(PDF) Gradation of Aggregates and its Effects on ...
1,2 UG Scholar, 3 Assistant Professor, ... Use of well graded aggregates in concrete is one of the key parameters to ensure proper strength of the concrete. Green concrete on …
Inicioscholarly article on concrete aggregate
1,2 UG Scholar, 3 Assistant Professor, ... Use of well graded aggregates in concrete is one of the key parameters to ensure proper strength of the concrete. Green concrete on …
In order to study the axial compression performance of lithium slag recycled concrete short columns in circular steel tubes, eight short columns were designed and tested. The main influence parameters of the specimens are lithium slag replacement rate and recycled concrete replacement rate. The test process and failure mode of the specimens are observed, …
This study shows the torsional conduct of aggregate streaming beams of reinforced concrete recycling. Pure torsion was perceived for 15 reinforced concrete beams containing recycled concrete aggregates. The beams were grouped into five lengths and cross-sectional groups. The study's principal parameters were the various percentages of longitudinal steel …
Mechanical and Durability Properties of Concrete Produced with Treated Recycled Concrete Aggregate. by V. Bhasya and B. H. Bharatkumar. American Concrete Institute ACI Materials Journal March 2018 ...
This research aims at analysing the mechanical performance of concrete with recycled aggregates from concrete pavements. First, the characteristics of various natural and recycled aggregates used in the concrete were thoroughly analysed. The composition of the recycled aggregates was determined and several physical and chemical tests of the …
A comparative analysis of the experimental results of the properties of fresh and hardened concrete with different replacement ratios of natural with recycled coarse aggregate is presented in the paper. Recycled aggregate was made by crushing the waste concrete of laboratory test cubes and precast concrete columns. Three types of concrete mixtures were …
Aggregate properties from laboratory tests were correlated with field performance. The micro-deval and magnesium sulfate soundness tests provide the best correlations with field performance of asphalt concrete and are recommended for characterizing aggregate toughness/abrasion resistance and durability/soundness.
Concrete is a composite material composed of water, coarse granular material (fine and coarse aggregate) embedded in a hard matrix (cement or binder) that fills the space among the aggregate particles and glues them together.
Scholar Commons Theses and Dissertations Spring 2020 Investigating the Effects of Aggregate Size and Reinforcement on ASR Cracking in Concrete Structures Studied with Different Evaluation Methods David Joseph Bianco Follow this and additional works at: https://scholarcommons.sc.edu/etd Part of the Civil and Environmental Engineering Commons
The scope of this study focuses on the use of two different types of industrial byproducts such as slags (FeNi and Electric Arc Furnace slag) combined with natural sand as concrete aggregates as well as the evaluation of their suitability on the final physicomechanical behavior of the produced concrete specimens. For this reason, twelve concrete specimens were prepared …
Accumulations of worn‐out automobile tires create fire and health hazards. As a possible solution to the problem of scrap‐tire disposal, an experimental study was conducted to examine the potential of using tire chips and crumb rubber as aggregate in portland‐cement concrete.
The replacement of recycled aggregate on concrete will decrease the characteristic Strength. In the context of Batch 1, the characteristic Strength for 0% was 29.58 MPa, 35% Recycled Aggregate was 27.27 MPa, 50%. Recycled Aggregate was 25.27 MPa and 65% Recycled Aggregate was 23.08 MPa.
Coarse aggregates (Fig. 5-2) consist of one or a com-CHAPTER 5 Aggregates for Concrete bination of gravels or crushed stone with particles predominantly larger than 5 mm (0.2 in.) and generally between 9.5 mm and 37.5 mm (3⁄ 8 in. and 11⁄ 2 in.). Some natural aggregate deposits, called pit-run gravel, consist
To obtain the influence law of the concrete aggregate particle size on the attenuation of elastic wave parameters, a higher aggregate mass ratio was selected within a reasonable range for the ...
The aggregate that allows obtaining the lowest density of lightweight concrete (from 300 to 800 kg/m3) is vermiculite. This is also the aggregate which can be used only for production of insulation concrete [9]. Therefore, the research program was focused on testing how two very different light aggregates work together in one concrete.
