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AS 5146.2:2018

[Current]

Reinforced Autoclaved Aerated Concrete, Part 2: Design

This Standard specifies requirements and sets out methods for the determination of the characteristic properties of Reinforced Autoclaved Aerated Concrete members (Reinforced AAC), with a thickness not less than 50 mm, for use in structures where the design and construction conform with AS 5146.1.
Published: 26/11/2018
Pages: 189
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Definitions
1.4 Notation
1.5 Information to be provided in design documents
2 Material and member properties
2.1 General
2.1.1 Determination of properties
2.1.2 Mean properties
2.1.3 Characteristic strengths
2.2 AAC density
2.3 AAC characteristic compressive strength
2.4 AAC characteristic flexural strength
2.5 AAC modulus of elasticity
2.6 AAC creep
2.7 AAC moisture content
2.8 AAC drying shrinkage
2.9 AAC thermal expansion
2.10 AAC freeze-thaw properties
2.11 Steel reinforcement strengths and elongation
2.12 Dimensions of Reinforced AAC members
2.13 Corrosion protection of steel reinforcement
2.14 Strength of welded joints in steel reinforcement
2.15 Characteristic bending capacity of Reinforced AAC members
2.16 Characteristic out-of-plane shear capacity of Reinforced AAC members and joints
2.17 Characteristic in-plane shear capacity of Reinforced AAC members
2.18 Characteristic in-plane shear capacity between layers of Reinforced AAC members
2.19 Characteristic punching shear capacity of Reinforced AAC members
2.20 Characteristic axial load capacity of Reinforced AAC members
2.21 Fire resistance levels (FRLs) of Reinforced AAC members
2.22 AAC thermal conductivity and thermal resistance
2.23 AAC sound attenuation
3 Determination of AAC and reinforcement properties by calculation
3.1 General
3.2 AAC density
3.2.1 General
3.2.2 Declared mean dry density
3.2.3 Declared density class
3.2.4 Density for structural design
3.2.5 Density for determining thermal properties
3.2.6 Density for determining sound attenuation properties
3.2.7 Density for determining transport and construction loads
3.3 AAC characteristic compressive strength
3.3.1 General
3.3.2 Declared characteristic compressive strength
3.3.3 Declared compressive strength class
3.4 AAC characteristic flexural strength and characteristic tensile strength
3.5 AAC modulus of elasticity and Poisson’s ratio
3.5.1 General
3.5.2 Stress-strain relationship
3.5.3 Static elastic modulus
3.5.4 Poisson’s ratio
3.6 AAC creep
3.6.1 General
3.6.2 Creep coefficient
3.6.3 Declared creep class
3.7 AAC drying shrinkage
3.7.1 General
3.7.2 Declared shrinkage coefficient
3.7.3 Declared shrinkage class
3.7.4 Final shrinkage used in design
3.8 AAC thermal expansion
3.9 Steel reinforcement properties
4 Determination of Reinforced AAC member ultimate capacities by calculation
4.1 General
4.1.1 Determination and reporting of capacities
4.1.2 Ductility—Compatibility of structures and Reinforced AAC members
4.1.3 Limited use of non-ductile Reinforced AAC members
4.1.4 Ductile Reinforced AAC members
4.1.5 Effective span
4.1.6 Second order effects and deformations
4.1.7 Strain compatibility in steel reinforcement and surrounding AAC
4.1.8 Bond between steel reinforcement and adjacent AAC to be ignored
4.1.9 Effective diameter of coated transverse reinforcement
4.1.10 Properties of non-structural reinforcement
4.2 Characteristic bending capacity of Reinforced AAC members
4.2.1 General
4.2.2 Stress-strain relationships for Reinforced AAC members
4.2.3 Minimum tensile reinforcement
4.2.4 Characteristic bending strength
4.2.5 Characteristic bending strength without axial compression
4.3 Characteristic out-of-plane shear capacity of Reinforced AAC members
4.3.1 General
4.3.2 Determination of characteristic shear capacity
4.3.3 Extent and anchorage of longitudinal reinforcement
4.3.4 Minimum shear reinforcement in beams
4.3.5 Members not incorporating shear reinforcement
4.3.6 Members incorporating design shear reinforcement
4.3.6.1 Shear resistance
