lecture bricks and blocks masonry
TRANSCRIPT
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BRICKS &
BLOCKS
(MASONRY) BLD62003 BUILDING MATERIALS
BACHELOR OF QUANTITY SURVEYING (HONS.)
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MAJOR TOPICS
MASONRY
• History • Mortar • Grout • Brick
• Types • Bond • Joints
• Structural Clay Tile • Concrete Block (CMU)
BLD62003_MAK_STONES AND ROCKS
• Masonry Panels • Gypsum Block • Glass Block • Stone • Stone Masonry
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
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HISTORY
BLD62003_MAK_STONES AND ROCKS
One of the oldest manufactured building materials Sun-baked brick was found in the remains of structures in the Tigres-Euphrates basin as early as 6000 B.C. Romans also used thin bricks in thick mortar made of volcanic materials and lime. 1633 – 1st brick buildings erected in Manhattan Island (imported from Holland & England)
An assembly or combination of small building units made of clay, shale, concrete, glass, gypsum, or stone that are set in mortar. Masonry consists entirely or partially of hollow or solid units laid contiguously in mortar.
DEFINING MASONRY
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
“mortar is the stuff you can see between bricks”
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• Mortar is the material that sticks two masonry units together - it is the stuff you can see between bricks
MORTAR
• Must conform to ASTM C270 • 4 basic types of mortar used: M, S, N, O • Composed of: Portland cement,
hydrated lime, sand, and water • Key to forming a strong and durable
bond with masonry units
BLD62003_MAK_STONES AND ROCKS
CORRECT & INCORRECT WAY IN ASSEMBLYING
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MORTAR
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Type Avg
Compressive
Strength
Use
M 2500 psi Masonry below grade and in
contact with earth
S 1800 psi Where maximum flexural
strength is required (winds
>80 mph)
N
750 psi General use in exposed
masonry above grade;
parapets, chimneys, and ext.
walls subjected to severe
weathering
O 350 psi Solid unit load-bearing walls
Where compressive strength
< 100 psi
TYPES OF MORTAR
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MORTAR MORTAR BASICS
PROPERTIES
• Have a tendency to shrink very little
• High degree of resistance to moisture penetration
FUNCTIONS
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JOINTS
• Brick masonry mortar made of Portland cement, hydrated lime, and sand (stone masonry uses white Portland cement [non staining].
• Retempering – adding water to the mortar mix to maintain consistency
• Mortar mix should be used within 2 – 2 ½ hours after initial mix is prepared
• Efflorescence – the soft white powder appearing on the face of brick; caused by salts in the brick or mortar brought to the surface
• Possess adequate strength to resist forces applied to it
• Provide aesthetic qualities to the structure through the use of color and type of joint
• Joint sizes vary • Facing brick – 3/8” to
½” • Building brick – ½” • Glazed brick – 1/4 “
• Although many types of joints exist , the most weatherproof & recommended are: V-shaped, Weathered, & Concave
• Joints may be formed by using a trowel, steel rod, or specialized tools
TYPES OF JOINTS
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MORTAR
BLD62003_MAK_STONES AND ROCKS
TYPES OF MORTAR JOINTS
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
“Grout is a construction material used to embed rebars in masonry walls, connect sections of pre-cast concrete, fill voids, and seal joints”
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BLD62003_MAK_STONES AND ROCKS
GROUTS
• The water/cement ratio is less critical in grout than in mortar or concrete
• It is intended to be very “fluid” in order to function in it’s “binding” capacity (slump of 8-11 inches)
• May be used to fill cavities between masonry walls (often around vertical reinforcement )
• Grouts (fills cavities in the masonry unit).
DEFINITION
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BLD62003_MAK_STONES AND ROCKS
GROUTS
• Grouts (fills cavities in the masonry unit).
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BLD62003_MAK_STONES AND ROCKS
GROUTS
• Grouts (fills cavities in the masonry unit).
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• The term “masonry” refers to construction with stone masonry describes the stonework which is incorporated into the building
• Masonry is held together with mortar (between pieces of masonry) and grout (fills cavities in the masonry unit).
