Institute of Glass and Ceramic Research and Testing IGCRT

Dhaka, Bangladesh

Institute of Glass and Ceramic Research and Testing IGCRT

Dhaka, Bangladesh
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Sarmeen Akhtar U.,Institute of Glass and Ceramic Research and Testing IGCRT | Moniruz Zaman M.,Institute of Glass and Ceramic Research and Testing IGCRT | Islam M.S.,Institute of Glass and Ceramic Research and Testing IGCRT | Nigar F.,Institute of Glass and Ceramic Research and Testing IGCRT | Hossain M.K.,BCSIR Laboratories
Transactions of the Indian Ceramic Society | Year: 2017

Generally conventional bricks of Bangladesh are sintered at 950o to 1050°C temperature. These bricks have compressive strength between 2600 and 3000 psi. To lower the sintering temperature, waste glass powder (borosilicate glass, coloured glass and sodalime glass) was used in the production of bricks and sintering temperature was successfully lowered to 650°C. Among the glass powder used, sodalime glass produced the best result. Compressive strength of the brick made with 50% sodalime glass was around 31.36 MPa (4550 psi), which was much higher than that of conventional brick. Higher percentage of sodalime glass resulted in degraded quality of bricks. Other physical properties of bricks like bulk density, apparent porosity, water absorption and shrinkage were also better than those of conventional one. Longevity of bricks increases when they contain both glassy and crystalline phases. While conventional bricks possess no or less amount of glassy phase, XRD patterns of the prepared brick sample showed prominent glassy phase along with crystalline phase in it. © 2017 Indian Ceramic Society.


Kabira S.F.,University of Dhaka | Ahmed S.,Institute of Glass and Ceramic Research and Testing IGCRT | Ahsanb M.,Institute of Glass and Ceramic Research and Testing IGCRT | Mustafa A.I.,University of Dhaka
Trends in Biomaterials and Artificial Organs | Year: 2012

The present paper describes calcination of pure and Zn doped hydroxyapatite (HA) (of different mol %) at four different temperatures for observing the sintering behavior and concentration effects. Doped and un-doped apatites were synthesized from waste egg shell as Ca precursor through precipitation method. The substituting limit was up to 8mol%. The influence of sintering condition on phase composition was evaluated by using Fourier transform infrared spectrometer (FT-IR), X-ray diffraction (XRD) and scanning electron microscopy SEM techniques. Presence of Zn was confirmed from x-ray fluorescence (XRF) and electron diffraction spectroscopy (EDS) analyses. Crystallographic values were calculated and comparable discussion was presented. Observed data were also in excellent agreement with the standard values for HA.


Kabir S.F.,University of Dhaka | Ahmed S.,Institute of Glass and Ceramic Research and Testing IGCRT | Ahsan M.,Institute of Glass and Ceramic Research and Testing IGCRT | Mustafa A.I.,University of Dhaka
Trends in Biomaterials and Artificial Organs | Year: 2012

Sodium doped hydroxyapatite (HA) (of different mol%) was calcined at four different temperatures for observing the sintering behavior and concentration effects. Doped and pure apatites were synthesized from waste egg shell as Ca precursor through precipitation method. The substitution limit was up to 8mol%. Atomic absorption (AAS) and UV spectrophotometric methods were followed to detect the presence of Na, Ca, P etc. Quantitative analysis was carried out by X-ray fluorescence (XRF) and electron diffraction spectroscopy (EDS). The influence of sintering temperature on phase composition was evaluated by using Fourier transform infrared spectrometer (FT-IR), X-ray diffraction (XRD) and Scanning electron microscopy SEM techniques. Crystallographic values were calculated and comparable discussion was presented. Observed data were also in excellent agreement with the standard JCPDS values for HA.

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