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

See similar textbooks

Similar questions

For the given concrete mix design below, calculate the field weight of the ingredients in kg's if the absorption capacities of both aggregates are 1%, total moisture content of coarse aggregate is 2% and the total moisture content of fine aggregate is 4%? Ingredient Weight in kg per m³ Cement 300 Water 150 1000 800 SSD Coarse aggregate SSD Fine aggregate Fine aggregate: Seç... ÷ Coarse aggregate: Seç... Seç Water: + ÷
Three types of aggregate have sieve analysis as given below. Combine these types of aggregate to meet with specification and draw the specification limits with combined mix on semi-log chart below. Sieve Specif. Agg. A Agg. B Agg. C % (in) ½ (in) 100 80-100 100 100 100 77 100 100 3/8 (in) 70-90 57 94 100 No.4 45-65 22 81 100 No.8 No.30 33-47 18-29 2.8 1.1 66 49 100 100 No.50 13-23 0 36 98 No. 100 8-16 0 24 93 No.200 6-10 0 12 80
A concrete mix required for construction of an industrial building. Cement is PKC32,5. Specific gravity of cement is 31.5 kg/dm3. Vibrator will be used during the placement of concrete. The grading analysis of bulk aggregate as follows. Specific gravities and bulk density of aggregates as follows: :2.60 kg/dm3 Coarse Aggregate :2.65 kg/dm³ :2.72 kg/dm 1.30 kg/dm3 1.70 kg/dm3 1.55 kg/dm3 Sand Pebble Target strength has been desired as 20 + 5 = 25 MPa Workability of the resulting concrete will be Plastic Minimum amount cement will be 350 kg/m³ Grading of the bulk aggregate at the site: Sieve size (mm) 16 8 4 1 0.5 0.25 Cumulative Passing (%) 100 64.8 48.7 32.8 24.0 12.0 4,5 Design a concrete mix which is already solved by using Eprical Formulas according to ACI and TS and compate the results,
Concrete technolog/Sieve Analysis aggregate The sieve results of a batch of aggregate are as follows: retained on 1.5" sieve: 0.3 kg: retained on I" sieve: 1.2 kg: retained on 0.75" sieve: 7.6kg: retained on 0,5" sieve: 6.2 kg; retained on 3/8" sieve: 4.2 kg; retained on No. 4 sieve: 0.8 kg; retained on No. 8 sieve: 0.1 kg. Calculate the fineness modulis for the aggregate. Is it coarse or fine aggregate?
Three types of aggregate have sieve analysis as given below. Combine these types of aggregate to meet with specification and draw the specification limits with combined mix on semi-log chart below. Sieve Specif. Agg. A Agg. B Agg. C Percent Passing % % (in) 100 100 100 100 ½ (in) 80-100 77 100 100 3/8 (in) No.4 70-90 45-65 57 22 94 81 100 100 No.8 No.30 No.50 33-47 18-29 2.8 1.1 49 100 66 100 Seive opening (mm) 13-23 0 36 98 No. 100 8-16 0 24 93 No.200 6-10 0 12 80
Q1: Prepare mix design for given data • The 28-day compressive strength should be 34 MPa, The slump should be between 75 mm and 100 mm and the maximum aggregate size should not exceed 19 mm The properties of the materials are as follows: • Cement : Type I, specific gravity = 3.15 • Coarse Aggregate: Bulk specific gravity= 2.65; absorption capacity = 0.5%; dry-rodded unit weight = 1605 kg/m3, surface moisture = 1% • Fine Aggregate: Bulk specific gravity= 2.60; absorption capacity = 1.1%; fineness modulus = 2.70; surface moisture = 3%
For a design a concrete mix which is going to be used in Muğla the 28-day compressive strength of the concrete is required to be 30 MPa and slump of the fresh concrete is specified as 8-10 cm. Maximum size of the aggregate is 25 mm. Other necessary data are given as: Specific gravity of cement = 3.1 Bulk specific gravity of coarse aggregate = 2.68 Bulk specific gravity of fine aggregate = 2.64 Absorption capacity of both aggregates is 1.5% Fineness modulus of fine aggregate = 2.8 Dry rodded unit weight of the coarse aggregate = 1600 kg/m³ According to ACI 211 and based on absolute volumes: What should be the weight of SSD coarse aggregate in kg's? What should be the amount of mixing water in kg's? What should be the water to cement ratio? What should be the volume of dry rodded coarse aggregate per unit volume of concrete? What should be the air content in 96? What should be the SSD weight of fine aggregate in kg's? Seç Seç... Seç Seç... # Seç + Seç... # # + ÷
: Prepare mix design for given data • The 28-day compressive strength should be 5000 psi, The slump should 2 inch and the maximum aggregate size should not exceed one inch ( 3/4 inch). The properties of the materials are as follows: • Cement : Type I, specific gravity = 3.15 • Coarse Aggregate: Bulk specific gravity= 2.70; absorption capacity = 0.5%; dry-rodded unit weight = 1500 kg/m3, surface moisture = 1.2 % • Fine Aggregate: Bulk specific gravity= 2.80 ; absorption capacity = 1.1%; fineness modulus = 2.80; surface moisture = 3*C.No/90 %
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 gMass of oven dried aggregate: 5,216 gMass of aggregates submerged in water: 3,295 gMass of SSD (Saturated Surface Dry) Aggregate: 5,227 gFinda. The aggregate bulk dry specific gravityb. The aggregate apparent specific gravityc. The moisture content of stockpile aggregate (report as a percent)d. Absorption (report as percent)
Sample of coarse aggregate from a stockpile are brought to the laboratory for determination of specific gravities and absorption. The following masses were obtained.Mass of moist aggregate = 5,982 gramsMass of oven-dried aggregate = 5,892 gramsMass of aggregates submerged in water = 4,082 gramsMass of SSD aggregate = 5,897 gramsDetermine;a) apparent specific gravityb) bulk dry specific gravityc) bulk SSD specific gravityd) absorption, in percente) moisture content of stockpile aggregate, in percentf) free moisture
2.638, 2.514, 2.437 O 2.651, 2.472, 2.364
A civil engineer wants to design a concrete mix design with the following criteria: Design a concrete strength: 25 MPa with a slump of 90 mm. Ignore the need for exposure Select a non-air entrained concrete Fine aggregates properties: Fineness modulus 2.67; Bulk specific gravity 2.66 Coarse aggregates properties: Maximum size aggregate of 25 mm with the bulk specific gravity 2.55 and dry-rodded mass 2000 kg/m3. Based on the criteria above 2.1. Calculate the required strength. 2.2. Calculate the water cement ratio. 2.3. Calculate the mix proportions of all materials including cement, water, fine aggregates, coarse aggregates, and air content for 1 m3.