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201785 · Concrete is a mixture of hydraulic cement, aggregates, and water, with or without admixtures, fibers, or other cementi-tious materials. Aggregates are granular materials such as sand, gravel, crushed stone, crushed hydraulic-cement concrete, or iron blast-furnace slag. Coarse aggregate is that portion retained on the 4.75 mm (No. 4) sieve.
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2013329 · This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale impact of RCA on structural members. The review study yielded the following findings in regards to concrete material properties: (1) replacing NA in concrete with RCA decreases the compressive strength, but yields …
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1 · 5. Size and Shape. The size of aggregates less than 4.75mm is called fine aggregate and beyond 4.75mm is called coarse aggregates. The size and shape of the aggregates impact the strength and durability of the concrete. The workability of concrete might be affected when using large size aggregates.
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202341 · In-depth understandings of concrete fracture mechanisms and how aggregates influence the behaviours of concretes are crucial to applications. This paper highlights a systematic investigation on the effects of aggregate size and volume fraction on concrete fracture and mechanical behaviours by means of discrete element modelling …
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201121 · The porosity of recycled aggregate concrete (RAC) is generally higher than that of natural aggregate concrete (NAC) due to the adhered mortar present in recycled aggregates [12]. The porosity and the pore size distribution are the most important characteristics of the pore system of concrete which influence the ingress of foreign …
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2015130 · The direct algorithms can take into account key multi-phasic parameters such as the shape, size, gradation and spatial distribution of pores and aggregates, phase volume fractions and aggregate–mortar interfaces, and their effects on mechanical behaviour of specimens.
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202074 · In this article, we will discuss be discussing “What Is Aggregate”, “Properties Of Aggregates”, “Aggregate Concrete”, “Gravel Size Chart” and the different sources of aggregates available and commonly used operations performed at aggregate production plants. In addition, different test methods and IS specifications available for aggregates …
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202061 · The fracture behavior of concrete is dependent on its constituents. Thus, due to the application of heavyweight aggregates with high densities in heavyweight concrete (HWC), the structure and fracture behavior of this type of concrete will be different from normal concrete.
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20191217 · Aggregate size and shape measurement is comparatively difficult but has a larger impact on concrete properties. Four methods are available to estimate the size and shape characteristics of particles. The accuracy of each method depends on the particle sizes. Aggregate size varies from 0.15 to 25 mm for normal concrete.
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2023718 · Project Requirements: Assessing the project’s nature, load requirements, and environmental conditions aids in selecting an aggregate that fulfils the project’s specific needs. Particle Size and Gradation: Particle size distribution affects the workability and strength of the resulting concrete or other construction materials.
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