a) What are the broad types of admixtures? b) What do you mean by concrete mix design; what are the major factors that must be considered while designing concrete mixes? c) Name various methods used for concrete mix design worldwide? Which method is commonly used Pakistan?

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: B F RK C E G F1 F2 AC, CE, EG, GI, IK, BD, DF, FH, HJ = 9.5 m, AZ=11.5 m, ZB=5 mF_1 = 65 kN, F_2 =…

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Q: Plz, write a detail notes and where they are used of the following materials in the concrete.…

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Q: *If the required weight of coarse aggregate for mix design is 2000 lbs per cubic yard of PCC,…

A: Reference : ACI 318 mix design code Given : Weight of coarse aggregate Specific gravity To determine…

Q: The strength of concrete prepared, cured & tested under specified conditions at a given age is…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: 4. SOLVE FOR THE AXIAL STRESSES OF MEMBERS BD, DE & FG OF THE TRUSS SHOWN ABOVE. INDICATE WHETHER IT…

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Q: B: Design a concrete mix to be used in a concrete substructure that subject to a moderate sulfate…

A: first calculate the mean target strength fmean=fck+1.65σ=30+1,65×50=38.25n/mm2 now assume water…

Q: discuss four criteria in the mix design that support sustainable construction

A: Mix Design: Concrete mix design refers to designing the proportions of the various ingredients which…

Q: Question 1 Which material is mold-resistant? Cork Bamboo Mycelium Cob Question 2 What was the main…

A: Construction materials are things that are utilized in buildings. Buildings have been made using a…

Q: List the steps involved in proportioning of concrete (i.e. mix design) if the required concrete…

A: Moisture content MC : The aggregates contain some amount of water already. Such water is called as…

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: Situation 1: 6. 7. 8. a. b. It is required to produce 20 m³ of concrete using 1:2.50:5 design mix.…

A: Volume of concrete = 20 m3Design mix = 1 : 2.5 : 5Properties of materials,It is asked to determine…

Q: Vhich admixture would you use in each case during mixing or at the job site? a. More time is…

A: The various admixtures required for given conditions are mentioned in the following step.

Q: Given the % Cum Pass made on a fine aggregates: Sieve size mm 9.5 4.75 2.36 1.18 0.6 0.3 0.15 %…

A: It is required to determine the % cumulative retained. % Cumulative retained=100-% cumulative…

Q: a) Why and how rebound hammer is used for concrete? b) State the proper procedure for filling the…

A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…

Q: please answer all questions ,thanks ! (a)What has cross-sectional shapes?  (b)What commonly used…

A: (a)What has cross-sectional shapes? (b)What commonly used type of cross-sectional study? (c)Why is…

Q: what is the aci design mix or proportioning of standard compressive ddesign strength values (without…

A: The American Concrete Institute (ACI) mix design method is but one of many basic concrete mix design…

Q: Table 1 shows the various quantities of materials needed for several different concrete mixes. Mix…

A: Given, Mix design data

Q: The following data are obtained from a liquid limit test. Draw the flow curve and determine LL value…

A: Draw the Flow curve and Liquid Limit value of the soil ?

Q: a- What do you mean by concrete mix design; what are the major factors that must be considered while…

A: It'll be worthwhile to recall the connections between total and paste, the two essential…

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: The following table are data of mixtures from different suppliers. The structural engineer requires…

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Q: Fly ash, which is among the mineral additives and used as a concrete additive; • Its use in dam…

A: The flow of fluid includes movement of an unbalanced fluid. As long as unequalled forces are in…

Q: Why is super plasticizer added to concrete? 1. To reduce the quantity of mixing water. 2. To…

A: Superplasticizer added to concrete because : Reduce water cement ratio Reduce quantity of cement…

Q: A concrete aggregate mix must contain at least 28% sand by volume (m*) for an adequate measurement.…

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Q: npose phy ement and

A: Given:- BNBC 2020 To find:- physical and technical specification for:- a) cement b) MSRod

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: calculate the volume of products hydration for 100g cement and 30 ml of water cured in a sealed test…

A: Taking Specific gravity (S.G) of dry cement = 3.15 Absolute volume of total dry cement added,…

Q: Calculate the weight of cement, fine aggregate (sand), coarse aggregate (rock) and gallons of water…

A: Given Data: pad dimensions=5ft×5ft×5inmix=1:2:4w/c=0.50 The maximum coarse aggregate size as per…

Q: What is a Test Sieve? What is a Test Sieve used for? What are the types of Test Sieves? What are the…

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Q: the compressive strength is 30.68 MPa, water - cement ratio is 0.45, and coarse aggregate is 992…

A: If the compressive strength is 30.68 MPa, water - cement ratio is 0.45, and coarse aggregate is 992…

Q: (c) An engineer has ordered concrete grade 50 from a batching plant. However, the cube compressive…

A: Following is required answer :

Q: 3) For the beams and columns of a structure the followings are specified or determined. Design an…

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Q: 2) What is the characteristic of concrete in the stress-strain curve of concrete? What is the…

A: The characteristic property of concrete obtained from the stress-strain curve is the Modulus of…

Q: a) Name and sketch diagrams of four (4) various moisture content of aggregate. Which is the most…

A: Solution: a.   The four various moisture content of aggregate are: 1. Oven Dry : In this the whole…

Q: The correct mix for a batch of concrete is 5:4:2 in terms of sand, gravel, and cement. The batch…

A: Objective: To determine the quantity of sand, gravel and cement for given concrete mix.   Given:…

Q: Solve for the number of bags, volume of sand, gravel and water for a 35m3 of concrete. Cement having…

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Q: The following table represents a concrete mixture that has not been completely proportioned. The…

A: The water to cement ratio compares how much water versus cement is used in a concrete mix. A low…

Q: You are an engineer in charge of mixing concrete in an undeveloped area where no potable water is…

A: We need to determine the tests required to be done to check suitability of water source for concrete…

Q: Discussion on the experience of fineness of cement in civil engineering with the solution

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Q: How does the increase of maximum aggregate size used in the concrete mix design affect the…

A: Increase of maximum aggregate size used in the concrete mix design affect the percentage of fine…

Q: a) What do you mean by concrete mix design; what are the major factors that must be considered while…

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Q: Problem#8: Calculate the quantities of cement, sand and aggregate when the mix proportion is 1:1:3…

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Q: Give 2 main factors that affect the strength of a Portland Cement Concrete and write a brief…

A: A good design of concrete joints creates the basis for sound infrastructure. Ingredients to be…

Q: For the following concrete mix design 1:0.51:1.29:3.6 (P:W:S:G), how much of each individual…

A: Volume of the slab = 5*4*0.2= 4 m3 With extra 5%= 4.2 m3 Total Weight of Materials Used= 4.2*2420=…

Types of Concrete

Concrete is the fundamental material used in civil engineering such as building materials for building structures. Concrete is an aggregate mixture of cement, sand, and fine and coarse rock pieces. The cement acts as a binding material that holds the compositions together, sets, and hardens with time. Apart from cement, there are other different types of binding materials used, such as lime concrete, bitumen, asphalt, and so on.