Download or read book Mechanical Properties of Concrete at Early Ages microform written by Jianwei Zhao and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1990 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Properties of Concrete at Early Ages written by Jianwei Zhao and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis examines the early age behaviors of concrete tensile strength, modulus of elasticity, concrete shrinkage and creep, and develops prediction equations which are demonstrated to be more appropriate than the current code equations.

Download or read book Properties of Concrete at Early Ages written by J. Francis Young and published by . This book was released on 1986 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Properties of Mass Concrete at Early Ages written by Donald Mark Smith and published by . This book was released on 1990 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strength and Properties of Concrete at Early Ages written by and published by . This book was released on 1949 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transition from Fluid to Solid written by and published by American Concrete Institute. This book was released on 2009 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: This publication contains the twelve papers presented at a full-day technical session sponsored by the American Concrete Insitute. The subject matter of these papers includes: (1) the development of concrete properties and microstructure at early ages, (2) test methods for assessing early-age volume change and cracking potential, (3) construction operations timing, (4) computer simulations of early-age behavior, and (5) mechanisms that end the concrete dormant period.

Download or read book Properties of Concrete at Early Ages written by NJ. Carino and published by . This book was released on 1989 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: What should be done to improve our understanding and appreciation of the properties of concrete at early ages? This question was the basis for an Engineering Foundation Conference on the topic of "The Properties of Concrete at Early Ages." To answer the above question, the conference participants developed the recommendations summarized in this technical note. The recommendations addressed the need to: gain a better understanding of cement paste microstructure; improve codes and standards; control temperature rise during construction; and educate the users of concrete.

Download or read book Studying the Microstructure and Modeling the Mechanical Properties of Early age Cement based Materials written by Giri Venkiteela and published by . This book was released on 2010 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is very important to have a solid knowledge on setting and mechanical properties behaviors of early-age concretes. To enhance the current understanding of these behaviors in cement-based materials, microstructure and two different mechanical properties developments were studied in this dissertation for various mixtures. To establish a better understanding of the physical behaviors of cement particles during setting, in-situ observations were made on microstructure developments of various fresh cement pastes using an advance Scanning Electron Microscopy (SEM) technique called the Quantomix WETSEM(TM) capsuling system. Using the image analysis techniques on the captured images, microstructure changes of these cement pastes were then quantitatively investigated. During the study, single and multiple cement particle growth, hydration rate of different sized cement particles, water and solid volume fraction changes were studied quantitatively. The correlations of Vicat needle settlements, heat of hydration, and dynamic shear modulus development within the cement pastes with-respect-to total solids growth were also studied. Further, a comprehensive model for dynamic Young's modulus (E d ) of early-age normal concrete was proposed based on its original mix-design. Based on the experimental work and the Artificial Neural Network (ANN) technique, various cement paste, mortar and concrete mixture elastic moduli were modeled on a single platform. The role of hydration age, water-to-cement (w/c) ratio, curing temperature, aggregate volume percentages, aggregate absorption capacities and aggregate sizes on the development of elastic moduli were considered. Using the generalization capabilities of ANN, effective mix-design parameters affecting the concrete elastic modulus evolution at early ages were identified. It was thus possible to quantify the significant effects of age, w/c ratio, coarse aggregate volume percentage, and curing temperature on the evolution of the concrete elastic modulus. Finally, the compressive strength (f c ) of normal concrete at early ages was modeled as a function of the dynamic shear modulus (G d ). The effects of various parameters such as hydration age, water-to-cement (w/c) ratio, curing temperature, aggregate content and maximum aggregate size were examined on the G d -f c relationship of composite mixtures. Based on the key factors that were identified, G d -f c relationship was then mathematically modeled. Being in simple expression form and having the accuracy in prediction of f c values for concrete composites, the developed model can be directly used in field.

Download or read book A Report on the Physical Properties of Concrete at Early Ages written by Truman Jones (R.) and published by . This book was released on 1961 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Physical Properties of Concrete at Early Ages written by Francis Ajiboye Oluokun and published by . This book was released on 1989 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Properties of Concrete at Early Ages written by and published by . This book was released on 1986 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plain Concrete at Early Ages written by Jan Byfors and published by . This book was released on 1980 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Tensile Strength and Elasticity of Concrete at Early Ages written by D. C. Kennard and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Hydroxyethyl Cellulose on Properties of Concrete at Early Ages written by Vipinchandra R. Shah and published by . This book was released on 1964 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical Properties of Concrete at Early Ages written by Curtis Eugene Weddle and published by . This book was released on 1957 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Test Methods for the Determination of Mechanical Properties of Concrete at an Early Age written by Luis Comes García and published by . This book was released on 1998 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modulus of Elasticity of Concrete at Early Ages written by T. W. Thomas and published by . This book was released on 1961 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: