Araştırma Makalesi

Gypsum-Based Boards Made from Mixtures of Waste Cellulosic Sources: Part 1. Physical and Mechanical Properties

Sayı: 16 31 Ağustos 2019
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Gypsum-Based Boards Made from Mixtures of Waste Cellulosic Sources: Part 1. Physical and Mechanical Properties

Abstract

It was realized that post-consumer waste paper, old corrugated container (OCC) and secondary fiber addition (cellulosic additives) to gypsum in panel structure negative impact on Thickness Swelling (TS) values in water. However, highest TS values of 23.32% (A6) in A-type, 12.76 (B6) in B-type and 7.79% (C6) in C-type experimental boards found at similar proportions (50:50 w/w) of gypsum and cellulosic additives while the lowest with control sample that was only 1.88%. Moreover, the boards produced by secondary fiber/gypsum mixture (C type boards) under similar ratios (w/w) were found to higher IB strength than others. The highest IB strength value of 0.60 N/mm2 found for C3 board while the ratio of the secondary fiber in the mixture to be more than 20% negative effects on IB values ​​to a certain extent. The addition of all three cellulosic sources to the gypsum structure increases the bending strength properties some level. At 10% (A2: 6.59 N/mm2) and 50% (A6: 6.44 N/mm2) proportion levels, A-type boards show higher bending strengths than the B- and C-type boards. In all manufacturing conditions and board types, the natural weathered boards have always shown lower hardness properties than counterpart control samples.

Keywords

Kaynakça

  1. ASTM-C 1113-09. (2013). Standard Test Method for Thermal Conductivity of Refractories by Hot Wire (Platinum Resistance Thermometer Technique), ASTM International, West Conshohocken, PA.
  2. ASTM D2240-15e1. (2015). Standard Test Method for Rubber Property—Durometer Hardness, ASTM International, West Conshohocken, PA.
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  4. Baipai, P. (2013). Recycling and Deinking of Recovered Paper, NY. 240 p.
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  7. Grigoriou, A. H. (2003). Waste Paper–Wood Composites Bonded With Isocyanate. Wood Science and Technology, 37(1), 79-90.
  8. Demir, I. (2019). Investıgatıon of the technological properties of gypsum composites produced from some cellulosic based secondaryfiber sources, Süleyman Demirel University, Graduate School of Applied and Natural Sciences, MSc. Thesis, (Turkish, Abstract in English) Isparta. 113 p.

Ayrıntılar

Birincil Dil

İngilizce

Konular

Mühendislik

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

31 Ağustos 2019

Gönderilme Tarihi

14 Mayıs 2019

Kabul Tarihi

10 Temmuz 2019

Yayımlandığı Sayı

Yıl 2019 Sayı: 16

Kaynak Göster

APA
Şahin, H., & Demir, İ. (2019). Gypsum-Based Boards Made from Mixtures of Waste Cellulosic Sources: Part 1. Physical and Mechanical Properties. Avrupa Bilim ve Teknoloji Dergisi, 16, 567-576. https://doi.org/10.31590/ejosat.565240

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