The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.

American Society for Testing and Materials

*Co-chairs of the subcommittee that prepared this document. Note: The committee acknowledges the contribution of associate member Paul Kelley. ACI encourages the development and appropriate use of new and emerging technologies through the publication of the Emerging Technology Series. This series presents information and recommendations based on available test data, technical reports, limited experience with field applications, and the opinions of committee members. The presented information and recommendations, and their basis, may be less fully developed and tested than those for more mature technologies. This report identifies areas in which information is believed to be less fully developed, and describes research needs. The professional using this document should understand the limitations of this document and exercise judgment as to the appropriate application of this emerging technology.

/pdf/guide-for-the-design-and-construction-of-externally-bonded-3wakai247t.pdf

Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures

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"

A review on the utilization of fly ash

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Properties Of Concrete

The development of techniques capable of evaluating deterioration of reinforced concrete (RC) is instrumental to the advancement of the structural health monitoring (SHM) and service life estimate for constructed facilities. One of the main causes leading to degradation of RC is the corrosion of the steel reinforcement. This process can be modeled phenomenologically, while labora tory tests aimed at studying durability respon ses are typically accelerated in order to provide useful results within a realistic period of time. Among nondestructive methods, acoustic emission (AE) is emerging as a tool to detect the onset and progression of deterioration mechanisms. In this paper, the development of accelerated corrosion and continuous AE monitoring test set-up for RC specimens are presented. Relevant information are provided with regard to the characteristics of the corrosion circuit, continuous measurement and acquisition of corrosion potential, selection of AE sensors and AE parameter setting. Results from small-scale pre-notched RC specimens aim to isolate the frequency sp ectrum where the corrosion first takes pl ace. Waveform analysis critical in the definition of a prognosis model will extend th e AE dataset for the onset of corrosion. Key words : acoustic emission, corrosion, reinforced concrete , accelerated test, steel re inforcement, service life 1.

Acoustic Emission Characterization of the Onset of Corrosion in Reinforced Concrete

/pdf/structural-response-of-frp-reinforced-concrete-softeyes-for-46103s0qyd.pdf

Structural Response of FRP Reinforced Concrete Softeyes for Tunnel Excavation

A field data acquisition system capable of acquiring measurements of interest in a load test was acquired as part of a previous research equipment project. The current project validated and calibrated this equipment by conducting an in-situ load test. The calibration of the equipment was conducted in a laboratory environment, followed by a field validation. The structure chosen for the validation was the structural floor of the speed ramp in a parking garage in Buffalo, New York. The aim of the load was to assess the structural performance of a typical cantilever portion of the floor system. Such validation will ensure that the in-house built data acquisition system is capable of performing as planned during the test and therefore guarantee the safety of a load test.

Validation and Calibration of Testing Equipment for In-Situ Load Tests

Long-Term Field Monitoring of Slabs on Ground

Historic Infrastructure Rehabilitation with Fabric Reinforced Cementitious Matrix (FRCM) Composites is part of the 2016 Annual Proceedings of The Association for the Study of the Cuban Economy.

Antonio Nanni

Papers

Acoustic Emission Characterization of the Onset of Corrosion in Reinforced Concrete

Structural Response of FRP Reinforced Concrete Softeyes for Tunnel Excavation

Validation and Calibration of Testing Equipment for In-Situ Load Tests

Long-Term Field Monitoring of Slabs on Ground

Historic Infrastructure Rehabilitation with Fabric Reinforced Cementitious Matrix (FRCM) Composites