Content
- Chapter 1: How Beautiful Is Your Beauty?
- Chapter 2: Change in Concrete Strength Due to Cement
- Chapter 3: Change in Concrete Strength Depending on Water Content
- Chapter 4: Mixed Water Control
- Chapter 5: Change in Concrete Strength and Air Content Due to Fly Ash
- Chapter 6: Deflection of Concrete Structures Due to Compression
- Chapter 7: Basic Mathematics
- Chapter 8: Deflection due to adhesion in concrete structures
- Chapter 9: Change in concrete performance due to processing
- Chapter 10: Change in Concrete Performance by Testing
- Chapter 11: Internal Testing
- Chapter 12: Using Job Complete Test Results for Quality Improvement
- Chapter 13: Effects of Clarity on Concrete Quality
- Chapter 14: Effects of Concrete Quality on Durability
- Chapter 15: Elements of a Concrete Management System
- Description
- Continue reading
- Dictionary
- Annex
Preface
Most technicians are aware that quality depends on the quality of materials used, workmanship, and dimensions. However, it is difficult to find a book that focuses on quality improvement. Moreover, there is no quality ratio in the real estate sector, which means that profitable investments will not bring profitable returns. To address these issues, several years ago I wrote a series of articles on concrete quality in the National Ready Mixed Concrete Association’s InFocus magazine. The positive reactions I received, mostly from foreigners, on these subjects encouraged me to develop this book.
The first part of this book is about measuring physical quality and the material and spiritual benefits of quality. The following sections discuss variations resulting from equipment, production, and testing and provide techniques to reduce them and therefore improve quality. The basic statistics section should provide all the background information necessary to understand the data required for quality control. Data analysis of the results and corrected tests is important for quality improvement; the test itself has little value. Improving the quality of concrete will be of immense value to the best workers in the industry. By reading this book, they will find exercises or tools that they can immediately apply to their work. This book will be very useful to architects and engineers. As owner-agents, quality is important to them, and this book offers ideas to ensure the best quality. Parts of this book will be of interest to investors and laboratories. Given the immeasurable potential value of high-quality consistency and the need for greater progress in this area, I hope that the book will pique the interest of both researchers and novices. Despite targeting an American audience, the exercises presented in this book are easily comprehensible and universally applicable. The measurements show. This publication would not have been possible without the support of the National Ready Mixed Concrete Association (NRMCA). The laboratory organization’s previous research forms the basis of much of the empirical material. I am grateful to the members of the NRMCA Research and Development Committee, which consists of technical personnel from the testing industry. My interactions with them over the past decade have helped me change my mind. I am especially grateful to Ken Day for the many activities I carried out together with him during the CUSUM process. I also thank my colleague Colin Lobo for reviewing my articles and Nicholas Carino for his assistance with Appendix B. I thank my editor, Taylor & Francis/CRC Press, and ACI and ASTM for permission to use the same figures.
Those familiar with the concrete sector may easily recognize excellent concrete quality methods. Regularly testing aggregate moistures and adjusting batch water, as well as confirming measurement instrument accuracy, are examples of such practices.
another. Many ready-mixed concrete producers strive to improve quality. However, there is always space to improve. Most companies believe they achieve good concrete quality. But how can a corporation know for sure? To assess operational efficiency, companies might use benchmarks like yd3/hour (m3/hour), fleet delivery costs, and safety statistics to compare to industry averages. The National Ready Mixed Concrete Association (NRMCA) has set similar financial benchmarks. Are there any benchmarks for the quality of ready-mixed concrete?
To begin, the organization can monitor its costs associated with poor quality on an annual basis. Some firms may see a paradigm change when they focus solely on the cost of quality programs.
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