MAKING AND CURING OF CONCRETE TEST SPECIMENS what is the volume of concrete?
Q: What do you mean by concrete's workability, why do we need it, and how do different aggregate…
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Q: b-What is the range value of compressive strength for normal concrete 7 days and 28 days? 7-What is…
A: Note:- As there are 5 questions asked but as per guidelines we are allowed to answer only one…
Q: Discuss the role of water in concrete and its desired properties.
A: The role of water in the concrete is as follows. For curing For mixing concrete For proper heat of…
Q: How is unit weight of concrete affected by its aggregates
A: To analyze the effect of aggregate on the unit weight of concrete.
Q: Discuss five different desirable characteristics of aggregate used in portland cement concrete.
A: The five different desirable characteristics of aggregate used in portland cement concrete are as…
Q: The strength of a fully matured concrete sample is 500 kg/cm2. When cured at an average temperature…
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Q: If a water reducer is added to the concrete mix without changing other ingredients, what will happen…
A: The water reducer, we can also say it as superplasticizer, by adding this of correct proportion we…
Q: Why is it important to know the specific gravity of cement
A: Specific gravity is the ratio of weight of material and water having equal volumes.
Q: Discuss the concept of high-performance concrete. Discuss some of its properties that make it…
A: - High performance concrete (HPC) is a type of concrete engineered to be stronger and more robust…
Q: Describe the difficulty of designing a concrete mixture and the necessity of compressive strength.
A: The concrete mix design is important for any concrete structure. Various factors are involved in…
Q: Two groups of concrete produced with exactly the same mixing properties are given in the Table…
A: Solution: Explanation of part A: Given: Ratio of Water/Cement of first concrete=0.45 Ratio of…
Q: Discuss the significance of the compressive strength test on concrete. Whatis the typical range of…
A: Significance of the compressive strength test on concrete: The compressive strength of concrete is…
Q: Q4: A: What is self-consolidating concrete? How are its properties achieved? How are these…
A: (A) Self consolidating concrete (SCC), additionally referred to as self compacting concrete, may be…
Q: Kindly answer both a and b Other wise leave it... Give me both answer I don't want single answer..…
A: a.The effect of water content on flow ability, segregation and strength of concrete: The water…
Q: Estimate the quantity of (cement, fine aggregate, coarse
A: Solution: Choice of slump = 70 mm Choice of maximum size of aggregate = 32 mm Estimate of water…
Q: What does the Specific Gravity of Fine Aggregate, Absorption of Fine Aggregate, and Surface Moisture…
A: Specific Gravity of Fine aggregate: It is the ratio of the weight of unit volume of Fine aggregate…
Q: Does fine aggregates suits concrete mixing
A: The goal of good concrete mix design is to blend aggregates to minimise the space between…
Q: write small introduction about (cement, fine aggregate, coarse aggregate ) also about superplstizer…
A: Cement is a binding substance used for building, and civil engineering construction works. Cement is…
Q: A. What are the primary and secondary parameters upon which durability of concrete depends on?…
A: Durability of concrete: It is defined as the ability of concrete to resist the actions of external…
Q: Explain the importance of aggregates in concrete construction
A: Concrete is formed by adding water to the mixture of cement, fine aggregates and coarse aggregates.…
Q: 1. Aggregate occupies what percentage by mass of normal concrete? 2. Natural aggregate deposits are…
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Q: Approximately 70% of concrete is made up from aggregates. Some stated that aggregates are only an…
A: b) Even in ideal conditions, the phrase inert indicates not reacting to anything else. As a result,…
Q: According to ASTM C33 Standard Specification for concrete Aggregates, what is the maximum size…
A: According to ASTM C33 : The maximum size is defined as , in sieve analysis , for which the 100% pass…
Q: what conclusion we can make regarding the strength of the concrete.