The construction of asphalt concrete pavement requires a large amount of aggregates, and because high-quality aggregates are non-renewable resources, researchers hope to replace some of the natural aggregates with recycled aggregates, so RCA application in asphalt mixture has attracted the attention of researchers.
• The experimental study revealed that recycled concrete aggregate has a detrimental effect on concrete mechanical performance. Results exhibit that when sand was substituted with recycled fine aggregate in concrete with no fibers, the split tensile and flexural strength was reduced by 14.2 and 14.9%, respectively.
ABSTRACT. The possibility of the use of recycled aggregates from the construction industry in green concrete production is of increasing importance to reduce the negative environmental impact associated with construction and demolition wastes. The objective of this study is to investigate the effect of recycled concrete aggregate (RCA) quality on the …
The disadvantage of this type of concrete is poor strength and durability. Researches have been going yet in the recycled concrete to overcome those disadvantages. This paper reviews the recent developments that were made by the researchers in the Recycled Aggregate Concrete (RAC).
It was reported that the long-term net benefit of producing coarse recycled concrete aggregate (CRCA) from waste concrete was positive with a value of US$ 22,334,116 per year, while that of crushed coarse natural aggregate (CNA) was a negative net value of US$ - 31,841,109 per year.
The effect of superplasticizers on the mechanical performance of concrete made with fine recycled concrete aggregates. Cem Conc Comp 34 ( …
Abstract Scarcity of the construction materials, peculiarly the natural river sand has become a serious threat in the construction industry. Though many researchers of developed and developing countries are trying to find alternative sources for the same, the complete replacement of the fine aggregate in concrete is crucial. Geopolymer sand developed from …
Concrete is a mixture of paste and aggregates, or rocks. The paste, composed of portland cement and water, coats the surface of the fine (small) and coarse (larger) aggregates. Related journals of Concrete: International Journal of Concrete Structures and Materials, The Indian concretye journal, Cement and Concrete Research, Journal of advanced concrete …
Exposed aggregate concrete requires removing the outer layer, or skin, of the concrete paste, revealing the aggregate beneath. This is …
Three batches of concrete specimens made of different size aggregates when the aggregate-to-cement ratio is 6:1, 8:1, and 10:1, and when no fine aggregate is used are analysed in the paper . Concrete mixes with a higher aggregate to cement ratio of 8:1 and 10:1 were found to be suitable for pavement that does not require high compressive ...
This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete.
Go to reference in article Google Scholar [2] Özturan T. and Çeçen C. 1997 Effect of coarse aggregate type on mechanical properties of concretes with different strengths Cement and Concrete Research 27 165-170. Go to reference in article Crossref Google Scholar [3] Tasong W.A., Lynsdale C.J. and Cripps J.C. 1998 Aggregate-cement paste interface.
Structural Concrete, 11(3), 161–165. Article Google Scholar Abdul Awal, A. (1984). Manufacture and properties of prepacked aggregate concrete. ACI304.1-R-92. (1997). Guide for the use of preplaced aggregate concrete for structural and mass concrete applications. Farmington Hills: American Concrete Institute.
The aggregate is more densely packed with a larger aggregate proportion, and the spatial arrangement of the aggregate varies with the aggregate proportion. Fig. 5 shows the randomness of the aggregate spatial arrangement in concrete with the same aggregate proportions of 0.30 and 0.55. Therefore, the effects of the aggregate proportion and the ...
Semantic Scholar extracted view of "Concrete Containing Plastic Aggregates" by A. Al-Manaseer et al. Skip to search form Skip to main ... Corpus ID: 138924868; Concrete Containing Plastic Aggregates @article{AlManaseer1997ConcreteCP, title={Concrete Containing Plastic Aggregates}, author={Akthem Al-Manaseer and T.r. Dalal}, …
10%— An investigation of the compressive strength of concrete in which concrete rubble was used as an aggregate, unpublished thesis, Cornell University, 1947. Malhotra V. M. — The use of recycled concrete as a new aggregate. Proc. of Symposium, Energy and Resource Conservation in the Cement and Concrete Industry, Canmet, Ottawa, 1976.
1,2 UG Scholar, 3 Assistant Professor, ... Use of well graded aggregates in concrete is one of the key parameters to ensure proper strength of the concrete. Green concrete on other hand is need of ...
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