Influence of Using Waste Materials as Partial Replacement of Coarse …
Coconut shell is a form of agricultural solid waste with possible use as coarse aggregate in the production of concrete. India occupies the premier position in the world in coconut production with an annual production of 13 billion nuts, followed by Indonesia and Philippines. ... Jain et al. studied the effect of replacement of coarse …
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Construction and demolition waste as recycled aggregate …
Recycled aggregates (RA) from construction and demolition waste (CDW) instead of natural aggregates (NA) were analysed in the manufacture of new eco-friendly concrete. Fine (FRA) and coarse (CRA) recycled aggregates were used in different percentages as substitutes of natural sand and gravel, respectively. The results revealed …
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Concrete | MIT Climate Portal
Concrete is a mix of several different materials: water, fine aggregates (or sand), coarse aggregates (or gravel), chemical additives, and, most importantly, cement. Cement is what binds all of these ingredients together to give concrete its durability and distinctive, grey appearance. Cement production, however, also generates most of …
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Effects of coarse aggregate morphology on concrete …
The coarse aggregate composition is designed based on the SCD as shown in Table 4, and then the ternary diagram can be determined as illustrated in Fig. 3.There are 21-type samples in total and six 100 × 100 × 100 mm 3 cubic specimens are prepared for each type specimen. The concrete samples were demolded after 24 h and then cured at …
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Waste Rubber Tires: A Partial Replacement for Coarse …
possible to use recycled rubber tires in concrete tile production as a partial replacement for coarse aggregates. Nevertheless, the percentage of replacement should be limited to 10%.
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Enhancing concrete performance: Surface …
Abstract. In this study, the researchers introduce an innovative method to enhance the utilization of recycled coarse aggregates (RCA) derived from construction …
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Feasibility study on impact of replacement of river sand with …
The research findings revealed that the distinctive surface qualities of crushed sand facilitate the production of high-strength concrete exhibiting an impressive slump range of 18.5 to 22 cm. remarkably, concrete samples exhibited commendable compressive strengths ranging between 114 and 122 MPa and 138 to 150 MPa at the 7 …
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Properties of concrete made with crushed concrete as coarse aggregate
The effects of using recycled concrete aggregates instead of natural aggregates in concrete are: reduction in compressive strength up to 25%; reduction in modulus of elasticity up to 30% ...
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Impact of waste ceramic tiles as partial replacement of fine and coarse
Sixteen concrete mixes were cast, including a control concrete mix (CC) and fifteen recycled concrete mixes, all of which used ceramic fine aggregates (FCA) concrete: FCA1, FCA2, FCA3, FCA4, FCA5 for sand replacements and ceramic coarse aggregate (CCA) concrete; and CCA1, CCA2, CCA3, CCA4, CCA5 for coarse …
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The Production of Sustainable Concrete with the Use of …
The concrete industry is a core element of the building sector, but it has to deal with the increasing attention on the environmental issues related to the production process: increasing energy efficiency and the adoption of alternative fuels or raw materials represent the most relevant solutions. The present work analyses physical, mechanical, …
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Partial Replacement of Sand with Sawdust in …
This study investigated the use of sawdust as partial replacement. for fine aggregates in concrete production. Sawdust was used to replace fine aggregates from 0% to. 50% in steps of 10%. …
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How Coarse Aggregate Affects Mix Design of …
Coarse aggregate is one of the essential components of concrete and occupies the largest volume in the mix. That is why it greatly affects the concrete mix design. Its properties such as strength, maximum size, shape, and water absorption influence water demand, the …
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The Effects of Aggregate Properties on Concrete Mix …
This article reviews the literature on the effects of coarse aggregate type on the mix design of concrete. Key parameters are identified, and a chart is plotted to help …
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The Effects of Aggregate Properties on Concrete Mix …
2.1 Physical Properties of Coarse Aggregates 2.1.1 Gradation. Particle size distribution of aggregates significantly affect the packing density and void content in concrete. According to Neville [], the gradation of aggregate has the main role in establishing the workability of mixtures.Gradation can influence workability, segregation, …
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Production of Artificial Aggregates and Their Impact on
The concrete mix was designed for M30 grade by replacing natural coarse aggregates with FAA by 30, 50, and 70%. Table 5 shows the mix proportions obtained for concrete of different replacements. According to the mix design, the ingredients were mixed and cast into 0.15 × 0.15 × 0.15 m cubes, cylinders of 0.15 m diameter and 0.30 m …
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Assessment of Quality of Sand Sources and the Effect on the …
Use of poor-quality construction materials (such as sand, coarse aggregates or water) results in poor quality structures and may cause structural failures leading to injuries, deaths and loss of investment for developers [3, 5]. Fine and coarse aggregates make about 70% by volume of concrete production.
