Impact of Coarse Aggregate on Compressive Strength of Concrete

Quayson, Jeriscot H.; Mustapha, Zakari

doi:10.24191/bej.v16i1.9674

Cited by 9 publications

(8 citation statements)

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“…Rounded aggregates have a smoother surface area, which makes them less effective at interlocking. When it comes to high-strength and high-performance concrete, the shapes, textures, and sizes of the aggregates become increasingly significant characteristics for the concrete's strength, durability, and low water permeability [24].…”

Section: Partial Gradation Approachmentioning

confidence: 99%

“…In addition, it is possible that carrying out experiments in a laboratory is the most appropriate course of action to take in order to investigate the impact that aggregate gradation has on concrete. As a result, here a number of trial concrete mixes with various aggregate gradations were created in order to acquire a relatively superior aggregate gradation method in accordance with the prerequisites of concrete qualities, primarily compressive strength and workability [24].…”

Section: Partial Gradation Approachmentioning

confidence: 99%

“…The aggregates, which make up between 70 and 90 percent of the volume of conventional concrete, are undoubtedly the most important components of conventional concrete [1]. To understand the condition of concrete both in fresh concrete and hardened concrete, physical and mechanical properties of each materials need to be studied.…”

Section: Introductionmentioning

confidence: 99%

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Performance of High-Strength Concrete Properties for Two Locally Available Aggregates: Partial Gradation Approaches

et al. 2023

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The aggregates in a concrete play a role in both strength and durability. Without a change of doubt, aggregates have a significant impact on mechanical, fresh and long-term performance properties of concrete. Low quality aggregates will give low behaviours that affect the condition of the concrete. In this investigation, improvement of local’s aggregate - natural mount sand and uncrushed mount gravel taken from Lumajang, Pasuran and Bangkalan, used as the parameter study. This study is conducted to support the low characteristics aggregate in terms of water absorption, sorptivity and compressive strength concrete. Three mixes variables are used based on w/c content, 0.40, 0.35 and 0.30 reflected the concrete quality. On the other hand, concrete mixes with locally grading group are 80 % aggregate from Bangkalan and 20 % aggregate from Lumajang or Pasuruan + Bangkalan (M4 and M5). The results indicated that the M4 and M5 grading group concrete mix had the maximum compressive strength out of the eight different concrete mixes. This particular mixture also improves the water absorption and sorptivity of the concrete. HIGHLIGHTSTen concrete mixes with three concrete types were prepared using mount sand uncrushed mount gravel, with respect to understanding mechanical and physical properties comparing to 28-day compressive strength results. Those three mixes, M1, M2 and M3, provided to give the alternative of using unused coarse aggregate with low characteristic under three different w/c ratio i.e., 0.40, 0.35 and 0.30. Those conditions relate to the concrete quality - minimum compressive strength that normally used in the construction. Low characteristic aggregate, without a doubt impacting on long term performance properties of concrete structure. Locally available materials taken from Lumajang, Pasuruan and Bangkalan were used as the combined grading group of fine and coarse aggregate in each mixture. It was found that the optimum combine grading group was fine aggregate from Bangkalan + coarse aggregate from Lumajang or Pasuruan + Bangkalan (M4 and M5). Using M4 and M5 grading group, results indicated that, the highest compressive strength among the eight concrete mixes. In addition, these concrete mixes also illustrate to have low sportively and water absorption. GRAPHICAL ABSTRACT

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Section: Partial Gradation Approachmentioning

confidence: 99%

Section: Partial Gradation Approachmentioning

confidence: 99%

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Performance of High-Strength Concrete Properties for Two Locally Available Aggregates: Partial Gradation Approaches

et al. 2023

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“…However, the aggregate type was the most significant factor affecting the strength of concrete produced. Authors [15] examined the impact of coarse aggregates type on the compressive strength of concrete. According to their findings, concrete made from quartzite aggregate had the highest compressive strength.…”

