Why is extra water harmful to fresh concrete, but good for concrete after itreaches its final set?

Q: Understand the many types of concrete admixtures and how they affect the concrete.

A: Introduction: Producers firstly use admixtures to lower the cost of concrete construction, adjust…

Q: How can fine pozzolans reduce bleeding of fresh concrete?

A: Bleeding: A phenomena in concrete in which the free water available in the mix rises to the top 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: What may happen if the temperature of a concrete mix exceeds 100°F (38°C)?

A: Effect of temperature on concrete mix:

Q: a) What may happen to the concrete if you chose to sprinkle some water on it before it has had a…

A: Curing of concrete  has to be done after 24hr of  placing of concrete in its final position.…

Q: Define the process of modeling reinforced concrete with abaqus?

A: Answer:- Abacus modeling:- On the basis of the central objectives three dimensional Finite Element…

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: The poisons ratio of concrete is between ____ to 0.21. a) 0.08 b) 0.11 c) 0.12 d) 0.15 2. Grade…

A: Poisson's ratio is the ratio of lateral strain to longitudinal strain. The range of poisson's ratio…

Q: Is it possible to mix concrete using fine aggregates?

A: The given Question is, whether it is possible to mix the concrete using fine aggregates....  Well,…

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: Why the aggregate used in concrete work be saturated dry surface (S.S.D) condition? Discussed

A: Saturated Dry Surface (SSD) is a condition where the surface of the aggregate is dry and the…

Q: how many curing days required for 28-day concrete strength?

A: When coarse, fine aggregate, cement and water are mixed in a proportion corresponding to the…

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

A: Time to be used of Ready Mixed Concrete (RMC) after mixing 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: What problems are likely to occur if concrete has too low a slump? Too high a slump? How can the…

A: What problems are likely to occur if concrete has too low a slump?   Concrete with a low slump has a…

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: Define the Water-Cement Ratio and How it is related to the strength of concrete?

A: Water-cement ratio:  Water content in the given volume of the concrete will have significant…

Q: What variables contribute to concrete shrinkage?

A: Concrete has shrinkage property due to presence of cement. Due to loss of moisture from concrete by…

Q: What is self-consolidating concrete? How are its properties achieved? Howare these properties…

A: Self-consolidating concrete or self-compacting concrete (SCC) is a concrete mix which has a low…

Q: 1.What is InsulatingConcrete Form (ICF), Expalin briefly? 2.Name 3 unit systems of…

A: Insulating concrete form is an arrangement of formwork for supported concrete generally made with an…

Q: Understand the purposes of various concrete admixtures and their effect on concrete.

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

Q: Proposed Methodology for Green concrete ?

A: Answer:- Green concrete:- A concrete which uses waste matter at least one its component, or its…

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: Is it suitable to use the partial replacement of cement with Calcium bentonite in concrete to…

A: Bentonite is a clay mineral, it is a kind of natural pozzolanic material that improves the…

Q: How limestone or calcite affects the perfomance of concrete?

A: The use of limestone in the construction industry has been increasing due to various benefits as…

Q: 6% (Q.5) Discuss the influence of plastic shrinkage of concrete? How can control of plastic…

A:

Q: When is the Concrete susceptible to cracking?

A: Concept: Complete/incomplete separation of concrete into two or more parts as a result of fracturing…

Q: 1. What are the main reasons of concrete segregation? 2. What are the main causes of plastic…

A: Answer NOTE- According to Bartleby guidelines only give the answer of the first question. If you…

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: Controlling excessive temperature gradients in large concrete masses is very crucial. Explain in…

A: After the placement of the concrete, monitoring the temperature of concrete is one of the most…

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

A: The soundness of Cement : 1. The soundness of cement can be defined as its ability to retain its…

Q: what are the effects of alkaline solution on the performance of geopolymer concrete?

A: The geopolymer concrete is the mixture of course aggregate, sand, fly ash and alkaline solution of…

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: 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: What is concrete creeps, what factors influence it?

A: To explain the concrete creeps and factors which influence the concrete creeps.

Q: (a) Describe three (3) pozzolanic materials that are being used increasingly by the construction…

A: Pozzolonic material is essentially solicitous or aluminium compound which in itself do not possess…

Q: Why is strength the property most valued in concrete by designers and quality control engineers?

A: Among the properties of any materials which govern their feasibility to be used in intended place or…

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

A:

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’s the process of concrete compression failure?

A: Compression Failure of Concrete. Failure of the concrete mass is witnessed when the load acting on…

Q: WHY IS THE WATER-CEMENT RATIO NECESSARY IN A CONCRETE MIX DESIGN?

A: The water-cement ratio determines the strength and durability of the concrete material when it was…

Q: If the overall temperature of the concrete exceeds the concrete may flash set. O 120F O 100F O 110F…

A: Ans - 100 F at 100 F setting time is 1-2/3 hours. The setting time of concrete decreases with a rise…