A: in this question conclusion is being asked regarding strength of concrete
Q: What limits you to use both types of concretes? (Performance and any relevant aspects - Not…
A: Answer Introduction Ready-mix concrete is very old technology. the ready mix concrete is the first…
Q: 2. (a) What is the distinction between cement and concrete? (b) Cite three important limitations…
A: Cement : Cement, in a broad sense, refers to all sticky compounds, but in a more specific meaning,…
Q: In the context of concrete structures, what is shrinkage? How does it occur? Discuss the factors…
A: Shrinkage:- The decrease in either length or volume of material results from changes in moisture…
Q: 6-What is the range value of compressive strength for normal concrete 7 days and 28 days? 7-What is…
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Q: It is important for the engineer to understand the basic properties of hardened portland cement…
A: The properties of hardened concrete are; Durability. Mechanical strength Fire resistance. Impact…
Q: (c) What is the requirement of workability in concrete mix? How consistency is different from…
A: The property of fresh concrete to meet the wide requirement like mixability, stability,…
Q: .1 What is reinforced concrete? Explain. - What is meant by the modular ratio in concrete?
A: As per our guidelines we are supposed to answer only first question. Kindly repost other questions…
Q: What is pozzolanic material; what benefits can be achieved by using Pozzolana with cement in…
A: Pozzolanic material - Pozzolanic materials are a broad class of…
Q: Why we need to know the Properties of Fine Aggregate and how it is important for concrete
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Q: Discuss the concept of concrete maturity meters.
A: The concept of concrete maturity meters are explained as below,
Q: What are the functions of aggregate used in portland cement concrete?
A: Aggregate can be defined as it is a gathering of non-metallic minerals, which are collected in…
Q: What is the purpose of concrete cube test
A: Concrete cube test. The test involves the cube specimen of concrete which are required to find…
Q: What is the maximum aggregate size that can be used in concrete for the following conditions:
A: maximum size of aggregate in non-reinforced walls= 40 to 75 mm (1.5 to 3 inch) For R.C. Foundation…
Q: List 5 advantages and disadvantages of concrete as a construction material.
A: Concrete is mixture of cement,sand and aggregate5 advantage of concrete in construction…
Q: Briefly note the distinction between cement and concrete.
A: Cement is a homogeneous material composed of well grinded calcareous(calcium containing) and…
Q: Question 1 (1 point) Saved The minimum concrete strength for a side curb on the street in Hamilton,…
A: Solution: Note: As per Bartleby Q/A rules, I can answer 3 MCQs, Please post the rest again. I'll be…
Q: How will the results of testing aggregates be useful in making concrete?
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Q: What sieve size is the dividing line between fine aggregates (sand) and coarse aggregates (gravel)…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 1. Explain why increasing the water content produces a weaker concrete. 2. What is heat of…
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Q: According to ASTM C33 Standard Specification for concrete Aggregates, what is the nominal maximum…
A: Nominal maximum size: The minimum size through which the entire aggregate passes
Q: Four 150*300 cylindrical specimens were made from a concrete mix. Specimens were tested for 7 days…
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Q: What are the typical deleterious substances in aggregates that affect portlandcement concrete?…
A: The typical deleterious substances in aggregates that affect portland cement concrete are: Organic…
Q: What are the common minerals found in various kinds of aggregates used in concrete?
A: Finding out common minerals found in various kinds of aggregates used in concrete.
Q: 1-What is the bond strength between steel and concrete and how it can be calculated? 2-What is the…
A: 1.Bond Strength:- Bond Strength is defined as the force which resist the separation of two…
MAKING AND CURING OF CONCRETE TEST SPECIMENS
what is the volume of concrete?
