cement indiasand cement interface

Effects of Cement–Polymer Interface Properties on ...

2017-4-13 · cement-based composites, cement material and chemical composi-tionsneedtobecharacterized,wellunderstood,andthenimproved. In portland cement, the raw materials are limestone and clay. Hence, a typical composition of portland cement is approximately 67% calcium oxide (CaO) and 22% silicon dioxide (SiO2), with mainly alite and …CEMENT PASTE AGGREGATE INTERFACE …properties which impact on the performance of mortars and concrete. Farran (1) was among the first to note that the interface formed between aggregate and ''_ulk" cement paste was not sharp, and that the cement paste in contact with the a_m''egate differed from the ''_ulk" cement paste. Barnes et al. (2,3) and more recently Yuan and Odler

Well Integrity Analysis: 3D Numerical Modeling of Cement ...

For example, with initial cracks in the cement interface, debonding fractures tend to develop vertically along the axis of a vertical well, rather than circumferentially around it. The method proposed herein presents a useful step towards prediction of well integrity and provides improved guidance for cement selection and completion optimization.The Cement-to-Formation Interface in Zonal Isolation | SPE ...2005-9-14 · Summary. Maintaining zonal isolation for the lifetime of oil and gas wells is critical. Leakage behind casing can reduce the cost effectiveness of the well and cause health and safety risks from pressure buildup and contaminated aquifers. During the completion and production phases of the well, temperature and pressure variations can cause stresses at the cement-to …

Permeability evolution of rock-concrete interfaces in ...

2021-7-1 · For hardened cement paste commonly used to seal the rock-concrete interface, the porosity and permeability are mainly related to its dry density. 15 The cemented interface between the normal concrete and ultra-high-performance concrete negligibly affects the permeability of the combined concrete because of the excellent bonding strength, 16 ...Experimental and numerical analysis of interfacial bonding ...2019-5-20 · The pullout strength of PP/cement interface is comparatively higher than Singh and Pakravan''s results, and equal to Maida''s results. Based on the same diameter, the pull-out test results of C-POM/cement interface versus PP/cement interface and S-POM/cement interface versus PET/cement interface are contrastively analyzed.

Experimental micromechanics of the cement–bone …

The contact interface was more compliant (p = 0.0001) in tension (0.0067 ± 0.0039 mm/MPa) than compression (0.0051 ± 0.0031 mm/MPa), and substantial hysteresis occurred due to sliding contact between cement and bone. The tensile strength of the cement–bone interface was inversely proportional to the compliance of the interface and ...Experimental Study on Mechanical Properties of Interface ...2021-3-17 · The bonding behaviors of the plate-concrete interface of a composite structure consisting of a concrete block in the middle and two cement plates at both sides play a key role in its overall mechanical performance. In this paper, the authors conduct 3 groups of push-out shear tests on a total of 39 composite samples to assess the bonding performance.

Mechanical Behavior of the Rock-Concrete Interface for a ...

2022-2-7 · Traditionally, the numerical simulation work of a bridge gravity anchorage structure is performed with a continuous method, such as the finite element method (FEM). However, since the rock mass and gravity anchorage structure are assumed to be continuous in the FEM, the interaction between the rock mass foundation and the concrete of the anchorage is not …Evaluation on the Mechanical Performance of Low …2017-8-25 · interface between cement matrix and coarse aggregate of low-quality recycled aggregates to promote their application in concrete mixes. Qualitative improvement will in turn enhance the mechanical performance such as the modulus of elasticity and strength, and it will be possible to manufacture

An Unconventional Study on the Bond Strength of the …

2019-12-2 · To show this, laboratory evaluations on the shear and tensile bonding strength of the cement/steel interface were completed for nanoparticle barite and magnetite concentrations of 1%, 3%, and 5% by weight of cement using specially made apparatuses. Each apparatus was designed such that the cement slurry was allowed to set on top of a steel coin ...Well Integrity Analysis: 3D Numerical Modeling of Cement ...For example, with initial cracks in the cement interface, debonding fractures tend to develop vertically along the axis of a vertical well, rather than circumferentially around it. The method proposed herein presents a useful step towards prediction of well integrity and provides improved guidance for cement selection and completion optimization.

Effects of Cement–Polymer Interface Properties on ...

