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Concrete - Wikipedia

en.wikipedia.org/wiki/Concrete

Concrete is a composite material composed of coarse aggregate bonded together with a fluid .... Reinforcement is often included in concrete. Concrete can be formulated with high compressive strength...

High-Strength Concrete - The Portland Cement Association

www.cement.org/cement-concrete-basics/products/high-strength-concrete

High Strength Concrete In the early 1970s, experts predicted that the practical limit of ready-mixed concrete would be unlikely to exceed a compressive strength  ...

Strength development in concrete - Understanding Cement

www.understanding-cement.com/strength.html

Many factors influence the rate at which the strength of concrete increases after mixing. Some of these are discussed below. First, though a couple of definitions ...

What is Concrete Strength and what are the factors affecting it?

www.engineeringcivil.com/what-is-concrete-strength-and-what-are-the-factors-affecting-it.html

Strength of concrete is directly related to the structure of the hydrated cement paste. Air in concrete produces voids. Excess of water in concrete evaporate leave ...

Properties of concrete - Wikipedia

en.wikipedia.org/wiki/Properties_of_concrete

Concrete has relatively high compressive strength, but significantly lower tensile strength, and as such is usually reinforced with materials that are strong in ...

CIP 35 - Testing Compressive Strength of Concrete - NRMCA.com

www.nrmca.org/aboutconcrete/cips/35p.pdf

The compressive strength is measured by breaking cylin- drical concrete specimens in a compression-testing machine. The compressive strength is calculated ...

Role of Concrete Curing - The Portland Cement Association

www.cement.org/for-concrete-books-learning/concrete-technology/concrete-construction/curing-in-construction

The 70 percent strength level can be reached sooner when concrete cures at ... Higher curing temperatures promote an early strength gain in concrete but may ...

The 28-Day Myth - National Precast Concrete Association

precast.org/2013/10/28-day-myth/

Oct 28, 2013 ... Some mix designs reach 5,000 psi of compressive strength in seven days – or ... Many cement pastes will cease hydration before one year, and ...

What is the minimum curing time for cement concrete? - Quora

www.quora.com/What-is-the-minimum-curing-time-for-cement-concrete

Figure explains better! The period of curing of concrete is most important as it is very essential ... For most concrete structures, the curing period at temperatures above 5º C should be a minimum of 7 days or until 70% of the specified ... Minimum Curing time for Concrete to attain maximum strength is 28days if you are using ...

Popular Q&A
Q: What are some ways to increase the strength of a concrete? - Quor...
A: A2A thanks. Some great answers here already. What I can add to this is. Curing. Ensure that the concrete is hydrated for a minimum of 7 days (or as instructed ... Read More »
Source: www.quora.com
Q: What is the required compressive strength of grade 35 concrete at...
A: NOTE : Compressive strength of cement can not be tested as such, because if the cubes are made out of pure cement, the cement shrinks, and cracks start to app... Read More »
Source: www.quora.com
Q: How is the water-cement ratio associated with the strength of ...
A: The water-cement ratio is one of the most important aspect when it comes to maintaining the strength of Concrete. The ratio depends on the grade of concrete a... Read More »
Source: www.quora.com
Q: What are the various ways to measure the strength of a cement ...
A: The best way for testing concrete is of course concrete cubes of size 150mm* 150mm*1500mm size. However, one may also resort to some other tests NDT ( Non ... Read More »
Source: www.quora.com
Q: Why we use high strength concrete in foundation and columns while...
A: Just adding to what was said already, concrete is used in beams, columns, etc also because of its performance in the event of a fire. Steel loses its strength ... Read More »
Source: www.quora.com