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

凝土主要由精选的岩石组成，这些岩石被称为。

Bioconcrete actually comes in many varieties, depending on the aggregate employed.

生物凝土实际上有很多种，具体取决于所使用的。

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

同时，虽然沥青也像凝土一样具有特征，但它具有不同的粘合剂。

When the crystal-rich gloop that results is mixed with an aggregate, the product is " bioconcrete" .

当产生的含晶体的胶状物与合时，该产品就是“生物凝土”。

Construction workers pour the pellets into conventional cement when mixing it with water and aggregate.

建筑工人在将颗粒与水和合时将其倒入传统水泥中。

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

凝土是粗石和沙粒的组合，称为，与水泥合，水泥是粘土和石灰石的粉末合物。

Better, then, not to generate it in the first place, by remodelling the way the aggregates that are concrete's other ingredient are bound together.

那么，最好不要首先生成它，方法是重塑作为凝土其他成分的结合在一起的方式。

When water gets added to this mix, the cement forms a paste and coats the aggregates, quickly hardening through a chemical reaction called hydration.

当向这种合物中加入水时，水泥会形成糊状物并覆盖在上，通过称为水合作用的化学反应迅速硬化。

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

占给定凝土合物的 60% 到 75%，并与浆粘合在一起， 其余部分由浆粘合。

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.

许多靠近海岸的中世纪建筑，其迫击炮灰都是用从海滩上采集的制成的——碎贝壳、碎牡蛎壳、碎贝壳。

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的材​​——凝土，而我们仍在使用相同的材​​——水泥和的合物——因为改变的阻力很大。