4.3.6.2 Design steel stress in the shear reinforcement
4.3.6.3 Design shear resistance
4.4 Characteristic bearing capacity and punching shear capacity of Reinforced AAC members
4.4.1 General
4.4.2 Loaded area
4.4.3 Critical perimeter
4.4.4 Bearing capacity
4.4.5 Punching shear capacity
4.5 Primary torsion and combined primary torsion and shear
4.5.1 General
4.5.2 Torsional reinforcement
4.6 Characteristic in-plane shear capacity of Reinforced AAC members
4.7 Characteristic shear capacity between layers of Reinforced AAC members
4.8 Characteristic axial load capacity of Reinforced AAC members
4.8.1 General
4.8.2 Method based on the Euler formula
4.8.3 Modified column method
4.8.4 Effect of slenderness
4.8.4.1 Total eccentricity
4.8.4.2 Second order eccentricity
4.8.4.3 Approximate second order eccentricity
4.8.5 Design of critical cross-section for compression and bending
4.8.5.1 General
4.8.5.2 Structurally reinforced cross-section
4.8.5.3 Non-structurally reinforced cross-section
5 Determination of Reinforced AAC serviceability capacities by calculation
5.1 General
5.2 Limitation of stresses under serviceability conditions
5.2.1 Basic considerations
5.2.2 Methods for checking stresses
5.3 Serviceability limit states of cracking—Basic considerations
5.4 Serviceability limit states of deformation
5.4.1 Basic considerations
5.4.2 Checking deflections by calculation
5.4.3 Calculation method
6 Determination of Reinforced AAC fire resistance levels (FRLs) by calculation
6.1 General
6.2 Requirements for the determination of FRLs by calculation
7 Determination of Reinforced AAC thermal properties by calculation
7.1 General
7.2 Declaration of AAC thermal conductivity and thermal resistance
8 Detailing
8.1 General
8.2 Tolerances
8.2.1 Tolerances on dimensions
8.2.2 Tolerances on physical properties
8.3 Detailing reinforcement
8.3.1 General
8.3.2 Concrete cover
8.3.3 Spacing of the bars or wires
8.3.4 Permissible curvature
8.3.5 Anchorage
8.4 Support length
8.5 Chases and holes
8.6 Durability
Appendix A
A1 Scope
A2 General
A3 Abnormal test results
A3.1 General
A3.2 Rejection limits
A3.3 Exclusion
A4 Mean
Appendix B
B1 Scope
B2 Evaluation of characteristic value
B3 Coefficient of variation
Appendix C
C1 Scope
C2 Principle
C3 Apparatus
C4 Sampling and preparation of test specimens
C4.1 Sampling
C4.2 Number of specimens
C4.3 Preparation of test specimens
C4.4 Use of specimens and test results in conjunction with compressive strength tests
C5 Test procedure
C5.1 Determination of dimensions
C5.2 Determination of dry mass
C6 Calculations
C7 Records and report
Appendix D
D1 Scope
D2 Principle
D3 Apparatus
D4 Sampling and preparation of test specimens
D4.1 Sampling
D4.2 Number of specimens
D4.3 Preparation of test specimens
D4.4 Use of specimens in conjunction with dry density tests
D5 Test procedure
D5.1 Determination of dimensions
D5.2 Determination of the moisture content
D5.3 Conditioning specimens
D5.4 Compression testing
D5.5 Determination of final moisture content and dry density
D6 Calculations
D7 Records and report
Appendix E
E1 Scope
E2 Principles
E3 Apparatus
E4 Sampling and preparation of test specimens
E4.1 Sampling
E4.2 Number of specimens
E4.3 Preparation of test specimens
E4.4 Use of specimens in conjunction with dry density tests
E5 Test procedure
E5.1 Determination of dimensions
E5.2 Determination of the density and moisture content
E5.3 Conditioning specimens
E5.4 Flexural testing
E5.5 Determination of final moisture content and dry density
E6 Calculations
E7 Records and report
Appendix F
F1 Scope
F2 Principle
F3 Apparatus
F4 Sampling and preparation of test specimens
F4.1 Sampling
F4.2 Number of specimens
F4.3 Preparation of test specimens
F5 Test procedure
F5.1 Determination of dimensions
F5.2 Determination of the moisture content
F5.3 Conditioning specimens
F5.4 Establishing gauge points and gauge length
F5.5 Testing
F6 Calculations
F7 Records and report
Appendix G
G1 Scope
G2 Principle
G3 Apparatus
G4 Sampling and preparation of test specimens
G4.1 Sampling
G4.2 Number of specimens
