Cement Trees, 1989.

They built a concrete home, but the family kept the key to their house in Nazareth.

The occupiers have decided to implement the Israeli style ghettos of imprisoning people in concrete walls.

For a mixture of 4 1 cement to water, it could be said that the ratio of cement to water is 4 1, that there is 4 times as much cement as water, or that there is a quarter (1 4) as much water as cement..

In cities, pollen particles fall on concrete and asphalt rather than being absorbed by the soil.

It was a powerful cement derived from pozzolana, and soon supplanted marble as the chief Roman building material and allowed many daring architectural forms.

In order to accomplish this, the existing facade had to be demolished, the new area cemented, and the metallic structure covered in brick built, always with the same technique and look.

Grout is generally a mixture of water, cement, sand, often color tint, and sometimes fine gravel (if it is being used to fill the cores of concrete blocks).

Increasing span lengths increases the usable unencumbered floorspace in buildings diminishing the number of joints leads to lower maintenance costs over the design life of a building, since joints are the major focus of weakness in concrete buildings.

Iraq, for instance, is now plunged in darkness after it had built a nuclear reactor in the 80s. They are now using a local invention and have returned to building homes out of gypsum instead of cement so that they could adapt to their environment.