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- Q3: Discuss importance of sieve analysis test conducted on both fine and coarse aggregateQ4: Concrete cylinder placed in universal testing is subject to axial compressive load. Concretecylinder crushed at a load of 85 kilo pounds, calculate compressive strength of concrete. (Concretecylinder has 6 inches diameter and 12 inches height)a) Calculate the temperature of aggregates to produce fresh concrete having the sametemperature with the ambient temperature. Following data in Table 1 could be used:Compressive Strength is conducted for each aggregate with 3 specimens for each no. of days of curing. The recorded maximum load when the specimen breaks are as follows 7 Days (kN) 14 Days (kN) 28 Days (kN) 746.3 754.7 486,73 678.8 3/8" Sample 513.14 694.2 360.71 679.8 759.8 7 Days (kN) 14 Days (kN) 28 Days (kN) 231.86 339.8 377.7 3/4" Sample 252.04 206.69 339.6 381.1 343.3 379.9 Compute the compressive strength, in psi, for each size of aggregate on each no. of days of curing. Please indicate if the sample passed the required strength for each no.of days of curing. Conversion: 1lb-f = 4.488 N Attach your solution on the box below, image type. Use the editor to format your answer
- What is your recommendation for the maximum size of coarse aggregate for a column 500X500 mm if the minimum clear distance between reinforcement bars is 50 mm and the minimum cover is 40 mm. Select one: A. 12.5 mm B. 25 mm C. 37.5 mm D. 19 mmTesting Procedure for Unit Weight of Aggregate.. is the grade size used to identified the practical grading of the aggregate O 4.75 mm O 600 micron O 1.18 mm O 75 micron O Other:
- For the dry rodded bulk density test of coarse aggregate as performed in lab 4, angular aggregates have more void space than rounded aggregates. OAI True O B) False What are the steps of placing fresh concrete? OA Float, Screed, Consolidate O B) Screed, Consolidate, Float OC) Consolidate, Float, Screed O D) Consolidate, Screed, Float When working with concrete in hot weather, what is an acceptable measure to help in the batching and placing of concrete? O A) Spray concrete forms O B) All of the above O) Spray the aggregates O D) Add ice at the batch plant The highest concrete strength is obtained when there is a: OA Low w/c and concrete is moist cured for as long as possible B) High w/c and concrete is moist cured for as long as possible C) Low w/c and concrete is moist cured for 24 hours and then dried D) High w/c and concrete is air cured for as long as possible < o OAnalysis of Fine AggregatesFill in the table:! Three 150 mm x 300 mm concrete cylinders with randomly oriented steel fiber contents of 0, 2, and 3% by weight, respectively. After curing for 28 days, the specimens were subjected to increments of compressive loads until fail- ure. The load versus deformation results were as shown in Table P11.14. TABLE P11.14 Specimen No. Fiber Content (%) 1 2 3 2 Deformation (mm) Load (kN) 0.31 565 565 565 0.61 716 (failure) 756 792 0.91 641 756 1.22 440 690 1.52 378 641 1.83 351 (failure) 605 (failure) Assuming that the gauge length is the whole specimen height, determine the following: a. The compressive stresses and strains for each specimen at each load increment. b. Plot stresses versus strains for all specimens on one graph. c. The modulus of elasticity for each specimen. d. The ultimate strength for each specimen. e. The strain at failure for each specimen. f. Toughness. Curves may be approximated with a series of straight lines. g. Comment on the effects of increasing the fiber content on…
- Question 31 According to ASTM C33 Standard Specification for concrete Aggregates, what is the nominal maximum size aggregate? % Retained by Sieve Size mass # 4 95-100 # 3/8 70-90 # 3/4 30-65 1.5" 0-5 2" O Sieve 1.5" O Sieve 3/8" Sieve 2" O Sieve #4A concrete mix includes the following ingredients per cubic meter: a. Cement = 400 kg b. Water = 176 kg c. No admixture Table P6.30 shows possible changes that can be made to the mix ingredi- ents. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease, or approximately the same.Q. Using the British methods, design a concrete mix to bear an average compressive strength of 35 MPa at 28 days, to cast a room slab with the following dimensions (5 width x 4 length x 0.2 depth m) and 200 mm space distance of reinforcement. Consider the following properties: o Cement used is type I Portland cement ® Required slump = 30 — 60 mm o Coarse aggregate: ® Crushed rocks * Maximum size of 40 mm, e The fine aggregate: * Crushed rocks = Falls in zone 3 o Assume zone A for figure 1 o AssumeK = 1.64