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eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2022
ISBN: 978-0-8031-7727-7
... This is an evaluation of the performance of a new nondestructive method for measuring the compressive strength of isolated concrete masonry units (CMUs) and related units using acoustics. The method, called the acoustic impulse response resonance (AIRR) method, involves gently striking the unit...
eBook Chapter
Series: ASTM Manuals
Publisher: ASTM International
Published: 2022
ISBN: 978-0-8031-7134-3
..., including highways, tunnels, and bridges, have long service lives. corrosion steel bridge culvert reinforcement concrete coatings chloride tunnel 345 Chapter 22 | Highways, Tunnels, and Bridges Stephen R. Sharp1 and Jason T. Provines1 Introduction To counter the effects and high maintenance...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2021
ISBN: 978-0-8031-7718-5
... An understanding of the tensile capacity of plain and fiber-reinforced concrete is needed for design. Typical designs use correlations based on the flexural capacity of a prismatic beam. Because of anisotropy, however, determining tensile capacity from correlations is more uncertain in additive...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2021
ISBN: 978-0-8031-7718-5
... Additive construction (AC) is rapidly advancing as a viable method of construction. However, during layer deposition in concrete additive construction (concrete AC), deviations from the design can occur regarding tolerance, precision, and accuracy from layer to layer. This is primarily a result...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2021
ISBN: 978-0-8031-7718-5
... for concrete and masonry construction. To choose the right test methods, one must know the design of the building, the additive manufacturing technique, the material, and the production environment. In the presented case, the house was completely built on the building site. The design of the house used 3D...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2019
ISBN: 978-0-8031-7671-3
... ASTM recently adopted Standard C1797, Specification for Ground Calcium Carbonate and Aggregate Mineral Fillers for Use in Hydraulic Cement Concrete , which outlines the compositional requirements of mineral fillers for use in concrete. Ground calcium carbonate (GCC) currently is used in self...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2019
ISBN: 978-0-8031-7671-3
... For more than a century, the construction industries have utilized petrographic techniques to evaluate the composition, characteristics, and quality of concrete, mortar, and other hydraulic cement-based construction materials. The analysis is performed under ASTM C856-18a, Standard Practice...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2019
ISBN: 978-0-8031-7671-3
... The Damage Rating Index (DRI) was developed in the 1990s as a petrographic examination-based tool to assist in characterizing the amount of damage present in concrete caused by the effects of alkali-silica reaction (ASR), specifically in dams. The DRI provides a readily understood numeric index...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2019
ISBN: 978-0-8031-7671-3
... The Damage Rating Index (DRI) has been in use since the early 1990s to quantify petrographic features of the alkali-silica reaction (ASR) in concrete. To perform a DRI, ASR petrographic features are counted on a cut and polished concrete surface using a stereomicroscope. For this research...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7661-4
... Nuclear power plant life extensions to 60 and potentially 80 years of operation have renewed interest in long-term material degradation. One material being considered is concrete. Swelling of aggregates driven by radiation-induced displacements of atoms is currently considered to be the most...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7661-4
... applications. It typically runs several cycles per year with cycle lengths varying from 40 to 60 days, depending on specific experimental requirements. The highly radioactive used fuel elements that are discharged from the ATR after each cycle are stored in an adjacent heavily shielded canal with concrete...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7645-4
... ASTM C361, Standard Specification for Reinforced Concrete Low-Head Pressure Pipe , was first published in 1955. At that time and for several decades, the U.S. Bureau of Reclamation (USBR) published a similar document (USBR M-1, Standard Specifications for Reinforced Concrete Pressure Pipe...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7645-4
... The current published version of ASTM C361, Standard Specification for Reinforced Concrete Low-Head Pressure Pipe , does not provide guidance for structural design of the concrete pipe joint. With the adoption of ASTM C361 by the U.S. Bureau of Reclamation, some of the information...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7541-9
... The Concrete Pavement Surface Characteristics Program (CPSCP) has recently developed guidelines and practices for reducing tire– pavement noise. The primary means for doing this is via measurements using the on-board sound intensity (OBSI) technique. OBSI measures tire-pavement noise...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7541-9
... The current U.S. Highway Performance Monitoring System (HPMS) requires state highway agencies (SHA) to report to the U.S. Federal Highway Administration (FHWA) a set of pavement-condition data, which includes faulting data on jointed concrete pavements, among other data items. To address...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-7505-1
... The vapor permeability, equilibrium moisture content, hydraulic conductivity, and thermal conductivity of concrete specimens with three different strengths were measured under various conditions of temperature and relative humidity. Based on the measured results, the relationship between...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-3419-5
... Currently there is no standardized test method to determine the interaction of the ingredients of a concrete mixture with a dosage of air-entraining admixtures (AEAs). Typically, to investigate the AEA demand, multiple concrete mixtures are made with varying dosages of AEA, and the resulting air...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-3419-5
... Specifications relating to frost resistance of concrete are generally based on laboratory tests of laboratory-produced concrete. Quality control for laboratory-produced concrete is usually significantly better than what can be achieved in the field, and laboratory freeze-thaw tests generally...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2009
ISBN: 978-0-8031-5522-0
... the distance reached by the current. In the present paper after a short review of existing corrosion rate meters to measure on site, results of a comparison made of reinforced concrete slabs with various degradations such as carbonation or chloride among several using a guard ring with modulated confinement...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2004
ISBN-10: 0-8031-3482-7
ISBN: 978-0-8031-3482-9
... Stringent environmental regulations have forced the concrete finishing market to reduce volatile organic compounds (VOCs). Formulators use water based polymers to reduce these emissions. In this paper, the chemical composition of commercial aqueous acrylic latex concrete seals...