Interface Shear Strength Properties of Gravel Bases and Subgrades with Various Reinforcements

Goud, G. Narendra; Balunaini, Umashankar

doi:10.1007/s40891-017-0124-4

Cited by 12 publications

(2 citation statements)

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“…The ratio of the shear strength at of reinforced soil (τ reinforced) at interface to the shear strength of the soil without reinforcement (τ unreinforced) at same normal stress is defined as interaction coefficient ( η). The interaction coefficient of the reinforcement is calculated using Equation 1 (Goud and Umashankar, 2018). When the value of interaction coefficient is larger than one, it is mean a better using of reinforcement in pavement systems.…”

Section: Interaction Coefficient Of Reinforcementmentioning

confidence: 99%

Full Text Book of Minar Congress9

2023

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Using geogrid in road pavements can enhance pavement performance by enhancing bearing capacity, lateral confinement, and overall stiffness, in addition to lowering lateral and vertical pavement deformations. A Number of large-scale direct shear experiments were applied in this paper to assess the influence of compaction degree on the mechanical interaction among a clay subgrade soil and a subbase layer in both cases of using and not using reinforcement at the interface. Clay subgrade soil, Subbase granular materials as Type B, and Biaxial Geogrid BX1100 were employed as reinforcing materials in this investigation. In the current investigation, direct shear test was employed by fabricating a large-scale direct shear apparatus consisting of a square upper box with dimensions of (200 mm × 200 mm × 100 mm), and a rectangular lower box with dimensions of (200 mm × 250 mm × 100 mm). On specimens with and without reinforcement, 40 interface tests were performed for five degrees of compaction (100, 98, 93, 90, and 84%), which corresponded to (60, 55, 50, 45, and 40 blows/layer) for the shear box, with the regular loads applied for each combination being (25 -50 -75 -100) kPa. The results demonstrate that the interface shear stress curves grew and trailed a similar pattern for the four normal stress (25 -50 -75 -100) kPa. At their optimal moisture levels, the effect of dry density on the interface properties of these combinations (geogrid-soil) was also examined. The interface shear failure envelopes grew with increasing molding dry densities (i.e. degree of compaction), reaching a maximum value at 97% degree of compaction.

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Section: Interaction Coefficient Of Reinforcementmentioning

confidence: 99%

Full Text Book of Minar Congress9

2023

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Section: Interaction Coefficient Of Reinforcementmentioning

confidence: 99%

Inhibitory Effect and Antioxidant Activity of the Internal Membrane Decomposition of Egg Shells

Fadhel Abbas

2023

Full Text Book of Minar Congress9

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Different samples were collected from the internal membrane of the white and red eggshells local and imported to prepare protein hydrolyases using the enzyme Flavourzyme and studied the chemical composition of the raw material used moisture, ash, protein and fats where the proportions of chemical content were comparable to the samples prepared for the different species of hen and age, The decomposition lasted for two hours during which the degree of decomposition was estimated every half on hour. The hydrolyses of the internal membranes of the imported red egg shells were 0.5990%, the hydrolysates showed the highest reductive strength of the imported white eggs, 9.899%, while the protein decomposition of the eggshells of the eggshells in relation to the feasibility of ferrous ion binding of local red eggs was 40.547. Acquisition of hydrogen peroxide showed that the hydrolysates prepared from the internal membranes of locally red eggs and imported red eggs was a close result, reaching 333.92, whereas the ability of the hydroxyl root to decompose was the protein decomposition of the internal membranes of the shells of flat white eggs. 21.433% and Degradable internal membranes of eggs imported white super Oxide ability to seize the radichal of the highest negative value of the samples prepared 27.061% while did not appear to Tallit Albrootinh for all kinds of internal membranes effective inhibitory to bacteria.

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