Download or read book Field Practices in Concrete Pumping written by William O'Donnell and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concrete Pumping and Spraying written by T. H. Cooke and published by Thomas Telford. This book was released on 1990 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Concrete pumping plant and equipment - Capabilities of concrete pumps and special applications - Cost comparisons - pumping and other methods of placement - Pumpable concrete - Concrete pumping operations on site - Common problems and corrective measures - Hints for the man on site - Safety and training - Screed pumping - Sprayed concrete - Concrete pumping - the future.
Download or read book Best Practices for Concrete Pumping written by Kyle Riding and published by . This book was released on 2016 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pumping is one of the major placement techniques used in the concrete industry to deliver concrete from the mixing truck to the formwork. Although concrete pumping has been used to place concrete since the 1960s, there is still a lack of exact knowledge supported by research evidence as to what affects concrete pumpability and how pumping changes concrete properties. A three-phase research study was carried out to (1) investigate performance of pumped concrete in field conditions, (2) identify concrete properties affecting pumpability, and (3) assess the effects of pumping on the concrete air void system. In the first phase of the research program, six Kansas Department of Transportation (KDOT) project sites were visited during the summer of 2015, and concrete was sampled before and after pumping. In addition to measuring fresh concrete properties as well as performing hardened air void analysis of all sampled mixtures, rheological and tribological tests were performed on sampled concrete. The second phase of the study consisted of a full-scale controlled pumping experiment. During the experiment, three different concrete mixtures were pumped, and both fresh and hardened properties of the concrete were determined. Additionally, the pumping system was equipped with strain gauges to measure pumping pressures. Finally, the third phase of the study consisted of measuring the rheological and tribological properties of 35 concrete mixtures in order to determine the effect of various concrete components on pumpability.
Download or read book ACI Manual of Concrete Practice written by American Concrete Institute and published by . This book was released on 2002 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Materials and Techniques for Reinforced Concrete Structures written by Mohamed Abdallah El-Reedy Ph.D and published by CRC Press. This book was released on 2009-06-26 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: From China to Kuala Lumpur to Dubai to downtown New York, amazing buildings and unusual structures create attention with the uniqueness of their design. While attractive to developers and investors, the safe and economic design and construction of reinforced concrete buildings can sometimes be problematic. Advanced Materials and Techniques for Rein
Download or read book The Manual of Pumped Concrete Practice written by British Concrete Pumping Association and published by . This book was released on 1977* with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Specifications for Structural Concrete ACI 301 05 with Selected ACI References written by American Concrete Institute and published by American Concrete Institute. This book was released on 2005 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concrete and Steel Construction written by Mohamed A. El-Reedy and published by CRC Press. This book was released on 2013-12-16 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting with the receipt of materials and continuing all the way through to the final completion of the construction phase, Concrete and Steel Construction: Quality Control and Assurance examines all the quality control and assurance methods involving reinforced concrete and steel structures. This book explores the proper ways to achieve high-quality construction projects, and also provides a strong theoretical and practical background. It introduces information on quality techniques and quality management, and covers the principles of quality control. The book presents all of the quality control and assurance protocols and non-destructive test methods necessary for concrete and steel construction projects, including steel materials, welding and mixing, and testing. It covers welding terminology and procedures, and discusses welding standards and procedures during the fabrication process, as well as the welding codes. It also considers the total quality management system based on ISO 9001, and utilizes numerous international and industry building standards and codes. Covers AISC, ACI, BS, and AWS codes Examines methods for concrete quality control in hot and cold weather applications, as well as material properties Illustrates methods for non-destructive testing of concrete and for steel welding—radiographic, ultrasonic, and penetration and other methods. Addresses ISO 9001 standards—designed to provide organizations better quality control systems Includes a checklist to be considered as a QA template Developed as a handbook for industry professionals, this book also serves as a resource for anyone who is working in construction and on non-destructive inspection testing for concrete and steel structures.
Download or read book Code of Practice for the Safe Use of Concrete Pumps written by British Standards Institute Staff and published by . This book was released on 2007-04-30 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concretes, Pumps, Concrete spreaders, Construction equipment, Construction operations, Occupational safety, Safety measures, Construction workers, Training, Inspection, Certification (approval)
Download or read book Concrete Construction written by and published by . This book was released on 19?? with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Placing Concrete by Pumping Methods written by American Concrete Institute and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pumping of Concrete Mixtures written by Jan Vosahlik and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pumping is the most utilized placement technique to deliver fresh concrete from the concrete mixer to the formwork on construction site. Compared to other available placement methods, such as bucket-and-crane or conveyor belts, pumping offers superior placement rates while reducing the required labor cost. Despite the fact that concrete pumping has been utilized on job sites around the world since the early 1960s, there is still a lack of knowledge, supported by research evidence, as to what affects concrete pumpability and how pumping changes concrete properties both in the plastic and hardened state. A four-phase research study was carried out to: (1) improve the existing methodology of rheological characterization of the lubrication layer formed during pumping, (2) evaluate the effect of concrete mixture constituents and proportioning on rheological properties of concrete and the lubrication layer, (3) asses the effect of pumping and pumping pressure on concrete fresh properties and the air void system under controlled conditions, and (4) to evaluate the effect of pumping on concrete fresh properties and the air void system in the field conditions. In the first phase of this research program, a correction procedure was developed evaluating 3D flow at the bottom of the cylindrical concrete interface rheometer. Results showed that the correction procedure can be successfully used for characterization of lubrication layer properties, and that the bottom of the cylinder can cause measurement error of up to 10% depending on concrete rheological properties and the interface rheometer geometry. The second phase of this research program consisted of a laboratory study to evaluate rheological properties and properties of the lubrication layer of large variety of concrete mixtures. Considered mixture proportion variables included air void content, water-to-cement ratio, paste volume, fly ash replacement ratio, fine-to-coarse aggregate ratio, aggregate shape, use of viscosity-modifying admixture, and use of nano-clay particles. Results indicated that the changes in rheological properties of the lubrication due to mixture proportioning adjustments corresponded in most cases to changes of the bulk concrete rheological properties. In the third phase of the study, a full-scale controlled pumping experiment was conducted. During the experiment, three different concrete mixtures were pumped and both fresh and hardened properties of concrete were determined. Additionally, the pumping circuit was equipped with a system to monitor pumping pressures. The obtained results revealed that concrete pumping can significantly modify concrete fresh properties. Additionally, it was shown that changes in the fresh properties as well as in the concrete air void system are independent of applied concrete pressure. Finally, the forth phase of this research program consisted of field evaluation of concrete pumping. Six concrete bridge project sites were visited and concrete samples were collected before and after pumping. Analysis results indicated that the changes in concrete properties appear to be influenced not only by mixture characteristics but also by discharge conditions in the formwork.
Download or read book Surface Machinery and Methods for Oil well Pumping written by Harold Coulter George and published by . This book was released on 1925 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Methods in Concrete Construction written by International Correspondence Schools and published by . This book was released on 1934 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Methods in Concrete Construction written by Archibald De Groot and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Methods in Concrete Construction written by International Correspondence Schools and published by . This book was released on 1924 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Information in the Construction Industry written by and published by . This book was released on 1973 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
