Damage Assessment and Strengthening of R/C Building Constructed on Expansive Soils

Daoud, Osama M. A.

doi:10.21660/2013.8.24

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…This retrofitting technique is termed as jacketing. This is the usual solution to fix deteriorated or damaged columns caused by environmental hazards like fire, seismic event, or differential upheaval of the foundation because of expansive clay soil [1].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Lejano¹

2017

GEOMATE

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ABSTRACT:This study is about the use of fiber reinforced mortar (FRM) as a jacketing material for reinforced concrete (RC) columns. Presented in this paper are analyses of the test results of destructiveloading that were conducted to explore the applicability of different jacketing materials as retrofit to RC columns. The jackets used to wrap RC columns were built of mortar mixed with different fibers. The fibers considered were steel fibers and polymer fibers. A simple model based on material properties was used to simulate the axial strength of the columns. The numerical model calculation results as well as the experimental test results were used to assess the performance of the jacketing materials used. The experimental part consisted of testing two sets of column specimens. The first set is wrapped with mortar jackets reinforced with steel fibers and the second set is wrapped with mortar jackets reinforced with polymer fibers with and without fly ash. The efficacy of the different FRM jackets as retrofitting materials was assessed by calculating the effect of confinement. The calculation was accomplished by measuring the maximum load of the retrofitted columns with jackets and then subtracting the load that can be carried by the control specimens, that is, the column with the original cross section. The confining effect was used as the basis in determining the confined compressive strength of concrete and then used to establish a model that can simulate the axial strength of the columns. The results indicate that the FRM jackets are effective as retrofitting material for RC column.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Lejano¹

2017

GEOMATE

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“…A series of tests were performed to examine the effect of induced nanocomposites on the durability behaviors of the expansive clay, the results showed that the improving factor in its unconfined strength was found to be 220%. A comprehensive assessment of multi storey building skeleton including geotechnical investigation resting on expansive soil was carried out [8] ,the building experienced structural cracks ranged from 15to 20 cm , the study recommended a number of solutions to prevent swellings . [9] used the bentonite to stabilize Loessic soils ,they concluded that the addition of bentonite increases the compressive strength by 400%.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Approach for Swelling Soils Remedies

Alzubaidi¹

2016

Geomate

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ABSTRACT:The effect of drying and remolding on undisturbed expansive soil samples were investigated at different periods. The results showed that the swelling potentials for remolded samples were higher than those for undisturbed samples for different periods of testing. The results also showed that final swells and swell pressures increased as the initial moisture contents decrease for both remolded and undisturbed samples. The swelling potential increased as the initial dry density increases for both remolded and undisturbed expansive soil samples, and vice versa The cement dust used as a new additive material to decrease the swelling potential of the expansive soil. The results showed that the plasticity index, linear shrinkage, and clay minerals decreased with increasing cement dust percentage, where 50% of the montmorillonite disappeared after treatment the soil with 5% cement dust. The effect of cement dust columns on the swelling potential of the soil also studied extensively. The cement dust columns were embedded in the middle of the expansive soils using CBR mould .The results showed that the swelling potential decreased with increasing number of cement dust columns and when increasing the diameter of the cement dust columns ,a distinctive decrease in the swelling potentials were recorded. When decreasing the densities and increasing the diameters of cement dust columns resulted in decreasing the swelling potentials of the expansive soil. The swelling of the expansive soil been decreased when increasing the number of reinforced and non-reinforced cement dust columns. The swelling potentials showed distinctive decrease when the lengths of the reinforced cement dust columns increased.

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Damage Assessment and Strengthening of R/C Building Constructed on Expansive Soils

Cited by 2 publications

References 1 publication

Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Evaluation of Different Fiber Reinforced Mortar as Retrofitting Materials for Rc Columns

Comprehensive Approach for Swelling Soils Remedies

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