Materials engineering Concrete

In summary, the longer you allow the cement to cure there will be an increase in compressive strength.
  • #1
physocs1
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Homework Statement


How does the compressive strength of concrete samples compared to the expected compressive strength of cured concrete. If different explain why.

The Attempt at a Solution



I think the question is asking what is the relationship between time and curing. And I think that the longer you allow the cement to cure there will be an increase in compressive strength..

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  • #2
The question doesn't make much sense as written. Did you miss out some words?
 
  • #3
This is the whole lab questions about the concrete lab.

Questions to be addressed in the lab report: 1. Fill in the group data sheet posted in the lab and include this table in your report.
2. Your report should include all data related to the preparation of your concrete, the group data sheet, and any calculations pertaining to these items.
3. Plot compressive strength (y) versus cure time (x) for the two mixtures (on one plot). Add a polynomial trend line for both mixtures.
4. From the class results, comment on how the mix ratio, weight % water, curing time, water/cement ratio, temperature, type of cement used and slump affect concrete’s compressive strength. What was the percent gain in strength between the 7 day and 28 day samples? What causes the difference? In addition, you need to note the fineness modulus of the concrete sand from the sand sieve analysis in rotation A.
5. Be sure to include your observations of the physical properties of the concrete mixtures.
6. How does the compressive strength of the samples compare to the expected compressive strength of cured concrete? If different, explain why.
 
  • #4
Question 4 asks you to compare the effect of quite a few different variables including the mix ratio. I can't tell from the info provided if they were expecting you to discover anyone sample was stronger or weaker than expected. We're ther any surprises?
 
  • #5
The longest cured cement was the strongest with compression strength
 
  • #6
I would expect that but was there a difference between the other variables mentioned in Q4? Does adding more cement always make it stronger?
 

Related to Materials engineering Concrete

What is materials engineering concrete?

Materials engineering concrete is a type of concrete that is specifically designed to have certain physical and chemical properties. It involves the use of different construction materials and techniques to create a more durable and efficient concrete for various applications.

What are the main components of materials engineering concrete?

The main components of materials engineering concrete are cement, aggregates (such as sand and gravel), and water. Other materials such as admixtures, fibers, and supplementary cementitious materials may also be added to enhance the properties of the concrete.

What are the advantages of using materials engineering concrete?

Materials engineering concrete offers numerous advantages, including increased strength, durability, and resistance to various environmental factors such as freezing and thawing, chemical exposure, and abrasion. It also allows for more efficient use of materials, resulting in cost savings.

What are some common applications of materials engineering concrete?

Materials engineering concrete is commonly used in the construction of highways, bridges, buildings, and other structures that require high strength and durability. It is also used in various infrastructure projects, such as dams, tunnels, and water treatment facilities.

How is the quality of materials engineering concrete ensured?

The quality of materials engineering concrete is ensured through various testing and quality control measures. This includes testing the materials used, monitoring the mixing and placing processes, and conducting strength and durability tests on the finished product. Quality control is essential to ensure that the concrete meets the required specifications and performs as expected.

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