0
The strength of concrete will continue to rise logarithmically forever. The rated strength is normally the 28-day strength, because at this point it will be at about 95% of its eventual strength, but it will continue to rise.
Structural concrete is normally reinforced with steel. The concrete provides the compressive strength while the steel provides the tensile strength. It is a composite material, with the steel and concrete working together, but the steel can start to deteriorate compromising the strength of the composite structure - perhaps this is what you meant? When the steel corrodes the entire structure is weakened, since it relies on the tensile strength from the steel.
As for when the will corrode, that is completely dependant on how it was constructed. The concrete cover over the reinforcing steel, the structural strength of the concrete, how the concrete was finished and cured, what elements the concrete is exposed to, the orientation of the concrete, the climate where the structure is built, whether there are any protective coatings on the concrete or not, the condition of the steel at the time of construction, whether or not the steel has any protective coatings or not, and many other factors all relate to the condition of the structure. If well designed, well build, and well maintained, a reinforced concrete structure can last 50 years or more with little to no signs of deterioration; however, with poor design, construction, workmanship, and maintenance, the structural integrity can me compromised in only months.
If you're thinking about a future construction, make sure that it is well designed and built, and if you're talking about an existing structure and you have concerns, get it checked by a structural engineer.
What else can I help you with?
Does the strength of cement decrease if it is stored for a long time?
I assume you mean concrete which is a mixture of cement and coarse aggregate stone that has cured properly. There are many factors wich can reduce the strength of concrete over time but if the sample has been stored in an appropriate manner away from detrimental environmental influences the concrete should not weaken much over hundreds of years.
What is ultimate 28 day concrete strength?
The strength of concrete on the 28th day is considered full strength with regard to the engineering calculations for its use. Concrete continues to get hard for 100 years or more, as long as it has water on it now and then. For a 6-sack concrete mix, its 28 day compressive strength should be at 4,000 psi or greater.
What is the effect of sugar in concrete?
Adding sugar to concrete can help to improve workability and slow down the setting time. However, it can also reduce the strength and durability of the concrete in the long run due to potential issues with carbonation and decreased bonding between cement particles. Overall, it is not recommended to use sugar as an additive in concrete unless in specific situations where these effects are desired.
What has the author Long T Phan written?
Long T. Phan has written: 'Experimental plan for testing the mechanical properties of high-strength concrete at elevated temperatures' -- subject(s): High strength concrete, Mechanical properties, Testing, Heating
Will strength of concrete mix will decrease if hot water is used?
As long as the water is liquid, the strength of the finished product will not be diminished by the water temperature.
How long does it take for 4 inches of concrete to cure?
It typically takes about 28 days for 4 inches of concrete to fully cure and reach its maximum strength.
How long does concrete need to cure in order to achieve maximum strength and durability?
Concrete typically needs to cure for at least 28 days to achieve maximum strength and durability. During this time, the concrete undergoes a chemical process called hydration, which strengthens the material and improves its durability.
What are the benefits of using concrete exterior walls in construction projects?
Concrete exterior walls offer several benefits in construction projects, including durability, strength, fire resistance, and energy efficiency. They provide excellent protection against weather elements and can help reduce maintenance costs over time. Additionally, concrete walls have a long lifespan and can contribute to the overall sustainability of a building.
Can you use water lily as a fiber in making concrete roof?
Yes, water lily fibers can be used as a natural reinforcement in making concrete roof materials. Their lightweight and flexible properties can enhance the tensile strength and reduce the overall weight of the concrete mix. Additionally, incorporating water lily fibers may improve the sustainability of construction by utilizing a renewable resource. However, further research is needed to assess their long-term performance and durability in concrete applications.
Can microsilica reduce concrete permeability?
Yes, Silpozz micro silica effectively reduces concrete permeability, helping prevent water and chemical ingress, ideal for long-lasting structural integrity.
Why should I use Silpozz Micro Silica for concrete?
Silpozz Micro Silica concrete strength reduces cracks, and improves durability, ensuring high-quality, long-lasting results for your construction projects.
How long to wait to drive on new concrete?
You should generally wait at least 7 days before driving on new concrete to allow it to cure and gain sufficient strength. However, for optimal results, waiting 28 days is recommended, as this is when concrete typically reaches its full strength. Always check with the contractor or follow specific guidelines provided for your particular installation.
