Calculate the required adjustment to the amount of mixing water per cubic yard of coffee to maintain a combatant w/c ratio. Mention if water is added or removed from the mixture. The concrete producer plans to use aggregate from the stockpile: 1920 Ibs/yd^3 coarse aggregate and 1160 Ibs/yd^3 of fine aggregates, properties of aggregate are: Coarse aggregate: Absorption capacity= 3.5% Total moisture3D 4.3%. Fine aggregate: Absorption capacity= 1.4% Total moisture= 0.8%

Calculate the required adjustment to the amount of mixing water per cubic yard of coffee to maintain a combatant w/c ratio. Mention if water is added or removed from the mixture. The concrete producer plans to use aggregate from the stockpile: 1920 Ibs/yd^3 coarse aggregate and 1160 Ibs/yd^3 of fine aggregates, properties of aggregate are: Coarse aggregate: Absorption capacity= 3.5% Total moisture3D 4.3%. Fine aggregate: Absorption capacity= 1.4% Total moisture= 0.8%

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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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.
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Given the data in Table P9.33, select the blend and the design binder contentfor a Superpave design aggregate structure for a 5 million ESAL and a 19 mmnominal maximum aggregate size.
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Aggregate from two stockpiles, A and B having coarse aggregate angularity (crushed faces) of 55% and 75% were blended at a ratio of 45:55 by weight, respectively. The percent materials passing the 4.75 mm sieve was 30% and 60% for stockpiles A and B, respectiIvely. What is the percent of crushed faces of the aggregate blend? Select one: O a. 63.22% O b. 65.45% O c. 59.32% O d. 70.26%
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Total weight of Aggregate = 5000 grams %D Retained weight of Aggregate after L os Angeles Abrasion test =3978 grams Calculate LA abrasion value Select one: O a. 20.4 % O b. 79% O c. 54% O d. 98.8%
5.10 Samples of coarse aggregate from a stockpile are brought to the laboratory for determination of specific gravities. The following weights are found: Mass of moist aggregate sample as brought to the laboratory: 5,298 g Mass of oven dried aggregate: 5,216 g 5.11 5.12 5.13 5.14 Mass of aggregates submerged in water: 3,295 g Mass of SSD (Saturated Surface Dry) Aggregate: 5,227 g Find a. The aggregate bulk dry specific gravity b. The aggregate apparent specific gravity c. The moisture content of stockpile aggregate (report as a percent) d. Absorption (report as percent) Base course aggregate has a target dry density of 1917 kg/m³ in place. It will be laid down and compacted in a rectangular street repair area of 600 m × 15 m × 0.15 m. The aggregate in the stockpile contains 3.1% moisture. If the required compaction is 95% of the target, how many tons of aggregate will be needed? Calculate the percent voids between aggregate particles that have been com- pacted by rodding, if the…
(c) Table 1 shows the mass of fine aggregates used to conduct a specific gravity test. Calculate the; i) Dry bulk specific gravity ii) SSD bulk specific gravity i) Apparent specific gravity iv) Aggregate absorption. Table 1 Mass of Aggregate 600 g SSD Mass of Aggregate 589 g Mass of pycnometer with water 710 g Mass of pycnometer with water and aggregate 1090 g Mass of aggregate at cool temperature 498 g