• Mortar is the material that sticks two masonry units together - it is the stuff you can see between bricks
INTERACTION MASONRY , MORTAR & GROUT
BLD62003_MAK_STONES AND ROCKS
MASONRY
MORTAR
GROUTS
• (fills cavities in the masonry unit).
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BRICKS
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
“A brick is a block or a single unit of a kneaded clay-bearing
soil, sand and lime, or concrete material, fire hardened or air
dried, used in masonry construction.”
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BRICKS
PROPERTIES TYPES
BLD62003_MAK_STONES AND ROCKS
CLASSES OF BRICKS
• 2 Types
TYPE I : SOLID
• May be solid or hollow core (holes called “cells”)
• Cells should not exceed 25 % of the volume of the unit
• Bricks vary in size, color, shape, and texture.
TYPE II: WITH HOLES
• Solid brick used where holes may be unsightly (steps or window sills
TYPE I : SOLID
TYPE II : WITH HOLES
• Holes in Brick: • Help units fire properly • Promote bonding with
mortar • Reduce overall weight • Make units easier to handle
• Adobe – sun-dried clays and a binder
• Kiln-burned – natural sand and clay or shale (most widely used)
• Sand-lime – pearl-grey in color, dolomite lime is mixed with clean sand, pressed, and allowed to harden in closed vessels under steam pressure
• Concrete – portland cement and suitable aggregate, formed in molds
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BRICKS
BRICK KILNS BRICK TYPES/ SIZES
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(I) COMMON
DIFFERENT BRICK TYPES
• Burning of brick is done in 4 stages • Water smoking:
400 °F • Dehydration:
300 -1800 °F • Oxidation: 1000
– 1800 °F • Vitrification:
1600 – 2400 °F • Flashing (oxygen
reduction)– produces different colors or color shading
• Cooling down – done in 2-3 days; rate of cooling will affect cracking, and color
• Common (now called Building) • Most widely used • Dark orange to deep red
color • Many finishes & sizes
available • Meets ASTM C62 grading
criteria: • SW – severe weathering for
exposure to heavy rainfall & freezing
• MW – moderate weathering for avg. moisture and minor freezing
• NW – Negligible weathering for exposure to moisture & freezing
(II) FACE BRICKS
(III) GLAZED FACE BRICKS
(IV) FIRE BRICKS
(V) PAVING BRICKS
(I) COMMON BRICKS
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BRICKS
BRICK TYPES/ SIZES
BLD62003_MAK_STONES AND ROCKS
(I) COMMON
DIFFERENT BRICK TYPES
(II) FACE BRICKS
(III) GLAZED FACE BRICKS
(IV) FIRE BRICKS
(V) PAVING BRICKS
(II) FACE BRICKS
• Made from clay, shale, fire clay, or a mixture, under controlled conditions
• Meets ASTM C216 standard • Appearance types:
• FBS- general use in exposed & interior walls where wide color ranges & variation in sizes are permitted
• FBX- used in exterior & interior walls where a high degree of mechanical perfection, narrow color range & little variation of size is required
• FBA- nonconformity in size, color, & texture
BRICK TYPES/ SIZES
(III) GLAZED FACE BRICKS
• Bricks sprayed with a ceramic glaze and fired at high temperature to fuse glaze to the brick
• Finishes may appear dull, satin, or glossy
(IV) FIRE BRICKS
• Made of clays with a large amount of alumina, silica, flint, and feldspar
• These bricks are used in fireplaces, chimney stacks, incinerators, and many industrial settings
(V) PAVING BRICKS
• Bricks are burned at much higher temperatures to make them resist water and wear from traffic
BRICK TYPES/ SIZES
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Common Face
Glazed-face fire bricks
**Refer color coding
Paving
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Common Face
Glazed-face Fire bricks
**Refer color coding
Paving
APPLICATIONS OF BRICKS
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BLD62003_MAK_STONES AND ROCKS
Unit Nominal Dimension
(in.)
W x H x D
Actual Dimension (in.)
