2.2 Fine Aggregates. The fine aggregate used in this study was natural river sand and locally sourced. Its properties were checked as per IS: 383-2016 and IS: 2386-1963. ... The artificial aggregates were prepared using the cold-bonding method and maintained duration agglomeration for 20 min. The fresh aggregates were air-dried for 1 day to ...
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2) Concerning recycled brick-concrete aggregates, all solid construction waste is recycled. The output ratio is based on the secondary production process investigated by Quattrone [76], wherein the productivity percentages are as follows: 60 % for coarse aggregate, 25 % for medium aggregate, and 15 % for fine aggregate.
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Typical effects of coarse and fine aggregates on the long-term properties of sea sand recycled aggregate concrete (SSRAC) are analyzed by a series of axial compression tests. Two different types of fine (coarse) aggregates are considered: sea sand and river sand (natural and recycled coarse aggregates). Variations in SSRAC …
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Artificial fine aggregates (AFA) is an appropriate construction material which can be produced by thermal processes using raw materials with expansive properties, such as fly ash, sewage sludge, waste bricks or contaminated soil [18].
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Artificial intelligence modeling in 3D printed concrete. Abstract. ... The fine aggregate, OPC, RHC were provided by the agency CIIC (Tianjin) Technology Co., Ltd [54]. The images of the rubber particles, quarry dust, and glass fiber are shown in Fig. 1 (b). For the control mix, only quarry dust was used as the fine aggregates.
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With respect to size, there are two types of lightweight aggregates: coarse aggregates and fine aggregates. LWC may be produced by combining lightweight coarse and fine aggregates. However, it may diminish the concrete's workability. ... diatomite, scoria, and volcanic cinders. Artificial lightweight aggregates include expanded perlite, ed ...
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IS 383:1970 (Reaffirmed 2002) lays the guidelines for coarse and fine natural aggregates. Artificial aggregates are produced from materials that are produced through an artificial process. Examples of artificial aggregates are broken bricks, burnt-clay aggregate, blast furnace slag, and synthetic aggregates. Crushed & Recycled Aggregates
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The pelletization efficiency and the strength of artificial aggregates can be increased by the use of higher fine fractions during the mixing stage. Among the different hardening methods, sintering requires the high content of SiO 2 and Al 2 O 3 in raw materials, while the cold-bonded requires cementitious raw materials and a long curing …
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In this study, we compared the properties of PAE (polyacrylic ester) polymer-modified mortars pre- pared from recycled waste artificial marbles and waste concrete fine aggregates. We used PAE emulsion as a polymer modifier; 30 types of specimens of polymer-modified mortars were prepared by varying the pro- portions of the polymer …
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| Property Artificial Fine Aggregate: In this paper, artificial fine aggregate is totally replaced as fine aggregates which is procured from Hyderabad, with different sizes that passing through 4.75mm, 2.36mm, 1.18mm, 600µ, 300µ and 150µ. The properties of Artificial Fine Aggregate are shown in Table 2.
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1. Introduction. The past few decades have witnessed the rapid development of urbanization and the construction industry all around the world, which has led to enormous consumption of natural resources, especially natural aggregates for concrete production (Qian et al., 2022a; Xu et al., 2021).Coarse and fine aggregates account for …
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Given the pollution of waste concrete powder, low utilization rate, sand and stone resources shortage, and poor performance of artificial aggregate, the high …
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Particle packing density mainly influences the behavior of concrete. Experimental determination of particle packing density is arduous and time-consuming. Thus, artificial neural network (ANN) is a tool that helps in determining particle packing density faster and accurately. ANN is used to predict the properties of the concrete with …
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Aggregate may be categorized into natural aggregate, such as sand, gravel, and crushed stone; and manufactured aggregate, such as slag, recycled concrete, and artificial aggregates. The term granular is also used to refer to the particulate material that contains any types of aggregate that may contain up to 35% particles passing the 75 μm (No ...
