a. Design a concrete mix for construction of a water tank using ACI Committee 211.1-year 1991....

a. Design a concrete mix for construction of a water tank using ACI Committee 211.1-year 1991. The specified design strength of concrete is 30 MPa at 28 days. Standard deviation can be taken as 4 MPa. The specific gravity of fine aggregate and coarse aggregate are 2.65 and 2.7 respectively. The dry rodded bulk density of the coarse aggregate is 1600 kg/m3 and the fineness modulus of fine aggregate is 2.80. Ordinary Portland cement (Type I) will be used. A slump of
50 mm is necessary. Coarse aggregate is found to be absorptive to the extent of 1% and free surface moisture in the sand is found to be 2 percent. Assume any other essential data.
b. If slump value increase to 100 mm, design concrete mixing using the same data.
Compare and discuss the result.

Solutions

Expert Solution

now if the slump increse to 100 mm then the workabelity of the concrete will increse and the strenght of the concrete will decrease

Ally Wells answered 6 months ago

Next > < Previous

Related Solutions

Design a concrete mix by using ACI Method of Mix Design having 28-day characteristic mean strength...

Design a concrete mix by using ACI Method of Mix Design having 28-day characteristic mean strength of 28 MPa for a deck of a residential building at Nebraska. Dry weather and gradually warming temperatures may be expected throughout the working week. Fresh concrete composed of a slump of 90 mm and maximum aggregate size of 25 mm. Determine the amount of water reducing admixture to be used for 0.24 % and 0.35 %. Deck is a flat surface capable of...

Q1) Design a concrete mix by using ACI Method of Mix Design having 28-day characteristic mean...

Q1) Design a concrete mix by using ACI Method of Mix Design having 28-day characteristic mean strength of 27 MPa for a deck of a residential building at Nebraska. Dry weather and gradually warming temperatures may be expected throughout the working week. Fresh concrete composed of a slump of 90 mm and maximum aggregate size of 25 mm. Determine the amount of water reducing admixture to be used for 0.24 % and 0.65 %. Deck is a flat surface capable...

Design a concrete mix using ACI Method required for an exterior column to be located above...

Design a concrete mix using ACI Method required for an exterior column to be located above ground level in an area where it will be wet and subjected to substantial freezing and thawing. The concrete is required to have an average 28-day compressive strength of 30 MPa. For the conditions of placement, the slump should be between 25 and 100 mm. The column is 300 mm square with a minimum clear space for aggregate of 50 mm. The properties of...

Design a concrete mix for the superstructure of a building using DoE mix design method requiring...

Design a concrete mix for the superstructure of a building using DoE mix design method requiring a characteristic strength of 40MPa at 28days and a slump of 30-60mm. The materials available are ordinary Portland cement, and uncrushed fine and coarse aggregates of specific gravity of 2.65. The maximum nominal size of coarse aggregate is 10mm and fine aggregate confirms to the grading zone III. Neglect the effect of standard deviation and other factors.

Q5) Prepare a mix design (Use ACI Method of Mix Design) which will be used for...

Q5) Prepare a mix design (Use ACI Method of Mix Design) which will be used for a pier located at the South Carolina. South Carolina is hot and humid with daytime temperatures averaging between 30–34 °C in most of the state and overnight lows averaging 21–23 °C on the coast and from 19–23 °C inland. Winter temperatures are much less uniform in South Carolina. Coastal areas of the state have very mild winters with high temperatures approaching an average of...

Using ACI codes. Design a simply supported one-way reinforcement concrete floor slab with a dimension of...

Using ACI codes. Design a simply supported one-way reinforcement concrete floor slab with a dimension of 10 ft x10 ft. Dead load = 2620 lb Live load= 28000 lb Use f'c = 3000 psi and fy = 60,000 psi. Reinforcement is number 8. a) Design a one wat slab using ACI code with Reinforcement and the distance of steel bars from one another. b) Design a slab without reinforcement with minimum thickness. Compare the load, concrete slab and a reinforced...

Perform an ACI mix design using the following data (make assumptions as needed) The 28-day compressive...

Perform an ACI mix design using the following data (make assumptions as needed) The 28-day compressive strength should be 4,000 psi. The concrete is to be used under exterior condition subject to deicer. The slump should be between 3 and 4 in. and the maximum aggregate size should not exceed 1 in. The coarse and fine aggregates in the storage bins are wet. The properties of the materials are as follows: Cement- Type I, specific gravity = 3.15 Coarse Aggregate:...

concrete C25 mix design lab report

Design a concrete mix for reinforced concrete beams of a structure. The structure is located in...

Design a concrete mix for reinforced concrete beams of a structure. The structure is located in a locality wherein water has excess of chlorides in it. Required average compressive strength of concrete has been determined to be 4700 psi. Beams have cross-section of 9 in. x 21 in. reinforced with 4 # 6 bars. Reinforcement has a concrete cover of 1.25 in. and there is a clear space of 1.0 in. between form surface and steel bars. Fine aggregate has...

8) Design a concrete mix for the following conditions and constraints using the absolute volume method:...

8) Design a concrete mix for the following conditions and constraints using the absolute volume method: Design Environment : Non-air entrained concrete will be used to cast Concrete frame. Required design strength(5000 psi) Minimum dimension (10 in.) Minimum space between rebars (1.5 in.) Minimum cover over rebars (2.5 in.) Standard deviation of compressive strength (600 psi) , (25 samples) Available Materials Cement Type II , moderate exposure Coarse aggregate Nominal Maximum size 1 in. river gravel (round) Bulk oven dry...

Subjects