**
W x H x D
Modular 4 x 2 2/3 x 8 3 5/8 x 2 ¼ x 7 5/8
Utility 4 x 4 x 12 3 5/8 x 3 5/8 x 11 5/8
** Note: actual dimensions may vary among manufacturers of brick – dimensions noted from Graphics Standards 2000 publication
NOMINAL VS ACTUAL SIZE
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BRICK BOND
BLD62003_MAK_STONES AND ROCKS
• Bond – the arrangement of bricks in rows (courses). • Bonds are designed for:
• Appearance • To tie together a structural or outer wall (wythe) to an inner wall
• Wythe – a vertical section of wall one brick thick
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BRICK BOND
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BRICK BOND
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BRICK BOND
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BRICK BOND
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EXAMPLES OF BRICKS
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BRICKS COLOURCAST
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TYPES
BRICK WALLS &
TIES
FACED WALLS
REINFORCED BRICK MASONRY
PROPERTIES OF BRICK WALLS
SOLID WALLS
BRICK WALLS & TIES
BLD62003_MAK_STONES AND ROCKS
• May be :-
• bearing (supports any vertical load)
• or non-bearing
(I) LOAD BEARING WALLS
(I)NON LOAD BEARING WALLS
• Solid walls- 2 or more
wythes bonded together by ties, headers
CAVITY WALLS
• Cavity walls – 2 walls spaced 2 in. apart by metal ties;
may fill cavity with insulating material; Weep holes must be in outer wall in order for moisture to escape ; not allowed in earthquake zones
VENEERED WALLS
TYPES
• brick masonry units bonded to a backup wall of another material (common brick, hollow structural clay tile, or CMU)
• facing material is securely tied to a structural wall but NOT bonded to it (common residential wood-frame construction)
• steel reinforcement is placed vertically & horizontally and often grout surrounds it (spacing governed by local code requirements)
TIES
• May be standard unit ties/ adjustable • Number and placement of ties
depends on application and building code requirements
TYP
ES DIFFERENT BRICK WALLS
(I) SOLID WALLS
(II) CAVITY WALLS
(III) FACED WALLS
(IV) VENEERED WALLS
(V) REINFORCED BRICK MASONRY
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TIES TYPES
BLD62003_MAK_STONES AND ROCKS
Z- TIES
DIFFERENT TYPES OF TIES
ADJUSTABLE BOX ANCHOR
CORRUGATED WALL TIES
(II) ADJUSTABLE BOX ANCHOR
TIES (PROPERTIES)
(III) Z- TIES
• May be standard unit ties or adjustable
• Number and placement of ties depends on application and building code requirements
• designed to tie multi-wythe walls
• multi- wythe walls when fully grouted
(I) “CORRUGATED “ WALL TIES
• veneer walls
TIES TYPES TIES
TIES TYP
ES
TIES
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BLOCKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
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STRETCHER
TYPES OF BLOCK
BLD62003_MAK_STONES AND ROCKS
Used in straight wall sections.
One flat end to create attractive walls at corners.
Has special grooves, can be laid to receive window.
Use to make door ways so the openings are attractive and secure.
Used to prevent cutting of blocks when only half a block is needed.
Used as top course of block on a poured floor.
CORNER
SASH
JAMB
HALF
L-BLOCK
STRETCHER
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STRETCHER
TYPES OF BLOCK
BLD62003_MAK_STONES AND ROCKS
Used in straight wall sections.
One flat end to create attractive walls at corners.
Has special grooves, can be laid to receive window.
Use to make door ways so the openings are attractive and secure.
Used to prevent cutting of blocks when only half a block is needed.
Used as top course of block on a poured floor.
CORNER
SASH
JAMB
HALF
L-BLOCK
CORNER
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STRETCHER
TYPES OF BLOCK
BLD62003_MAK_STONES AND ROCKS
Used in straight wall sections.
One flat end to create attractive walls at corners.
Has special grooves, can be laid to receive window.
Use to make door ways so the openings are attractive and secure.