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AN EXPERIMENTAL INVESTIGATION USING RECYCLED COARSE AGGREGATE …
The coarse aggregate replacement was carried out in four different percentages with 0%, 25%, 50% and 75% in concrete where the specimens were cured for the period of 7 and 28 days.
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Effects of aggregate sizes on the performance of …
This research aims to validate and extend these findings, evaluating the impact of diferent aggregate sizes (12 mm, 20 mm, and 40 mm) on the strength of concrete with 10% and 25% laterite ...
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The effects of limestone aggregate on concrete properties
The total of aggregates produced in 2008 by weight was 69% limestone and dolomite, 15% granite, 7% traprock and 9% miscellaneous stones consisted of sandstone and quartzite, marble, volcanic cinder and scoria, slate, shell, and calcareous marl as shown in Fig. 1.By 2020, US production of crushed limestone is expected to increase by …
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Impact of waste ceramic tiles as partial replacement of fine and coarse
Under the concept the properties of conventional coarse aggregate and ceramic waste were mapped from which test results indicate that compressive strength and the split tensile strength of ...
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Environmental Impact and Sustainability of Aggregate Production in
The production of aggregate for the infrastructural development of the country has been increasing for the last three decades due to the high urbanization rates in the main cities of the country and the ever-growing demand for basic infrastructural facilities. The environmental impact of both fine and coarse aggregate production is now hard …
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Steel slag and its applications in cement and concrete …
Use of steel Slag as coarse and fine aggregate in concrete was presented. ... When the environmental effects during the production of such materials are considered, the use of industrial wastes draws attention as the most important and effective solution. ... [64] prepared 6 different mixtures using natural sand at ratios of 0–60% and steel ...
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Utilization Of Corn Cob As A Partial Replacement Of Coarse Aggregate …
To implement such ventures concrete must be used which require a n. immense quantity of non-renewable resources such as Fine aggregates, Coarse. aggregate, and Cement. Corn is one of the widely ...
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(PDF) Recycled aggregates in concrete production: …
The present paper discusses the various possible recycled aggregates used in concrete production, their effect on both fresh and hardened properties as well as durability performances. The ...
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Environmental impacts and decarbonization strategies in …
Although sand and gravel can be considered locally as critical resources 43, it is possible to reduce the impact of concrete production on ecosystems by using secondary or non-depleted bulk local ...
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Coconut (Cocos nucifera L.) Waste as Partial Coarse Aggregate
Concrete hollow block is a vital component in construction industry because of its affordability, strength, and convenience. However, the excavation of conventional coarse aggregates devastates ...
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Aggregates for Concrete
3.9.2—Effects of harmful substances 3.9.3—Test methods Chapter 4—Sampling aggregates, p. E1-20 ... A typical consensus specification for fine and coarse aggregate …
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Using Recycled Concrete as a Replacement for Coarse Aggregate …
Hebhoub et al. (), using the marble waste in the concrete manufacturing solves this problem environmentally and economically, especially with a 75% replacement value -of any formulation- under constant water to cement ratio.The use of the marble waste as replacement for coarse and fine aggregate separately or together leads to an …
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Effect of coarse aggregates and sand contents on …
Effect of coarse aggregates and sand contents on workability and static stability of self-compacting concrete. Sahraoui Mohameda and Bouziani Tayeb . Structures …
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Material and structural properties of recycled coarse aggregate
The current specifications for RAC in structural engineering primarily focus on the application of RAC prepared with RCA, with limited attention given to the use of recycled fine aggregate [9].The utilization of recycled fine aggregate is restricted due to its lower quality compared to river sand, resulting in decreased workability and mechanical …
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