Improving the thermal transmittance of single-brick walls built of clay bricks lightened with paper pulp

Muñoz, Pedro; Juárez, M.C.; Morales, M.P.; Mendívil, M.A.

doi:10.1016/j.enbuild.2012.12.022

Cited by 38 publications

(18 citation statements)

References 23 publications

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“…Figure shows the compressive strength as a function of porosity. There is a trend that the higher porosity brick leads to lower compressive strength, and this observation is supported by other researchers . However, the additive in the clay brick and the size of the pore may also have an effect on compressive strength.…”

Section: Resultssupporting

confidence: 69%

A Comparison of Thermal and Mechanical Properties of Clay Bricks Prepared with Three Different Pore‐Forming Additives: Vermiculite, Wood Ash, and Sawdust

Beal

Selby

Atwater

et al. 2019

Env Prog and Sustain Energy

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The thermal and mechanical properties of fired clay bricks containing three different pore‐forming additives at comparable concentrations (~25 wt %) were investigated. The additives included three types: inorganic (vermiculite), organic (sawdust), and ash (wood ash). These additives have very different pore‐forming mechanisms during the firing process and leave very different residuals in the fired brick. Brick properties are affected by the brick forming process (e.g., the raw materials, forming, drying, and firing processes), and so there is wide variation in the effects of additives on brick properties in the published literature. Therefore, the objective of this effort was to compare selected properties of fired clay bricks with different types of additives, while keeping the brick forming process the same. In this study, the trends in bulk density, porosity, water absorption, compressive strength, and thermal conductivity with incorporation of additives in clay bricks support those that have been published. However, the thermal conductivity of the brick with 25 wt % wood ash was comparable to that for the brick without additives, despite having greater porosity and lower bulk density. This supports that both the pores formed during the firing process and the residuals of the additives significantly impact the brick properties. © 2019 American Institute of Chemical Engineers Environ Prog, 38: e13150, 2019

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Section: Resultssupporting

confidence: 69%

A Comparison of Thermal and Mechanical Properties of Clay Bricks Prepared with Three Different Pore‐Forming Additives: Vermiculite, Wood Ash, and Sawdust

Beal

Selby

Atwater

et al. 2019

Env Prog and Sustain Energy

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show abstract

“…In the brick industry, a great effort was devoted to the reduction of thermal conductivity of the brick body using, e.g., vegetable matter [12] or paper pulp [13]. In parallel, the producers tried to http utilize the positive thermal properties of dry air by involving it into the brick.…”

Section: Introductionmentioning

confidence: 99%

Computational assessment of thermal performance of contemporary ceramic blocks with complex internal geometry in building envelopes

Kočí

Maděra

Jerman

et al. 2015

Energy and Buildings

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“…Munoz ve ark. dış duvarların ısıl davranışı konusunda en önemli faktörlerden birinin tuğla kilin ısıl iletkenliği olduğunu, ateş kilinin ısıl ve mekanik özellikleri üzerinde kağıt hamurunun iletkenliği iyileştirdiğini dile getirmişlerdir [11]. Karakoç yaptığı çalışmada, genleştirilmiş perlit agregası ve pomza agregasından müteşekkil betonun basınç dayanımındaki değişimlerin soğuma ortamına bağlı olduğunu ifade etmiştir [12].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Yapi Malzemesi̇ Üreti̇mi̇nde Genleşti̇ri̇lmi̇ş Perli̇t Agregasi Kullanilabi̇li̇rli̇ği̇ni̇n Araştirilmasi

Çelik¹,

Kılıç²,

Akkurt³

2014

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETBu çalışmanın amacı ana hammadde olarak genleştirilmiş perlit agregası kullanarak duvar örgü elemanı üretilebilirliğinin araştırılmasıdır. Bu amaçla üretilen kontrol numunesinin (50x100x100 mm ebadında) birim hacim ağırlık (BHA), mekanik özellikler gibi mühendislik özellikleri ile beraber, üretim parametreleri (pişme süresi, pişme sıcaklığı, sıkıştırma basınç oranı, kimyasal katkı oranı, boyut analizi ve su/katı oranı) belirlenerek optimize edilmiştir. Sıkıştırma basıncı, pişme sıcaklığı, pişme süresi, bekleme (kür) süresi gibi tasarım parametreleri değiştirilerek, numune üretimi için en etkin değerler belirlenmiştir. Çalışmalar sonucunda, su/katı oranı 1,0 olan, 50 bar basınçta üretilen ve 200ºC sıcaklıkta 1 saat süreyle pişirilen numunelerden en düşük birim hacim ağırlık 522,5±48,3 kg/m 3 ve en yüksek basınç dayanımı 12,13±0,13 kg/cm 2 olarak tespit edilmiştir. Ancak, doğal bağlayıcı kullanmadan üretilen kontrol numune için elde edilen basınç dayanımı değerleri TS EN 771-1 sınır değerlerinin altında bulunmuştur.Anahtar Kelimeler: Genleştirilmiş perlit agregası, Yapı malzemesi, Basınç dayanımı, Pişme sıcaklığı INVESTIGATION OF AVAILABILITY OF EXPANDED PERLITE IN THE PRODUCTION OF CONSTRUCTION MATERIAL ABSTRACTThe aim of this study is investigation of wall stone reproducibility using expanded perlite aggregate as a main raw material. For this purpose, production parameters (burning period, burning temperature, pressing pressure ratio, chemical additive ratio, dimension analysis and water/solid (w/s) ratio and also engineering parameters such as weight per unit of volume, mechanical properties of produced control brick (with a dimension of 50x100x100 mm) were determined and optimized. The most effective values for the brick production were designated by changing optimization parameters like pressing pressure, burning temperature, burning period, holding (curing) time. As a result of the study, the lowest value of weight per unit of volume and the highest value of compressive strength were ascertained as 522.5±48.3 kg/m 3 and 12.13±0.13 kg/cm 2 respectively for the samples which were produced at 50 bar pressure and 200ºC temperature with 1 h burning period and w/s ratio of 1.0. However, obtained compressive strength values for the control sample produced without using binder were found to lower the standards of TS EN 771-1.

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Improving the thermal transmittance of single-brick walls built of clay bricks lightened with paper pulp

Cited by 38 publications

References 23 publications

A Comparison of Thermal and Mechanical Properties of Clay Bricks Prepared with Three Different Pore‐Forming Additives: Vermiculite, Wood Ash, and Sawdust

A Comparison of Thermal and Mechanical Properties of Clay Bricks Prepared with Three Different Pore‐Forming Additives: Vermiculite, Wood Ash, and Sawdust

Computational assessment of thermal performance of contemporary ceramic blocks with complex internal geometry in building envelopes

Yapi Malzemesi̇ Üreti̇mi̇nde Genleşti̇ri̇lmi̇ş Perli̇t Agregasi Kullanilabi̇li̇rli̇ği̇ni̇n Araştirilmasi

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