Used to prevent cutting of blocks when only half a block is needed.
Used as top course of block on a poured floor.
CORNER
SASH
JAMB
HALF
L-BLOCK
SASH
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STRETCHER
TYPES OF BLOCK
BLD62003_MAK_STONES AND ROCKS
Used in straight wall sections.
One flat end to create attractive walls at corners.
Has special grooves, can be laid to receive window.
Use to make door ways so the openings are attractive and secure.
Used to prevent cutting of blocks when only half a block is needed.
Used as top course of block on a poured floor.
CORNER
SASH
JAMB
HALF
L-BLOCK
JAMB
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TYPES OF BLOCK
BLD62003_MAK_STONES AND ROCKS
Use to make door ways so the openings are attractive and secure.
JAMB
JAMB
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STRETCHER
TYPES OF BLOCK
Used in straight wall sections.
One flat end to create attractive walls at corners.
Has special grooves, can be laid to receive window.
Use to make door ways so the openings are attractive and secure.
Used to prevent cutting of blocks when only half a block is needed.
Used as top course of block on a poured floor.
CORNER
SASH
JAMB
HALF
L-BLOCK
HALF
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STRETCHER
TYPES OF BLOCK
Used in straight wall sections.
One flat end to create attractive walls at corners.
Has special grooves, can be laid to receive window.
Use to make door ways so the openings are attractive and secure.
Used to prevent cutting of blocks when only half a block is needed.
Used as top course of block on a poured floor.
CORNER
SASH
JAMB
HALF
L-BLOCK
HALF
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STRETCHER
TYPES OF BLOCK
CORNER
SASH
JAMB
HALF
L-BLOCK
BLD62003_MAK_STONES AND ROCKS
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LAYING BLOCKS PROCEDURE
BLD62003_MAK_STONES AND ROCKS
• Lay several stretcher blocks in place by working away from the end or corner block.
• Use the end of the trowel handle to tap the
block until each block is plumb, level, and the course is straight.
• Apply a mortar bed on top of the first course
in preparation for the second course.
• If extra strength is needed in the wall, install reinforcement in the mortar bed.
• Use a line to keep the courses straight. line is positioned to be level along the top of block.
• When a block must be cut, use a masons hammer and make multiple strikes along the line to cut; then make one sharp strike on the web.
• Check the height to be sure each new course is an additional 8 inches high.
• After the mortar dries and hardens slightly, finish the joints by rubbing it with a broken piece of block.
• If a joint other than a flush joint is desired, use a jointer to compress the mortar and create a watertight joint.
• Tools are available to create joints that are concave, v-shape, flush or raked.
• Spread a layer of mortar called a mortar bed as the footer.
• Position the block on the mortar bed so that its outside corner rests where the outside corner of the wall should be.
• Level the block by first placing the level across the block and then lengthwise along the block.
• Turn several stretcher blocks on end and apply mortar to the ears with a wiping or swiping stroke of the trowel.
• As the block laying progresses, cut off excess mortar with the trowel.
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BRICKS& BLOCKS
BLD62003_MAK_STONES AND ROCKS
COMMON CONCRETE BLOCK USED IN CONSTRUCTION
COMMON METHOD OF PICKING UP AND SETTING CONCRETE BLOCKS
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BRICKS & BLOCKS
BLD62003_MAK_STONES AND ROCKS
NOTE#
A building laid by using whole and half blocks
• Door openings will have 2" jambs on both sides and top. • Door will be a standard height (44" x 6'8"). • Door sill will accommodate a concrete floor inside. • Window openings will accommodate standard size windows. • Space above the top of the door will accommodate appropriate trim under the eaves of the roof. • Reinforced concrete lintels carry the weight over door and window openings. • There are no cut block in
the wall. Therefore, the wall can be built with a minimum of cost and labor.
