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The uses of cellular aggregate in concrete mixes with same percentage and due to the reduction in density, the compressive strength of concrete decrease by 37.7-66.1% and 35.4-69.2% at age 7 and ...
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The materials used as lightweight aggregate in concrete are discussed in this study. According to research, utilizing trash as a lightweight aggregate not only improves the characteristics of concrete but also gives a sustainable approach to minimize global waste. Content from this work may be used under the terms of the Creative …
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Industrial activities in Iraq are associated with significant amounts of non-biodegradable solid waste, waste plastic being among the most prominent. This study involved 86 experiments and 254 tests to determine the efficiency of reusing waste plastic in the production of concrete. Thirty kilograms of waste plastic of fabriform shapes was …
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1. Introduction . Concrete is a raw material often utilized in construction and serves as the foundation for all infrastructure projects and construction projects worldwide [1,2,3,4,5].Depending on the kind of concrete and the quantity of cement used, the main components of concrete (cement) have diverse effects on the environment.
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This research deals with the field investigations and construction properties for using limestone as a lightweight course aggregate in concrete mixture in stead of normal coarse aggregate ...
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Aggregate is considered as the most important consistent filler because it gives large volume, low cost as compared with the use of cement paste alone in the concrete mixture without. sacing ...
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Concrete production consumes a large amount of fine and coarse aggregates. Therefore, eliminating or reducing the consumption of aggregates in concrete can produce environment-friendly building materials. Considerable research has confirmed that the use of waste materials in concrete addresses the high utilisation of raw …
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improved concrete's mechanical properties [34,35]. Most research on agricultural materials often investi-gates their utilization in producing lightweight aggregate concrete. The use of DS in lightweight structural concrete depends on the availability of DS, its material properties, and its economics. DS, in particular, provide good quality
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The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, …
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This study aims to reuse plastic waste from the gas bottle valve manufacturing process in concrete. This type of waste plastic was used as a partial substitute . ... Iraqi Specifications, No. 5 1984. Iraq Seismic Code for Concrete 304. ... 1984. Aggregate from natural sources for concrete and construction. Baghdad, Iraq. …
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Concrete aggregates are composed of geological materials such as gravel, sand and crushed rock. The size of the particles determines whether it is a coarse aggregate (e.g. gravel) or a fine aggregate (e.g. sand). The resulting concrete can be used in its natural state or crushed, according to its use and application.
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The aggregate is typically composed of various types of crushed rock or other materials that help to create the desired strength, durability, and overall composition of the concrete. There are three primary types of aggregate used in concrete: Coarse aggregate: This type of aggregate is typically larger than 4.75 mm in size and is usually made ...
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In this study, total 90 cylinders and 5 beams were prepared with stone aggregate and 5%, 10%, 15% and 20% replacement of stone by recycled plastic aggregate at w/c ratio of 0.50. Tests were ...
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Answer: Fine aggregate is used in concrete to serve two purposes, 1. Provides a filler for the spaces between the coarse aggregates (like gravel or crushed stone) in a concrete mix. 2. This helps to reduce the void content in the concrete mixture, enhancing the overall compactness and workability of the material.
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Mechanical properties of high performance concrete are made from replacing natural coarse aggregate by 25% of recycled coarse aggregate, is considered the best among the other replacement ratios ...
DetailsThe sand used in their study was different type from the coarse aggregate used in concrete. Ezeldin and Aitcin [7] reported that aggregate type did not influence the flexural tensile strength; contrary to this Bishr et al. [6] reported that aggregate type influenced split tensile strength. Additionally, they did not consider the influence of ...
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Department of Civil Engineering, Nahrain University, Baghdad, Iraq E-Mail: dr_adel_azzawi@yahoo ... It may be concluded that the use of recycled aggregates in concrete may help to solve a
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Aggregates are the major constituent (ingredient) in concrete, making up 60% to 70% of the volume of concrete. Aggregates influence the workability of plastic concrete and also the durability, strength, thermal properties, and density of hardened concrete. Particle size divides aggregates into two categories: fine and coarse. Most …
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For each type of coarse aggregate. 75 cubes (150x150mm) were cast to allow the co mpressive strength to be monitored at 3, 7, 14, 21, and 28 days. Test result show that concrete made from river ...
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By Bram / 28 September 2023. The Asphalt Aggregate Specification Chart is an invaluable resource for the construction industry, providing a comprehensive guide to the specifications of asphalt aggregates. This chart serves as a reliable reference for engineers, contractors, and suppliers involved in road construction and maintenance projects.
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The specimens used in the study were made of concrete with varied aggregate contents from 1000 to 1400 kg/m 3. The specimens were made and tested at the Hawler Construction Laboratories (HCLabs) in Erbil, Kurdistan Region of Iraq. The UPV measurement and compressive strength tests were carried out at the concrete age of 28 …
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Civil Engineering Department, College of Engineering, University of Al-Qadisiyah, Iraq ... possibility and feasibility of using other materials to b e used as a fine aggregate in concrete mixtures.
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Fine aggregate: The fine aggregate was natural sand of 4.75 mm maximum size obtained from the Al-Ukaider area in Iraq. The properties of the fine aggregate was determined and fulfilled according to I.Q.S. No. 45/1984, I.Q.S. No. 30/1984 and I.Q.S. No. 31/1981. Table 3 presents the properties of the sand, and its gradation is presented in …
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About Lafarge Iraq. Lafarge Iraq is a member of Holcim Group- the global leader in innovative and sustainable building solutions. Lafarge Iraq serves a wide range of products and solutions designated to meet housing and construction needs, from small projects to major construction and infrastructure projects. ... Ready-Mix Concrete, Aggregates ...
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The use of waste glass as aggregate in concrete has been attempted recently. Using such glass as a construction material is among the most strictly choise because of the potentially reducing the cost of glass disposal and concrete production. It is expected that obvious differences occur in the structure between glass concrete and ...
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5. Aggregate Absorption. Aggregate absorption is used for applying a correction factor for aggregates in dry condition and determining water demand for concrete in saturated surface dry condition. Aggregate can absorb water up to 2 % by weight when in bone dry state. However, in some cases, the aggregate absorption can be as high as 5%.
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In construction terms, aggregate refers to granular materials such as sand, gravel, or crushed stone. These components, when combined with cement and water, give birth to what we commonly know as concrete. A key point to remember is that aggregate constitutes about 60-75% of concrete's total volume.
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recycled aggregates for use in high strength, concrete, to better understand the properties of concrete with recycled aggregates used as a substitution material for normal aggregates in concrete. The study thus compared the properties of high strength concrete with several percentage (22,40, 60,80, and ) of recycled aggregates.
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The coarse aggregate used was crushed rock with a maximum size of 20 mm and the fine aggregate was river bed sand with particles passing through 5 mm, both available in the Kurdistan-Iraq region. Table 3 presents the physical properties of aggregates whereas Figure 1 and Figure 2 show the particle size distribution of fine and …
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PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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