According to ACI 211 we require a mix with a mean 28-day compressive strength (measured on standard cylinders) of 40MPa and a slump of 25 mm, Q1 ordinary Portland cement being used. The maximum size of well-shaped, angular aggregate is 10 mm, its bulk density is 1700 kg/m3, and its specific gravity is 2.7. The available fine aggregate has a fineness modulus of 2.60 and a specific gravity of 2.58. No air entrainment is required.

Q: ASTM C127 is the Standard Test Method for Density, Relative Density (Specific Gravity), and…

A: Given data in question  ASTM C127 For density,  Relative density and absorption capacity To find out…

Q: sp wt of SSD CA = 6135 g wt of submerged CA = 3901 g wt of oven-dry CA = 6008 g Calculate the bulk…

A: A=weight of oven dry coarse aggregate B=weight of SSD coarse aggregate C=weight of submerged coarse…

Q: gravity=2.60, SSD Bulk Specific Gravity=2.63, apparent Specific gravity= 2.68, percent…

A: Specific gravity generally gives the information regarding the denseness of the aggregates.So,more…

Q: In the manufacture of Portland cement, gypsum is added to the clinker and they are pulverised…

A: Solution- a)  i) Gypsum is a long-lasting admixture. ii) The addition of gypsum to the clinker…

Q: 1000 g coarse aggregate sample taken from the site showed the following properties in the…

A: Bulk Dry specific gravity is given by ;Bulk Dry specific gravity = Bulk Dry specific gravity = Bulk…

Q: Coarse aggregate is placed in a rigid bucket and rodded with tamping rod. The volume of the bucket…

A:

Q: Example 2 : Design a concrete mix to implement a concrete slab (exposed to sever conditions moisture…

A: f'c = 30 MPaS = 4 MPa FM = 2.4 Apparent density = 1500 kg/m3

Q: The wet mass of an aggregate sample is 583g and its dry mass is 575g. The test shows the absorption…

A: Finding out the type of moisture condition.

Q: Design a concrete mix for the following performances and ingredients: • Compressive strength at 28…

A: Consider the given data Density of CA=1600 kg/m3   AssumedSp Gr. of cement=3.15  AssumedSp Gr of…

Q: The relative amounts of the four chemicals in the final cement depends on the desired properties of…

A: High Early Strength cement- For gaining strength in the early stages proportion of C3S is increased.…

Q: (3) The sieve analysis results of 500g fine aggregate are listed as below: Sieve size /mme 54 2.5…

A:

Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.