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BRICKS & BLOCKS
BLD62003_MAK_STONES AND ROCKS
PLACEMENT OF CORNER POLES FOR CONSTRUCTIONG A BLOCK WALL
PROCEDURE OF LAYING CONCRETE BLOCK WALLS
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BRICKS & BLOCKS
BLD62003_MAK_STONES AND ROCKS
Method of laying concrete blocks. Good workmanship is requires straight courses with face of the wall plumb and true (left hand side)
Usual practice of applying mortar to concrete blocks
(right hand side)
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BRICKS & BLOCKS
BLD62003_MAK_STONES AND ROCKS
8" x 8" x 16" Concrete Block Corner in the Running Bond (right bottom)
Showing detail of joining an interior and exterior wall in concrete block construction.(left bottom)
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BRICKS & BLOCKS
BLD62003_MAK_STONES AND ROCKS
typical 3/8" joint
8" x 8" 16" block
Concave joint V-Joint Flush Joint Raked
Joint
Types of joint finishes used on block walls
Types of joint finishes used on block walls
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MORTAR MORTAR BASICS
DEFINITION FUNCTIONS
BLD62003_MAK_STONES AND ROCKS
BASIC TERM
TYPES OF BRICKS
• Laying of bricks bonded together with mortar is known as brick masonry.
Types of Bricks
Modular
Bricks
Conventional
Bricks
• HEADER • STRETCHER.
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TYPES OF CLOSE: KING CLOSER
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TYPES OF CLOSE: QUEEN CLOSER
BLD62003_MAK_STONES AND ROCKS
1/2
1/2
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TYPES OF CLOSE: MITRED CLOSER
BLD62003_MAK_STONES AND ROCKS
Angle 45° to 60°
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TYPES OF CLOSE: BEVELLED BAT
BLD62003_MAK_STONES AND ROCKS
Types of
Bond
Stretcher Bond
Header Bond
English Bond
Flemish Bond
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Stretcher Bond
TYPES OF BOND : STRETCHER BOND
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Header Bond
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English Bond
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Flemish Bond
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1 2
3 4 5
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6 7
8 9 10
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CEMENT BRICK &
CONCRETE MAKING
TYPES OF MACHINES
BLD62003_MAK_STONES AND ROCKS
• 2 Types
TYPE I : EGG –LAYING TYPE
TYPE II:STATIONARY TYPE
RAW MATERIALS REQUIRED
PRODUCTION PROCESS
Cement
Sand
Gravels
Water
1. Raw Materials Mixing
2. Brick/Block Moulding
3. Vibrating & Compacting
4. Curing/Drying
5. Brick/Block Packing
1. Brick/Block Machine CBM240M/CBM240MA
2. Brick/Block Machine CBM240M/CBM240MA
4. Brick/Block Machine CBM180/CBM180A
3. Brick/Block Machine CBM60
5. Brick/Block Machine CBM300/CBM300A 6. Material hopper
7. Pan Mixer
8. Brick/ block machine CBM40
9. Belt conveyor
10. Auto pallet feeder 11. Gantry cranes 12. Moulds 13. Brick/Block Machine CBM180S/CBM180SA ( Layout ) 14. PLC Controller 15. Brick/Block Machine CBM180/CBM180A ( Layout )
PICTURE NOTATION ( next slides)
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11 12
13 14 15
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End Product : Bricks
END PRODUCT: BRICKS
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End Product : Blocks
END PRODUCT: BLOCKS
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End Product : Pavers
END PRODUCT: PAVERS
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Water absorption
CLAY BRICKS PHYSICAL PROPERTIES
BLD62003_MAK_STONES AND ROCKS
MOISTURE & THERMAL MOVEMENT
THERMAL CONDUCTIVITY
COMPRESSIVE STRENGTH
FIRE RESISTANCE
CLAY BRICKS
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CLAY BRICK SIZE/
DIMENSION
BLD62003_MAK_STONES AND ROCKS
CLAY BRICK SIZE
CLAY BRICK DIMENSION//SIZE
CLAY BRICK SIZE
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Types of clay bricks
Special shape clay bricks
BLD62003_MAK_STONES AND ROCKS
Application bricks
8” clay tile wall 65
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Special shape clay bricks
BLD62003_MAK_STONES AND ROCKS
Special shape clay bricks
8” clay tile wall 66
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BLD62003_MAK_STONES AND ROCKS
Special shape clay bricks Types of clay bricks
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BLD62003_MAK_STONES AND ROCKS
Special shape clay bricks Special shape clay bricks
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BLD62003_MAK_STONES AND ROCKS
Special shape clay bricks Special shape clay bricks
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BLD62003_MAK_STONES AND ROCKS
Special shape clay bricks additional shape clay bricks
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BLD62003_MAK_STONES AND ROCKS
Special shape clay bricks additional shape clay bricks
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
“Gypsum block is a massive lightweight building material composed of solid gypsum, for building and erecting lightweight fire-resistant non-load bearing interior walls, partition walls, cavity walls, skin walls and pillar casing indoors.”
