix - because  there is a lot of resistance to change.

自罗马时代以来，他们一直在使用相同材​​料——混凝土，而我们仍在使用相同材​​料——水泥和骨料混合物——因为改变很大。

It looks like it could be rammed Earth, which is a pretty ancient construction technique, very popular in drier and hotter parts of the world where you grab damp soil made from aggregates, sand, silt, clay and gravel into a formwork.

看起来像是夯土结构，这是一种相当古老建技术，在世界上较为干燥炎热地区非常流行。在这些地方，人们骨料、沙子、粉砂、黏土和砾石组成湿润土壤填入模板中进行夯。

A lot of the medieval buildings that are near the coast, the mortars are formed with aggregate taken from the beaches – so, crushed shell, crushed oyster shell, cockle shell.

许多靠近海岸中世纪建，其迫击炮灰都是用从海滩上采集骨料制成——碎贝壳、碎牡蛎壳、碎贝壳。

The aggregates themselves were generally sand or crushed volcanic rock, which, in the case of the pantheon, included pumice to make the structure lighter.

骨料本身通常是沙子或碎火山岩，而在万神殿情况下，还包括浮石以使结构更轻。

Concrete is a combination of coarse stone and sand particles, called aggregates, that mix with cement, a powdered blend of clay and limestone.

混凝土是粗石和沙粒（称为骨料）与水泥混合而成，而水泥则是粘土和石灰石粉末混合制成。

Concrete consists largely of a selection of rocks, known as aggregates.

混凝土主要精选岩石组成，这些岩石被称为骨料。

And aggregates are what is inside like concrete and asphalt.

而骨料就是混凝土和沥青等材料中成分。

Several recent studies have shown that the ash not only contributed to the concrete's strength and durability, but also enhanced cohesion between the aggregate particles after the mixture had been cured.

最近一些研究表明， 火山灰不仅提升了混凝土强度和耐久性，还在混合物固化后增强了骨料颗粒之间粘结。

The sand we use for concrete is this coarse, chunky aggregate that helps bind and strengthen concrete.

我们用来制作混凝土沙子是这种粗糙、颗粒状骨料，有助于使混凝土粘结并增强其强度。

Aggregates account for between 60 and 75% of a given concrete mix, and are bound together  with a paste, which makes up the remainder.

骨料占给定混凝土混合物 60% 到 75%，并与浆料粘合在一起， 其余部分浆料粘合。

As Vitruvius himself describes, the cement Romans used to bind the aggregates of concrete was a mixture of lime and volcanic ash.

正如维特鲁威本人描述，罗马人用来粘合混凝土骨料水泥是石灰和火山灰混合而成。

The researchers studied how leucite, a potassium-rich volcanic mineral, dissolved in the water and reconfigured the chemical bonds between the cement and the aggregates, strengthening the interfaces between them, and making the whole structure more resilient.

研究人员研究了富含钾火山矿物白榴石如何在水中溶解，并重新配置水泥与骨料之间化学键，从而加强了它们之间界面，使整个结构更加坚韧。

The researchers studied how lucite, a potassium-rich volcanic mineral, dissolved in the water and reconfigured the chemical bonds between the cement and the aggregates, strengthening the interfaces between them and making the whole structure more resilient.

研究人员研究了富含钾火山矿物——聚碳酸酯，在水中溶解后如何重新配置水泥与骨料之间化学键，从而加强了它们之间界面， 使整个结构更加坚韧。