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special concrete and mortar ppt
#1

i need that ppt pls show me
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#2
Special mortars: the following are tiles of various types of special mortars that are used for certain conditions:

1. mortar resistant to fire

2. light mortar

3. packing mortar

4. mortar sound absorption

5. X-ray shielding mortar

1. Fire resistant mortar: this mortar is prepared by adding aluminous cement to the finely ground powder of the bricks. The usual proportion is 1 part of aluminous cement to 2 parts of refractory brick powder. This mortar is fire resistant and is therefore used with refractory bricks for lining kilns, stoves, ovens, etc.

2. Light Mortar: This mortar is prepared by adding materials such as saw dust, wood dust, etc. to lime mortar or cement mortar. Other materials that can be added are asbestos fibers, jute fibers, coconut fiber, etc. This mortar is used in soundproof and heat resistant constructions.

3. Packing mortar: For packing oil wells, special mortars possessing properties of high homogeneity, water resistance, predetermined setting time, ability to form water-resistant plugs in cracks and rock holes, resistance to pressure water from the subsoil, etc. to form

4. Mortar Sound Absorption: To reduce the noise level, the plaster that absorbs the sound is formed with the aid of a mortar that absorbs the sound. The apparent density of said mortar varies from 6 to 12 kN / m 3 and the bonding materials used in its composition may be Portland cement, lime, gypsum, slag, etc. The aggregates are selected from light porous materials such as pumice, ash, etc.

5. X-ray protection mortar: This type of mortar is used to provide plaster coating to the walls and ceiling of X-ray enclosures. It is a heavy type of mortar with a bulk density of more than 22 kN / m3. The aggregates are obtained from heavy rocks and suitable additives are added to improve the protective property of said mortar.
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