Reinforced brickwork (RBW) combines brick masonry with steel reinforcement to enhance its tensile strength and resistance to tensile and shear stresses, making it a strong structural material. The use of RBW has historical roots dating back to 1813, with applications in various constructions such as beams, columns, and retaining walls, often favored for its cost-effectiveness and low labor requirements compared to reinforced concrete. Proper curing methods and material selection, including high-density cement mortar, are essential to ensure the durability and performance of reinforced brickwork.

1. REINFORCED BRICKWORK
REINFORCED BRICK WORK IS THE ONE IN
WHICH THE BRICK MASONRY IS
STRENGHTENED BY THE PROVISION OF MILD
STEEL BARS, HOOP IRON, EXPANDED MESS.
(RBW)
Group Members :
BINDRESH KR.
SATYA PRAKASH
RAHUL KR.

2. INTRODUCTION
 Reinforced brick masonry (RBM) consists of
brick masonry which incorporates steel
reinforcement embedded in mortar.
 This masonry has greatly increased
resistance to forces that produce tensile and
shear stresses.
 The reinforcement provides additional
tensile strength, allowing better use of brick
masonry's inherent compressive strength.
 The two materials complement each other,
resulting in an excellent structural material.

3. HISTORY
Brick masonry is one of the oldest forms of building
construction, and reinforcement has been used to
strengthen masonry since 1813.

4. SIR MARC ISAMBARD BRUNEL
BORN 25 April , 1769
DIED 12 Dec. 1849
NATIONALITY French
KNOWN FOR Thames Tunnel

5. REINFORCED BRICK WORK USES
• FIRST CLASS
BRICK
CEMENT
MORTAR
•
REINFORCEMEN
T

6. FIRST CLASS BRICK
 well burnt table moulded brick
 uniform in colour
 uniform length and wide
 sharp well defined edges
 Smooth surface without having any :
 Flaws
 Cracks
 Stone grits

7. FIRST CLASS BRICK
PROCESS OF MANUFACTURE
 Preparation of earth
 Moulding
 drying
 Burning

8. CEMENT MORTAR
 This term is used to
indicate a paste prepared
by adding required quantity
of water to a mixture of
 matrix like cement
 adulterant like sand.
 The combined effect of the
two components of mortar
is that the mass is able to
bind the bricks or stones
firmly.
BINDING
MATERIAL
AGGREGATE

9. CEMENT MORTAR
 cement mortar uses in R.B.W. has HIGH DENSITY.
 it holds reinforced at desired position
 cemen:sand ratio :
 1 : 3 (MOST COMMON)
 1 : 4

10. BINDING MATERIAL
 OPC (Ordinary Portland Cement)
 PPC (Portland Pozzuolana Cement)
 SRC (Sulphate Resisting Portland
Cement)
 Low Heat Portland Cement
 Rapid Hardening Portland
Cement

11. REINFORCEMENT
PRINCIPLES OF REINFORCEMENTS
 tension occurs when bending forces act on structural elements
such as
 beam
 cantilevers
 steel is excellent in resisting tension and can be incorporated into
brickwork as reinforcement
 the steel must be located in the masonry where tension is occur-
typically at the bottom of a horizontal beam and at the top of a
horizontal cantilever.

12. WROUGHT IRON FLAT BARS
• Two strips of hoop iron
are used per header brick
•One hoop iron per
stretcher brick
• steel flats may also be
used in place of hoop iron
•Its usual to reinforce
every sixth course

13. STEEL MESS
 steel messes also known as EXMET
 made from rolled steel plates
 Its expanded by machine and is known as
expanded EXMET
 Provided at every third course
 Available in widths of
 65mm,
 176mm and
 230 to 305mm with thickness of
0.6mm,0.8mm and 1mm.
 Supplied in coils of 83m length

14. BRICK ARCHES
SEGMENTAL ARCH :
In college canteen
SEMI CIRCULAR ARCH

15. BRICK SLAB

16. REIFORCED BRICK BEAM

17. VERTICAL REINFORCEMENTS
 Mild steel bars is provided in brick
columns, brick walls and brick
retaining walls
 sometimes, in such circumstances
special bricks, with one or two holes
extending upto the face
 Brick retaining walls are often
reinforced since such a work is
cheaper than R.C.C.

19. EXAMPLE OF VERTICAL
REINFORCEMENT

20. PIERS
ISOLATED PIERS
ATTACHED
PIER
PIER
S

21. COLUMNS

22. NOMINAL COVER TO REINFORCEMENTS
Exposure Minimum nominal SIZE (mm)
Mild 20
Moderate 30
Severe 45
Very Severe 50
Extreme 75

23. WATER
 Clean water to be used
in the preparation of
mortar.
 The pH of water not less
than 6.
 Sea water not to be used
in R.B.W.
Limits in Mixing Water
 Sulphates(as SO3)---
400mg/litre
 Chlorides (as Cl )---500mg/litre

24. CURING OF R.B.W.
 the act of maintaining controlled conditions for freshly
brick work for some definite period following the placing
and finishing operations to assure the proper hydration of
cement and proper hardening of brick work.
 Methods of Curing:
 Retaining formwork
 Shading of brick work
 Covering of surfaces with cotton mats
 Continuous sprinklings of exposed surfaces
 Ponding method
 Membrane curing
 Steam curing
 Electrical method of curing

25.  Retaining
Formwork:
 useful for curing
vertical surfaces of
structural elements
 Useful in cold
countries
 Not sufficient for hot
countries because
formwork can only
preserve the
moisture inside the
brick work, but
cannot prevent
evaporation.

26. SHADING OF R.B.W.
 Essential in dry weather
 objective of shading to prevent the evaporation of water
 Also protects the surface from rain
 Limited application
Covering Surfaces with wet material:
• most widely used
Continuous sprinklings of exposed
surfaces

27.  Ponding method: most efficient method of curing.
suitable for construction of arches, roof slabs, lintel
etc.
 Membrane curing: membrane serves as a physical
barrier to prevent loss of moisture from the brick work
to be cured
 Steam curing: It leads to increase rate of strength
development
 Electrical method of curing: by passing alternate
current of low voltage

28. ADVANTAGE OF R.B.W. OVER R.C.C.
 Additional strength imparted to the masonry
 Low cost housing
 low labor cost
 Reinforced brick beams and lintels allow the designer to achieve
exposed brick on the underside of these element.
 It plays an important role in earthquake more better than R.C.C.
 Brick retaining walls are often reinforced since such a work is cheaper
than R.C.C

29. REASONS FOR DETORIATION
• Lower unit cement content.
• Presence of high chloride content
• Inadequate cement mortar cover to reinforcements
• Ingress of moisture
• Carbonation of mortar in the neighbourhood of steel

30. PREVENTION
 Basic principle of prevention of corrosion is to
maintain passivity of the embedded steel
reinforcement by the high alkalinity.
 By dipping the bars in hot tar
 In case of mess :
the metal in the coil form is coated with oil
and deep in asphaltum paint.

31. EXAMPLES
OF
REINFORCED BRICK
WORK

32. :
:

34. HOUSING IN U.S.
 Single storey building plan
 Less affordable housing plan
 9-10 storey housing plan