Recycled Plastic as an Aggregate in Concrete (original) (raw)
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Evaluating the Effect of Adding Sugarcane Bagasse to the Fire Clay Brick's Properties
Civil Engineering and Architecture, 2022
Due to the increase in population density, the waste and its by-products produced by industry, housing, and agriculture have increased. Waste accumulation causes several environmental problems and contaminates natural resources such as air, soil, and water. Moreover, it threatens human public health and increases the number of epidemics and medical pandemics. The percentage of organic waste increases daily. Almost 60% of the waste collected from the housing sector is organic waste, in addition to the agricultural wastes that are also considered organic waste. In developing countries, there are no clear waste management systems. The waste is poorly managed, it is either burned or disposed of in waste dumps improperly. On the other hand, mud bricks are considered a substantial wall building material used in developing countries. This experimental research aims to study the properties of new mud brick prototypes by partially replacing 0.5, 1.5, and 2.5% of the mud with sugarcane bagasse (SCB), which is considered an organic waste material, to create eco-friendly bricks. This research will use an experimental, quantitative method to test the efficiency of the bricks after partially replacing mud with SCB. These experiments will test the slump, strength, cracks, absorption, and density with different SCB replacement percentages. The research revealed that the compressive strength of the mud bricks suffers a considerable reduction due to the burring of the fibers.
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IOP Conference Series: Materials Science and Engineering
In the last few decades there has been speedily increasing in the agriculture and industrial wastes. This causes many environmental issues and raises the potential to contaminate the natural resources of living such as water, air and soil. Recently, the amount of organic waste produced daily has been rising, while it is poorly managed. It is either burned or disposed improperly, which effect negatively the environment and public health. On the other hand, during the cement production process many wastes, and pollutants are generated which have major negative impacts on the environment. Cement is considered as a substantial constituent of building materials in the construction industry. Many research’s intended to explore the potential of utilizing organic waste products in the construction industry by partially replacing cement with organic wastes such as sugarcane bagasse to create an eco-friendly brick with appropriate structure properties. Previous research’s used different treat...
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Sustainability
Recycling is among the best management strategies to avoid dispersion of several types of wastes in the environment. Research in recycling strategies is gaining increased importance in view of Circular Economy principles. The exploitation of waste, or byproducts, as alternative aggregate in concrete, results in a reduction in the exploitation of scarce natural resources. On the other hand, a productive use of waste leads to a reduction in the landfilling of waste material through the transformation of waste into a resource. In this frame of reference, the paper discusses how to use concrete as a container of waste focusing on the waste produced in limestone quarries and taking the challenge of introducing plastic waste into ordinary concrete mixes. To prove the possibility of reaching this objective with acceptable loss of performance, the mechanical characteristics of concrete mixed with additional alternative aggregates classified as waste are investigated and discussed in this pa...
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Characteristic Properties of Concrete with Recycled Burnt Bricks as Coarse Aggregates Replacement
Journal of computional engineering and physical modeling , 2021
To counter the depletion of river sand and to reduce the menace caused by disposal of crushed brick wastes, the use of crushed bricks to produce a more environmentally sustainable and economical concrete is explored. This project studied the properties of concrete made using crushed burnt bricks as an aggregate in comparison with concrete made using natural coarse aggregates. Experimental investigation was carried on the concrete in its wet and dry state to determine the durability and mechanical properties of the concrete by testing the workability, water absorption, density and compressive strength test of the concrete. The result of the water absorption test shows that concretes made using crushed burnt bricks as coarse aggregates absorbed more water with value of 7.83% than conventional concrete with value of 2.83% at 28 days curing. The strength test result carried out indicates that conventional concrete at 28 days has strength of 22.96 N/mm2 higher than that of concretes made using crushed burnt bricks at 28 days of curing with value of 15.45 N/mm2, however, the strength of concretes from crushed burnt bricks still lies within the acceptable limit. Other test carried out on the crushed burnt aggregates to ascertain their suitability were, Aggregates Impact Value test (AIV) with value at 15.68% and Aggregates Crushing Value test (ACV) with value at 23.36%. The properties and quality of the crushed burnt bricks aggregates were also determined.
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Effects of HDPE Plastic Waste Aggregate on the Properties of Concrete
IJRASET, 2021
Polymer waste volumes have surged in recent years as a result of growing industrialization and fast improvements in living standards. In Malaysia, the majority of polymer waste is discarded rather than recycled. This circumstance results in major issues such as waste of natural resources and pollution of the environment. Polymer products, such as synthetic fibres, plastics, and rubber, are petrochemical compounds that disintegrate slowly in nature. Even after a long amount of time, plastic materials are not easily biodegradable. In reality, a wide range of waste materials can be used as a cement matrix inert. For the manufacture of the polymer concrete, trash bag plastics were employed as polymer wastes HDPE in this study (PC). The purpose of this research is to investigate the characteristics and characterisation of polymer HDPE as a coarse aggregate replacement in concrete. Temperatures of 160°C, 170°C, 180°C, 190°C, and 200°C were used in the heating procedure. By volumetric approach, five compositions of coarse aggregate with varied crushed stone: HDPE waste ratios of 0:100, 15:85, 30:70, 45:55, and 60:40 were utilised. The use of polymer waste as coarse aggregate in traditional concrete was examined. With fresh and hardened concrete tests, the effects of polymer wastes on the workability and strength of the concrete were investigated. After 28 days, the compressive strength of the PC was determined to be suitable for nonstructural use. The findings of the cost research revealed that the PC is more cost effective than traditional concrete.
