THE USE OF WASTE MATERIALS AND BY-PRODUCTS IN LIGHTWEIGHT CONCRETE

2005 ◽  
pp. 261-268 ◽  
Author(s):  
H Szilagyi ◽  
A Mircea ◽  
Z Kiss
Keyword(s):  
Lightweight Concrete ◽  
Waste Materials ◽  
By Products

scholarly journals Using waste materials and by-products to produce concrete paving blocks

2015 ◽  
Vol 77 ◽  
pp. 270-275 ◽  
Author(s):  
Eshmaiel Ganjian ◽  
Ghassan Jalull ◽  
Homayoon Sadeghi-Pouya
Keyword(s):  
Waste Materials ◽  
By Products

scholarly journals Energy Performance Assessment of Waste Materials for Buildings in Extreme Cold and Hot Conditions

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3131 ◽  
Author(s):  
Yasir Rashid ◽  
Fadi Alnaimat ◽  
Bobby Mathew
Keyword(s):  
Date Palm ◽  
Concrete Block ◽  
Climatic Conditions ◽  
Expanded Polystyrene ◽  
Waste Materials ◽  
Geopolymer Concrete ◽  
Polystyrene Foam ◽  
Expanded Polystyrene Foam ◽  
Rubber Tire ◽  
By Products

In this article, thermal performance of different waste materials and by-products of industrial processes is investigated experimentally. A geopolymer concrete block with 7.5 cm thickness and cross-sectional area of 5 × 5 cm was considered as a reference model to measure heat transmission across the two opposite surfaces while all four remnant surfaces were perfectly insulated. For all other samples, a sandwich concrete block was developed by taking two pieces of the geopolymer concrete with 2.5 cm thickness each on either side and insulation material of 2.5 cm thickness in between. The sandwich materials investigated were air cavity, expanded polystyrene foam, polyurethane foam, rubber tire, date palm, PCM-30, and PCM-42. Experimental investigations revealed that the investigated green materials and industrial by-products have comparable insulation performance with respect to the traditional insulations such as expanded polystyrene foam. It is found that polyurethane foam and date palm can reduce indoor cooling demand by 46.6% each in hot conditions while rubber tire can reduce indoor heating demand by 59.2% in cold climatic conditions at the maximum. The research results confirm and encourage the effective utilization of waste materials in building walls for reducing indoor air-conditioning demand in the extreme climatic conditions.

Dairy Waste Treatment and Utilization

2020 ◽  
pp. 160-182
Author(s):  
Anum Ishaq ◽  
Ubaid ur Rahman ◽  
Muhammad Haseeb Ahmad ◽  
Amna Sahar ◽  
Qamar Abbas Syed ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Waste Treatment ◽  
Dairy Industry ◽  
Waste Materials ◽  
Organic Substances ◽  
Proper Treatment ◽  
Aquatic Resources ◽  
Waste Products ◽  
Dairy Waste ◽  
By Products

The dairy industry produces waste materials and by-products including soluble and suspended organic substances, wastewater, suspended solids, and whey. These substances contain significant amounts of organic and inorganic toxins that can cause serious health threats if not treated properly. Additionally, toxins produced by dairy waste would negatively affect the environment as well as quality and availability of aquatic resources. However, these waste materials and by-products can be utilized in different ways after proper treatment and processing. This chapter will provide an overview of waste products of dairy industries and highlight different treatments and utilization of these by-products in other industries.

Waste materials and by-products as mineral fillers in asphalt mixtures

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Eman W. Tarbay ◽  
Abdelhalim M. Azam ◽  
Sherif M. El-Badawy
Keyword(s):  
Asphalt Mixtures ◽  
Waste Materials ◽  
Mineral Fillers ◽  
By Products

scholarly journals By-products of fruits processing as a source of phytochemicals

2009 ◽  
Vol 15 (4) ◽  
pp. 191-202 ◽  
Author(s):  
Sonja Djilas ◽  
Jasna Canadanovic-Brunet ◽  
Gordana Cetkovic
Keyword(s):  
Organic Acid ◽  
Dietary Fibre ◽  
Nutritional Value ◽  
Food Additives ◽  
Waste Materials ◽  
Citrus Fruits ◽  
Wide Range ◽  
Legal Restrictions ◽  
Valuable Compounds ◽  
By Products

The processing of fruits results in high amounts of waste materials such as peels, seeds, stones, and oilseed meals. A disposal of these materials usually represents a problem that is further aggravated by legal restrictions. Thus new aspects concerning the use of these wastes as by-products for further exploitation on the production of food additives or supplements with high nutritional value have gained increasing interest because these are high-value products and their recovery may be economically attractive. It is well known that by-products represent an important source of sugars, minerals, organic acid, dietary fibre and phenolics which have a wide range of action which includes antitumoral, antiviral, antibacterial, cardioprotective and antimutagenic activities. This review discusses the potential of the most important by-products of apple, grape and citrus fruits processing as a source of valuable compounds. The relevance of this topic is illustrated by a number of references.

