Utilizing of shields factors for sedimentation movements and drainage channels at the middle of Iraq (as a case study)

Al-Khafaji, Zainab S.; Hafedh, Alaa Adnan; Al-Bedyry, Najah Kadhim; Hussien, Safa A.

doi:10.21533/pen.v10i1.2724

Cited by 3 publications

(3 citation statements)

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“…Non-prismatic members are members with non-constant cross-sections along their length. Because the structural engineering techniques were improved, non-prismatic members are widely utilized in many structures including buildings and bridges [1]- [3]. Through material and structural member redistribution (tapering), architects and structural engineers can create and implement unique aesthetic architectural designations, as well as seek ideal low weight -high strength systems [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

The behavior of tapered one-way continuous two-span reinforced concrete slabs under repeated load

Mseer¹,

Alwash²

2022

PEN

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The scope of this study is to look at the effect of supplying a non-prismatic cross-section on the flexural strength of one-way continuous slabs reinforced concrete (RC) with two spans under repeated load. The research aims to study the ability of non-prismatic slabs to increase flexural stiffness which leads to saving construction costs. For this purpose, experimental investigations were carried out; the work consisted of fabrication and testing six two-span RC slabs with the same volume of concrete. Two of them were prismatic with a constant depth, while all the others were non-prismatic with tapered cross-sections having varying depth. Prismatic slabs were stiffer than non-prismatic slabs in all support settings, according to the findings. It is found that providing a tapered slab with a positive or a negative haunch has an insignificant effect on the bearing capacity for a prismatic slab. On the other hand, the tapered slab led to increase the deflection at service load compared to the prismatic slab.

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Section: Introductionmentioning

confidence: 99%

The behavior of tapered one-way continuous two-span reinforced concrete slabs under repeated load

Mseer¹,

Alwash²

2022

PEN

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“…Second, partial subgrade infiltration occurs when soil subgrade infiltration rates are modest, with the remaining water exiting via underdrains. Third, for designs that do not need infiltration, PP systems are encircled by a geomembrane, preventing detained water from entering the soil subgrade and releasing the stored water via underdrains (Al-Khafaji et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Surface and Subsurface Drainage from Permeable Friction Course (As a Sustainable Pavement) under Different Geometric and Hydrologic Conditions

Hussein¹,

Al-Khafaji

Al-Fatlawi

et al. 2022

IGJ

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The permeable pavement seems to be an established stormwater management solution that may be utilized in parking and low-traffic areas. These pavements can reduce the amount of runoff that reduces the environmental impact compared with a traditional drainage system. Traditional drainage systems, which carry stormwater runoff quickly to a stream by piped systems, cause increases in runoff volume, peak flow, and pollutants are taken to rivers. This paper tests permeable asphalt pavement in a purpose-designed laboratory apparatus. To understand the hydraulic flow conditions and the runoff performance that occurred within two layers of permeable and conventional pavement. The thickness of the permeable layer is 25, 37.5, and 50 mm, and the conventional layer is 80mm. An artificial rainfall covering an area of 1.5 ×1.0 m2 is constructed to study the relationship between surface runoff and subsurface runoff from a permeable pavement under different geometric design parameters of a roadway. Five slopes set at 0.0, 2.5, 5.0, 7.5 and 10 % in a short direction, and four discharge as 20, 40,60 and 80 L/min are tested. The result demonstrated that 50 mm thickness is suitable for permeable asphalt pavement under the most slope, increasing subsurface runoff and decreasing surface runoff water.

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“…The concrete compressive and split tensile strengths has been modified by the inclusion of hooks end steel fibers with varied aspect ratios and crimped round steel fibers, and it has been discovered that both fibers at various proportions for the same mixture have impacted both characteristics [32]. For varied amounts of steel fibers, flexural and split cylinder tensile strengths improved by up to 30 percent as comparison with ordinary concretes [33], [34]. The influence of fiber length and installation technique on tension-softening curves, flexural behavior, and fiber distribution features of ultrahigh-performance concretes was investigated by Yoo et al [35].…”

Section: Introductionmentioning

confidence: 99%

Evaluation the influence of steel-fiber on the concrete characteristics

Ali¹,

Falah²,

Hafedh³

et al. 2022

PEN

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The impact of steel fibers on the engineering characteristics of concretes were explored experimentally in this work. Steel fibers of 0.5, 0.7, and 0.9 percent by volume fraction were applied to concretes mixture with water/cements (W/C) proportions of 0.43 to accomplish this. There has been a total of 24 cubic specimens produced for compressive strengths testing, 24 cylindrical specimens for splitting tension strengths testing, and 12 cubic specimens for toughened unit weight testing. The experimental findings reveal that applying 0.5 percent to 0.9 percent of fibers made of steel to concrete boosts both compressive and tension strengths concurrently when compared to ordinary concretes; however, there is no discernible gain in hardened unit weight with increased fiber amounts.

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Utilizing of shields factors for sedimentation movements and drainage channels at the middle of Iraq (as a case study)

Cited by 3 publications

References 0 publications

The behavior of tapered one-way continuous two-span reinforced concrete slabs under repeated load

The behavior of tapered one-way continuous two-span reinforced concrete slabs under repeated load

Assessment of Surface and Subsurface Drainage from Permeable Friction Course (As a Sustainable Pavement) under Different Geometric and Hydrologic Conditions

Evaluation the influence of steel-fiber on the concrete characteristics

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