Development of Soil Distribution and Liquefaction Potential Maps for Downtown Area in Yangon, Myanmar

Ogundipe, Oluwatomisin; Olanike, Akinkurolere Olufunke; Nnochiri, Emeka Segun; Ale, Patrick Olu

doi:10.28991/cej-0309137

Cited by 19 publications

(9 citation statements)

References 5 publications

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“…Likewise, concretes produced with 25 mm coarse aggregate generally have lower compressive strength values than those made with 20 mm coarse aggregate. This trend of strength development collaborates findings of other researchers [10].…”

Section: Compressive Strengthsupporting

confidence: 92%

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Influence of Aggregate Size and Shape on the Compressive Strength of Concrete

Konitufe

Abubakar

Baba³

2023

Constr.

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This paper investigates the effect of the size and shape of coarse aggregates on the compressive strength of concrete. Concrete strength is aﬀected by the surface texture, grading and maximum aggregate size. Six different sizes of coarse aggregate have been selected for both angular and rounded coarse aggregate. The coarse aggregates were used in the production of concrete and tested for workability, density and compressive strength. The specimen was cured for 3, 7, 14, 21 and 28 days by full water immersion. The results indicated that under the same curing conditions and water-cement ratio, the compressive strength of concrete produced with both angular and rounded aggregates increased with increasing aggregate size, up to an aggregate size of 14 mm. The optimum compressive strength of 27.58 N/mm2 and 25.88 N/mm2 were achieved at 28 days curing and 14 mm aggregate size for concrete with angular and rounded aggregates respectively. Coarse aggregates with angular shape result in concretes with better compressive strength than coarse aggregates with a rounded shape. The model equation developed to predict the compressive strength of rounded aggregate has R2 value of 95.66%, and the higher the value of R2, the better the model fits the data.

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Section: Compressive Strengthsupporting

confidence: 92%

“…Furthermore, Ogundipe et.al. [10] experimented with two different concrete mixes to determine how coarseness of the aggregate affects the compressive strength development of concrete. Two different nominal blend, 1:2:4 and 1:3:6, were used for the experiment.…”

Section: Related Workmentioning

confidence: 99%

Influence of Aggregate Size and Shape on the Compressive Strength of Concrete

Konitufe

Abubakar

Baba³

2023

Constr.

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“…Coarse aggregate particle size had a greater impact on the concrete compressive strength. Ogundipe et al [49] used single-size aggregates to produce concrete cubes with sizes of 6 mm, 10 mm, 12.5 mm, 20 mm, and 25 mm. e results revealed that the compressive strength began to increase until the aggregate size reached 12.5 mm, and the concrete produced with aggregate size of 20 mm had higher compressive strength than 25 mm.…”

Section: Effect Of Particle Size Of Coarse Aggregate On Compressivementioning

confidence: 99%

Study the Fire Resistance of Desert Sand Concrete (DSC) with Interface Phase through Uniaxial Compression Tests and Analyses

Zhang

Liu

et al. 2021

Advances in Civil Engineering

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The shortage of sand resources and high-rise building fires are becoming increasingly prominent. Desert sand (DS) with smaller particles can effectively fill the concrete voids and further improve its working performance; it is used as a fine aggregate to produce concrete. This article studied the performance of desert sand concrete (DSC) against fire resistance by using mathematical modeling for simulation. The stress-strain curves of desert sand mortar (DSM) after elevated temperatures were tested, and the constitutive model was established. By comparing the experiment and simulation results, it was verified that the model is suitable to be adopted in this study. Data from experiment and past literature can serve as parameters for the subsequent simulation. The destruction process of DSC under uniaxial compression after elevated temperature was simulated by using ANSYS. The simulation results indicated that, after elevated temperature, compressive strength reduced with increase of interface thickness. The compressive strength of DSC had a substantially linear increase as the interface compressive strength increased. For two-grade coarse aggregate, the optimum volume content was 45%, and particle size of it showed a significant effect on the compressive strength of DSC. The DSM constitutive model and simulation results can provide a sound theoretical basis and technical support for DSC engineering applications.

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“…Many researchers were trying to investigate the effect of gravel's size and shape on concrete behavior [10,11]. Ogundipe et al [12] and Yu et al [13] studied the role of coarse aggregate size on concrete behavior in *Corresponding Author Institutional Email: ali.taghia@qiau.ac.ir (S. A. Haj Seiyed Taghia) compression. The results of their experimental work were stated that compressive strength increases by raising of coarse aggregate size up to the specified limit.…”

Section: Introductionmentioning

confidence: 99%

Utilizing the Modified Popovics Model in study of effect of water to cement ratio, size and shape of aggregate in concrete behavior

Taghia

Darvishvand

Ebrahimi

2021

IJE

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Three parameters, size, shape of aggregate, and water to cement ratio, play important role on concrete behavior. To study the effect of these parameters, two types of aggregates were used, rounded (river) and sharped corners (broken). The maximum sizes of aggregates were chosen to be 9.5, 12.5, 19 and 25 mm for water to cement ratio were 0.35, 0.42, 0.54 and 0.76. In this investigation, the total of 32 mixed designs were made. The stress-strain tests were performed on the entire samples, and the results were compared with the Popovics model. To further evaluate the analysis, three criteria, correlation coefficient, variation coefficient, and percentage of change in energy absorption were demonstarted. Analysis showed that there is significant differences between the Popovics model and our experimental results. The Modified Popovics model was introduced for better understanding the concrete behavior in compression. The proposed model covered a wide range of the parameters concerned in this investigation. The Modified Popovics model was comapred with several models such as the Popovics, Hognestad, Thorenfeldt, and Tsai and the results showed that modified approach has a better clarification for behavior of concrete in compression. Moreover, the results indicated that these models were more accurate for prediction of concrete behavior with rounded aggregates in comparison to sharped aggregates.

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Development of Soil Distribution and Liquefaction Potential Maps for Downtown Area in Yangon, Myanmar

Cited by 19 publications

References 5 publications

Influence of Aggregate Size and Shape on the Compressive Strength of Concrete

Influence of Aggregate Size and Shape on the Compressive Strength of Concrete

Study the Fire Resistance of Desert Sand Concrete (DSC) with Interface Phase through Uniaxial Compression Tests and Analyses

Utilizing the Modified Popovics Model in study of effect of water to cement ratio, size and shape of aggregate in concrete behavior

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