Properties of gypsum composites with sawdust

Regulska, Katarzyna; Repelewicz, A.

doi:10.1051/e3sconf/20199702037

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The aim of the presented research was to determine the possibility of using various commercially available gypsum kinds, including the jewelry casting gypsum as a binder for the moulding and core sandmixes [10][11][12].…”

Section: Purpose Of the Researchmentioning

confidence: 99%

Archives of Foundry Engineering

Paduchowicz,

Stachowicz,

Baszczuk

et al. 2019

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The paper presents the preliminary results of research on determining the possibilities of using available on the market commercial gypsum kinds as a binder for foundry moulding and core sandmixes. Construction gypsum and plaster gypsum, finishing coat and jewelry casting gypsum were tested. Elemental composition of gypsum kinds were carried out using a scanning electron microscope (SEM) with EDS/EDX probe, their crystal structure and phase composition was determined by analyzing the results of X-ray diffraction measurements (XRD) and thermogravimetric studies (TG-DTA). Evaluation of the mechanical properties of selected materials was carried out at the tensile strength test of the dog-bone samples after initial hardening of gypsum mortar at 25 °C for 5 h and drying at 110 °C for 24 hours. The impact of the properties of the used commercial gypsum kinds on the possibility of their use as a valuable binders in the manufacture of the foundry sandmixes for moulds and cores was evaluated. Construction gypsum and finishing coat have the highest tensile strength. Plaster gypsum and finishing coat have the longest setting time. In all tested types of gypsum, the initial water loss during heating occurs at a temperature of about 200 °C. The lowest valuable properties as a binder for sand moulding mixtures has jewelry casting gypsum mass.

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Section: Purpose Of the Researchmentioning

confidence: 99%

Archives of Foundry Engineering

Paduchowicz,

Stachowicz,

Baszczuk

et al. 2019

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show abstract

“…In order to improve physical properties of gypsum board such as high permeable to water, porous nature, low compressive strength, low flexural and tensile strength can be added different fillers that reinforcing materials that polypropylene fibres, jute fibres, coconut fibres, hemp fibres and wood fibre to gypsum boards. So, physical and thermal conductivity can be improved by some additives (Regulska and Repelewicz, 2019;Beram and Yasar, 2020;Herrera, and Cloutier, 2010;Sophia and Sakthieswaran, 2016;Amiandamhen et al 2016). The presence of wood materials in these boards improves the mechanical properties while retaining the great fire resistance on boards (El-Juhany, et al 2003;Icel and Beram, 2017).…”

Section: Introductionmentioning

confidence: 99%

Physical, Mechanical and Thermal Properties of Red Pine Wood-Gypsum Particleboard

Kaya

Yalçın

Türker

2021

Bilge International Journal of Science and Technology Research

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Physical, mechanical and some thermal properties of gypsum -wood mixture particleboards were analyzed for specimens which were prepared in different proportions previously conditioned at 23 ˚C and 65% relative humidity. Water absorbtion (WA) and thickness swelling (TS) properties were measured after being soaked in water for 24 hours. Furthermore, the increment of wood particle was increased the water absobtion values around 28.5 % and 2.1% thickness swelling values, respectively. However, the reduction of gypsum ratio was negatively effected the mechanical resistance of the boards. The highest MOR, MOE and internal bond (IB) values were observed in the C1 code board with 4.73 MPa, 27.04 MPa and 0.97 N/mm 2 respectively. The thermal conductivity of woodgypsum boards were ranged from 0.7404-0.5021 W/mK. The highest density was found in C1 type board as 1.333 kg/m³ and also the highest thermal coductivity was observed a t t h e same sample. Besides, the highest surface temprature which was passed to opposite side of flame source, was found in C5 as 141.7 o C after 300 seconds. However, the lowest value was observed in C1 type board as 93.3 ˚C after 300 seconds.

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Właściwości Kompozytów Gipsobetonowych Z Wypełniaczami Organicznymi W Postaci Mieszanki Trocinowo-Wiórowej

Regulska

Częstochowska²

2020

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo

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W niniejszej pracy przedstawiono wyniki badań niepełnych oraz pełnych gipsobetonów z wypełniaczem stanowiącym mieszankę trocinowo-wiórową. Głównym celem przeprowadzonych badań było ustalenie wpływu składu mieszanek kompozytów oraz sposobu przygotowania wypełniaczy na jakość kompozytów, w szczególności na ich cechy wytrzymałościowe. Wykazano, że zastosowanie mieszanki trocin i wiórów może stanowić alternatywne rozwiązanie do znanego z literatury zastosowania trocin jako wypełniacza kompozytów gipsobetonowych. Właściwości fizyczne i mechaniczne kompozytów z tymi wypełniaczami organicznymi spełniają wymagania normy branżowej.

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Properties of gypsum composites with sawdust

Cited by 3 publications

References 2 publications

Archives of Foundry Engineering

Archives of Foundry Engineering

Physical, Mechanical and Thermal Properties of Red Pine Wood-Gypsum Particleboard

Właściwości Kompozytów Gipsobetonowych Z Wypełniaczami Organicznymi W Postaci Mieszanki Trocinowo-Wiórowej

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