2017-4-13 · cement-based composites, cement material and chemical composi-tionsneedtobecharacterized,wellunderstood,andthenimproved. In portland cement, the raw materials are limestone and clay. Hence, a typical composition of portland cement is approximately 67% calcium oxide (CaO) and 22% silicon dioxide (SiO2), with mainly alite and …Effects of Cement–Polymer Interface Properties on ...Hence, a more realistic adhesion energy for the polymer cement interface in each type of fiber-reinforced concrete can be calculated using the actual C/S ratio in the C-S-H gel. The final interaction energies and the computed adhesion energies …

Interface-durability correlations in concrete

2019-4-9 · the open space at the steel cement interface (Pinchin and Tabor 1978). The strength of steel cement interface increases with w/c ratio and the fracture surface is usually of the cement paste-steel interface. The frequency of such failures was 73.3% for mild steel and 80.3% for stainless steel, after 7 days of curing. .. aracterization of the Microstructure of the Cement ...2021-6-16 · Integrity of the cement/casing interface is an essential element of establishing an effective barrier system in cased and cemented wellbores. Failure to establish and maintain an effective barrier can result in negative environmental and economic impacts, such as leakage of formation fluids into the environment or loss of production and costly remediation.

Structural to interfacial fracture transition in epoxy ...

2021-12-6 · This is mainly because of the lower fracture energy of the cement paste as compared to the interface and epoxy. The peak load obtained for all the cases considered is nearly similar. While for 28 and 50-days hydrated cement paste, adhesive (interface) failure between cement paste and epoxy was observed for case (a).ESCS Aggregate/Cement Interface - ESCSI2022-1-15 · Core samples taken from hulls of 80-year-old lightweight concrete ships as well as 40 to 50-year-old lightweight concrete bridges reveal that the concrete has a dense contact zone at the lightweight aggregate/cement matrix interface. This zone has very low levels of microcracking throughout the cement mortar matrix (Sturm et al. 1999).

Interface and crack propagation of cement-based …

2020-1-24 · Interface and crack propagation of cement-based composites with sulfonated asphalt and plasma-treated rock Construction and Building Materials ( IF 6.141) Pub Date : 2020-01-24, DOI: Chunmei Zhang, Jingxuan Cai, Xiaowei Cheng, Xingguo Zhang, Xiaoyang Guo, Yuntao LiInvestigation of the interface cracks on the cement sheath ...2021-5-25 · Wellbore integrity problem induced by insufficient seal ability of the cement sheath has become a technical challenge of shale gas wells during hydraulic fracturing. In this paper, a new model has been established to characteristic the mechanics of the casing-cement interface (CCI) and the cement-formation interface (CFI) of the shale gas wells.

Fracture Mechanisms of Polymer Cement Mortar: …

Polymer cement mortar (PCM) possesses higher flexural strength, ductility, and impermeability and achieves better adhesion to sub- strate concrete than normal cement mortars.The formation of cracks at cement interfaces of different ...2013-4-27 · The cement–bone interface presented more cracks than in the cement–stem interface and is in accordance with other studies . In this interface, the Müller Straight stem only presented a higher number of cracks in the medial and posterior aspect confirming that the geometry plays differently depending on the type of interface.

CONCRETE-TO-CONCRETE INTERFACES UNDER CYCLIC …

Concrete-to-concrete interfaces are formed in crack planes, construction joints, between con-crete elements cast at different times and in prefabrication. Adding a new concrete layer (e.g.(PDF) Cement Interfaces: Current Understanding, …Cement Interfaces: Current Understanding, Challenges, and Opportunities. Ozge Heinz * and Hendrik Heinz* 1 Department of Chemical and Biological Engineering, University of …

The Cement-to-Formation Interface in Zonal Isolation ...

The mud cake solidification (MCS) at cement-formation interface (CFI) is a key to improve the liner cementing quality and zonal isolation ability for preventing gas migration after hydraulic ...(PDF) Cement interface temperature in hip arthroplastyAbstract. The temperature was measured using thermocouples in the bone-cement interface during cement curing in 30 total hip replacement operations. A modern technique was used, including lavage ...

