Effect of grout properties on shear strength of column base connections: FEA and analytical approach

Shaheen, Mohamed A.; Tsavdaridis, Konstantinos Daniel; Salem, Emad

doi:10.1016/j.engstruct.2017.08.065

Cited by 27 publications

(20 citation statements)

References 9 publications

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“…In the analysed case, the axial pressure force equals N Ed =0, so the bearing capacity of the single anchor is: The design bearing capacity of the joint F 2,vb,Rd , as well as the analytical prediction proposed by Shaheen et al [4], are presented in Figure 10. As it could be observed, experimental results are approximately 1.5 times larger than the design resistance defined in Eurocode 3.…”

Section: Resultsmentioning

confidence: 96%

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The Behaviour of Shear Anchors with Different Grout Properties

Spremić¹,

Gluhović²,

Jakovljević³

et al. 2021

ce papers

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During the assembling of a steel structure with anchors, grout should be used in connections between steel elements and a reinforced concrete support element. In horizontal and vertical joints, grout is used as a good construction practice for solving geometric tolerance problems. Grout can be used with cast‐in anchors or post‐installed anchors. However, the relation between anchor shear resistance and characteristic grout compressive strength is not described in detail in technical regulations. The behaviour of a connection considering achieved slip tolerances should match the boundary conditions set in the global analysis. In the support joint, grout properties could influence the value of the slip between a steel part and a concrete part of the joint. Slip value could be significant for the relevant design cases featuring the interaction of shear force and tension force. In this paper, results of the push‐out test conducted on anchors are presented. Based on the experimental test, the finite element analysis was performed to investigate the shear connection behaviour. According to the preliminary results, it can be concluded that a grout strength and a grout thickness influence the connection response when serviceability loads are applied, although they do not influence the ultimate load bearing capacity of anchors. In some cases, using the contemporary solutions of high strength grout materials, the slip between steel and concrete parts in the connection could be reduced.

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Section: Resultsmentioning

confidence: 96%

“…The estimation of the deformation at the moment of failure given by Shaheen at al. [4] fits the slip at the ultimate load that was measured during the testing. The difference that exists in the initial part of the diagram is attributed to the grout properties.…”

Section: Resultsmentioning

confidence: 99%

The Behaviour of Shear Anchors with Different Grout Properties

Spremić¹,

Gluhović²,

Jakovljević³

et al. 2021

ce papers

View full text Add to dashboard Cite

show abstract

“…Concerning the compressive strength, indirect tensile strength and elastic modulus of AMGs, the model that gives the best correlation is the following: y = a(b + WC c )(d + AR e )(f + AGE g ) + h (5) where y is the dependent variable corresponding to the examined strength property; a, b, c, d, e, f, g and h are coefficients calculated from the regression analysis; WC is the water to cement ratio; AR is the percentage of the acrylic resin dosage and AGE is the curing time in days. The values of the regression coefficients and R 2 , for each mechanical property, are given in Table 11.…”

Section: Resultsmentioning

confidence: 99%

“…Admixtures contribute significantly to the production of grouts with superior physical or mechanical properties compared to those obtained with the use of neat cementitious materials. Their use leads to improved grouting effectiveness in many construction projects, that require soil improvement and foundation strengthening of seismically weak buildings, ground stabilisation for tunnel construction, grout injection in cracks for the restoration of concrete buildings and grouting of pre-stressed cables in pre-stressed concrete structures, as well as reinforcing the base plate of steel frame structures [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Study on High Performance Polymer-Modified Cement Grouts

Anagnostopoulos

Dimitriadi

2021

CivilEng

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Engineers worldwide use various additives or chemical admixtures, such as polymer latexes, to improve the properties of cementitious materials for many construction projects. In this paper, the influence of acrylic or epoxy resin emulsions, along with a polycarboxylate superplasticiser on some basic properties (rheological behaviour, setting time, bleeding, strength) of thick cement grouts is presented. The experimental approach included the use of different polymer dosages mixed with grouts made of low water to cement ratios. The laboratory tests revealed that the incorporation of acrylic resin in grouts marginally affected the viscosity, whereas a significant increase in viscosity was obtained when an epoxy resin was added. Regardless of the prolonged setting times, both polymers improved the development of early or final strength. An acrylic resin dosage ranging from 0.25% to 0.75% and an epoxy resin dosage from 5% to 7.5% displayed the highest strength values, at all water to cement ratios. Additionally, all the polymer-modified grouts exhibited a higher bleed capacity, a fact that is significantly important where the bleeding of the grouts is crucial.

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“…Generally, there are two analytical methods for predicting the capacity of structural components: the component-based method and the curve fitting method. The former method is widely used for predicting steel and steel-concrete composite connection behaviour [76,77].…”

Section: Bolt Strength Reduction Factorsmentioning

confidence: 99%

Behaviour of stainless and high strength steel bolt assemblies at elevated temperatures — A review

Shaheen

Foster

Cunningham

et al. 2020

Fire Safety Journal

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This study documents important aspects of bolt assembly performance in structural steel connections at elevated temperatures that have not been the subject of detailed investigation to date. The codified strength reduction factors listed in the European and US standards are evaluated against experimental results obtained from the literature. It is concluded that the codified reduction factors should be updated as they are in many cases found to be non-conservative, particularly in the high temperature ranges. The effect of fire on the microstructure of steel bolts is also discussed, providing an insight into the roles that phase transformation and metallurgical failure play in the performance of high strength and stainless steel bolt assemblies at elevated temperatures. The study concludes by proposing a new reduction factor equation, based upon experimental results found in the literature.

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Effect of grout properties on shear strength of column base connections: FEA and analytical approach

Cited by 27 publications

References 9 publications

The Behaviour of Shear Anchors with Different Grout Properties

The Behaviour of Shear Anchors with Different Grout Properties

Study on High Performance Polymer-Modified Cement Grouts

Behaviour of stainless and high strength steel bolt assemblies at elevated temperatures — A review

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