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Civil Engineering and Architecture, 2021
Sustainability of the construction industry is taking a priority worldwide. The objective of this work is to evaluate the contribution of double using of waste clay brick and waste plastic for some properties of high volume metakaolin concrete. Waste brick powder (BP), after grinding, was blended with metakaolin (MK) at (50:50) % by weight, and this blended powder was replaced for ordinary Portland cement (OPC) at ratio (50:50) %. Six mixtures were produced, including one control mixture and five mixes that have a substitution 30% by volume of natural coarse aggregate with different ratios of blended waste clay brick aggregate (BA) and plastic aggregate (PL). The essential focus of the study is to observe density, compressive and splitting strengths of mixtures containing waste aggregate along with their workability in comparison with the control mix. The results showed that inclusion of blended wastes aggregate have adversely effect on the concrete workability, and decline the density at fresh and hardened state. Also, the use of wastes aggregate (blended or solely) has reduced the splitting strength. Moreover, compressive strength of control mix was 38.3 MPa, while mixes with waste aggregate have ranged between 32.9-42.4 MPa. It is, therefore, more beneficial to produce sustainable concrete with moderate strength for variety applications in the construction sector.
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CONSTRUCTION
The concept of utilizing various types of wastes, such as agricultural dumps and marine by-products, as a partial replacement of cement has gained a great interest to develop eco-friendly and economical mortars for sustainable construction. This study aims to evaluate the feasibility of using palm oil fuel ash (POFA), an agro-industrial waste by-product from palm oil mills and seashell powder (SSP) derived from seashells, a marine waste material partial replacement of cement in mortars. The water to binder (w/b) ratio of 0.49 and the sand to binder (s/b) ratio of 2.54 with 0% to 30% of ordinary portland cement (OPC) by weight was replaced with POFA and SSP, and the resulting mortar samples were tested for mechanical properties and durability in this study. The compressive strength, flexural strength, water absorption, and flow table tests were performed in this study for different percentages of POFA and SSP after 7, 28, and 130 days. The results showed that the 30% POFA incorporate...
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Effect of Curing Methods on the Compressive Strengths of Palm Kernel Shell Concrete
Civil Engineering and Architecture, 2021
Appropriate curing of concrete is necessary to obtain maximum durability and achieve designed strength for concrete exposed to different environmental conditions. Curing is regarded as the means of regulating the degree and extent of loss of moisture from concrete when the cement in the concrete is undergoing hydration. This study made a comparative study of the consequence of adopting different methods of curing on the compressive strength of concrete modified with Palm Kernel Shell (PKS) aggregate. Concrete cube specimens of mix ratio 1:1:2 were cast with water-cement ratio of 0.55. The specimens were cured using four (4) different procedures: immersion, sprinkling, wet-curing and open-air. The concrete samples were tested for their compressive strengths at ages 7, 14, 21 and 28 days of curing. The results obtained show that immersion method of curing has the highest compressive strength at 28 days with a value of 17.07 N/mm2. This was followed by the sprinkling method of curing with 15.78 N/mm2. Wet-curing method has a compressive strength of 14.48 N/mm2 and open-air curing has compressive strength of 13.11 N/mm2. It was concluded that immersion and sprinkling methods are suitable methods for curing PKS concrete.
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Sustainability
In this study, the recycled concrete aggregates and powder (RCA and RCP) prepared from basaltic concrete waste were used to replace the natural aggregate (NA) and cement, respectively. The NA (coarse and fine) was replaced by the recycled aggregates with five percentages (0%, 20%, 40%, 60% and 80%). Consequently, the cement was replaced by the RCP with four percentages (0%, 5%, 10% and 20%). Cubes with 100 mm edge length were prepared for all tests. The compressive and tensile strengths (fcu and ftu) and water absorption (WA) were investigated for all mixes at different ages. Partial substitution of NA with recycled aggregate reduced the compressive strength with different percentages depending on the type and source of recycled aggregate. After 28 days, the maximum reduction in fcu value was 9.8% and 9.4% for mixtures with coarse RCA and fine RCA (FRCA), respectively. After 56 days, the mixes with 40% FRCA reached almost the same fcu value as the control mix (M0, 99.5%). Consequent...
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Plastic Tiles from Recycled Pet Bottles Wastes with Improved Strength and Reduced Flammability
Civil Engineering and Architecture, 2021
The cost of construction materials and the required natural resources to produce the materials with the enabling environment is affecting the world's construction industry which is growing at an alarming rate. Also, plastic wastes have posed a major threat to the environment due to their large usage, non-biodegradability nature, and pollution through incineration and landfill. Recycling these wastes into tiles will be a great advantage. This study aims at examining mechanical properties of tile made from PET (Polyethylene Terephthalate) wastes, fly ash, and river sand aggregate. The PET wastes of varying percentages of 100%, 90%, 70%, 50%, and 30% by weight to other aggregates. The evaluation of physical and mechanical properties shows that, in terms of material density, strength, and flammability resistance, the tiles with 30% of the plastic waste yields better results than other proportions of the waste. According to the results obtained, this composite tile has a very low % porosity value (2.8-0.11%) compared to cement or ceramic tiles. Also, the composite tile (PFST1) with 30% and 35% sand and fly ash displayed lower flammability of 7.76mm/min linear burning rate and enhanced compressive strength of 11.10 MPa. The chemical tolerance of these composite tiles was also investigated by soaking in different acid, base, and alkaline for seven days, which has no significant difference in terms of weight and appearance. In conclusion, PET plastic tiles have good strength, decrease flammability, low water absorption, and eco-friendliness as tiles products. This prospect would not only minimize the cost of building products but will also act as a waste diversion to mitigate the environment caused by plastic waste disposal.
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