Which equipment is used in the laboratory to determine asphalt cement high PG according to Superpave mix design Bending Beam Rheometer (BBR) Binder Penetration Dynamic Shear Rheometer (DSR)

Q: When tested, a 15 cm cube concrete specimen showed lower compressive strength compared to a 10 cm…

A: Given, when tested, a 15 cm cube concrete specimen showed lower compressive strenght compared to a…

Q: Absorption of coarse aggregate 1.8% Moisture content in coarse aggregate 2.3% Dry weight of fine…

A: Amount of water contributed by coarse =MC-ABS×WTWC=0.023-0.018×1500=7.5lb

Q: The mass of fine aggregate B has been reduced and weighed to conduct an aggregate test shown in…

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Q: Create a design mix using the ACI DESIGN MIX PROCEDURE with the following parameters: Air Entrained…

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Q: 7. As the fineness modulus of the sand used in a concrete mix increases the ratio of fine aggregate…

A: Fineness modulus of aggregates represents the average size of the particles in the aggregate by an…

Q: 51. Describe the process for the multiple stress creep recovery (MSCR) test on asphalt binder.

A: The Multiple Stress Creep Recovery (MSCR) test is a procedure used to evaluate the high-temperature…

Q: Determine the specific gravity of combined aggregate in a bituminous mix having maximum theoretical…

A: Given data, Maximum theoretical specific gravity of mix Gt = 2.4 % by weight of botumen Wb = 8…

Q: It is given that an aggregate mix has 260 grams of coarse aggregates and 240 grams of fine…

A: Given-260 gm of coarse aggregates, G=2.6240 gm of fine aggregates, G=2.4Bulk specific gravity of…

Q: Design the concrete mix according to the following conditions: Design environment Pavement,…

A: Calculating target strength: fck'=fck+1.65Sfck'=fck+1.65×1.7=23.81 MPa Taking the water-cement…

Q: Laboratory specific gravity and absorption tests are run on two coarse aggre-gate sizes, which have…

A: Given:  Aggregate A: Bulk specific gravity = 2.814 Absorption = 0.4, Aggregate B: Bulk specific…

Q: In a Marshall sample, the theoretical specific gravity of mix is 2.45. The specific gravity of…

A: given- theoretical specific gravity of mix-Gt=2.45specific gravity of-coarse aggregate G1=2.67fine…

Q: Most cement slurries will contain some additives to modify the properties of the slurry to produce a…

A: Given data  Retarders Which delays the initial setting time of the cement slurry.

Q: Answer by true or false for the following Using alkaline water in mixing concrete reduces the…

A: The alkali-aggregate reaction is caused mainly due to the OH- ions associated with alkalies. The…

Q: Which of the following is a common binder in the production of asphalt concrete? A) Cement B)…

A: Binding materials used in construction work are materials or substances that hold other materials…

Q: A sample of coarse aggregate was tested in a laboratory to find its moisture content. The wet weight…

A: Dry weight=5235.1gmWet weight=5403.5gmMoisture content=Wwet-WdryWdry×100Free water=MC-Absorption

Q: The mixture maximum specific gravity at 5.0 % asphalt binder content is 2.495. The asphalt specific…

A: To Find :- Gse :- effective specific gravity Given data:- Gmm  = 2.495 Gb = 1.030 Pb = 5%

Q: Aggregate is one of the main materials used in the production of concrete and its physical…

A: In concrete more than 70% volume is filled by aggregate hence if any problem in aggregate then it…

Q: The following results were obtained for an asphalt binder. Determine if the binder meets the…

A: To determine -  If the binder meets the Superpave specifications for the followinga) Rutting b)…

Q: We require a mix with a mean 28-day compressive strength of 28 MPa. The slump is selected to be 40…

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Q: It is given that an aggregate mix has 260 grams of coarse aggregates and 240 grams of fine…

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Q: Sieve analysis test for fine aggregates was performed on a sample of fine aggregates and produced…

A: Given, Sieve analysis data

Q: High Soundness value for the aggregate testing provide better resistance can to disintegration. True…

A: True.

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

A: Given data: Volume of bucket=20,000 cm3. Weight of aggregate= 400N. Bulk specific gravity of the…

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

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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: Questions 30 is based on the information below: An asphalt concrete mix design has the following…

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Q: quantity of (cement, fine aggregate, coarse aggregate and water) for 1m³

A: Solution: Choice of slump = 45 mm Choice of maximum size of aggregate = 28 mm Estimate of water…

Q: The raw materials used in Portland Cement production are:

A: Portland cement: Portland cement is a calcium silicate cement made by firing a well-homogenized and…

Q: When a sample subjected to the procedure of ASTM C40 produces a color darker than the standard…

A: Answer: The test sample shell have a mass of about approximately 450g and be taken from the larger…

Q: Sand bulking occurred due to the addition of water lower than the surface saturated dry condition of…

A: To be discussed  Sand property

Q: Although the constituents of concrete (aggregate and hydrated cement paste) behave in a linear…

A: Although aggregate and hydrated cement paste have linear stress-strain curves but the concrete…

Q: 6. What is the difference between a maximum size aggregate and a nominal maximum size aggregate? 7.…

A: #6 what is the difference between maximum aggregate size and nominal maximum aggregate size??…

Q: Depending on the properties of the different chemicals and their relative composition, identify the…

A: Tri Calcium Aluminate (3CaO.Al2O3) or C3A is responsible for the flash setting of the cement and…

Q: Cement is one of the most important material in building construction. However, as it is a…

A: Cement can be manufactured either from natural cement stones or artificially by using calcareous and…

Q: Q1. (a) UT Table Q1 (a) shows the compound compositions and fineness of Portland cement. Compare and…

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Q: In the Marshall method of mix design, the filler, bitumen, coarse aggregates and fine aggregates…

A: Marshall method of mix design-Specific gravity values-Mixing ratios-The theoretical specific gravity…

Q: 1. Plastic shrinkage cracking vary in length (about , mm). 2. In case that maximum size of aggregate…

A: (Disclaimer: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: In a Marshall sample, the bulk specific gravity of mix and aggregates are 2.424 and 2.644…

A: Given Data Bulk specific gravity of mix (Gm) = 2.424 Bulk specific gravity of aggregate (Ga) =…

Q: for the asphaltic material, the strain-time relationship , determined as follows under a shear…

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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.