A trial mix is required for a pavement slab being constructed exposed to freezing and thawing as well as deicing agents . The trial mix design strength is 32 MPa (including overdesign) with a 75 mm slump. For the sand; FM = 2.80 and its absorption is 1.5%. The coarse aggregate has a nominal maximum size of 25 mm with an absorption of 1.6% and a dry rodded density of 1460 kg/m3. Determine the mix design amounts for the concrete if the coarse aggregate contains 6% water. (keep all calculations and answers to one decimal place except where indicated. That is, round to one decimal place) Design Water = kg/m3 Water to Cement (W/CM) ratio = (two decimal places) Cement Content = kg/m3 Volume of coarse aggregate per unit volume of concrete = (two decimal places) Estimated total mass of concrete = kg/m3 Design mass of coarse aggregate = kg/m3 Actual mass of coarse aggregate = kg/m3 Actual mass of fine aggregate = kg/m3 Actual mass of water added = kg/m3

A trial mix is required for a pavement slab being constructed exposed to freezing and thawing as well as deicing agents . The trial mix design strength is 32 MPa (including overdesign) with a 75 mm slump. For the sand; FM = 2.80 and its absorption is 1.5%. The coarse aggregate has a nominal maximum size of 25 mm with an absorption of 1.6% and a dry rodded density of 1460 kg/m3. Determine the mix design amounts for the concrete if the coarse aggregate contains 6% water. (keep all calculations and answers to one decimal place except where indicated. That is, round to one decimal place) Design Water = kg/m3 Water to Cement (W/CM) ratio = (two decimal places) Cement Content = kg/m3 Volume of coarse aggregate per unit volume of concrete = (two decimal places) Estimated total mass of concrete = kg/m3 Design mass of coarse aggregate = kg/m3 Actual mass of coarse aggregate = kg/m3 Actual mass of fine aggregate = kg/m3 Actual mass of water added = kg/m3

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter18: Bituminous Materials

Section: Chapter Questions

Problem 5P: Given the specifications for an asphaltic concrete mixture and the results of a sieve analysis,...

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Concept explainers

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.

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Design Water = kg/m³

Water to Cement (W/CM) ratio = (two decimal places)

Cement Content = kg/m³

Volume of coarse aggregate per unit volume of concrete = (two decimal places)

Estimated total mass of concrete = kg/m³

Design mass of coarse aggregate = kg/m³

Actual mass of coarse aggregate = kg/m³

Actual mass of fine aggregate = kg/m³

Actual mass of water added = kg/m³

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A mix design for a major sidewalk construction project is required. The concrete will not be reinforced, but will be exposed to freezing and thawing with chlorides. The trial mix strength is 32 MPa (including overdesign) with a 75 mm slump. For the sand; FM = 2.60 and its absorption is 1.2%. The coarse aggregate has a nominal maximum size of 19 mm with an absorption of 1.6% and a dry rodded density of 1720 kg/m3. Determine the mix design amounts for the concrete if the coarse aggregate contains 3% water. (keep all calculations and answers to one decimal place except where indicated. That is, round to one decimal place) Design Water = kg/m3 Water to Cement (W/CM) ratio = (two decimal places) Cement Content = kg/m3 Volume of coarse aggregate per unit volume of concrete = (two decimal places) Estimated total mass of concrete = kg/m3 Design mass of coarse aggregate = kg/m3 Actual mass of coarse aggregate = kg/m3 Actual mass of fine aggregate = kg/m3 Actual mass of water added =…
QUESTION 2 A mix design for a major sidewalk construction project is required. The concrete will not be reinforced, but will be exposed to freezing and thawing with chlorides. The trial mix strength is 32 MPa (including overdesign) with a 75 mm slump. For the sand; FM = 2.60 and its absorption is 1.2%. The coarse aggregate has a nominal maximum size of 19 mm with an absorption of 1.6% and a dry rodded density of 1720 kg/m3. Determine the mix design amounts for the concrete if the coarse aggregate contains 3% water. (keep all calculations and answers to one decimal place except where indicated. That is, round to one decimal place) Design Water = kg/m3 Water to Cement (W/CM) ratio = (two decimal places) Cement Content = kg/m3 Volume of coarse aggregate per unit volume of concrete = (two decimal places) Estimated total mass of concrete = kg/m3 Design mass of coarse aggregate = kg/m3 Actual mass of coarse aggregate = kg/m3 Actual mass of fine aggregate = kg/m3 Actual mass…
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(b) The sample weight of fine aggregate at different conditions are as follows: Sample Weight (g) 260 Condition of aggregate Initial sample Saturated Surface Dry Oven-Dry 240 200 Determine i) Total moisture content ii) Absorption iii) Free moisture content.
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