Standard Specification for Road Works: Section 9: Concrete (JKR/SPJ/S9-2008)

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D3 JKR SPJ 2008 S9.pdf
Foreword

As practices in road construction change over time, it is imperative for Jabatan Kerja Raya (JKR) (Public Works Department, Malaysia) to continuously update and improve their standard specifications, These new specifications are not only aimed at keeping abreast with current technologies but also to help in improving the quality of constructed product. In unison, these new specifications have a significant positive impact on the construction industry especially with the incorporation of new products and technologies, Standard Specification for Road Works is an essential componenl in the road infrastructure construction industry. This specification provides an improved guidance in the material selection and the production of good quality workmanship and products) based the current best practices. The purpose of this standard specification is to establish uniformity in road works to be used by road designers, road authorities, manufacturers and suppliers of road related products. This document "Section 9: Concrete" is a part of a series of improved specifications in the Standard Specification for Road Works, The compilation of this document was carried out through many discussions by the technical committee members, Additionally it was vetted through by a group of independent consultants and presented at various workshops, Feedbacks and comments received were carefully considered and incorporated in the specification where appropriate.


This Standard Specification For Road Works Section 9: Concrete has been prepared by a technical committee consisting of engineers from Jabatan Kerja Raya. The committee is chaired by Prof. Ir. Dr. Ismail bin Mohamed Taib. The Committee would also like to thank other JKR personnels and individuals who have  contributed towards the successful completion of this specification.


Table of Contents

MATERIALS

  • Cement
  • Certificates of Test
  • Transportation and Storage
  • Aggregates
  • Coarse Aggregates
  • Fine Aggregates
  • Grading
  • Sampling and Testing of Aggregates
  • Storage of Aggregates
  • Water
  • Admixtures
  • Additional Materials


CLASSIFICATION OF CONCRETE MIXES

  • Prescribed Mix
  • Designed Mix
  • Target Mean Strength
  • Suitability of Proposed Mix Proportions
  • Trial Mixes
  • Control Strength of Designed Mixes
  • Requirement for Concrete
  • Workability
  • Concrete Grade
  • Cement Content
  • Total Chloride Content
  • Maximum Sulphalte Content


CONCRETE COMPRESSIVE STRENGTH TESTS AND COMPLIANCE

  • Prescribed Mix
  • Designed Mix
  • Sampling and Testing
  • Rate of Sampling for Testing
  • Cube Strength at 7 Days
  • Cube Strength at 28 Days and Compliance Requirements
  • Prescribed Mix
  • Designed Mix
  • Test for Consistency
  • Action to be taken in the Event of Non Compliance
  • Others Failures
  • Additional Cubes
  • Recording of Test Results
  • Statistical Analysis


PRODUCTION OF CONCRETE

  • Supervision
  • Batching and Mixing
  • Ready Mixed Concrete
  • Transportation
  • Placing
  • Placing of Concrete in Dry Condition
  • Placing of Concrete under Water
  • Placement Temperature
  • Compaction
  • Curing and Protection
  • Normal Curing and Protection
  • Accelerated Curing


CONSTRUCTION WITH CONCRETE

  • Construction Joints
  • Fixing Blocks, Brackets, Built in Bolts, Holes, Chases etc
  • Precast Concrete Construction
  • Manufacturer off Site
  • Storage
  • Handling and Transportation
  • Assembly and Erection
  • Forming Stmctural Connections
  • Protection


STEEL REINFORCEMENT

  • Materials
  • Construction Methods
  • Cutting and Bending of Reinforcement
  • Fixing of Reinforcement
  • Splicing
  • Supporting and Spacer Blocks
  • Welding of Reinforcement


FORMWORK AND SURFACE FINISH FOR STRUCTURE

  • Design and Construction
  • Description
  • Form Lining
  • Projecting Reinforcement, Fixing Devices
  • Surface Finishes for Concrete
  • Control of Colour
  • Formed Surfaces
  • Unformed Surfaces
  • Trial Panels for Exposed Form Finished Surfaces
  • Preparation of Forms before Concreting
  • Removal of Forms
  • Inspection and Making Good


MASS AND LEAN CONCRETE
BUILDING ACCURACY
OTHER REQUIREMENTS FOR CONCRETE WORK

TABLE

  • Testing of Aggregates
  • Grading for Coarse Aggregate
  • Grading for Fine Aggregate
  • Admixture Acceptance Test Requirements
  • Prescribed Mixes for General Use per Cubic Meter of Concrete by Weight Batching
  • Proportions and Strength Requirements for Prescribed
  • Mixes by Volume Batching
  • Minimum Cement Content and Maximum Free Water:
  • Cement Ratio for Designed Mix
  • Maximum Total Chloride
  • Compressive Strength Requirements for Prescribed Mix
  • 28 Days Strength Compliance Requirements for Designed Mix
  • Characteristic Strength of Steel Reinforcement
  • Minimum Periods between Concreting and Removal of Forms


APPENDIX ALL

  • Abutments and Pilecaps
  • Precast Concrete Members
  • Deck Slabs
  • Half-width Construction
  • Drips
  • Openings
  • Shop Drawings
  • Geometry Control
  • Deflection and Camber Data
  • Geometry Control
  • Dimensional Deviations
  • In-situ Concrete
  • Precast Concrete members
  • Control of Accuracy During Construction
  • Dimension control
  • Recording
  • Corrective action
  • Preventive action