Early Age Strength Assessment of Concrete on Site
| Author | : |
| Publisher | : |
| Total Pages | : 4 |
| Release | : 2000 |
| Genre | : Reinforced concrete construction |
| ISBN | : 9780721015545 |
Early Age Strength Assessment Of Concrete On Site
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Properties of Concrete at Early Ages
| Author | : J. Francis Young |
| Publisher | : |
| Total Pages | : 218 |
| Release | : 1986 |
| Genre | : Technology & Engineering |
| ISBN | : |
Early-age Strength Assessment of Cement-treated Materials
| Author | : Tyler Blaine Young |
| Publisher | : |
| Total Pages | : 78 |
| Release | : 2007 |
| Genre | : Electronic dissertations |
| ISBN | : |
In order to avoid the occurrence of early-age damage, cement-treated base (CTB) materials must be allowed to cure for a period of time before the pavement can be opened to traffic. The purpose of this research was to evaluate the utility of the soil stiffness gauge (SSG), heavy Clegg impact soil tester (CIST), portable falling-weight deflectometer (PFWD), dynamic cone penetrometer, and falling-weight deflectometer for assessing early-age strength gain of cement-stabilized materials. Experimentation was performed at four sites on a pavement reconstruction project along Interstate 84 near Morgan, Utah, and three sites along Highway 91 near Richmond, Utah; cement stabilization was used to construct CTB layers at both locations. Each site was stationed to facilitate repeated measurements at the same locations with different devices and at different curing times.
Early Assessment of Concrete Quality by Accelerating Compressive Strength Development with Heat (Results of ASTM's Cooperative Test Program)
| Author | : MH. Wills |
| Publisher | : |
| Total Pages | : 12 |
| Release | : 1975 |
| Genre | : Accelerating (chemistry) |
| ISBN | : |
Rapid concrete construction practices have led to increasing pressure to assess the quality of concrete at a very early age.Therefore, a cooperative test program was conducted among nine laboratories to evaluate several existing test procedures involving the use of either hot water, boiling water, or the heat of hydration of portland cement to provide heat necessary to accelerate the compressive strength development of concrete.Depending upon which procedure was employed, the amount of acceleration ranged from 1.1 to 2.5 times the strength developed after the same period of moist curing.Statistical analyses of the data justified adoption of a standard method that can be used to judge the quality of concrete soon after mixing.This method involves three procedures of accelerated curing which are limited to concrete made with the same materials and tested by the same laboratory.It has been designated ASTM C 684-74 (Making, Accelerated Curing, and Testing of Concrete Compression Test Specimens) Use of it, under the conditions stated therein, results in as reliable an evaluation of the quality of the concrete at one or two days of age as compared to that measured at 28 days of age according to ASTM C 31-69 (Making and Curing Concrete Test Specimens in the Field).
Early Age Strength Assessment of Cement-treated Basematerials
| Author | : Tyler Blaine Young |
| Publisher | : |
| Total Pages | : 78 |
| Release | : 2007 |
| Genre | : Pavements |
| ISBN | : |
In order to avoid the occurrence of early-age damage, cement-treated base (CTB) materials must be allowed to cure for a period of time before the pavement can be opened to traffic. The purpose of this research was to evaluate the utility of the soil stiffness gauge (SSG), heavy Clegg impact soil tester (CIST), portable falling-weight deflectometer (PFWD), dynamic cone penetrometer, and falling-weight deflectometer for assessing early-age strength gain of cement-stabilized materials. Experimentation was performed at four sites on a pavement reconstruction project along Interstate 84 near Morgan, Utah, and three sites along Highway 91 near Richmond, Utah; cement stabilization was used to construct CTB layers at both locations. Each site was stationed to facilitate repeated measurements at the same locations with different devices and at different curing times.
Concrete Strength During Construction
| Author | : Hai Sang Lew |
| Publisher | : |
| Total Pages | : 60 |
| Release | : 1976 |
| Genre | : Concrete construction |
| ISBN | : |
Testing of Concrete in Structures
| Author | : John H. Bungey |
| Publisher | : CRC Press |
| Total Pages | : 353 |
| Release | : 2006-09-27 |
| Genre | : Technology & Engineering |
| ISBN | : 0203965140 |
Providing a comprehensive overview of the techniques involved in testing concrete in structures, Testing of Concrete in Structures discusses both established techniques and new methods, showing potential for future development, and documenting them with illustrative examples. Topics have been expanded where significant advances have taken place in the field, for example integrity assessment, sub-surface radar, corrosion assessment and localized dynamic response tests. This fourth edition also covers the new trends in equipment and procedures, such as the continuation of general moves to automate test methods and developments in digital technology and the growing importance of performance monitoring, and includes new and updated references to standards. The non-specialist civil engineer involved in assessment, repair or maintenance of concrete structures will find this a thorough update.
Recent Trends in Civil Engineering
| Author | : K. K. Pathak |
| Publisher | : Springer Nature |
| Total Pages | : 1081 |
| Release | : 2020-09-27 |
| Genre | : Technology & Engineering |
| ISBN | : 9811551952 |
This book presents the selected peer-reviewed proceedings of the International Conference on Recent Trends and Innovations in Civil Engineering (ICRTICE 2019). The volume focuses on latest research and advances in the field of civil engineering and materials science such as design and development of new environmental materials, performance testing and verification of smart materials, performance analysis and simulation of steel structures, design and performance optimization of concrete structures, and building materials analysis. The book also covers studies in geotechnical engineering, hydraulic engineering, road and bridge engineering, building services design, engineering management, water resource engineering and renewable energy. The contents of this book will be useful for students, researchers and professionals working in civil engineering.
Early Age Strength of Concrete
| Author | : Theodore Telisak |
| Publisher | : |
| Total Pages | : 726 |
| Release | : 1991 |
| Genre | : Concrete |
| ISBN | : |
The concrete tests currently in widespread use were developed decades ago, and although there have been continual updates and refinements, there are inherent limitations which cannot be overlooked. Most important, current test methods are often rendered unrepresentative of the concrete in the field, especially at early ages or under different curing conditions. The study described herein was conducted to evaluate the applicability and effectiveness of several nondestructive test methods for assessing concrete strength in the field. The test methods used in this study included compressive cylinders, flexural beams, penetration resistance, rebound hammer, pullout, maturity, ultrasonic pulse velocity, and drilled cores. Test results from the different methods being evaluated were compared at concrete ages ranging from 1 to 28 days. Each test method was also evaluated for within-test variability among sets of companion specimens. Three different concrete mix designs were used, including cement plus fly ash contents ranging from 300 to 500 pounds per cubic yard, three maximum sizes of river gravels, and one maximum-size crushed limestone coarse aggregates.
