The “Building Code Requirements for Structural Concrete” (“Code”) covers the materials, design, and construction of structural concrete used in buildings and where applicable in nonbuilding structures. The Code also covers the strength evaluation of existing concrete structures. Among the subjects covered are: contract documents; inspection; materials; durability requirements; concrete quality, mixing, and placing; formwork; embedded pipes; construction joints; reinforcement details; analysis and design; strength and serviceability; flexural and axial loads; shear and torsion; development and splices of reinforcement; slab systems; walls; footings; precast concrete; composite flexural members; prestressed concrete; shells and folded plate members; strength evaluation of existing structures; provisions for seismic design; structural plain concrete; strut-and-tie modeling in Appendix A; alternative design provisions in Appendix B; alternative load and strength reduction factors in Appendix C; and anchoring to concrete in Appendix D. The quality and testing of materials used in construction are covered by reference to the appropriate ASTM standard specifications. Welding of reinforcement is covered by reference to the appropriate American Welding Society (AWS) standard. Uses of the Code include adoption by reference in general building codes, and earlier editions have been widely used in this manner. The Code is written in a format that allows such reference without change to its language. Therefore, background details or suggestions for carrying out the requirements or intent of the Code portion cannot be included. The Commentary is provided for this purpose. Some of the considerations of the committee in developing the Code portion are discussed within the Commentary, with emphasis given to the explanation of new or revised provisions. Much of the research data referenced in preparing the Code is cited for the user desiring to study individual questions in greater detail. Other documents that provide suggestions for carrying out the requirements of the Code are also cited.

"building code requirements for structural concrete (aci 318-11) and commentary"

Influence of Amount of Recycled Coarse Aggregates and Production Process on Properties of Recycled Aggregate Concrete

Recycled aggregate from C&D waste & its use in concrete – A breakthrough towards sustainability in construction sector: A review

Properties and composition of recycled aggregates from construction and demolition waste suitable for concrete production

Construction and Demolition (C&D) waste constitutes a major portion of total solid waste production in the world, and most of it is used in land fills. Research by concrete engineers has clearly suggested the possibility of appropriately treating and reusing such waste as aggregate in new concrete, especially in lower level applications. This paper discusses different aspects of the problem beginning with a brief review of the international scenario in terms of C&D waste generated, recycled aggregates (RA) produced from C&D waste and their utilization in concrete and governmental initiatives towards recycling of C&D waste. Along with a brief overview of the engineering properties of recycled aggregates, the paper also gives a summary of the effect of use of recycled aggregate on the properties of fresh and hardened concrete. The paper concludes by identifying some of the major barriers in more widespread use of RA in recycled aggregate concrete (RAC), including lack of awareness, lack of government support, non-existence of specifications/codes for reusing these aggregates in new concrete.

Use of aggregates from recycled construction and demolition waste in concrete

Laboratory evaluation of permeability and strength of polymer-modified pervious concrete

A lab investigation into the resistance to freezing and thawing of recycled aggregate concrete (RAC) as compared with that of natural aggregate concrete (NAC) is described. Three different cases were considered for RAC and NAC. Case I consisted of using a medium water-cement ratio (w/c) of 0.47 for both RAC and NAC. Case II was varied from Case I by lowering the w/c from 0.47 to 0.29 (high-performance concrete). Case III consisted of varying the base mixtures by entraining them with an air content of 5%. The durability performance of the RAC in Cases I and II was negatively affected by the recycled aggregates. These results contrast with those found for NAC in which full development of the freeze-thaw durability was reached. With use of entrained air (Case III), however, RAC was found to be as durable as NAC.

Resistance to Freezing and Thawing of Recycled Aggregate Concrete

Recycled asphalt pavement (RAP) is the removed and/or reprocessed pavement material containing asphalt and aggregate. The use of RAP in asphalt pavement has become common practice in the constructi...

Edwin G. Burdette

Papers

Laboratory evaluation of permeability and strength of polymer-modified pervious concrete

Resistance to Freezing and Thawing of Recycled Aggregate Concrete

Mechanical properties of concrete containing recycled asphalt pavements

Performance comparison of laboratory and field produced pervious concrete mixtures

Laboratory evaluation of incorporating waste ceramic materials into Portland cement and asphaltic concrete