Q3) Answer the followings: 1-Under what conditions would you recommend the use of sulphate resisting cement? 2- What is the effect of aggregate surface roughness on the concrete strength? 3-Why does workability of fresh concrete decrease with time? 4. List and explain methods of

Q3) Answer the followings: 1-Under what conditions would you recommend the use of sulphate resisting cement? 2- What is the effect of aggregate surface roughness on the concrete strength? 3-Why does workability of fresh concrete decrease with time? 4. List and explain methods of

Fundamentals Of Construction Estimating

4th Edition

ISBN:9781337399395

Author:Pratt, David J.

Publisher:Pratt, David J.

Chapter11: Pricing Concrete Work

Section: Chapter Questions

Problem 4RQ

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Concept explainers

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.

Question

Q2) Explain the followings:
Structure
33
of hydrated cement, Drying shrinkage, High alumina cement,
Quartering, Fasticity
Q3) Answer the followings:
1-Under what conditions would you recommend the use of sulphate resisting
cement?
2- What is the effect of aggregate surface roughness on the concrete strength?
3-Why does workability of fresh concrete decrease with time?
4. List and explain methods of
5- Under what conditions would you recommend the
6-1 ist and explain methods of concrete
7. What are the difficulties in het weather concreting?
8- Explain the effect of freezing on fresh concrete.
a concrete.
Plactic
odmixtures?

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