Ebook Particulars :
Language English
Pages 210
Format PDF
Dimension 16.4 MB


Improving Concrete Quality by Karthikeyan H. Obla



Most concrete technologists are conscious that concrete high quality relies on the standard of the supplies used, manufacturing, and testing. Nonetheless, it’s laborious to discover a guide that’s targeted with regards to bettering concrete high quality. As well as, high quality measurement just isn’t prevalent within the concrete trade, and, because of this, high quality funding just isn’t seen as producing a constructive return. Over the previous couple of years I’ve written a collection of articles on concrete high quality within the Nationwide Prepared Blended Concrete Affiliation’s Concrete InFocus journal to deal with these points.

The constructive feedback that I acquired for these articles, many from strangers, inspired me to develop this guide. The primary chapter of this guide discusses concrete high quality measurement in addition to the tangible and intangible advantages resulting from improved high quality. Subsequent chapters focus on concrete variability resulting from materials, manufacturing, and testing and counsel methods to scale back them and thereby enhance concrete high quality. The chapter on fundamental statistics ought to present all of the background wanted to know the information evaluation required for high quality monitoring. Knowledge evaluation of take a look at outcomes and subsequent corrective motion are important for bettering high quality; doing a take a look at by itself is of little worth.

Although this guide was written with a U.S. viewers in thoughts, the practices advised may be simply understood and are universally relevant. Metric items are supplied. This guide wouldn’t have been potential with out the help supplied by the Nationwide Prepared Blended Concrete Affiliation (NRMCA). A lot of the reference materials is predicated on previous analysis carried out on the affiliation’s analysis laboratory. I thank the members of the NRMCA’s Analysis Engineering and Requirements Committee, which consists of technical personnel from the concrete trade. My interactions with them over the previous 10 years have helped form my views. I thank Ken Day for the a number of interactions I’ve had with him, notably on the CUSUM method. I additionally thank my colleague Colin Lobo for reviewing my articles, and I thank Nicholas Carino for his help with Appendix B. I thank ACI and ASTM for permitting the usage of among the figures and my writer Taylor & Francis/CRC Press.Improving Concrete Quality might be of great worth to the standard personnel within the concrete trade. By studying this guide, they’ll come away with practices or instruments that may be instantly employed of their operation. This guide might be of considerable profit to architects and engineers as effectively. As homeowners’ representatives, high quality is essential for them, and this guide gives strategies for guaranteeing good concrete high quality. Sections of this guide will curiosity contractors and testing laboratories as effectively. I hope the guide creates an curiosity amongst researchers and innovators as a result of the potential worth of constant high-quality concrete can’t be understated, and main strides nonetheless should be made on this space.

Karthik Obla, PhD, PE, FACI,
is vice chairman, Technical Providers, Nationwide Prepared Blended Concrete Affiliation (NRMCA). He has over 20 years of expertise in concrete supplies expertise and has pursuits in high quality management/assurance, combination optimization, specs, use of recycled supplies, sturdiness, and new expertise. He’s a fellow of the American Concrete Institute and a winner of ACI’s Younger Skilled Achievement Award. Dr.  Obla is an lively member of varied ACI, ASTM, and TRB technical committees and served as chair for ASTM C09.49—Pervious Concrete and is the present chair of ACI 232—Fly Ash and Pure Pozzolans.The Author

He served as a member of ACI’s Concrete Analysis Council. He has revealed over 75 technical articles in journals and has introduced in a number of worldwide conferences. Dr. Obla earned a PhD in civil engineering from the College of Michigan, Ann Arbor, and is a licensed skilled engineer within the state of Maryland. He served as vice-president and president for the ACI San Antonio Chapter. Previous to becoming a member of NRMCA he was technical supervisor at Boral Materials Applied sciences.

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