This document provides information about sealants used in construction. It defines sealants as materials used to prevent the passage of moisture, air, dust, and heat through joints and seams in structures. Sealants serve functions like waterproofing, thermal and acoustic insulation, and acting as fire barriers. They are used in applications like expansion joints, curtain walls, and perimeter joints. The document discusses different types of sealants including silicone, epoxy, polyurethane, and butyl sealants. It outlines advantages like improved durability and design flexibility, as well as potential problems like deterioration, loss of adhesion, and improper sealant selection. The document compares sealants to adhesives, noting sealants typically have lower
What is SEALANT?
Functions
Applications
Types of Construction Sealants
Advantages
Common Problems OR Disadvantages
The Layman’s definition of ‘SEALANT’ is “any material placed in a joint opening generally for the purpose of weather proofing a building, so designed to prevent the passage of moisture, air, dust, and heat through all joints and seams in the structure.”
Horizontal and vertical metal-to-metal and masonry-to-masonry expansion
and control joints
Dissimilar material joints, such as metal-to-masonry or concrete-to-wood
Joints between precast concrete panels
Perimeter of doors and fixed window frames
Exposed exterior masonry control joints
Expansion or control joints in curtain wall
Joints in exterior walls
Concealed masonry-to-floor structure joints
Repair of larger cracks
It is most typically used as transparent glazing material in the building envelope, including windows in the external walls. Glass is also used for internal partitions and as an architectural feature. When used in buildings, glass is often of a safety type, which include reinforced, toughened and laminated glasses.
PAINTINGS OF EXTERIOR AND INTERIOR SURFACESjagrutib22
PAINTINGS OF EXTERIOR AND INTERIOR SURFACES - principal types of coating, Paints - function, purpose, properties, classification, components of paints, different types of paints, why do we need different types of paints, manufacturing procedure, surface preparation for exterior and interior surfaces, defects in paints, cost and everything about paints.
What is SEALANT?
Functions
Applications
Types of Construction Sealants
Advantages
Common Problems OR Disadvantages
The Layman’s definition of ‘SEALANT’ is “any material placed in a joint opening generally for the purpose of weather proofing a building, so designed to prevent the passage of moisture, air, dust, and heat through all joints and seams in the structure.”
Horizontal and vertical metal-to-metal and masonry-to-masonry expansion
and control joints
Dissimilar material joints, such as metal-to-masonry or concrete-to-wood
Joints between precast concrete panels
Perimeter of doors and fixed window frames
Exposed exterior masonry control joints
Expansion or control joints in curtain wall
Joints in exterior walls
Concealed masonry-to-floor structure joints
Repair of larger cracks
It is most typically used as transparent glazing material in the building envelope, including windows in the external walls. Glass is also used for internal partitions and as an architectural feature. When used in buildings, glass is often of a safety type, which include reinforced, toughened and laminated glasses.
PAINTINGS OF EXTERIOR AND INTERIOR SURFACESjagrutib22
PAINTINGS OF EXTERIOR AND INTERIOR SURFACES - principal types of coating, Paints - function, purpose, properties, classification, components of paints, different types of paints, why do we need different types of paints, manufacturing procedure, surface preparation for exterior and interior surfaces, defects in paints, cost and everything about paints.
Pointing - the technique of repairing mortar joints between bricks or other masonry elements.
Finishing - a fine job in building construction process
where it forms the beauty of a building.
It is the presentation based on precast concrete construction which includes each and every point and scope which may be useful to civil engineering students
BUILDING MATERIALS AND CONSTRUCTION 5
B.ARCH (REG 2017)
ANNA UNIVERSITY SYLLABUS
.
THE FOLLOWING PRESENTATION INCLUDES
.
TERMINOLOGY
HISTORY
COMPOSITION
ARCHITECTURAL PAINTS
WE APPLY PAINT FOR
TYPES OF PAINTS
CLASSIFICATION OF PAINTS
CHARACTERISTICS
TYPES OF FAILURE
CAUSES OF FAILURE
ENAMEL PAINT
DISTEMPER PAINT
PLASTIC EMULSION PAINTS
POLYURETHANE
FIRE RETARDANT PAINTS
LUMINOUS PAINTS
BITUMEN PAINTS
FINISHES IN PAINTS
.
PROPERTIES
USES
ADVANTAGES
DISADVANTAGES
IMAGES
introduction . DESIGN OF A CURTAIN WALL . components of a curtain wall . Framing concepts . Materials . Types of curtain walls. Structural problems of curtain walls.
Pointing - the technique of repairing mortar joints between bricks or other masonry elements.
Finishing - a fine job in building construction process
where it forms the beauty of a building.
It is the presentation based on precast concrete construction which includes each and every point and scope which may be useful to civil engineering students
BUILDING MATERIALS AND CONSTRUCTION 5
B.ARCH (REG 2017)
ANNA UNIVERSITY SYLLABUS
.
THE FOLLOWING PRESENTATION INCLUDES
.
TERMINOLOGY
HISTORY
COMPOSITION
ARCHITECTURAL PAINTS
WE APPLY PAINT FOR
TYPES OF PAINTS
CLASSIFICATION OF PAINTS
CHARACTERISTICS
TYPES OF FAILURE
CAUSES OF FAILURE
ENAMEL PAINT
DISTEMPER PAINT
PLASTIC EMULSION PAINTS
POLYURETHANE
FIRE RETARDANT PAINTS
LUMINOUS PAINTS
BITUMEN PAINTS
FINISHES IN PAINTS
.