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GYPSUM BLOCKS
USES
APPLICATION
RESISTANCE PROPERTIES
BLD62003_MAK_STONES AND ROCKS
SPECS/ SIZES
• In non load bearing application
• Fire resistance
• Interior location
CONCERN
• 80mm • (656mm x 500mm x 80mm) • 100mm • (656mm x 500mm x 100mm) • 120mm • (656mm x500mm x120mm) • 150mm • (620mm x400mm x 150mm) • (620mm x 500mm x 150mm) • 200mm • (620mm x320mm x200mm) • (620mmx 400mm x 200mm)
• Concern: never use in areas in which moisture exposure could occur
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BLD62003_MAK_STONES AND ROCKS
PROPERTIES
GYPSUM BLOCKS SPECIFICATION
GYPSUM BLOCK
• Lightweight, • used in non-load bearing
applications, • fire-resistant, • interior locations • Concern: never use in
areas in which moisture exposure could occur
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
“Glass Blocks are a versatile building material you can use for windows, stairwells, shower screens, paving, interior and exterior walls” 75
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GLASS BLOCKS
FORMS
APPLICATION
BLD62003_MAK_STONES AND ROCKS
UNIQUENESS
FACES/SURFACE TEXTURE
• Often used for their decorative effect but also: • Provide controlled light
transmission • Good insulation • Condensation
protection • Good sound reduction
• The blocks are formed of 2 cast glass shells that are fused together to form a hollow unit containing a partial vacuum. The vacuum decreases heat transmission and surface condensation.
• Faces can be: • Smooth – provides
vision through the block
• Textured – provide only light transmission
• Opaque – fired with a ceramic finish
• Common sizes are 6”, 8”, 12” sq. by 4 “ thick
• Mortar joints typically ¼ “
MORTAR JOINT
CONCERN
• Concern: glass block expands 1.5 to 2 times more than a brick wall & therefore, must have expansion joints
• Usually laid in a stack bond (can only support their own weight)
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
“stone is a piece of rock quarried and worked into a specific and shape for a particular purpose”
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STONES
GENERAL INFORMATIONS
BLD62003_MAK_STONES AND ROCKS
CLASSIFICATIONS
EXAMPLE
• Igneous – formed by the solidification of molten rock such as volcanic activity (Granite)
• Sedimentary – formed from silt, marine life, and rocks that have been deposited by running water (Limestone, Sandstone, & Travertine)
• Metamorphic – igneous or sedimentary rock that have been changed by pressure, heat, or moisture (Marble, Slate)
• The removal method (quarrying), sizes, shapes (smooth round, angular), thickness, textures, finish, and application & installation vary for each type.
• There are natural stones as well as cultured (man-made) stones used in building materials.