Section: Review Of Previous Studiesmentioning

confidence: 99%

The Effect of Aggregate Types on the Properties of Concrete

Mohammed

Yakubu

Mamman

et al. 2021

PoS

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Concrete is an extensively used construction material due to its versatility, strength, durability, and ease in making various forms and shapes. The use of substandard materials, deficient quality concrete has been identified in the literature as the leading cause of building collapse in Nigeria. Aggregates strongly affect the concrete's fresh and hardened properties, mixture proportions, and economy. More than 1 /3 of the volume of concrete is occupied by the coarse aggregate, and any changes in rough aggregate type could affect its strength and fracture properties. This study examined the impact of coarse aggregates on the mechanical properties of concrete. Selected aggregates which are granite (igneous rock), schist (metamorphic rock), and sandstone (sedimentary rock), were used in this study. Aggregate Impact value and water absorption test were carried out for each of the aggregates used. A slump test was conducted on the fresh mixture for granite, schist, and coarse sandstone aggregates with river sand (fine aggregate) using a water-cement ratio of 0.50; it was observed that granite has a slump value of 35 mm, schist 28 mm, and sandstone 25 mm. Nominal mix (1:2:4) was adopted, and mix compositions were calculated using the absolute volume method. Twelve cubes (100x100 mm) and twelve cylinders (100x300 mm) were cast for each type of coarse aggregate. The specimens were cured by submersion. Three of the models were tested for 7, 14, 21, and 28 days to determine their compressive and splitting tensile strengths. Granite was found to have the highest average compressive strength of 16.00 N/mm 2 with an average density of 2575 kg/m 3 , compressive strength of schist was 15.17N/mm 2 with an average density of 2520 kg/m 3, while sandstone has the lowest average compressive strength of 12.33 N/mm 2 with an average density of 2500 kg/m 3 . Granite was found to have the highest moderate splitting tensile strength of 1.31 N/mm 2 with an average density of 4266.67 kg/m 3 , breaking tensile strength of schist was 0.99 N/mm 2 with an average density of 4256.67 kg/m 3 .In contrast, sandstone has the lowest average split tensile strength of 0.67 N/mm 2 with an average density of 4241.67 kg/m 3 . Densities and stability of the individual aggregates accounted for the variation in the concrete forces because of differences in properties and strength. In conclusion, the effect of coarse aggregate on the properties of concrete was identified, which will inform site concrete production of the suitability of aggregate selection in concrete work.

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“…В ряде статей рассматривается возможность замены их известняком и песчаником, однако марочная прочность полученных бетонов не превышает показатели бетонов на гранитном щебне [4,5]. Положительное влияние на механические показатели бетонов оказывает замена традиционного заполнителя кварцитом, диабазом, базальтом [6][7][8]. Повышенная прочность наблюдается у бетонов с добавкой высокомагнезиальных вскрышных пород [9,10].…”

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Use of Magnesium-Containing Mining Waste

Khudyakova¹,

Kotova²

2022

УСЕ (ACNR)

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В условиях настоящего времени проблема использования отходов горнопромышленного комплекса приобретает все большую актуальность. Количество вскрышных, вмещающих пород и некондиционного сырья постоянно возрастает. В отвалах находятся огромные объемы магнийсодержащего сырья, утилизация которых является актуальной задачей. Основные направления использования горных отходов -это рекультивация земель и строительная отрасль, в частности производство строительных материалов. Целью работы является установление возможности использования магнийсодержащего сырья при получении тяжелых бетонов. Изучен гранулометрический состав щебня из магнийсодержащих отходов и определены основные физико-механические свойства. Щебень всех видов имеет марку по дробимости М1400, по истираемости ИI. Он различается содержанием зерен пластинчатой и игловатой формы. Установлено, что щебень можно использовать в качестве крупного заполнителя для бетонов. Изучены механические показатели полученных бетонов. Установлено, что использование щебня из базальта и нефрита не оказывает значительного влияния на прочность образцов при сжатии. Щебень из серпентинита снижает прочность бетонов более чем на 5% по сравнению с контрольным образцом. Плотность полученных бетонов также зависит от вида щебня. Наименьшее значение зафиксировано у бетонов с серпентинитовым щебнем (2301 кг/м 3 ), наибольшее -с базальтовым щебнем (2391 кг/м 3 ). Таким образом, щебень из магнийсодержащих горнопромышленных отходов является перспективным сырьевым материалом для получения тяжелых бетонов. Вовлечение в строительное производство горнопромышленных отходов позволит сократить количество земель, занятых отвалами, и снизить негативное воздействие на окружающую среду. Кроме того, появляется возможность расширения номенклатуры сырьевых материалов и снижения себестоимости производимых бетонов.

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Impact of Coarse Aggregate on Compressive Strength of Concrete

Cited by 9 publications

References 0 publications

Performance of High-Strength Concrete Properties for Two Locally Available Aggregates: Partial Gradation Approaches

Performance of High-Strength Concrete Properties for Two Locally Available Aggregates: Partial Gradation Approaches

The Effect of Aggregate Types on the Properties of Concrete

Use of Magnesium-Containing Mining Waste

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