G4.3 Preparation of test specimens
G5 Test procedure
G5.1 Determination of dimensions
G5.2 Determination of the moisture content
G5.3 Conditioning specimens
G5.4 Establishing gauge points and gauge length
G5.5 Testing
G6 Calculations
G7 Records and record
Appendix H
H1 Scope
H2 Principle
H3 Apparatus
H4 Sampling and preparation of test specimens
H4.1 Sampling
H4.2 Number of specimens
H4.3 Preparation of test specimens
H4.4 Use of test results in conjunction with density tests
H5 Test procedure
H5.1 Determination of dimensions
H5.2 Determination of the ambient mass and dry mass
H6 Calculations
H7 Records and report
Appendix I
I1 Scope
I2 Principle
I3 Apparatus
I4 Sampling and preparation of test specimens
I4.1 Sampling
I4.2 Number of specimens
I4.3 Preparation of specimens
I5 Test procedure
I5.1 Mass of gauge plugs
I5.2 Determination of dimensions
I5.3 Conditioning of specimens
I5.4 Drying shrinkage and mass
I5.5 Oven-dry mass at 105 ±5°C
I6 Calculations
I7 Records and report
Appendix J
J1 Scope
J2 Principle
J3 Apparatus
J4 Sampling and preparation of test specimens
J4.1 Sampling
J4.2 Number of specimens
J4.3 Preparation of specimens
J5 Test procedure
J5.1 Determination of dimensions of all specimens
J5.2 Conditioning of specimens
J5.3 Dry density and compressive strength of freeze-thaw samples
J5.4 Moisture content, dry density and compressive strength of reference samples
J6 Calculations
J7 Records and report
Appendix K
K1 Scope
K2 Principle
K3 Apparatus
K4 Sampling and preparation of test specimens
K4.1 Sampling
K4.2 Preparation of test specimens
K5 Test procedure
K5.1 Number and position of measurements
K5.2 Additional thickness measurements
K5.3 Position pieces
K5.4 Profiled sections
K5.5 Hollow cores
K5.6 Multi-layer members
K5.7 Squareness
K6 Calculations
K7 Records and report
Appendix L
L1 Scope
L2 Principle
L3 Apparatus
L4 Sampling and preparation of test specimens
L4.1 Sampling
L4.2 Number of specimens
L4.3 Preparation of specimens
L4.4 Sealing the end faces
L5 Test procedure
L5.1 Commencing the test
L5.2 Sodium chloride test of ‘corrosion sample’
L5.3 Reference sample
L6 Calculations
L7 Records and report
Appendix M
M1 Scope
M2 Principle
M3 Apparatus
M4 Sampling and preparation of test specimens
M4.1 Sampling
M4.2 Preparation of specimens
M5 Test procedure
M6 Calculations
M7 Records and report
Appendix N
N1 Scope
N2 Principle
N3 Apparatus
N4 Sampling and preparation of test specimens
N4.1 Sampling
N4.2 Number of specimens
N5 Test procedure
N6 Calculations
N7 Records and report
Appendix O
O1 Scope
O2 Principle
O3 Apparatus
O4 Sampling and preparation of test specimens
O4.1 Sampling
O4.2 Number of specimens
O4.3 Conditioning
O4.4 Initial measurement
O4.5 Attaching strain gauges
O5 Test procedure
O6 Calculations
O7 Records and report
Appendix P
P1 Scope
P2 Principle
P3 Apparatus
P4 Sampling and preparation of test specimens
P4.1 Sampling
P4.2 Number of specimens
P4.3 Preparation of specimens
P4.4 Direction of rise
P4.5 Conditioning
P5 Test procedure
P5.1 Determination of mass of the loading frame
P5.2 Determination of mass of the specimens
P5.3 Determination of specimen dimensions
P5.4 Determination of camber
P5.5 Determination of serviceability deflection
P5.6 Testing
P5.7 Storage of specimens for further testing
P5.8 Determination of reinforcement dimensions, position and corrosion protection
P5.9 Determination of the dry density, compressive strength and moisture content
P6 Calculations
P7 Records and report
Appendix Q
Q1 Scope
Q2 Principle
Q3 Apparatus
Q4 Sampling and preparation of test specimens
Q4.1 Sampling
Q4.2 Number of specimens
Q4.3 Direction of rise
Q4.4 Conditioning
Q5 Test procedure
Q5.1 Determination of mass of the loading frame
Q5.2 Determination of mass of the specimens
Q5.3 Determination of specimen dimensions
Q5.4 Testing
Q5.5 Storage of specimens for further testing
Q5.6 Determination of the dry density, compressive strength and moisture content
Q6 Calculations
Q7 Records and report
Appendix R
R1 Scope
R2 Principle
R3 Apparatus
R4 Sampling and preparation of test specimens
R4.1 Sampling