GENERAL INFORMATIONS
• Walls classified in 3 categories (based on shape & surface finish) • Rubble – stones as they are
collected (fieldstone) or as they come from quarry
• Ashlar – constructed of squared stones set in random or uniform courses
• Cut stone (dimension)- fabricated and finished at the mill ready to set in place per the specifications 79
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STONES
BLD62003_MAK_STONES AND ROCKS
STONE & USES
Stone Color Major Use Minor Use
Granite Wide Range Ext. & Int. wall facing Paving, Flooring
Limestone Buff, Gray Exterior wall facing Copings, Sills,
Interior wall facing
Marble Wide Range Ext. & Int. wall
facing, flooring
Countertops
Sandstone Yellow, Brown,
Reds, Tan
Exterior wall facing Paving
Slate Blue, Gray,
Green, Red, Black
Paving, Roof
Shingles
Wall facing
Travertine Tan, Buff, Gray Ext. & Int. wall facing Flooring, Paving
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MASONRY
HISTORY
MORTAR
GROUT
BLD62003_MAK_STONES AND ROCKS
BRICKS
STRUCTURAL CLAY TILES
CONCRETE BLOCK (CMU)
MASONRY PANELS
GYPSUM BLOCK
GLASS BLOCK
STONE
STONE MASONRY
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TYPES OF STONE MASONRY WALLS
COMPOSITE WALL
(I) RUBBLE MASONRY
(II) ASHLAR MASONRY
LAYING OF STONE BLOCK IN A WALL
CAVITY WALLS
• made by laying stone masonry over a prepared bed of mortar, and proceeding in a similar manner to increase the height
(III) COARSED STONE MASONRY
BLD62003_MAK_STONES AND ROCKS
SOLID MASONRY WALLS
• made of an outer wall of large stone slabs, attached to a backing of structural frame or brick/concrete masonry wall
• made by two different types of masonry wall separated by a cavity, which is either insulated or empty and connected together by metal ties
• Composed of unsquared pieces of stones; mason has to choose carefully each stone so that it can fit into the available space
• Made of squared pieces of stones; mason has to carefully lift the heavy stones by a hoist and lower it into place
• has continuous horizontal joints
(IV) UNCOARSED STONE MASONRY
• Does not have defined bedding planes for the wall
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BLD62003 BUILDING MATERIALS BACHELOR OF QUANTITY SURVEYING (HONS.)
BLD62003_MAK_STONES AND ROCKS
Ashlar (squared)
Fieldstone (rubble)
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CHEMICAL
WET/ DRY CYCLE
ABRASIVE
FREEZE/ THAW
MURATIC ACID SOLUTION THERMAL EXPANSION/ CONTRACTION
BLD62003_MAK_STONES AND ROCKS
WATERMIST
SALT CRYSTALLIZATION
• will remove surface deposits; problem is entrapment of moisture
• Chemical – may damage masonry if not suitable for that particular type
MASONRY CLEANING/
RESTORATION
• may etch surface, change color of masonry
• (sandblasting & pressure washing) may damage surface; remove mortar
• causes fractures
• capillary action produces force that is stronger than the masonry
• entire structure expands/contracts with change in temperature
• if on surface of masonry will cause efflorescence; if under surface may lead to crumbling
MASONRY CLEANING (left hand side) MASONRY RESTORATION (right hand side)
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BLD62003_MAK_STONES AND ROCKS
MASONRY UNITS
• Blocks made from concrete, cinders/ other aggregates.
LAYING BLOCKS
• The process of mixing mortar, applying it to masonry block, and placing the block to create wall
MORTAR BED
• A layer of mortar.
CORE
• The hollow space in a masonry block.
• E. Corner Pole:
• A straight piece of wood or metal held plumb by diagonal supports.
• F. Course: A
• row of masonry units.
• Anything constructed of brick, stone, tile, or concrete unit held in place with portland concrete.
• Steel reinforced- concrete beams used
for support over windows and doors.
• Board used to hold mortar.
• Masonry block with two or three holes per block.
Definitions of terms associated with concrete masonry units
CORNER POLE
COURSE
BRICK SET • Wide chisel used for breaking masonry
units.
MASONRY
LINTEL
MORTAR BOARD
HOLLOW CORE BLOCK
CONCRETE SILLS
• Used under windows and doors. • A continuous slab of concrete which
provides a solid, level foundation for block or brick
FOOTINGS
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TUTORIAL QUESTIONS
Describe FIVE (5) differences between brick and block masonry.
(10 marks)
BLD62003_MAK_STONES AND ROCKS 86