This study investigates the potential of incorporating recycled fine aggregates (RFA) into sustainable concrete. In this research, a conventional compaction technique is utilized to establish the order of compressive strength and, consequently, to assess particle packing density in terms of weight within a specific cylindrical volume …

In this study, four samples of recycled aggregates from the construction and demolition waste of Mexico City were characterized in order to find innovative uses for these types of materials. Gravel and …

PO 42.5 cement, fine sand, and coarse aggregate are used to prepare phase-change concrete. The mixing ratio of concrete was calculated according to the "Specification for mix proportion design of ordinary concrete" [27]. The mass ratio of PO 42.5 cement, fine sand, coarse aggregate, and water is 19.6 %: 27.6 %: 43.2 %: 9.6 %.

To enhance forestry solid waste reuse, reduce building energy consumption, and increase building capacity, producing lightweight concrete with new materials has garnered recent attention. This study used waste wood and expanded perlite (EP) to design lightweight thermal insulation recycled concrete (LTIRC) with varying volume …

T1 - Physical, chemical and mineralogical characterization of Dutch fine recycled concrete aggregates. T2 - A comparative study. AU - Nedeljković, Marija. AU - Visser, Jeanette. AU - Nijland, Timo G. AU - Valcke, Siska. AU - Schlangen, Erik. PY - 2021. Y1 - …

Microstructural Characterization of Concrete Prepared with Recycled Aggregates Mafalda Guedes, 1,2, * Luís Evangelista, 3,4 Jorge de Brito, 4,5 and Alberto C. Ferro 2,6 1 Department of Mechanical Engineering, la Superior de Tecnologia de Setúbal, Instituto Politécnico de Setúbal, 2910-761 Setúbal, Portugal 2 ICEMS, Instituto Superior Técnico, …

Physical characterization shows that recycled concrete aggregate has better physical properties compared with mixed recycled aggregate and ceramic recycled aggregate, which makes it more suitable ...

Quality Counts. Make sure that your concrete producer purchases good-quality aggregate as verified by regular aggregate test results in compliance with ASTM C 33, "Standard Specifications for Concrete Aggregates." A history of good performance of a local aggregate also provides an indication of how well the material performs in service.

Shape characteristics of fine aggregates with different origins but in similar size ranges are revealed by this study. Compared with coarse aggregate, fine grains of different origins generally have similar shape differences. ... Hu J, Stroeven P (2006). Shape characterization of concrete aggregate. Image Anal Stereol 25:43-53. …

The other property that differs greatly relative to fine natural aggregates. Conclusions. In this work the physical and chemical properties relevant for the incorporation of aggregates in concrete were determined in 10 samples of fine aggregates from CDW obtained from seven Portuguese plants located in various geographical and geological …

The Chemical-Mineralogical Characterization of Recycled Concrete Aggregates from Different Sources and Their Potential Reactions in Asphalt Mixtures ... Jorge D.B. Physical–chemical and mineralogical characterization of fine aggregates from construction and demolition waste recycling plants. J. Clean. Prod. 2013; 52:438–445. …

There has been increasing interest in using manufactured sand (MS) as fine aggregate for concrete to overcome the increasing deficiency in river sand and thus alleviate the environmental problems ...

Recycled aggregate performance vary with different native concrete strength and use environment. Recycled fine aggregate was obtained after the primary concrete was broken and screened. According to Recycled coarse aggregate for concrete and mortar (GB/T 25176-2010), the physical properties of the different types of recycled …

The typical size range for fine aggregate is defined by the ASTM C33 standard, which sets the limits for the different sieve sizes used in the sieve analysis of …

1. Introduction. Concrete is the most used construction material, with estimated annual production of 10 billion cubic meters [1].Since 60–80% of the concrete volume is taken by aggregates, the overall consumption of natural aggregates (sand and gravel) is very high, generating huge pressure on surrounding ecosystems [2].The …

1. Introduction. Concrete is the most used construction material, with estimated annual production of 10 billion cubic meters [1].Since 60–80% of the concrete …

This study aims to develop high strength rubberized concrete by utilizing large amounts of fine materials and replacing 15% and 25% of the natural aggregates by volume with a well graded mix of ...

The linchpin of this study was on the mechanical and physical performance of concrete properties incorporated with coconut shell as a partial replacement for fine aggregate. Concrete incorporated with 10%, 20% and 30% volume fraction replacements for fine aggregate was designed for target strength of 35 MPa to note percentage …

There are two different types of aggregate, they are coarse aggregate and fine aggregate. Coarse aggregates are usually greater than 4.75 mm in size, while fine aggregates are generally lesser ...

Title: Characterization of Iron Ore Tailings as Fine Aggregate Author(s): Sikiru Folahan Oritola, Abdul Latif Saleh, and Abdul Rahman Mohd Sam Publication: Materials Journal Volume: 117 Issue: 2 Appears on pages(s): 125-134 Keywords: concrete-making material; fine aggregate; iron ore tailings; microscopy of material; …

Fan, C. C., R. Huang, H. Hwang, and S. J. Chao. 2015. "The effects of different fine recycled concrete aggregates on the properties of Mortar." ... Physical-chemical and mineralogical characterization of fine aggregates from construction and demolition waste recycling plants." ... and their applications as fine aggregates for …

The maximum resolution of this system is similar as the 500 Nano system. Based on the combination of high-quality optical components and sophisticated IA software, these two systems are all suitable for fine powder materials. Both size and shape of two type of …

Finally, the effects of recycled fine aggregate, recycled coarse aggregate, and steel fibers on the shear behavior of the concrete beams were severally quantified by the linear equations, and a ...

1. Introduction. In recent years, concrete made with recycled materials has been widely used for civil infrastructure for promoting sustainability and circular economy [1], [2], [3], [4].As a solid waste from steel making, steel slag can be recycled to replace natural aggregates in concrete, making an environmentally friendly construction …

Mousavimehr M, Nematzadeh M (2019) Predicting post-fire behavior of crumb rubber aggregate concrete. Constr Build Mater 229:116834. Article Google Scholar Nagarajan Prasad N, Sudha J, Diwahar A (2020) WITHDRAWN: an exploratory analysis on prejudice substitute of fine aggregate by glass powder and crumbed rubber on M30 …

The incorporation of a recycled concrete aggregate (RCA) as a replacement of natural aggregates (NA) in road construction has been the subject of recent research. This tendency promotes sustainability, but its use depends mainly on the final product's properties, such as chemical stability. This stu …

The test confects C20, C25, C30, C35 and C40 recycled aggregate concrete, and the percentage of recycled aggregate are 0%, 20%, 30%, 50%, 70% and ,the test age of sample are 7d,28d and 56d ...

Ultra-high performance concrete (UHPC) mixtures are typically developed using fine aggregate with a maximum size of 600 μm. From a sustainability point of …

Natural disasters and human demolition create vast amounts of construction and demolition waste (CDW), with a substantial portion being concrete waste. Managing this concrete waste is a daunting challenge for developing countries with limited resources, aiming to mitigate its harmful environmental effects. Therefore, the proposed approach …

Being its major component, aggregate can occupy up to three-quarter of the volume of concrete. The structure of aggregate formed in hardened state impacts …