Shear Bond Strength of Composite and Ceromer Superstructures to Direct Laser Sintered and Ni-Cr-Based Infrastructures Treated with KTP, Nd:YAG, and Er:YAG Lasers: An Experimental Study

2018 ◽  
Vol 36 (4) ◽  
pp. 203-208 ◽  
Author(s):  
Oguzhan Gorler ◽  
Ihsan Hubbezoglu ◽  
Melih Ulgey ◽  
Recai Zan ◽  
Kubra Guner
Keyword(s):  
Experimental Study ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Direct Laser

Experimental Study on Crack Resistance of Ceramic Sand Insulation Mortar

2011 ◽  
Vol 366 ◽  
pp. 494-497
Author(s):  
Wei Jun Yang ◽  
Huan Zeng
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Bond Strength ◽  
Crack Resistance ◽  
Performance Indicators ◽  
Shear Bond Strength ◽  
Shrinkage Rate ◽  
Masonry Mortar

This article analyzes about four aspects of insulation mortar of various performance indicators, including anti-cracking, flexural strength and compressive strength, shear bond strength and shrinkage rate, it is concluded that the insulation mortar meets to various performance indicators requirement of masonry mortar or plastering mortar.

scholarly journals Experimental Study of Hydraulic Sealability and Shear Bond Strength of Cementitious Barrier Materials

2021 ◽  
Author(s):  
Mohammadreza Kamali ◽  
Mahmoud Khalifeh ◽  
Elsayed Eid ◽  
Arild Saasen
Keyword(s):  
Experimental Study ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Elevated Pressure ◽  
Cementitious Materials ◽  
Barrier Materials ◽  
Naturally Occurring ◽  
Bottom Hole ◽  
Slurry Preparation ◽  
Push Out

Abstract In this experimental study, two different cementitious materials including (i) a class of expansive cement that is currently used for P&A operations, and (ii) a non-cement-based naturally occurring rock, known as geopolymer are selected to examine the hydraulic bond strength and shear bond strength. Clean machined steel and rusty corroded steel were selected to represent the casing. The test samples were cured at 90 °C, which is considered as bottom-hole static temperature (BHST), and under elevated pressure of 17.2 MPa for one week. The hydraulic sealability of the barrier materials tested up to 3.4 MPa of differential pressure. The results indicated that additives used in slurry preparation have an impact on the hydraulic sealability of the material. Additionally, the rusty corroded streel provided a better hydraulic sealability comparing to the clean machined steel for the same cementitious material. The shear bond strength test was performed by running the push-out test. According to the present test observations, no correlation was found between the shear bond and hydraulic bond strength of different barrier materials. The geopolymer showed the lowest shear bond strength, while it provided the highest hydraulic sealability.

scholarly journals Experimental Study of Hydraulic Sealability and Shear Bond Strength of Cementitious Barrier Materials

2021 ◽  
pp. 1-33
Author(s):  
Mohammadreza Kamali ◽  
Mahmoud Khalifeh ◽  
Elsayed Eid ◽  
Arild Saasen
Keyword(s):  
Experimental Study ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Elevated Pressure ◽  
Cementitious Materials ◽  
Barrier Materials ◽  
Naturally Occurring ◽  
Bottom Hole ◽  
Slurry Preparation ◽  
Push Out

Abstract In this experimental study, two different cementitious materials including (i) a class of expansive cement currently used for plug and abandonment (P&A) operations, and (ii) a non-cement-based naturally occurring rock, known as geopolymer are selected to examine the hydraulic bond strength and shear bond strength. Clean machined steel and rusty corroded steel were selected to represent the casing. The test samples were cured at 90 °C considered as bottom-hole static temperature (BHST) and under elevated pressure of 17.2 MPa for one week. The hydraulic sealability of the barrier materials tested up to 3.4 MPa of differential pressure. The results indicated that additives used in slurry preparation impact the hydraulic sealability of the material. Additionally, the rusty corroded streel provided a better hydraulic sealability comparing to the clean machined steel for the same cementitious material. The shear bond strength test was performed by running the push-out test. According to the present test observations, no correlation was found between the shear bond and hydraulic bond strength of different barrier materials. The geopolymer showed the lowest shear bond strength, while it provided the highest hydraulic sealability.

