Difference between Construction Joint and Expansion Joint | Types of Movement Joints | Why Required Movement Joint In Concrete

Introduction of Movement Joint In Concrete

Temperature variation Loading ( Static and Dynamic, Including Gravity, Wind, and Earthquakes ) Atmospheric humidity changes Ground movements ( Settlement, Consolidation, Shrinkage, Heave , etc.). Read more

Early-age thermal movement from the rise in concrete temperature during cement hydration and, more significantly , the subsequent drop back toward ambient temperature Irreversible drying shrinkage reep under stress . Read more

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Types of Movement Joints / Joints in Concrete

Isolation Joints / Free Joints. Free Contraction Joints. Partial Contraction Joints. Tied Partial Contraction Joints. Debonded Partial Contraction Joints. Expansion Joints. Hinged Joints. Sliding Joints and Bearings Joints In Concrete. Seismic Joints. Read more

#1. Isolation Joints / Free Joints In Concrete:

In structures above ground level (particularly in roof slabs and exposed soffit slabs) to accommodate temperature variation movements. Temperature variations are both of smaller magnitude and slower to occur below ground level, due to the 'heat sink' effect of the subsoil and reduced exposure to climatic extremes . In structures generally, to accommodate differential ground movements, especially when adjacent elements or blocks exert different levels of bearing pressure and/or have foundations with different settlement characteristics, such free movement joints are also known as settlement or isolation joints. Read more

#2. Free Contraction Joints In Concrete:

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#3.1. Tied Partial Contraction Joints In Concrete:

The tied contraction joint has a reduced area of reinforcement across the joint . This assists shear transfer and prevents overall free opening of the joint while permitting relief of early-age thermal movements and shrinkage on the surface . This reduces the possibility of unwelcome surface cracking from such causes occurring elsewhere . This type of joint is much used between adjacent pours in water-containing structures and large ground-bearing slabs. Read more

#3.2. Debonded Partial Contraction Joints In Concrete:

In this variant, some reinforcement is provided across the joint as for the tied contraction joint . It is debonded on one side of the joint so that unrestrained contraction can occur across the full thickness of the section to allow early-age thermal movements and shrinkage to occur. This type of joint is used less often than tied contraction joints . It is most commonly used in large ground-bearing floor slabs, roads, and hard-standing . The reinforcement is usually provided in the form of dowel bars . Read more

#4. Expansion Joints In Concrete:

#6. Sliding Joints and Bearings Joints In Concrete:

Construction Joint Vs Expansion Joint

Sr.No. Construction Joint Expansion Joint 1 A construction joint vs control joint occurs when there are multiple concrete placements. An expansion joint is used in concrete and steel. 2 It can occur between different days of concrete placements. An expansion joint allows the concrete or steel to expand or contract with daily temperature variations. 3 If you don’t allow this, you may get crake to develop in concrete If you don’t allow this, you may get buckling, or spalling, or total failures. 4 Type of Construction Joint1. Free Contraction Joints2. Partial Contraction Joints2.a. Tied Partial Contraction Joints2.b. Debonded Partial Contraction Joints Type of Expansion Joint1. Free Expansion Joints2. Reinforced Expansion Joints Read more

Concrete Expansion Joint

Types of Expansion Joints in Buildings

Expansion Joint Between Buildings

Expansion Joint in Building

Keyed Concrete Joint

Is Expansion Joint a Construction Joint?

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Difference between Construction Joint and Expansion Joint | Types of Movement Joints | Why Required Movement Joint In Concrete

Introduction of Movement Joint In Concrete

Why Required Movement Joint In Concrete?

Types of Movement Joints / Joints in Concrete

#1. Isolation Joints / Free Joints In Concrete:

#2. Free Contraction Joints In Concrete:

#3. Partial Contraction Joints In Concrete:

#3.1. Tied Partial Contraction Joints In Concrete:

#3.2. Debonded Partial Contraction Joints In Concrete:

#4. Expansion Joints In Concrete:

#5. Hinged Joints In Concrete:

#6. Sliding Joints and Bearings Joints In Concrete:

#7. Seismic Joints:

Construction Joint Vs Expansion Joint

Concrete Expansion Joint

Expansion Joint in Building Construction

Types of Expansion Joints in Buildings

Joints in Buildings

Expansion Joint Between Buildings

When Should Expansion Joints Be Used?

Expansion Joint in Building

How Many Expansion Joints Are in a Building?

Keyed Concrete Joint

Expansion Joint in Construction

Is Expansion Joint a Construction Joint?

What Is the Purpose of Expansion Joints in Concrete?

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Sr.No.	Construction Joint	Expansion Joint
1	A construction joint vs control joint occurs when there are multiple concrete placements.	An expansion joint is used in concrete and steel.
2	It can occur between different days of concrete placements.	An expansion joint allows the concrete or steel to expand or contract with daily temperature variations.
3	If you don’t allow this, you may get crake to develop in concrete	If you don’t allow this, you may get buckling, or spalling, or total failures.
4	Type of Construction Joint1. Free Contraction Joints2. Partial Contraction Joints2.a. Tied Partial Contraction Joints2.b. Debonded Partial Contraction Joints	Type of Expansion Joint1. Free Expansion Joints2. Reinforced Expansion Joints