How long can ready-mix concrete remain in the mixer and still be used?

Q: The quality control of concrete construction is an important part of concrete sub project.

A: CONCRETE  IS THE IMPORTANT THING IN CONSTRUCTION WORK.  CONCRETE IS PRODUCED IN BATCHES  AT SITE…

Q: What exactly is geopolymer concrete?

A: Concrete is a mixture of binding material like cement, lime with well graded coarse and fine…

Q: n the job, calculate the weight of cement, moist gravel, moist sand, and water that should be added…

A: Given:- water-cement ratio:- 2077 lb/yd³ of dry gravel, 244 lb/yd³ of water, and 4% air content.…

Q: What may happen if the temperature of a concrete mix exceeds 100°F (38°C)?

A: Effect of temperature on concrete mix:

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: 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: Develop some of the factors that affect concrete strength, when using machine at a construction…

A: In this question you are asked about the factors affecting on the concrete strength, when…

Q: Name and explain at least three different methods of curing.

A: Curing: curing is the process of applying external moisture to the newly laid concrete to reach its…

Q: normal-weight concrete has an average compressive strength of 4500 psi. What is the estimated…

A: Given-Normal weight concrete having compressive strength of 4500 psi. Required-To estimate the…

Q: A concrete masonry unit has actual gross dimensions of 7-5/8” * 7-5/8” * 7-5/8”. The unit is tested…

A: (a) It is required to determine whether the unit is hollow or solid: Gross volume (V)…

Q: What is lightweight concrete, and how does it work? What are the uses of lightweight concrete that…

A:

Q: What are the alternatives available to conventional concrete? Explain them in detail.

A: Concrete is most widely used material in world for construction purpose due to its properties.Due to…

Q: What is the source of fly ash? Why is fly ash sometimes added to concrete?What are the different…

A: The main source of Fly ash is coal as produced as a by-product from the coal industry. The burning…

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: What aggregates should be avoided when making concrete?

A: Aggregates: Aggregate is a term for any granular material which includes gravel, crushed stone,…

Q: Reflection on Green concrete technology

A: Green concrete technology What is Green Concrete Technology Green Concrete is a revolutionary topic…

Q: Concrete Technology/// Practicals.

A: Given: 2) Initial setting time.

Q: What are the different types of cement?

A: cement is an extremely fine material having adhesive and cohesive properties which provide a binding…

Q: How do the properties of aggregate affect the quality of the concrete mix?

A:

Q: How to transport concrete from  where it is mixed   to the area where they are to be used

A: Context: Transportation of concrete

Q: How do engineers mix concrete in a mixer?

A: Brief concept- Concrete- It is a mixture of fine aggregate, coarse aggregate, cement, and water.

Q: What are some of the factors that affect concrete strength, when using machine to mix at a…

A: Many factors influence concrete strength, including raw material quality, water/cement ratio,…

Q: Write four aggregate properties that affect the compressive strength of concrete. (3 P)

A: Four aggregate property that affect the compressive strength of concrete: 1. Size of the aggregate…

Q: Where does fly ash come from? What is the purpose of using fly ash in concrete? What are the many…

A: Fly ash is produced by plants which use coal for the generation of  steam and electricity. The coal…

Q: 4- List and explain methods of manufacturing of ready mixed concrete.

A: Here multiple questions are asked. As per guidelines, the first question has been answered. If you…

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

A: Following is required answer :

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: Explain the effects of chemical and pozzolanic admixture on the fresh and hardened properties of…

A: Solution: Producers use admixtures to reduce the cost of concrete construction to modify the cost…

Q: List rarely used concrete additives and give specific areas to be used. (Other than water reducers,…

A: Few rarely used chemical admixtures are listed below and usage is also given : 1) Air entraining…

Q: 1) Explain the step by step procedure of preparing the ready-mix concrete starting from collecting…

A: Ready-Mix Concrete is mortar that it was from a given designed design mix, is processed in a batch…

Q: A concrete mix includes the following ingredients per cubic meter: Cement%3D400 kg Water=184 kg No…

A:

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: explain how to avoid voids during concrete pouring

A: we have to asked how to avoid voids during concrete pouring

Q: Define what is geopolymer concrete?

A: Concrete: Concrete is a composite material composed of fine and coarse aggregate bonded together…

Q: What do we mean by curing concrete? What will happen if concrete is not cured?

A: Curing :               Curing is the gradual process of application of moisture content or water to…

Q: Why isn’t pozzolan used with Type III cement?

A: The type III cement is called high early strength cement, it is used for fast track construction…

Q: Subject concrete technology Q: a)What particular precautions would you take when concreting (i) In…

A: Thank you for the question . As per honour code we are allowed to answer the first question since…

Q: Explain what is pozzolanic material; write 5 benefits that can be achieved by using Pozzolana with…

A: Pozzolana cement is a combination of portland cement and pozzolanic material. This pozzolanic…

Q: Discuss the issue of waste water disposal in ready-mixed concrete companies. List three different…

A: Introduction: This question deals with  the issue of waste water disposal in ready-mixed concrete…

Q: MAKING AND CURING OF CONCRETE TEST SPECIMENS what is the volume of concrete?

A:

Q: 1. Explain why increasing the water content produces a weaker concrete. 2. What is heat of…

A:

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

A: concrete mix design - concrete mix design is define as the selection of ingredient in concrete…

Q: Why is it necessary to measure the air content of concrete at the job site rather than at the batch…

A: It is necessary to measure the air content of concrete at the job site rather than at the batch…

Q: What's the importance of determining the soundness of cement to civil/structural engineers in the…

A: Soundness test is performed to determine the volumetric expansion of cement paste. It is determined…

Q: Why is it necessary to measure the air content of concrete at the job site rather than at the batch…

A: The air content of concrete is measured in job site rather than batch plant because there will be…

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.