PROPERTIES
USES
ADVANTAGES
DISADVANTAGES
IMAGES
introduction . DESIGN OF A CURTAIN WALL . components of a curtain wall . Framing concepts . Materials . Types of curtain walls. Structural problems of curtain walls.
*contents
Ceramics (classification)
Clay products employed in building industry.
Tiles
Terracotta
Earthenware
Stoneware
Porcelain
Bricks
Manufacturing process of common tiles.
Types of common tiles used in building industries.
Characteristics of good tiles
WATERPROOFING,Damp proofing, Common Water Damage problems ,Benefits of Waterproofing,How Water can penetrate Concrete Strctures,Why Waterpoofing is Important,What could happen if a building isn’t waterproof , Importance of waterproofing in building ,Waterproofing Methods,Cementitious Waterproofing
Liquid Waterproofing Membrane,
Bituminous Membrane
Bituminous Coating
Polyurethane Liquid Membrane,
Problem solution for waterproofing,What is concrete cancerSix Common cause of concrete cancer include
Autoclaved aerated concrete (AAC) block is a building material made of Portland cement, fine aggregates (fly ash or sand), water and an expansion agent in an autoclaving process heated under pressure which results in the production of air voids in the material, making it less dense, easy to cut/mould and better insulating
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
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1. SEALANTS
ADVANCE CIVIL ENGINEERING MATERIALS(2721401)
M.E. Construction Engineering Management
(Semester II)
Prepared By:
Badatiya Pintu (140490714001)
Patel Vimal (140490714010)
Guided By:
Asst. Prof.
Rusabh Shah
2. CONTENTS
• Introduction
• What is SEALANT?
• Functions
• Applications
• Types of Construction Sealants
• Advantages
• Common Problems OR Disadvantages
• Comparison with Adhesives
3. INTRODUCTION
• The Early 1950s saw the application of the new concept of curtain-wall
construction in high-rise structures through out the world.
• This concept was based on the use of a skeleton of steel or concrete that was
then wrapped in a separate envelope or non bearing curtain wall.
• This reduced the use of the low-rise bearing wall type construction and
introduced greater flexibility in design through the use of precast concrete
panels, glass or metal panels, unit masonry, and combinations of these
materials.
• Construction was also become much faster, also these
structure are inherently more flexible than bearing-wall
construction, but present new problems in weather
proofing.
4. • The introduction of the curtain wall was accompanied by the introduction of
elastomeric sealants that would adhere to the various surfaces and take
greater movement than had existed in the older expansion joints.
• The old oil-based caulking compounds no longer qualified, and the new
materials became “SEALANTS” rather than caulks.
• However, the term “SEALANT” has been too broadly used and now
includes a wide assortment of weather proofing joint materials.
• Sealants or caulking compounds include viscous liquids, pastes, tapes,
gaskets, and even water proofing membranes.
• The materials can either cure to a rubber or remain in a mastic stage.
5. What is SEALANT?
• The Layman’s definition of ‘SEALANT’ is “any material placed in a
joint opening generally for the purpose of weather proofing a building,
so designed to prevent the passage of moisture, air, dust, and heat
through all joints and seams in the structure.”
OR
• The ASTM Committee C-24 definition for ‘SEALANT’ is “in building
construction, a material that has the necessary adhesive and cohesive
properties to form a seal.”
6. Functions
• Sealants, despite not having great strength, convey a number of properties. They seal
top structures to the substrate, and are particularly effective in waterproofing
processes by keeping moisture out (or in) the components in which they are used.
• They can provide thermal and acoustical insulation, and may serve as fire barriers.
• They may have electrical properties, as well. Sealants can also be used for simple
smoothing or filling.
• They are often called upon to perform several of these functions at once.
• A corking sealant has three basic functions: It fills a gap between two or more
substrates; it forms a barrier through the physical properties of the sealant itself and
by adhesion to the substrate; and, it maintains sealing properties for the expected
lifetime, service conditions, and environments.
• The sealant performs these functions by way of correct formulation to achieve
specific application and performance properties.
7.
8. Applications
• Horizontal and vertical metal-to-metal and masonry-to-masonry expansion
and control joints
• Dissimilar material joints, such as metal-to-masonry or concrete-to-wood
• Joints between precast concrete façade panels
• Spandrels
• Perimeter of doors and fixed window frames
• Exposed exterior masonry control joints
• Expansion or control joints in curtain wall
• Joints in exterior walls
• Concealed masonry-to-floor structure joints
• Repair of larger cracks
13. Common Problems OR
Disadvantages
• Deterioration of sealants causes due to prolonged exposure to water, ultraviolet light,
and freeze-thaw cycles.
• Loss of Adhesion caused by the presence of coatings or contaminants that prevent
proper adhesion.
• Cohesive failure due to deterioration of the internal integrity of the sealant; cracking
parallel to the interface of the joint is an indication of this type of failure.
• Inappropriate Choice of Sealant and Improper Joint Design may fail the joint and
losses the adhesion.
• Uncured Sealant that is uncured is often due to incomplete or improper mixing of the
sealant components, or from using materials that have outlived their shelf life losses
the adhesion and fails the joints.
• Bubbling and Blistering of the Surface losses the adhesion and fails the joints.
14. Comparison with Adhesives
• The main difference between adhesives and sealants is that sealants
typically have lower strength and higher elongation than adhesives do.
• When sealants are used between substrates having different thermal
coefficients of expansion or differing elongation under stress, they need
to have adequate flexibility and elongation.
• Sealants generally contain inert filler material and are usually
formulated with an elastomer to give the required flexibility and
elongation.
• They usually have a paste consistency to allow filling of gaps between
substrates. Low shrinkage after application is often required.
• Many adhesive technologies can be formulated into sealants.