Cha_Building Tech

Its is made from materials whichmust contain the proper proportions of lime, silica,alumina and iron components.

• Portland cement

• masonry cement

• oil well cement

• waterproofed portland cement

Artificial stone made by binding together particles of some inert material with a paste made of cement water.

• aggregate

• concrete

• cement

• sand

Concrete mixture used in concrete under water and retaining walls.

• class AA

• class A

• class B

• class C

Concrete mixture used in footings, columns, beams and rc slabs.

• class AA

• class A

• class B

• class C

Concrete mixture used in concrete plant boxes.

• class AA

• class A

• class B

• class C

An admixture which is used to speed up the initial set of concrete.

• retarders

• accelerators

• concrete additives

• air- entraining agents

To delay or extend the setting time of the cement paste in concrete.

• Retarders

• accelerators

• concrete additives

• air-entraining agents

Basic ingredient in clay

• brick

• sand

• aggregates

• clay

Materials sometimes used in structures where it is desirable to avoid high temperature or in structures exposed to seawater or water containing sulfates.

• chemical hardeners

• pozzolanic admixtures

• set-inhibiting agents

• concrete products

Made by bonding together thin layers of wood in a way that the grain of each layer is at right angles to the grain of each adjacent layer.

• plywood

• veneer

• chip board

• particle board