If concrete has a compressive strength of 3200 psi at ambient temperature, what would be the compressive strength if heated to 700°C?
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: How is unit weight of concrete affected by its aggregates
A: To analyze the effect of aggregate on the unit weight of concrete.
Q: 3- Explain various factors affecting workability of concrete. 4- Explain the factors which effect on…
A: 3. Factors affecting workability of concrete water content : increase in cement content of concrete…
Q: 1. What are the most common applications for structural steel? 2. What is the purpose of reinforcing…
A: Structural steel plate is a flexible construction material that gives manufacturing versatility and…
Q: What is the minimum strength that concrete must reach prior to freezing so that the overall strength…
A: The minimum strength that concrete mus overall strength gain is not affected:
Q: How does curing over time affect the splitting tensile strength of concrete?
A: Right after the water is added to the mix, Hydration starts taking place and it requires much…
Q: Please answer the ff. problem 1. What are the typical uses of structural steel? 2. Why is…
A: Brief concept- Structural steel is a special type of steel and it is widely used in construction all…
Q: The strength of a fully matured concrete sample is 500 kg/cm2. When cured at an average temperature…
A:
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: Define the Percentage of Kevlar (K49) to be used in Concrete ?
A: The fibers tested during this study are commercially available: Kevlar 119, 29, 129, forty nine and…
Q: (a) One of the advantages of concrete is its high strength to weight ratio compared to other…
A: Note: Hi! Thank you for the question, As per the honour code, we are allowed to answer three…
Q: Can a natural fiber become an additive in concrete to improve its performance?
A: Brief concept introduction- Natural Fiber- Natural fibers are derived from natural sources such as…
Q: o Why the tensilę strengths of concrete are of the order of 10 and 15%of the compressive'strength.
A:
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: 6) What are the three methods for measurement of tensile strength of concrete? Indicate which…
A: Since, the question to be solved is not specified, the solution for question 6 is as follows: The…
Q: Which one of the following sentences is not correct? a. For many years, tensile strength has been…
A:
Q: Give the relationship between the compressive, tensile and flexural stress of concrete in terms of…
A: The listed are the relationship between their strength
Q: What is the permissible tensile strength of concrete , M150 ?
A: Given data: Grade of concrete = M150 To find- The permissible tensile strength of concrete.
Q: What happens if any concrete cube fails in 28 days compressive strength test?
A: concrete compressive strength is the material ability to sustain load without showing deflection and…
Q: The modulus of elasticity of M25 concrete as per the formula in IS 456 : 2000 is:
A: The given data is: Grade of concrete, fck=25
Q: What is the importance of flexural strength in concrete?
A: Flexural strength is defined as the measure of the tensile strength of the concrete. Actually it is…
Q: Question 5 v Saved What is the minimum acceptable compressive strength o GDOT class "AA" concrete?…
A: Since the question number to be solved is not specified, the solution of Question 5 is as follows:…
Q: Q.1 Two groups of concrete produced with exactly the same mixing properties are given in the Table…
A: As per the guidelines we are supposed to solve only three sub-parts.
Q: A normal-weight concrete has an average compressive strength of 4500 psi. What is the estimated…
A: compressive strength of concrete = 4500psi (1)Modulus of elasticity of concrete:-
Q: What are the properties of Self-Consolidating Concrete?
A: Solution: Self compacting concrete is that concrete that flows under its own weight that do not…
Q: A normal-weight concrete has an average compressive strength of 20 MPa.What is the estimated flexure…
A: Given:- average compressive strength =20MPa To find:- estimated flexure strength
Q: What is the range of fineness of cement according to ASTM standard
A: Fineness of cement indicate the particle size of cement. fineness of cement affect the hydration…
Q: Discuss the different types of volume change in concrete at early and long-term ages.
A: Answer:- Volume change of concrete: Concrete changes somewhat in volume for several reasons, and…
Q: Explain why shape, surface texture, and gradation are more important for aggregate use in normal…
A: Aggregates is useful in construction as a major material for the proper mix of concrete and strength…
Q: Is there any significants importances to the ratio of tensile strength to compressive strength of…
A: Yes ratio of tensile strength to compressive strength of concrete Importance in strength of…
Q: Discuss the rate of concrete drying shrinkage at different ages with diagram.
A: The phenomenon that occurs due to the loss of moisture present in pores of the hardened paste of…
Q: Steel modulus of elactisity is 29x10^6 psi what is concrete modulus of Elasticity in psi ?
