RILEM Technical Committee 195-DTD Recommendation for Test Methods for AD and TD of Early Age Concrete - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook RILEM Technical Committee 195-DTD Recommendation for Test Methods for AD and TD of Early Age Concrete write by Øyvind Bjøntegaard. This book was released on 2014-08-28. RILEM Technical Committee 195-DTD Recommendation for Test Methods for AD and TD of Early Age Concrete available in PDF, EPUB and Kindle. This report presents the Round-Robin (RR) program and test results including a statistical evaluation of the RILEM TC195-DTD committee named “Recommendation for test methods for autogenous deformation (AD) and thermal dilation (TD) of early age concrete”. The task of the committee was to investigate the linear test set-up for AD and TD measurements (Dilation Rigs) in the period from setting to the end of the hardening phase some weeks after. These are the stress-inducing deformations in a hardening concrete structure subjected to restraint conditions. The main task was to carry out an RR program on testing of AD of one concrete at 20 °C isothermal conditions in Dilation Rigs. The concrete part materials were distributed to 10 laboratories (Canada, Denmark, France, Germany, Japan, The Netherlands, Norway, Sweden and USA), and in total 30 tests on AD were carried out. Some supporting tests were also performed, as well as a smaller RR on cement paste. The committee has worked out a test procedure recommendation which is reported separately and submitted acceptance as a RILEM method.
RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Structures
RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Structures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Structures write by Philip J. Nixon. This book was released on 2015-09-30. RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Structures available in PDF, EPUB and Kindle. This book contains the full set of RILEM Recommendations which have been produced to enable engineers, specifiers and testing houses to design and produce concrete which will not suffer damage arising from alkali reactions in the concrete. There are five recommended test methods for aggregates (designated AAR-1 to AAR-5), and an overall recommendation which describes how these should be used to enable a comprehensive aggregate assessment (AAR-0). Additionally, there are two Recommended International Specifications for concrete (AAR-7.1 & 7.2) and a Preliminary International Specification for dams and other hydro structures (AAR-7.3), which describe how the aggregate assessment can be combined with other measures in the design of the concrete to produce a concrete with a minimised risk of developing damage from alkali-aggregate reactions.
Advanced Techniques for Testing of Cement-Based Materials
Advanced Techniques for Testing of Cement-Based Materials - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Advanced Techniques for Testing of Cement-Based Materials write by Marijana Serdar. This book was released on 2020-02-18. Advanced Techniques for Testing of Cement-Based Materials available in PDF, EPUB and Kindle. The book examines advanced, non-standardized techniques that have been developed for determining different properties of cement paste, mortar and concrete, and provides state-of-the-art information on methods for monitoring hydration-induced changes in cement-based materials (CBMs). These methods are often nondestructive and allow quasi-continuous monitoring covering the time span from placement of the material to formation of a fully hardened cement composite. The book also presents various applications of acoustic emission for characterizing fresh concrete, recent developments in ultrasonic methods for characterizing CBMs since placement, application of ambient response methods for measuring elastic modulus, methods for determining deformational characteristics of CBMs since setting and methods for in situ measurements of stresses in concrete elements during hardening.
Volume Changes of Hardening Concrete
Volume Changes of Hardening Concrete - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Volume Changes of Hardening Concrete write by Ole Mejlhede Jensen. This book was released on 2006. Volume Changes of Hardening Concrete available in PDF, EPUB and Kindle.
Application of Super Absorbent Polymers (SAP) in Concrete Construction
Application of Super Absorbent Polymers (SAP) in Concrete Construction - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Application of Super Absorbent Polymers (SAP) in Concrete Construction write by Viktor Mechtcherine. This book was released on 2012-01-03. Application of Super Absorbent Polymers (SAP) in Concrete Construction available in PDF, EPUB and Kindle. This is the state-of-the-art report prepared by the RILEM TC “Application of Super Absorbent Polymers (SAP) in concrete construction”. It gives a comprehensive overview of the properties of SAP, specific water absorption and desorption behaviour of SAP in fresh and hardening concrete, effects of the SAP addition on rheological properties of fresh concrete, changes of cement paste microstructure and mechanical properties of concrete. Furthermore, the key advantages of using SAP are described in detail: the ability of this material to act as an internal curing agent to mitigate autogenous shrinkage of high-performance concrete, the possibility to use SAP as an alternative to air-entrainment agents in order to increase the frost resistance of concrete, and finally, the benefit of steering the rheology of fresh cement-based materials. The final chapter describes the first existing and numerous prospective applications for this new concrete additive.