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Considering the above-mentioned concerns, turning unutilized wastes into artificial aggregates for use in concrete has become a worthy topic. Currently, the common manufacturing methods of artificial aggregates include cold bonding and sintering (Bijen, 1986).The cold bonding method typically utilizes cementitious materials …
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1. Introduction. Natural crushed rocks or stones are commonly used as coarse aggregates in the production of concrete. Various types of natural rocks (e.g., limestone [], basalt [], and gravel []) have been employed in the concrete industry based on local geological circumstances.However, increasing construction demand and rapid …
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Artificial aggregates for concrete; Artificial aggregates, or man-made aggregates, are either a thermally-processed material or an industrial by-product. Thermally processed aggregates include expanded clay, shale, and perlite. ... Fine aggregates have a particle size ranging from 4.75 to 0.075 millimeters. The content of …
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The prepared aggregates are characterised based on their crushing and impact strength rate and also moisture absorption. This paper explicitly reviews various …
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There is a growing need to find ways to reuse fine concrete waste from the construction industry. In this study, recycled concrete fines were granulated and used as lightweight aggregates. Ladle slag, a steel industry residue, was used as a co-binder in different ratios (0, 10, 20, and 30%). The materials were blended and granulated, and …
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waste artificial marble fine aggregates. As for the air contents entrained at 50 % of the substitute content of the Figure 2. Variation of air content vs. replacement ratios of recycled fine aggregates. waste artificial marble fine aggregate, the air content of the fresh mortar without the polymer modifier was 16.4
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This study explores the use of artificial lightweight fine aggregate (ALWFA) as a substitute for fine aggregate in UHPLC production, investigating both fresh properties and mechanical performance. Microstructure analysis, utilizing SEM, and crystalline phase evaluation, employing XRD, were also conducted.
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Similar to the case of fine aggregates, the artificial coarse aggregates had significantly smaller specific gravities (1.15–1.25) and notably larger water absorption rates (33.3–47.6%) than gravel. The fineness modulus of artificial coarse aggregates (6.5) was similar to that used gravel (6.8). The saturated-surface-dried bulk density of ...
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The recycled aggregate is an alternative with great potential to replace the conventional concrete alongside with other benefits such as minimising the usage of natural resources in exploitation to produce new conventional concrete. Eventually, this will lead to reducing the construction waste, carbon footprints and energy consumption. This paper aims to study …
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The activator to precursor ratio was 0.08 and the water to precursor ratio was 0.30 by weight to produce artificial geopolymer fine aggregates. In terms of casting methods, one-part geopolymer mixing approach was adopted to maximize the feasibility of industrialization [32]. During the mixing, FA and solid activator were dry-mixed for the …
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Fine aggregates are essential in producing high-quality concrete for various construction projects, including residential buildings, bridges, and pavements. Coarse Aggregate. Coarse aggregates are retained on a 4.75mm sieve and typically include materials such as gravel, cobble, and boulders. The choice of maximum aggregate size …
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The study concludes that artificial aggregates may efficiently replace natural coarse aggregate in the production of structural concrete, bringing numerous advantages in …
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Nowadays, producing artificial aggregates, usually LWA from FA, has been vital in disposing industrial by-products. Commonly, aggregate occupies about 70% of the total concrete matrix. ... As coarse and fine aggregates, normal density crushed limestone (NC), having a density of 2.72 g/cm 3, and local river sand (NS), with a density of 2.55 …
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The coarse aggregates (CA) used were limestones with a continuous gradation of 5–25 mm, and the fine aggregates (S) were ordinary river sands given a 2.40 fineness modulus, which were obtained from local manufactures. In addition, the shale ceramsite, an artificial LWFA given a density of 834 kg/m 3 was utilized in this study. It …
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Despite M-Fine's low reactivity compared to SF, it may produce strength and durability characteristics comparable to other conventional supplementary cementitious materials like GGBS. In structural concrete, optimized-quality recycled concrete aggregates with supplementary cementitious materials, including M-Fines, can be used.
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Artificial fine aggregates with the particle size smaller than 4.75 mm were used for casting ECC. In order to keep the artificial fine aggregate sizes as the same, the particle size distributions of GPA and CBA were sieved and re-grouped to the targeted value (Table 4). FSS-ECC was also
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The most important function of the fine aggregate is to assist in producing the workability and uniformity in mixture. The aggregates provide about 75% of the body of the concrete and hence its influence is extremely important. ... It has poor resistance to wear and hence is not used in concrete for the road work. Fig. Artificial Aggregate 8.
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The experiments showed that replacing 30% artificial fine aggregate for natural fine aggregate produced the maximum strength and lowest crack area. Studies led to these conclusions. Concrete cubes with 15 mm sides and 150 mm lengths were tested for compressive strength. After 28 days in the ground, the concrete was tested to …
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