scholarly journals Kontribusi Produksi Cellular Lightweight Concrete Serat Limbah Pelepah Kelapa Ssawit Terhadap Emisi CO2

2019 ◽  
Vol 6 (2) ◽  
pp. 104
Author(s):  
Zainuri Zainuri ◽  
Sujianto Sujianto ◽  
Adrianto Ahmad ◽  
Feliatra Feliatra
Keyword(s):  
Co2 Emissions ◽  
Palm Oil ◽  
Oil Palm ◽  
Experimental Approach ◽  
Lightweight Concrete ◽  
Global Climate ◽  
Palm Fruit ◽  
Reduction Of Co2 ◽  
Palm Fronds ◽  
By Products

The vast palm oil plantations in Riau province which are 2,430,500 hectares (BPS Indonesia, 2017) have great potential as a provider of CPO (Crude Palm Oil) and other by-products and include waste. The midrib is always lowered along with the decrease in oil palm fruit bunches at harvest. Handling of waste from the midrib is only by stacking it in the field and letting it dry and self-destruct. Oil palm midribs are still a problem today because they can affect the global climate with greenhouse gas emissions. Carbon emissions can still be minimized by utilizing oil palm midribs. This study aims to measure the reduction of CO2 emissions as an added ingredient in the production of fiber CLC. Presentation of research results using descriptive methods. Research conducted in laboratories with an experimental approach is quantitative. The findings of this study are that the use of oil palm fronds as an added ingredient in producing CLC of solar and electric fuel fibers by 1 m3 can reduce CO2 emissions. The conclusion of this study is that CO2 emissions that can be reduced in the manufacture of 1 m3 of fiber CLC using diesel fuel is 111,582 tons/year and when using an electrically driven engine the CO2 emissions that can be reduced are 120.887 tons/year.

scholarly journals Utilization of Sustainable Materials to Enhance Geotechnical Characteristics of Soils

2018 ◽  
Vol 7 (2.1) ◽  
pp. 54
Author(s):  
Rama Subba Rao, G.V
Keyword(s):  
Rice Husk ◽  
Soil Stabilization ◽  
Rice Husk Ash ◽  
Geotechnical Engineering ◽  
Fine Sand ◽  
Waste Materials ◽  
Engineering Practice ◽  
Geotechnical Characteristics ◽  
Sustainable Materials ◽  
By Products

Geotechnical engineering can noticeably affect the sustainability of infrastructure development because of its beginning place in the construction practice. Utilization of waste materials for enhancing properties of the soil is a wise choice and is also one step towards accomplishing sustainable development. Application of by-products (viz., flay ash and rice husk ash) which could be defined as “sustainable materials”, find special place in the modern-day soil stabilization and modification exercise. The preset paper aims at enhancing properties of expansive soil with inclusion of industrial by-products namely Rice Husk ash and Fly Ash. Further the present paper focuses on improving geotechnical characteristics of fine sand upon reinforcing with ground shredded rubber tire. Fine sand has a low angle of internal friction and which in turn has low shear strength. Reuse of waste materials is one area of research which attempts to makes geotechnical engineering practice sustainable.  

Alternative, Environmentally Acceptable Materials in Road Construction

2015 ◽  
pp. 318-348
Author(s):  
Sanja Dimter ◽  
Tatjana Rukavina ◽  
Ivana Barišić
Keyword(s):  
Sustainable Development ◽  
Natural Resources ◽  
Energy Savings ◽  
Road Construction ◽  
Environmental Conservation ◽  
Waste Materials ◽  
Construction Costs ◽  
Alternative Materials ◽  
Economic Perspectives ◽  
By Products

Environmental conservation and energy savings, as the fundamental assumptions for sustainable development, and financial savings are possible through the use of new, non-standard materials and technologies in the building and maintenance of roads. Different types of waste materials and industrial by-products may be used in road construction as an alternative to standard materials. In order to be applicable, alternative materials must meet certain engineering characteristics, show an acceptable level of execution, and be economical in comparison with traditional materials. The reasons for the use of alternative materials are many and largely outweigh the possible shortcomings. The use of alternative materials is significant from both the ecological and economic perspectives. Ecologically, the use of alternative materials means a lesser need for the exploitation of natural resources and the quantity of waste accumulated in landfills is reduced. Economically, the use of alternative materials reduces total construction costs. This chapter explores the use of alternative materials.

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