ACI 122R-14 Guide to Thermal Properties of Concrete and Masonry Systems PDF Download

Author: American Concrete Institute
Publisher:
ISBN: 9780870319716
Category :
Languages : en
Pages : 32

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Author: ACI Committee 122
Publisher:
ISBN: 9780870310850
Category : Concrete
Languages : en
Pages : 21

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20

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New materials, modern building wall technologies now available in the building marketplace, and unique, more accurate, methods of thermal analysis of wall systems create an opportunity to design and erect buildings where thermal envelopes that use masonry wall systems can be more efficient. Thermal performance of the six masonry wall systems is analyzed. Most existing masonry systems are modifications of technologies presented in this paper. Finite difference two-dimensional and three-dimensional computer modeling and unique methods of the clear wall and overall thermal analysis were used. In the design of thermally efficient masonry wall systems is t to know how effectively the insulation material is used and how the insulation shape and its location affect the wall thermal performance. Due to the incorrect shape of the insulation or structural components, hidden thermal shorts cause additional heat losses. In this study, the thermal analysis of the clear wall was enriched with the examination of the thermal properties of the wall details and the study of a quantity defined herein the Thermal Efficiency of the insulation material.

Author: Naufal Murtadza
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Past studies on thermal conductivity of concrete use these three types of methods which include the two linear parallel probe (TLPP), transient plane source (TPS), and hot guarded plate (HGP). The test method requires the test samples to be fixed between hot and cold plates so a constant heat stream can flow over the test samples. This project uses the Transient Plane Source (TPS) method to measure thermal conductivity by sandwiching a singular spiraling flat sensor and probe between two concrete disks. The electric current passes through the probe to increase the heat, and the sensor will measure the thermal conductivity. But factors that are not mentioned in the ACI 122R Guide to Thermal Properties of Concrete and Masonry systems, such as the sensor location and measurement time, may affect the sample's thermal conductivity value since it is related to the thermal diffusivity value. Furthermore, with the increase in demand for a more sustainable concrete, foamed glass aggregate (FGA) is added to the concrete mix for the project as it was previously observed to have insulation capability in concrete. However, further study about FGA is needed to understand how it affects the concrete's expansion. Only a few past studies determine how significant the sensor location, measurement time, and FGA influence the result. Hence, further research is needed to optimize the input parameters of thermal conductivity testing concrete to get the most accurate results.

Author: American Concrete Institute
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 1196

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Author: Pierre Pimienta
Publisher: Springer
ISBN: 3319954326
Category : Technology & Engineering
Languages : en
Pages : 152

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This book presents the work done by the RILEM Technical Committee 227-HPB (Physical properties and behaviour of High-Performance Concrete at high temperature). It contains the latest research results on the behaviour of high-performance concretes at high temperature. The book presents the state of the art of experimental data on High-Performance concretes and it collects and synthesizes useful data about concrete behaviour at high temperatures. The book is divided into independent chapters dealing with degradation reactions in concrete exposed to high temperatures; mass transport properties; thermal properties; and mechanical properties. The results presented especially target a group of users composed by universities and testing laboratories, building material companies and industries, material scientists and experts, building and infrastructure authorities, designers and civil engineers.

Author: Mukesh C Limbachiya
Publisher: CRC Press
ISBN: 0203883446
Category : Technology & Engineering
Languages : en
Pages : 596

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The concrete industry has embraced innovation and ensured high levels of long-term performance and sustainability through creative applications in design and construction. As a construction material, the versatility of concrete and its intrinsic benefits mean it is still well placed to meet challenges of the construction industry. Indeed, concrete

Author: S.O. Ekolu
Publisher: IOS Press
ISBN: 1614994668
Category : Technology & Engineering
Languages : en
Pages : 1562

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Book Description
The two volumes of these Proceedings contain about 200 conference papers and 10 keynote papers presented at the First International Conference on Construction Materials and Structures, held in Johannesburg, South Africa from 24 to 26 November 2014. It includes sections on Materials and characterization; Durability of construction materials; Structural implications, performance, service life; Sustainability, waste utilization, the environment; and Building science and construction.

Author: Jan Kośny
Publisher: Springer Nature
ISBN: 3030986934
Category : Architecture
Languages : en
Pages : 487

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This book offers a unique treatment of building insulating products and the integration of these products with building components. This book was written for all those involved in building design, specification, construction, and commissioning, providing them with an understanding of and appreciation for the wide variety of thermal insulation products and technologies available for use in all types of buildings. The book proceeds from basic definitions and discussion of heat-transfer topics and thermal insulation concepts, to the design and use of these products. The impact of thermal insulation on dynamic building performance, including factors other than heating and cooling, is also discussed. The book does not require an advanced mathematical background. The authors provide sufficient information to provide a qualitative understanding, with more mathematical sections included for those interested in modeling and analysis. The basic physics associated with heat transfer in buildings are presented, along with the steady-state and transient analysis techniques needed for the effective implementation of thermal insulation and assemblies. Modern building design involves the integration of comfort, safety, economics, durability and cost considerations, all of which impact the selection and use of thermal insulation materials in buildings. In addition to theoretical explanations of the underlying science, the book details the properties and application of new thermal insulation materials, including vacuum panels, gas-filled panels, aerogels, phase-change materials, and radiation control technologies. Given its scope, the book will be of interest to researchers and building engineers wishing to understand the latest technologies and materials available, so as to achieve reduced energy consumption in commercial and residential buildings.

Author: Martin Abraham
Publisher: Elsevier
ISBN: 0128047925
Category : Science
Languages : en
Pages : 2276

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Book Description
Encyclopedia of Sustainable Technologies, Eight Volume Set provides an authoritative assessment of the sustainable technologies that are currently available or in development. Sustainable technology includes the scientific understanding, development and application of a wide range of technologies and processes and their environmental implications. Systems and lifecycle analyses of energy systems, environmental management, agriculture, manufacturing and digital technologies provide a comprehensive method for understanding the full sustainability of processes. In addition, the development of clean processes through green chemistry and engineering techniques are also described. The book is the first multi-volume reference work to employ both Life Cycle Analysis (LCA) and Triple Bottom Line (TBL) approaches to assessing the wide range of technologies available and their impact upon the world. Both approaches are long established and widely recognized, playing a key role in the organizing principles of this valuable work. Provides readers with a one-stop guide to the most current research in the field Presents a grounding of the fundamentals of the field of sustainable technologies Written by international leaders in the field, offering comprehensive coverage of the field and a consistent, high-quality scientific standard Includes the Life Cycle Analysis and Triple Bottom Line approaches to help users understand and assess sustainable technologies