R4.2 Number and assembly of specimens
R4.3 Direction of rise
R4.4 Conditioning
R5 Test procedure
R5.1 Determination of mass of the loading frame
R5.2 Determination of mass of the specimens
R5.3 Determination of specimen dimensions
R5.4 Testing
R5.5 Storage of specimens for further testing
R5.6 Determination of the dry density, compressive strength and moisture content
R6 Calculations
R7 Records and report
Appendix S
S1 Scope
S2 Principle
S3 Apparatus
S4 Sampling and preparation of test specimens
S4.1 Sampling
S4.2 Number of specimens
S4.3 Direction of rise
S4.4 Conditioning
S5 Test procedure
S5.1 Determination of specimen dimensions
S5.2 Testing
S5.3 Storage of specimens for further testing
S5.4 Determination of the dry density, compressive strength and moisture content
S6 Calculations
S7 Records and report
Appendix T
T1 Scope
T2 Principle
T3 Apparatus
T4 Sampling and preparation of test specimens
T4.1 Sampling
T4.2 Number of specimens
T4.3 Direction of rise
T4.4 Conditioning
T5 Test procedure
T5.1 Determination of specimen dimensions
T5.2 Testing
T5.3 Storage of specimens for further testing
T5.4 Determination of the dry density, compressive strength and moisture content
T6 Calculations
T7 Records and report
Appendix U
U1 Scope
U2 Principle
U3 General
U4 Apparatus
U5 Sampling and preparation of test specimens
U5.1 Sampling
U5.2 Number of specimens
U5.3 Preparation of specimens
U5.4 Direction of rise
U5.5 Conditioning
U6 Test procedure
U6.1 Determination of mass of the loading frame
U6.2 Determination of mass of the specimens
U6.3 Determination of specimen dimensions
U6.4 Determination of camber
U6.5 Testing
U6.6 Storage of specimens for further testing
U6.7 Determination of reinforcement dimensions, position and corrosion protection
U6.8 Determination of the dry density, compressive strength and moisture content
U7 Calculations
U8 Records and report
Appendix V
V1 Scope
V2 Definitions
V3 Notation
V4 Units
V5 Requirements and basic principles
V5.1 Requirements
V5.2 Design values of material properties
V5.3 Assessment methods
V5.3.1 General
V5.3.2 Member analysis
V5.3.3 Analysis of parts of the structure
V5.3.4 Global structural analysis
V6 Material properties
V6.1 General
V6.2 AAC
V6.3 Steel
V7 Structural fire design methods
V7.1 General
V7.2 Tabulated data
V7.2.1 General
V7.2.2 General design rules
V7.2.3 Walls
V7.2.3.1 Non-loadbearing walls (partitions)
V7.2.3.2 Loadbearing walls
V7.2.4 Beams
V7.2.5 Floor and roof components
V7.3 Simplified design methods
V7.3.1 Calculation methods for FRL R
V7.3.1.1 General
V7.3.1.2 Temperature profiles
V7.3.1.3 Zone method with or without taking deformations into account
V7.3.1.4 Simplified zone method without taking deformations into account
V7.3.2 Verification of FRL E
V7.3.3 Verification of FRL I
V7.4 Anchorage
V8 Protective layers
Appendix W
Appendix X
X1 Floor and roof components with dry joints
X2 Floor and roof components with mortar joints
X3 Vertical and horizontal wall components with dry joints
X4 Vertical and horizontal wall components with mortar joints
Appendix Y
Y1 Basis of temperature profiles
Y2 Temperature profiles for AAC wall, floor and roof components
Y3 Temperature profiles for AAC beams
Y4 Calculation assumptions
Appendix Z
Appendix AA
AA1 Scope
AA2 Statistical sampling
AA3 Product certification
AA4 Supplier’s quality management system
AA5 Other means of assessment
Bibliography
Cited references in this standard
[Current]
Tolerances for building — Methods of measurement of buildings and building products — Part 1: Methods and instruments
EN 1740
Performance test for prefabricated components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure under predominantly longitudinal load (vertical components)
[Current]
Methods for fire tests on building materials, components and structures, Part 4: Fire-resistance tests for elements of construction
[Current]
Calibration and classification of force-measuring systems
[Withdrawn]
Acoustics — Methods for the measurement of road traffic noise
Content history
[Superseded]
DR AS 5146.2:2017