ConstKnow Aims to provide valuable insights and practical tips for anyone interested in Civil Engineering

Wednesday, August 11, 2021

Idea about concrete | Compressive strength of concrete | Grade of concrete






Idea about concrete |  Compressive strength of concrete | Grade of concrete |  Curing of concrete |  concrete mix ratio  |  types of concrete   | Concrete noun |  Concrete meaning


Concrete

Concrete meaning or Concrete noun is a composite material made up of a combination of cement, water, sand, and aggregate. Mix in concrete mixer or concrete mixer machine with concrete mix ratio. It is a durable material used in construction for a wide variety of applications, including building foundations, walls, floors, and bridges.

Cement is the binding material that holds the mixture together, while water activates the cement and enables the mixture to harden and set. Sand and aggregate are used to provide bulk and fill the spaces between the cement particles, while also contributing to the strength and durability of the final product.

The proportions of each ingredient used in the concrete mixture can be adjusted to achieve different compressive strength, density, and workability characteristics. The mixture is poured into moulds or forms and allowed to set and harden into a solid structure. Once hardened, concrete can be shaped, cut, and finished as needed to achieve the desired appearance and functionality.

Concrete is known for its compressive strength, durability, and resistance to fire, water, and weather. It can also be reinforced with steel to further enhance its strength and load-bearing capacity. With its durability, concrete remains one of the most commonly used materials in construction today.



Compressive strength of concrete:

Compressive strength is the ability of a material, such as concrete, to withstand compression or pressure.



Grade of concrete:

The grade of concrete refers to its strength, which is measured in terms of its compressive strength. The grades of concrete are

M10,M15,M20,M25 AND M30 etc.

In this M stand for Mix.


Curing of concrete:

Curing of concrete is the process of maintaining adequate moisture and temperature conditions in freshly placed concrete to ensure its hydration and development of strength and durability. Proper curing is essential to ensure the desired properties of concrete, including compressive strength, durability, impermeability, and resistance to cracking.


Density of concrete:

the density of concrete is an important factor to consider in construction, as it affects the weight, volume, and overall performance of the structure. It is used in calculating the total weight of a structure and determining the required compressive strength of its foundation. The density of concrete also affects its thermal properties, as denser concrete provides better thermal insulation.


concrete mix ratio:

The concrete mix ratio refers to the proportion of the different components used to make concrete, namely cement, water, coarse aggregates, and fine aggregates ( sand). The mix ratio is usually expressed in terms of the amount of cement in the concrete mix, as this is the most important component in determining the strength and durability of the concrete.


GRADE OF CONCRETE

MIX RATIO

COMPRESSIVE STRENGTH AFTER 28 DAYS

M10

1:4:8

10 N/MM2

M15

1:2:4

15 N/MM2

M20

1:1.5:3

20 N/MM2

M25

1:1:2

25 N/MM2



Concrete meaning is a durable material that can be used in a variety of construction applications, including:

Building foundations: Concrete is often used to create strong and stable foundations for buildings, whether they are residential, commercial, or industrial. The concrete can be poured directly onto the ground or used as a foundation for other materials, such as bricks or steel.

Walls and floors: Concrete can also be used to create walls and floors for buildings. It is often used in its raw form, as exposed concrete, but can also be covered with a variety of finishes, such as tiles, wood, or carpet.

Bridges: Concrete is frequently used in the construction of bridges due to its strength and durability. It can withstand heavy loads and exposure to harsh weather conditions.

Roads and pavements: Concrete is commonly used to create roads and pavements due to its ability to withstand heavy traffic and extreme weather conditions.

Water storage and drainage systems: Concrete is also used to create water storage tanks, dams, and drainage systems due to its ability to withstand water pressure and resist erosion.

Decorative elements: Concrete can also be used to create decorative elements in architecture, such as sculptures, fountains, and retaining walls.

Overall, concrete is a durable material that can be customized to meet the specific needs of a construction project. Its strength, durability make it an ideal choice for a wide variety of construction applications

types of concrete

1) Normal weight concrete: It is used for general-purpose applications such as floors, walls, and foundations.

2) Lightweight concrete: This type of concrete has a lower density than normal weight concrete and can be used to reduce the weight of a structure. It is made by replacing the coarse aggregates with lightweight materials, such as expanded shale, clay, or perlite.

3) High-strength concrete: This is a type of concrete with a compressive strength of over 40 mpa . It is used for applications where high strength is required, such as tall buildings, bridges, and infrastructure projects.

4) Self-compacting concrete: This type of concrete is highly fluid and can flow into and around complex forms without the need for vibration. It is used for applications where high-quality finishes and intricate shapes are required, such as architectural and decorative concrete.

5) Fiber-reinforced concrete: This type of concrete contains small fibers, such as steel or synthetic fibers, that are added to improve its tensile strength and toughness. It is used for applications where high. resistance to cracking and impact is required, such as industrial floors and pavements.

6) Decorative concrete: This is a type of concrete that has been specially designed and formulated to provide an aesthetic finish to a surface. It can be colored, stamped, or polished to create a variety of finishes, such as exposed aggregate, stained, or patterned concrete.


In Marathi language

Concrete म्हणजे सिमेंट ,रेती, खडी, आणि पाणी याचे मिस्रन
हे मिश्रण द्रव प्रकारचे असते

हे मिश्रण द्रव प्रकारचे असल्यामुळे आपण कोणताही आकार बनवू शकतो

कॉंक्रिट चि गुनवत्ता त्याचा मटेरियल वर अवलम्बून् असते

Concrete वेगवेगळ्या ग्रेड मध्ये तयार केल्या जाते
जसे कि M10,M15,M20,M25 ,M30 etc

या प्रत्येक grade चे एक महत्त्व आहे आणि त्यात लागणाऱ्या मटेरियल ची quantity पण वेगळी आहे

जर आपण म्हटले की M20 म्हणजे 
1:1.5:3
1 सिमेंट
1.5 रेती
3 खडी
M  हा mix साठी वापरतात.


READ MORE - Types of cement


जर आपण या मिक्स चे कॉंक्रिट बनवले 
आणि 28 दिवसा नंतर  comprasssive testing मशीन वर check केले ( अर्थात cube बनवून्) तर concrete चि compressive strength हि 20 N/mm2 येते

जसा 


GRADE OF CONCRETE

MIX RATIO

COMPRESSIVE STRENGTH AFTER 28 DAYS

M10

1:4:8

10 N/MM2

M15

1:2:4

15 N/MM2

M20

1:1.5:3

20 N/MM2

M25

1:1:2

25 N/MM2


M25 चा वर grade साठी mix design करावे लागते

पाणी हा कॉंक्रीटचा अत्यंत महत्त्वाचा घटक आहे concrete तयार करताना पाण्यावर नियंत्रण ठेवावे लागते

Concrete चा compressive strength वर पाण्याबरोबर रेती आणि खडी यांच्या Quality चा ही फरक पडतो

READ MORE - cement and its use


या  नंतर आपण काँक्रीटमध्ये मिक्स केलेले पाण्या बद्दल माहिती घेऊ

3 comments:

Recent Story

Featured News