Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
4th Edition
ISBN: 9780137505586
Author: Michael Mamlouk, John Zaniewski
Publisher: PEARSON+
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Chapter 9, Problem 9.47QP
To determine
The most common polymer used for modifying asphalt cement and describe the interaction that occurs when asphalt and SBS are mixed.
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Several types of fillers, such as crushed fines, portland cement, lime, fly ash, and carbon black, can be added to asphalt concrete. Fillers are used to satisfy gradation requirements of materials passing the 0.075 mm sieve, increase stability, improve bond between aggregates and asphalt, or fill the voids and thus reduce the asphalt required.
Why angular and rough aggregate is good for Asphalt concrete? Explain the answer by relating the texture to other properties of aggregate.
A portland cement concrete mix requires mixing sand having a gradationfollowing the midpoint of the ASTM gradation band (Table 5.4) and gravelhaving a gradation following the midpoint of size number 467 of the ASTMgradation band (Table 5.5) at a ratio of 2:3 by weight. On a 0.45 power gradation chart, plot the gradations of the sand, gravel, and the blend. Is the gradation of the blend well graded? If not, what would you call it?
Chapter 9 Solutions
Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
Ch. 9 - Prob. 9.1QPCh. 9 - Prob. 9.2QPCh. 9 - Prob. 9.3QPCh. 9 - Prob. 9.4QPCh. 9 - Prob. 9.5QPCh. 9 - Prob. 9.6QPCh. 9 - Prob. 9.7QPCh. 9 - What are the engineering applications of each of...Ch. 9 - Prob. 9.9QPCh. 9 - Prob. 9.10QP
Ch. 9 - Prob. 9.11QPCh. 9 - Prob. 9.12QPCh. 9 - Prob. 9.13QPCh. 9 - Prob. 9.14QPCh. 9 - Prob. 9.15QPCh. 9 - Prob. 9.16QPCh. 9 - Prob. 9.17QPCh. 9 - Prob. 9.18QPCh. 9 - What are the objectives of the asphalt concrete...Ch. 9 - Prob. 9.20QPCh. 9 - Prob. 9.21QPCh. 9 - Prob. 9.22QPCh. 9 - Prob. 9.23QPCh. 9 - Prob. 9.24QPCh. 9 - Prob. 9.25QPCh. 9 - An asphalt concrete mixture includes 94% aggregate...Ch. 9 - Prob. 9.27QPCh. 9 - Prob. 9.28QPCh. 9 - Prob. 9.29QPCh. 9 - Prob. 9.30QPCh. 9 - Based on the data shown in Table P9.31, select the...Ch. 9 - Based on the data in Table P9.32, determine the...Ch. 9 - Given the data in Table P9.33, select the blend...Ch. 9 - The Marshall method of mix design has been widely...Ch. 9 - Prob. 9.35QPCh. 9 - Prob. 9.36QPCh. 9 - Prob. 9.37QPCh. 9 - Prob. 9.38QPCh. 9 - Prob. 9.39QPCh. 9 - Prob. 9.40QPCh. 9 - Prob. 9.41QPCh. 9 - Prob. 9.42QPCh. 9 - Prob. 9.43QPCh. 9 - What is the purpose of adding fly ash to asphalt...Ch. 9 - Prob. 9.45QPCh. 9 - Prob. 9.47QPCh. 9 - Prob. 9.48QP
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- why do we need to know the Specific Gravity and Absorption of Fine Aggregate, Surface Moisture of Fine Aggregate, and how it is important in concretearrow_forwardConcrete is required for a building foundation that is placed on a soil with high chloride content. The design calls for a minimum rebar spacing of 100 mm and a concrete cover of 75 mm. Which one of the following sizes is considered an acceptable nominal maximum size for aggregates? O A) 43 mm O B) 39 mm O9 28 mm O D) 49 mm A concrete pavement in Alberta will be exposed to freeze-thaw and de-icing salts during its service life. Which of the following exposure classes best describes the environmental conditions that the concrete will be exposed to? OA F-2 O B) A-2 O D) S-2 Strength of the normal weight concrete depends mainly on: OA) Strength of the aggregate O B) Mixing time OC) Purity of the mixing water O D) Water to cement ratio A fine broom finish is done only for aesthetic purposes. OA) True O B) False Oarrow_forwardWhat are the organic substances in the production of warm asphalt? Please explain with reference.arrow_forward
- An asphalt concrete specimen has a mass in air of 1353.9 g, mass in water of 792.4 g, and saturated surface-dry mass of 1342.2 g. Calculate the bulk specific gravity of the specimen.arrow_forwardAnswer the question false or true Correspondence in the degrees of penetration between several types of solid asphalt at a temperature of 25 degrees does not mean complete compatibility between these types, as the behavior may differ at high temperatures and at lower temperaturesarrow_forwardGiven four different types of aggregates to be used to produce a blended aggregate for use in the manufacture of asphaltic concrete, determine the bulk specific gravity of the aggregate mix.arrow_forward
- Concrete was mixed with the following ingredients: 20.7 kg of cement, 39.2 kg of sand, 60.9 kg of gravel, and 14.6 kg of water. The sand has a moisture content of 3.3% and an absorption of 4.7%. The gravel has a moisture content of 3.6% and an absorption of 4.5%. Since water absorbed in the aggregate does not react with the cement or improve the workability of the plastic concrete, what is the water–cement ratio of this mix according to the American Concrete Institute’s weight mix design method? If a water–cement ratio of 0.5 is required using the same materials and ingredients but different amount of mixing water, what is the mass of the mixing water to use?arrow_forwardWhich of the following materials is/are a good weight additive for cement (include both weight increase and weight reduction)? a. Bentonite b. Barite c. Hematite d. Sand e. Nitrogenarrow_forwardConcrete was mixed with the following ingredients: 20.7 kg of cement, 39.2 kg of sand,60.9 kg of gravel, and 14.6 kg of water. The sand has a moisture content of 3.3% andan absorption of 4.7%. The gravel has a moisture content of 3.6% and an absorptionof 4.5%. Since water absorbed in the aggregate does not react with the cement or improve the workability of the plastic concrete, what is the water–cement ratio of this mix according to the American Concrete Institute’s weight mix design method? If a water–cement ratio of 0.5 is required using the same materials and ingredients but different amount of mixing water, what is the weight of the mixing water to use?arrow_forward
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