Economic Design and Construction with Structural Lightweight Aggregate Concrete

Hammer, Tor Arne; Breugel, K. van; Helland, Steinar; Holand, Ivar; Maage, M; Mijnsbergen, Jan P. G.; Sveinsdóttir, Edda Lilja

doi:10.1002/3527606211.ch3

“…It is important here to mention that utilizing the LWCA was only for a structural purpose and not for its thermal behaviour. (Clarke, 2002;Hammer et al, 2005).…”

Section: Which Sources Are Investigated To Identify These Technologies?mentioning

confidence: 99%

Integrating Building Functions into Massive External Walls

Hisham Hafez

2016

Architecture and the Built Environment

0

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Well into the twentieth century, brick and stone were the materials used. Bricklaying and stonemasonry were the construction technologies employed for the exterior walls of virtually all major structures. However, with the rise in quality of life, the massive walls alone became incapable of fulfilling all the developed needs. Adjacent systems and layers had then to be attached to the massive layer. Nowadays, the external wall is usually composed of a layered construction. Each external wall function is usually represented by a separate layer or system. The massive layer of the wall is usually responsible for the load-bearing function. Traditional massive external walls vary in terms of their external appearance, their composition and attached layers. However, their design and construction process is usually a repeated process. It is a linear process where each discipline is concerned with a separate layer or system. These disciplines usually take their tasks away and bring them back to be re-integrated in a layered manner. New massive technologies with additional function have recently become available. Such technologies can provide the external wall with other functions in addition to its load-bearing function. The purpose of this research is to map the changes required to the traditional design and construction process when massive technologies with additional function are applied in external walls. Moreover, the research aims at assessing the performance of massive solutions with additional function when compared to traditional solutions in two different contexts, the Netherlands and Egypt. Through the analysis of different additional function technologies in external walls, a guidance scheme for different stakeholders is generated. It shows the expected process changes as related to the product level and customization level. Moreover, the research concludes that the performance of additional insulating technologies, and specifically Autoclaved Aerated Concrete can provide a better construction compared to the traditional external wall construction of the Netherlands and Egypt.

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“…It is important here to mention that utilizing the LWCA was only for a structural purpose and not for its thermal behaviour. (Clarke, 2002;Hammer et al, 2005).…”

Section: Which Sources Are Investigated To Identify These Technologies?mentioning

confidence: 99%

Integrating Building Functions into Massive External Walls

Hisham Hafez

2016

Architecture and the Built Environment

0

View full text Add to dashboard Cite

Well into the twentieth century, brick and stone were the materials used. Bricklaying and stonemasonry were the construction technologies employed for the exterior walls of virtually all major structures. However, with the rise in quality of life, the massive walls alone became incapable of fulfilling all the developed needs. Adjacent systems and layers had then to be attached to the massive layer. Nowadays, the external wall is usually composed of a layered construction. Each external wall function is usually represented by a separate layer or system. The massive layer of the wall is usually responsible for the load-bearing function. Traditional massive external walls vary in terms of their external appearance, their composition and attached layers. However, their design and construction process is usually a repeated process. It is a linear process where each discipline is concerned with a separate layer or system. These disciplines usually take their tasks away and bring them back to be re-integrated in a layered manner. New massive technologies with additional function have recently become available. Such technologies can provide the external wall with other functions in addition to its load-bearing function. The purpose of this research is to map the changes required to the traditional design and construction process when massive technologies with additional function are applied in external walls. Moreover, the research aims at assessing the performance of massive solutions with additional function when compared to traditional solutions in two different contexts, the Netherlands and Egypt. Through the analysis of different additional function technologies in external walls, a guidance scheme for different stakeholders is generated. It shows the expected process changes as related to the product level and customization level. Moreover, the research concludes that the performance of additional insulating technologies, and specifically Autoclaved Aerated Concrete can provide a better construction compared to the traditional external wall construction of the Netherlands and Egypt.

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“…Several studies (Nahhab and Ketab, 2020;Nepomuceno, 2018;Ismail and Halim, 2020;Muñoz et al, 2018) found that the properties of mortars and concretes containing ECA depend on the size and shape of aggregate. The use of ECAs with different quantities and combinations in the production of concrete is possible and represents a potential alternative to conventional concrete (Rumsys et al, 2018;Bogas et al, 2012;Bogas et al, 2012;Hubertova and Hela, 2013;Lee et al,2019;Hammer et al, 2000). However, few studies focused on the effect of expanded clay aggregate size on concretes and the resistance of this concrete to freeze-thaw cycles.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Workability Compressive Strength and Freeze-Thaw Durability of Concrete Containing Expanded Clay Aggregates

Bensalem¹,

Khouadjia

²

,

Abdou³

et al. 2022

Aceh Int. J. Sci. Technol

1

0

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The development of the building materials industry in Algeria and worldwide has opened up new commercial opportunities for waste recovery. Using recycled materials and natural resources such as expanded clay aggregates are increasingly seen as a solution for the future to meet the gap between production, consumption and environmental protection. The present study investigates the effect of expanded clay aggregate (ECA) on a concrete slump, porosity, softening coefficient, compressive strength, and Freeze-thaw durability. Tests were conducted according to Russian National State Standard (GOST) 10060-2012 of concrete mixtures with expanded clay aggregate (ECA). A total of 7 mixtures were prepared. One is considered a reference mixture based on limestone aggregates. The other six mixtures were prepared by replacing the limestone aggregates with expanded clay aggregates, using two substitution rates (15%, 30% by weight) and three aggregates sizes (Sand 0/4, Gravel 8/16, and 16/25) while maintaining the same w/b ratio. The results indicate that ECAs can be used for concrete production. Furthermore, concrete containing 30% ECA (0/4) has the best properties and is the most freeze-thaw resistant than the other mixtures with ECA.

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Economic Design and Construction with Structural Lightweight Aggregate Concrete

Cited by 14 publications

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Integrating Building Functions into Massive External Walls

Integrating Building Functions into Massive External Walls

Integrating Building Functions into Massive External Walls

Experimental Evaluation of Workability Compressive Strength and Freeze-Thaw Durability of Concrete Containing Expanded Clay Aggregates

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