Utilization of Stone Industry Waste as Filler for Sustainable Development of Aluminum Alloy Composites: A Thermo-Mechanical and Mechanical Characterizations

Author(s):  
Vikash Gautam ◽  
Amar Patnaik ◽  
I. K. Bhat
2019 ◽  
Vol 7 (2) ◽  
pp. 311-331
Author(s):  
Linda Pulungan ◽  
Siti Sunendiari ◽  
Yunus Ashari ◽  
Zaenal Zaenal

Abstract.Padalarang is located in Cipatat District, Bandung Regency, known as the largest limestone producing area in Indonesia. Limestone mining activities and processing industries are very potential, starting from the marble stone industry, quicklime industry (CaO) to calcium oxide industry (Ca(OH)2). One product of limestone processing is calcium lime (CaO), the result of the calcination process of limestone, on burning limestone that requires large heat. The combustion activities in the majority of the limestone industrial using traditional technology use upright stoves with an open burning combustion system. The fuel used is textile industry waste, shoe industry plus wood waste. The pilot activity of the application of upright furnace limestone combustion technology is a periodically upright combustion system with fuels that have high calorific value, coal and wood. The purpose of mixing this fuel is to use available wood and coal having high calories. This activity also provides education about limestone combustion systems using coal and wood.The application of limestone combustion technology using mixed fuels of coal and wood produces quality limestone with dry conditions with an average combustion temperature of 93.75 oC and compared to using wood fuels and industrial waste produces limestone in dry moist conditions 86.33 oC.Abstrak. Kegiatan pertambangan batu gamping di Kecamatan Cipatat Kabupaten Bandung industri pengolahannya sangat potensil, mulai dari industri batu marmer, industri kapur tohor (CaO) hingga industri kapur padam (Ca(OH)2). Produk dari pengolahan batu gamping adalah kapur tohor (CaO), hasil proses kalsinasi batu kapur. pada pembakaran batu gamping yang membutuhkan panas yang besar. Kegiatan pembakaran pada pabrik-pabrik industri kapur tohor mayoritas menggunakan teknologi tradisional menggunakan tungku tegak dengan sitem pembakaran open burning. Bahan bakar yang dipakai  adalah  limbah industri tekstil, limbah industri sepatu ditambah kayu.  Kegiatan percontohan penerapan teknologi pembakaran batu kapur tungku tegak sistem pembakaran tegak berkala dengan bahan bakar yang mempunyai nilai kalori tinggi yaitu batubara dan kayu. Tujuan mencampur bahan bakar ini memanfaatkan kayu bahan bakar  yang tersedia dan batubara mempunyai kalori tinggi. Kegiatan ini juga memberikan edukasi tentang sistem pembakaran batu kapur menggunakan batubara dan kayu.Kegiatan penerapan teknologi  pembakaran batu kapur dengan menggunakan bahan bakar campuran batubara dan kayu menghasilkan batu kapur berkualitas dengan kondisi kering suhu pembakaran rata-rata 93,75 oC dan dibandingkan dengan menggunakan bahan bakar kayu dan limbah industri  menghasilkan batu kapur kondisi kering lembab suhu pembakaran 86,33 oC. 


2012 ◽  
Vol 2290 (1) ◽  
pp. 122-129 ◽  
Author(s):  
Mohamed H. Rashwan ◽  
Mohamed Nagib Abou-Zeid

Scarcity of nonrenewable natural resources is stipulating the adoption of global sustainable approaches to ensure better utilization of resources. Abrasion mechanisms take place on concrete surfaces, such as pavements and hydraulic structures, as a result of mechanical wear, scour, erosion, and cavitation. Adequate attention has not been paid to the incorporation of coarse aggregate by-products from the stone industry in concrete used for building transportation infrastructures. This paper evaluates the performance of concrete mixtures that incorporate coarse aggregate by-products of the stone industry for their resistance to abrasion. Twenty-four concrete mixtures were prepared with two types of granite and one type of basalt coarse aggregates procured from the waste of stone processing factories in Egypt. Two coarse aggregate sizes were used: 9.5 and 19 mm. The three mixture sets were compared to a control set prepared with dolomite as coarse aggregate. Fresh and hardened concrete tests as well as two abrasion tests were conducted to evaluate mechanical wear and underwater abrasion resistance of the concrete. The results revealed that the stone by-products were suitable for concrete used in highly abrasive environments. Some mixtures, such as the one made with gray granite, had superior strength as well as enhanced abrasion resistance. Such by-products are underutilized by the applicators. It is recommended that this work be further pursued on a wider scale with greater focus on economical and environmental merits as well as other long-term properties.


Author(s):  
G. G. Shaw

The morphology and composition of the fiber-matrix interface can best be studied by transmission electron microscopy and electron diffraction. For some composites satisfactory samples can be prepared by electropolishing. For others such as aluminum alloy-boron composites ion erosion is necessary.When one wishes to examine a specimen with the electron beam perpendicular to the fiber, preparation is as follows: A 1/8 in. disk is cut from the sample with a cylindrical tool by spark machining. Thin slices, 5 mils thick, containing one row of fibers, are then, spark-machined from the disk. After spark machining, the slice is carefully polished with diamond paste until the row of fibers is exposed on each side, as shown in Figure 1.In the case where examination is desired with the electron beam parallel to the fiber, preparation is as follows: Experimental composites are usually 50 mils or less in thickness so an auxiliary holder is necessary during ion milling and for easy transfer to the electron microscope. This holder is pure aluminum sheet, 3 mils thick.


Author(s):  
Peter Orebech ◽  
Fred Bosselman ◽  
Jes Bjarup ◽  
David Callies ◽  
Martin Chanock ◽  
...  

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