You have inherited the formwork from another project and it can handle 900 psf of pressure. You are in a location where it will often be 45°F during concrete placement. You need to use the formwork to put up 9-foot-high walls. Standard concrete will be used. What maximum placement rate R can be used so that the formwork can be reused?

Q: What effect does the kind of cement have on the strength of concrete? Prepare your justifications by…

A: Introduction: Cement is a binding agent used with aggregates and other ingredients to produce…

Q: Self-healing concrete.  Explain why that strategy and how it can help in the product development…

A: Strategy behind self healing concrete,

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: Comment and write what needs to be done to increase workability in fresh concrete.

A: Workability is the ease with which concrete can be mix , transported , placed , compacted and…

Q: The design engineer specifies a concrete strength of 5575 psi. Determine the required average…

A: Given, Specifies  concrete strength = f'c=5575 psi

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 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: Q a) What particular precautions would you take when concreting (i) In winter, and (ii) in hot…

A: Brief concept- Concreting- It is the process of putting the concrete in the work location and…

Q: Does fine aggregates suits concrete mixing

A: The goal of good concrete mix design is to blend aggregates to minimise the space between…

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: Can grout replace concrete in normal structure?

A: The grout is the mixture of cement, water and sand. The main purposes of grouting are pasting tiles,…

Q: where do Lightweight Concrete use ?

A: Lightweight concrete:-   Shale, clay, or slate, which give it its distinctively low density, are…

Q: How could you say precast concrete is considered as energy efficient?

A: Precast concrete -  Precast concrete are the construction product that are designed in the specific…

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: a) Explain the difference between workability and consistency. (Giving the definitions is not…

A: As per our guidelines we are supposed to answer first question only so please repost other as…

Q: (a)What are the broad types of admixtures? (b)How would you improve the bond of fresh concrete to…

A: Introduction: Admixtures are materials other than water used in the concrete mix to enhance its…

Q: What is the difference between cement and concrete?

A: Cement: A cement is a binder, a substance used for construction that sets, hardens, and adheres to…

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: Why is it that more water is bad for new concrete but excellent for concrete that has reached its…

A: Add water to the cement. When determining the concrete's strength, the ratio is critical.

Q: Explain the differences between pre-stressed and nonpre-stressed pre-cast concrete units?

A: Prestressed concrete units are done by casting concrete in pre-assemble forms along with rebars and…

Q: Proposed Methodology for Green concrete ?

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

Q: What is compressive strength of m30 concrete mix??

A: Compressive strength of concrete is determined by the cracterstics strength after 28 days.

Q: Why do we need lean concrete

A: Lean concrete is a mix where the amount of cement is lower than the amount of liquid present in the…

Q: What cost advantages may be obtained from the use of fiberreinforced concrete?

A: Fiber reinforced concrete is a conctete containing  fibrous material . Their are different type of…

Q: why we use Lightweight Concrete ?

A: Light weight concrete are those concrete whose density is less than 1920kg/m3

Q: What aggregates should be avoided when making concrete and cement and why? Give Details.

A: This question is from concrete technology

Q: Why is it that more water is bad for new concrete but excellent for concrete that has reached its…

A: Water is a huge component of concrete as it viably participates in the compound reaction with…

Q: Although we design for flexure separately from shear, both flexure and axial force can have an…

A: Brief concept- There are three types of sections that are generally designed and used in RCC- over…

Pricing Concrete Work

The concrete work in a project usually holds a high-end cost in terms of cost and value of the work. It becomes an important step in calculating the cost associated with concrete while preparing the project scale. The cost of making concrete depends on the cost of building materials, mixed materials, labor, and machinery. A concrete contractor builds structures from concrete, usually managing all the steps of the process from assembling ingredients to building a holding structure and preparing the mixture. This person or team oversees the delivery and unloading of goods to ensure that they are done properly. Nowadays, most of the concrete in the United States comes from manufacturers working abroad, usually with branches and plants within the provinces. Contributions can range from pre-mixed concrete to basic ingredients, the consumer company then mixes it. Many American-based concrete companies, however, offer concrete products, such as ballads, bricks, countertop, concrete pipe, and building products, as well as concrete construction and installation materials. This article covers both types of suppliers for this set of building materials.