If a water reducer is added to the concrete mix without changing other ingredients, what will happen to the properties of the concrete? If the intention of adding the water reducer is to increase the compressive strength of hardened concrete, how can this be achieved?

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: 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: 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: If you knew that the cubic compressive strength of a certain type of concrete is 35 MPa, then…

A: Given:- compressive strength=35MPa=35N/mm2 To find:- Load

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

A: Effect of temperature on concrete mix:

Q: Why is it said that working with and around bone cement during mixing and application is a known…

A: Patients are at risk from bone cement, which is an acknowledged occupational hazard for those…

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: what are the effects of aggregates in the performance of concrete?

A: Aggregates: ‘Aggregate’ is a term used for any particulate material that may  includes gravel,…

Q: The name of the test used to measure the consistency and workability of fresh concrete is called the…

A: The name of the test used to measure the consistency and workability of fresh concrete is called the…

Q: Concrete will be poured in cold weather, and accordingly, write down the reasons why the cement…

A: Question being asked here is Concrete will be poured in cold weather, and accordingly, write down…

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: 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: Reflection on Green concrete technology

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

Q: Why is gypsum important in the performance of concrete? What is the importance of gypsum in…

A:

Q: what are the effects of metakaolin in the performance of concrete

A: given question is based on building material

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

A:

Q: 35. Which of the below is not a property of ferro cement?

A: Introduction- Ferrocement, also known as ferro-cement, is a building method that employs reinforced…

Q: Can a natural fiber become an additive in concrete to improve its performance? Why?

A: Yes, a natural fiber can be an additive in concrete to improve its performance why because Fibres…

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: 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: A project specifies a concrete strength of at least 20.7 MPa. Materials engineers will design the…

A: Given: Specified compressive strength of concrete, f'c= 20.7 MPa Standard deviation, s = 2.4 MPa.

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: 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: The increased surface area of manufactured aggregates (e.g. crushed stone) contributes to a more…

A: The above statement is FALSE

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: Two groups of concrete produced with exactly the same mixing properties are given in the Table…

A: Compressive strength of concrete-                    Usually, the compressive strength of concrete…

Q: Which one of the following types of concrete is most suitable in extreme cold climates? (a)…

A: Vacuum concrete is used for production in factory for precast unit . Air entrained concrete have air…

Q: The results of a laboratory experiment to evaluate the effects of a plasticizer are shown. a.…

A: Given data: Plasticizers are used for various purposes according to the requirement of…

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: 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: Discuss the rate of concrete drying shrinkage at different ages with diagram.

A: Brief concept- Drying Shrinkage- When the water content gets reduced, the change in the dimensions…

Q: What is the main reaction product of GGBS based geopolymer concrete and how the amount of this…

A: Since the GGBS is rich in calcium, the main reaction product of it is C-S-H gel, which may coexist…

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: A typical concrete mixture for sidewalks in Basra has a concrete compressive strength of 30 MPa. The…

A:

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

A: We know for best results the gradation should be well graded. For well-graded aggregates, the voids…

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: What are the four main chemical compounds in portland cement?

A: The main chemical compounds of Portland cement are as follows:

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: 15 The results of a laboratory experiment to evaluate the effects of a plasticizer are shown. a.…

A: a) The water content ratio: water/cement=water content/cement content The water cement ratio for the…

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: A project specifies a concrete strength of at least 3000 psi. Materials engineers will design the…

A: Given :-  Concrete strength = 3000 psi Standard deviation is s = 350 psi To determine :- The…

Q: What kind of admixtures are used to prepare a concrete mix of 80Mpa.

A:

Q: Four 150*300 cylindrical specimens were made from a concrete mix. Specimens were tested for 7 days…

A:

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: If a water reducer is added to the concrete mix without changing other ingre-dients, what will…

A: The water reducer in concrete increases the workability of concrete. The workability of concrete is…

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