Determine the bag of cement and the quantities of sand and gravel required for 20 cu. m. of concrete 1:2:4 mix with the following data: Materials Specific gravity Unit weight 1508 kg/m3 1684 kg/m3 1524 kg/m3 Cement Sand 3.10 2.65 Gravel 2.50 Assume 1 bag per 0.0283 m³ of concrete use 7 gallons of water per bag of cement.

Q: 1-What is the effect on physical properties of cement, if thel- residue of cement on B.S 90 micron…

A: 1. Residue on B.S 90micron sieve indicates fineness of cement.   If residue is more than 10% then…

Q: Given the Concrete Mix Ratio of 1:2:2.5, w/c = 0.48, mass of concrete per cubic meter is equivalent…

A: Given data: Concrete mix ratio=1:2:2.5 w/c =0.48 Mass of concrete per cubic meter=2355 kg per cubic…

Q: Grade of Specimen Mass of specimens (g) concrete 7 days 14 days 28 days Air Water Air Water Air…

A: We know, Density=MassVolume Here, volume = 100 x 100 x 100 = 106 mm3 = 0.001 m3  The density is…

Q: The following table represents a concrete mixture that has not been completely proportioned. The…

A: The water to cement ratio compares how much water versus cement is used in a concrete mix. A low…

Q: ou want to increase the sustainability of a concrete mixture by replacing 35% of the portland cement…

A: The specific gravity of ordinary portland cement is 3.15 which can be assumed as specific gravity of…

Types of Concrete

Concrete is the fundamental material used in civil engineering such as building materials for building structures. Concrete is an aggregate mixture of cement, sand, and fine and coarse rock pieces. The cement acts as a binding material that holds the compositions together, sets, and hardens with time. Apart from cement, there are other different types of binding materials used, such as lime concrete, bitumen, asphalt, and so on.