scholarly journals Shear bond strength and adhesive remnant index of orthodontic brackets bonded to enamel using adhesive systems mixed with TiO2 nanoparticles

2018 ◽  
Vol 23 (4) ◽  
pp. 43.e1-43.e7 ◽  
Author(s):  
Mohammad Behnaz ◽  
Kazem Dalaie ◽  
Hoori Mirmohammadsadeghi ◽  
Hamed Salehi ◽  
Vahid Rakhshan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Bond Strength ◽  
Tio2 Nanoparticles ◽  
Shear Bond Strength ◽  
Bacterial Activity ◽  
Adhesive Systems ◽  
Luting Agents ◽  
Adhesive Remnant Index ◽  
Bracket Base

ABSTRACT Introduction: It is recently suggested that titanium dioxide (TiO2) nanoparticles can be added to bracket luting agents in order to reduce bacterial activity and protect the enamel. However, it is not known if this addition can affect the shear bond strength (SBS) below clinically acceptable levels. Therefore, this study examined this matter within a comprehensive setup. Methods: This in vitro experimental study was conducted on 120 extracted human premolars randomly divided into four groups (n=30): in groups 1 and 2, Transbond XT light-cured composite with or without TiO2 was applied on bracket base; in groups 3 and 4, Resilience light-cured composite with or without TiO2 was used. Brackets were bonded to teeth. Specimens in each group (n=30) were divided into three subgroups of 10 each; then incubated at 37°C for one day, one month, or three months. The SBS and adhesive remnant index (ARI) were calculated and compared statistically within groups. Results: The SBS was not significantly different at one day, one month or three months (p>0.05) but composites without TiO2 had a significantly higher mean SBS than composites containing TiO2 (p<0.001). The SBS of Transbond XT was significantly higher than that of Resilience (p<0.001). No significant differences were noted in ARI scores based on the type of composite or addition of TiO2 (p>0.05). Conclusions: Addition of TiO2 nanoparticles to Transbond XT decreased its SBS to the level of SBS of Resilience without TiO2; thus, TiO2 nanoparticles may be added to Transbond XT composite for use in the clinical setting.

Experimental study on oil based mudcake removal and enhancement of shear bond strength at cement-formation interface

2019 ◽  
Vol 176 ◽  
pp. 754-761 ◽  
Author(s):  
Kevin Nsolloh Lichinga ◽  
Mtaki Thomas Maagi ◽  
Qinggui Wang ◽  
Haiyang Hao ◽  
Jun Gu
Keyword(s):  
Experimental Study ◽  
Bond Strength ◽  
Shear Bond Strength

scholarly journals An Experimental Study on Effect of Palm – Shell Waste Additive to Cement Strenght Enhancement

2017 ◽  
Vol 2 (1) ◽  
pp. 64
Author(s):  
Adi Novriansyah ◽  
Novrianti Novrianti ◽  
Mursyidah U ◽  
Sepria Catur Hadiguna
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Biaxial Loading ◽  
Loading Test ◽  
Cement Sample ◽  
Uniform Size ◽  
Palm Shell ◽  
Shell Waste

Enhancing the cement strength through attaching chemical additive has been popular to meet the required condition for a particular well-cementing job. However, due to a low oil-price phenomenon, pouring and additive should be reconsidered because it can raise the cost and make the project become uneconomic. Another additive material in nanocomposite form will be introduced through this experimental study. The nanocomposite material consist of silica nanoparticle, known as “Nanosilica” and a palm-shell-waste, which is abundant in Indonesia. Before making a nanocomposite, the palm-shell should be burned to obtain a charcoal form, ground and sieved to attain a uniform size.   The study focuses on the two parameters, compressive strength and shear bond strength, which can reflect the strength of the cement. These values are obtained by performing a biaxial loading test to the cement sample. Various samples with different concentration of nanocomposite should be prepared and following the mixing, drying, and hardening process before the loading test is carried out. The result from the test shows a positive indication for compressive strength and shear bond strength values, according to the representative well cementing standards. Increasing the nanocomposite concentration on the cement will increase these values. Furthermore, an investigation on the temperature effect confirms that the sample with 700oC burning temperature have highest compressive-strength and shear-bond-strength values. This is a potential opportunity utilizing a waste-based material to produce another product with higher economic value.

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