A: Modulus of elasticity of the steel = 29 x 106 psi. Note: The modulus of elasticity of the steel is…
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: A hollow concrete masonry unit has an actual gross dimension of 150mm x 200mm x 400mm (width x…
A:
Q: calculate the flexural strength of concrete?.
A: Flexural strength could be a measure of the strength of concrete beams or slabs. Flexural strength…
Q: MAKING AND CURING OF CONCRETE TEST SPECIMENS what is the volume of concrete?
A:
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: Correctly define which of the stress versus strain graphs represent the comparison of 8 ksi and 4…
A: Stress- Strain curve of any material shows the material deformation caused due to applied load.…
Q: A normal-weight concrete has an average compressive strength of 20 MPa. What is the estimated…
A: "As per our guidelines we are supposed to solve the first question, kindly post the other question…
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: what is the value of gel porosity in concrete ?
A: Brief Concept Introduction: Concrete: It is the mixture of cement (binding material), aggregates,…
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- Chapter 13 Question: What is the elasticity of concrete for a normal weight mix (unit weight equal to 150 pcf) with a compressive strength of 5,000 psi? O 3.644 ksi O 4.074 ksi 4,287 ksi O 3.976 ksi O 3,834 ksi2. According to Section 10.2.3 of AC, the maximum usable strain at extreme concrete compression fiber shall be assumed equal to a. 0.004 b. 0.005 c. 0.003 d. 0.002 e. 0.001 f. 0.008Estimate the modulus of elasticity for concrete with a density of 120 lb/ft3 and a 28-day maximum compressive strength of 3500 psi.
- 42. Permissible tensile strength of concrete, M150 is: A) 150kg/cm² C) 150N/mm² B) 15kg/cm D) 15N/mm224 Calculate the tensile steel stress of 5-16-mm-dia rebars in a concrete beam 290 mm by 470 mm at ultimate stage if f'c = 27 MPa and fy = 420 MPa. Express your answer in whole number.Given grade 60 steel rebar and 4000 psi normal-weight concrete, (a) What is the yield strength of steel? (b) What is the modules of elasticity of the steel? (c) What is the steel strain at the yield point? (d) What is the concrete compressive strength? (e) What is the concrete's modulus of rupture per ACI318-19? (f) What is the concrete' ultimate compressive strain?
- The flexural tensile strength of M25 grade of concrete, in N/mm², as per IS:456-2000 is A 0.5 B 5 C 2.25 D 3.57.8 Design the concrete mix according to the following conditions: Design Environment Building frame Required design strength Minimum dimension 27.6 MPa || 150 mm Minimum space between rebar Minimum cover over rebar Statistical data indicate a standard deviation of compressive strength of 2.1 MPa is expected (more than 30 samples). Only air entrainer is allowed. 40 mm = 40 mm Available Materials Air entrainer: Manufacture specification 6.3 ml/1% air/100 kg cement. Coarse aggregate: 19 mm nominal maximum size, river gravel (rounded) Bulk oven-dry specific gravity Oven-dry rodded density Moisture content = 2.5% 2.55, Absorption = 0.3% = 1761 kg/m³ Fine aggregate: Natural sand Bulk oven-dry specific gravity 2.659, Absorption 0.5% Moisture content = 2% Fineness modulus 2.47 %3Dwhy members have residual creep strain, even after creep load is removed? Calculate the coefficient of creep for normal strength concrete at 2 years. Assume the loading age to be 3 days.
- o Why the, tensile strengths of concrete are of the order of 10 and 15%of the compressive' strength.Contraction joints: O A All of the above O B) Allow the concrete to move both horizontally and vertically OC) Minimize random cracks O D) Should be cut to a depth of one-half the slab thickness The most common method for placing concrete for sidewalks is O A) Buckets and Cranes O B) Chutes OC) Conveyors O D) Pumping What is the effect on the properties of hardened concrete if plastic concrete freezes for an extended period after placing? OA) All properties will be enhanced in quality O B) No effect on concrete properties OC) All properties will be reduced in quality O D) Concrete strength decreases but freeze/thaw resistance increases Bull floating is done: OA Immediately after hand floating O B) Immediately after bleed water has evaporated OC Before screeding O D) Immediately after screedingchoose the correct option pleaseSilica fume admixture increase concrete strength up to 60 MPa 120 MPa150 MPa200 MPa