Formula of Moulding Sand, Bentonite and Portland Cement toImprove The Quality of Al-Si Cast Alloy

Andoko Andoko, Poppy Puspitasari, Avita Ayu Permanasari, Didin Zakaria Lubis


A binder is any material used to strengthen the bonding of moulding sand grains. The primary function of the binder is to hold the moulding sand and other materialstogether to produce high-quality casts. In this study, there were four binder compositions being tested, i.e. 5% bentonite + 5% Portland cement, 4% bentonite + 6% Portland cement, 6% bentonite + 4% Portland cement, and 7% bentonite + 3% Portland cement. Each specimen was measured for its compressive strength, shear strength, tensile strength and permeability. The highest compressive strength was obtained fromthe specimen composed of 6% bentonite+ 4% Portland cement. The highest shear strength was obtained from the moulding sand with 7% bentonite+ 3%Portland cement. The highest tensile strength was obtained fromthe specimen contained 5% bentonite+ 5% Portland cement. The specimen composed of 5% bentonite + 5% Portland cement had the lowest permeability of 131 ml/min, while that of 6% bentonite + 4% Portland cement had the highest permeability of 176 ml/min.


Bentonite, Portland cement, Strength of moulding sand.

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A. I Made, “Pengaruh Jenis Pasir Cetak dengan Zat Pengikat Bentonit terhadap Sifat Permeabilitas dan kekuatan Tekan Basah Cetakan Pasir(Sand Casting),” J. Ilm. Tek.Mesin,vol. 4, no. 2, pp. 132–138, 2010.

J.Choma, L. Osuchowski, M. Marszewski, A. Dziura, and M. Jaroniec, “Developing microporosity in Kevlar®-derived carbon fibers by CO2 activation for CO2 adsorption,” J. CO2 Util., vol. 16, pp. 17–22, Dec. 2016.

D.Koch, “Bentonites as a basic material for technical base liners and site encapsulation cut-off walls,” Appl. Clay Sci., vol. 21, no. 1–2, pp. 1–11, Apr. 2002.

“27,226 Search Results - ALL(BENTONITE) - ScienceDirect.” [Online]. Available: [Accessed: 08-Jun-2017].

“Modelling and optimization of the sound absorption of wood-wool cement boards - ScienceDirect.”[Online].Available: [Accessed: 06-Sep-2017].

C. Lee, S. Park, D. Lee, I.-M. Lee, and H. Choi, “Viscosity and salinity effect on thermal performance of bentonite-based grouts for ground heat exchanger,” Appl. Clay Sci., vol. 101, pp. 455–460, Nov. 2014.

Y. C. Flores, G. C. Cordeiro, R. D. Toledo Filho, and L. M. Tavares, “Performance of Portland cement pastes containing nano-silica and different types of silica,” Constr. Build. Mater., vol.146, pp. 524–530, Aug. 2017.

T. Thyagaraj and D. Soujanya, “Polypropylene fiber reinforced bentonite for waste containment barriers,” Appl. Clay Sci., vol. 142, pp. 153–162, Jun. 2017.

A. Yustres et al., “Comparison of the hydrogeochemical and mechanical behaviours of compacted bentonite using different conceptual approaches,” Appl. Clay Sci., vol. 141, pp. 280–291, Jun. 2017.

G. Barast, A.-R.Razakamanantsoa, I. Djeran-Maigre, T. Nicholson, and D. Williams,“Swelling properties of natural and modified bentonites by rheological description,” Appl. Clay Sci., vol. 142, pp. 60–68, Jun. 2017.

S. Zhao, X. Ding, M. Zhao, C. Li, and S. Pei, “Experimental study on tensile strength development of concrete with manufactured sand,” Constr. Build. Mater., vol. 138, pp. 247–253, May 2017.

M. Nojoomizadeh and A. Karimipour, “The effects of porosity and permeability on fluid flow and heat transfer of multi walled carbon nano-tubes suspended in oil (MWCNT/Oil nano-fluid) in a microchannel filled with a porous medium,” Phys. E Low-Dimens. Syst. Nanostructures, vol. 84, pp. 423–433, Oct. 2016.



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