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Studying Air Properties In Hardened Portland Cement Concrete With Linear Traverse Method
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Book Synopsis Studying Air Properties in Hardened Portland Cement Concrete with Linear Traverse Method by : Lokman Ng
Download or read book Studying Air Properties in Hardened Portland Cement Concrete with Linear Traverse Method written by Lokman Ng and published by . This book was released on 2010 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air void structure in hardened concrete is critical to its durability. This project mainly focuses on investigating the air void system in hardened concrete with the microscopic analysis Linear Traverse Method specified by ASTM Specification C457-08 (Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete). To understand the stability of the air void system in concrete, the same concrete mixes were examined with two other methods, pressure meter measurement and Air-Void Analyzer, under fresh state. The comparison of the results from the three methods for fresh and hardened concrete shows that properties of concrete vary in samples within the same batch with the same mix design, samples in different batches of the same mix design and samples with different mix designs. The measured air content from Linear Traverse Method and pressure meter are fairly close to each other, while Air-Void Analyzer measured air content is observed to be lower than that from Linear Traverse Method. The measured spacing factor from Air-Void Analyzer is observed to be higher than that from Linear Traverse Method, while the measured specific surface from Air-Void Analyzer is observed to be lower than that from Linear Traverse Method. However, no strong correlation in the measured air content and measured specific surface between Linear Traverse and Air-Void Analyzer is observed.
Book Synopsis Linear Traverse Technique for Measurement of Air in Hardened Concrete by : L. S. Brown
Download or read book Linear Traverse Technique for Measurement of Air in Hardened Concrete written by L. S. Brown and published by . This book was released on 1950 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Significance of Tests and Properties of Concrete and Concrete Aggregates by :
Download or read book Significance of Tests and Properties of Concrete and Concrete Aggregates written by and published by ASTM International. This book was released on 1956 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Significance of Tests and Properties of Concrete and Concrete-Making Materials by :
Download or read book Significance of Tests and Properties of Concrete and Concrete-Making Materials written by and published by ASTM International. This book was released on 1978 with total page 875 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Significance of Tests and Properties of Concrete and Concrete-Making Materials by : C. H. Best
Download or read book Significance of Tests and Properties of Concrete and Concrete-Making Materials written by C. H. Best and published by ASTM International. This book was released on 1985-02 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microscopic Air Void Analysis of Hardened Portland Cement Concrete by the Isolated Shadow Technique by : Basil Mark Harris
Download or read book Microscopic Air Void Analysis of Hardened Portland Cement Concrete by the Isolated Shadow Technique written by Basil Mark Harris and published by . This book was released on 2002 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of the Physical Properties of Hardened Portland Cement Paste by : Treval Clifford Powers
Download or read book Studies of the Physical Properties of Hardened Portland Cement Paste written by Treval Clifford Powers and published by . This book was released on 1948 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Portland Cement Concrete Materials Manual by :
Download or read book Portland Cement Concrete Materials Manual written by and published by . This book was released on 1989 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Hardened Portland Cement Concrete Air Content Using Plastic and Semi-hardened Values by : Albert Dennis Mitchell
Download or read book Investigation of Hardened Portland Cement Concrete Air Content Using Plastic and Semi-hardened Values written by Albert Dennis Mitchell and published by . This book was released on 1991 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Air Content of Hardened Concrete by a High-pressure Method by : Bernard Erlin
Download or read book Air Content of Hardened Concrete by a High-pressure Method written by Bernard Erlin and published by . This book was released on 1962 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Special Report by : National Research Council (U.S.). Highway Research Board
Download or read book Special Report written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1964 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Significance of Tests and Properties of Concrete and Concrete-making Materials by : Joseph F. Lamond
Download or read book Significance of Tests and Properties of Concrete and Concrete-making Materials written by Joseph F. Lamond and published by ASTM International. This book was released on 2006 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Synthetic Air Entraining Agents on Compressive Strength of Portland Cement Concrete by :
Download or read book Effects of Synthetic Air Entraining Agents on Compressive Strength of Portland Cement Concrete written by and published by . This book was released on 2001 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document reports the results of a comprehensive study pertaining to the determination of causes and mechanisms resulting in a reduction of strength in concrete mixtures containing Synthetic air entraining admixtures. The study involved experimentation with concrete mixtures containing both the Synthetic and Vinsol resin admixtures. Tests involved determination of air content for fresh concrete and air bubble characteristics including size and distribution for hardened concrete. Compressive strength of concrete samples were determined at ages 7, 14, 28 and 56 days.
Author :American Society for Testing and Materials. Committee C-9 on Concrete and Concrete Aggregates Publisher : ISBN 13 : Total Pages :402 pages Book Rating :4.3/5 (91 download)
Book Synopsis Significance of Tests and Properties of Concrete and Concrete Aggregates by : American Society for Testing and Materials. Committee C-9 on Concrete and Concrete Aggregates
Download or read book Significance of Tests and Properties of Concrete and Concrete Aggregates written by American Society for Testing and Materials. Committee C-9 on Concrete and Concrete Aggregates and published by . This book was released on 1956 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microscopic Air Void Analysis of Hardened Portland Cement Concrete by the Isolated Shadow Technique by : Basil Mark Harris
Download or read book Microscopic Air Void Analysis of Hardened Portland Cement Concrete by the Isolated Shadow Technique written by Basil Mark Harris and published by . This book was released on 1998 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Petrographic Examination for Hardened Concrete by :
Download or read book Petrographic Examination for Hardened Concrete written by and published by . This book was released on 1955 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Air Void Content Measurements in Fresh Versus Hardened Concretes by : Hamdi Celik Ozyildirim
Download or read book Comparison of Air Void Content Measurements in Fresh Versus Hardened Concretes written by Hamdi Celik Ozyildirim and published by . This book was released on 1990 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study compares the air content of freshly mixed and hardened concretes. At the fresh stage, pressure meters (Types A and B) and a volumetric meter were used to determine the air content. At the hardened stage, the air content was calculated using the linear traverse method described in ASTM C 457, which is a microscopical procedure. The unit weight and compressive strength of the concretes were also determined. The results show that, at the ranges commonly used in the construction of pavements and bridges, the air content of fresh concrete measured by pressure meters and that determined by the microscopical method for essentially the same concrete after hardening are, for practical purposes, the same. The air content obtained by a volumetric meter as normally run in the field is generally lower than that obtained for the same hardened concretes by the microscopical method. The unit weight and compressive strength correlate well with the air content. It was also shown that adding water to concrete can significantly increase the air content, as well as the slump. Thus, a higher air content in hardened concretes than that indicated by initial measurements with a pressure meter is likely to be present if water is added during placement.