Factors affecting the cement-post interface

Posts were inserted up to 9-mm depth into composite CAD-CAM blocks (Paradigm, 3M ESPE) in order to solely test the strength of the cement-post interface, while excluding interference of the cement-dentin interface. After 1-week storage at 37 °C, three sections (coronal, middle, apical) of 2-mm thickness were subjected to a push-out bond .. terface and crack propagation of cement-based …2020-1-24 · Interface and crack propagation of cement-based composites with sulfonated asphalt and plasma-treated rock Construction and Building Materials ( IF 6.141) Pub Date : 2020-01-24, DOI: Chunmei Zhang, Jingxuan Cai, Xiaowei Cheng, Xingguo Zhang, Xiaoyang Guo, Yuntao Li

(PDF) Damage mechanisms at the cement-implant …

J_ID: JBM Customer A_ID: JBMB33739 Cadmus Art: JBMB33739 Ed. Ref. No.: JBMR-B-15-0703.R2 Date: 16-June-16 Stage: Page: 1 Damage mechanisms at the cement–implant interface of polished cemented femoral stems AQ6 Natalie Shearwood-Porter,1 Martin Browne,1 James A. Milton,2 Matthew J. Cooper,2 Martin R. Palmer,2 Jeremy M. Latham,3 Robert J. K. Wood,4 …The Cement-to-Formation Interface in Zonal Isolation ...The mud cake solidification (MCS) at cement-formation interface (CFI) is a key to improve the liner cementing quality and zonal isolation ability for preventing gas migration after hydraulic ...

CEMENT PASTE AGGREGATE INTERFACE …

properties which impact on the performance of mortars and concrete. Farran (1) was among the first to note that the interface formed between aggregate and ''_ulk" cement paste was not sharp, and that the cement paste in contact with the a_m''egate differed from the ''_ulk" cement paste. Barnes et al. (2,3) and more recently Yuan and OdlerESCS Aggregate/Cement Interface - ESCSI2022-1-15 · Core samples taken from hulls of 80-year-old lightweight concrete ships as well as 40 to 50-year-old lightweight concrete bridges reveal that the concrete has a dense contact zone at the lightweight aggregate/cement matrix interface. This zone has very low levels of microcracking throughout the cement mortar matrix (Sturm et al. 1999).

Experimental Micromechanics of the Cement–Bone Interface

Postoperatively the bone–cement interface may be immediately compromised due to cement polymerizing heat necrosis, 1 the reaming process, 2 or local monomer toxicity. 3 Hence, a small layer of inferior tissue could develop between cement and bone that may make the interface more compliant, reduce its strength, and lead to early implant .. vestigation of the interface cracks on the cement sheath ...2021-5-25 · Wellbore integrity problem induced by insufficient seal ability of the cement sheath has become a technical challenge of shale gas wells during hydraulic fracturing. In this paper, a new model has been established to characteristic the mechanics of the casing-cement interface (CCI) and the cement-formation interface (CFI) of the shale gas wells.

A cement paste–tail sealant interface modified with a ...

interface of cement–tail sealant is most susceptible to water leakage in the long run because of the mismatch in their mechanical properties and durability that leads to the forma-tion of interfacial gap. Therefore, improving the chemical compatibility and …The steel–concrete interface | SpringerLink2017-2-27 · Although the steel–concrete interface (SCI) is widely recognized to influence the durability of reinforced concrete, a systematic overview and detailed documentation of the various aspects of the SCI are lacking. In this paper, we compiled a comprehensive list of possible local characteristics at the SCI and reviewed available information regarding their properties as well …

Mechanical Behavior of the Rock-Concrete Interface for a ...

2022-2-7 · Traditionally, the numerical simulation work of a bridge gravity anchorage structure is performed with a continuous method, such as the finite element method (FEM). However, since the rock mass and gravity anchorage structure are assumed to be continuous in the FEM, the interaction between the rock mass foundation and the concrete of the anchorage is not …An Unconventional Study on the Bond Strength of the …2019-12-2 · To show this, laboratory evaluations on the shear and tensile bonding strength of the cement/steel interface were completed for nanoparticle barite and magnetite concentrations of 1%, 3%, and 5% by weight of cement using specially made apparatuses. Each apparatus was designed such that the cement slurry was allowed to set on top of a steel coin ...

Effects of Cement–Polymer Interface Properties on ...

2017-4-13 · cement-based composites, cement material and chemical composi-tionsneedtobecharacterized,wellunderstood,andthenimproved. In portland cement, the raw materials are limestone and clay. Hence, a typical composition of portland cement is approximately 67% calcium oxide (CaO) and 22% silicon dioxide (SiO2), with mainly alite and …Experiment and simulation on the integrity of cement ring ...2020-2-27 · The integrity of cement ring interface is critical for the safe production of crude oil and nature gas and the protection of marine environment in deep water shallow formation. Due to the slow hydration speed of the cement under low temperature and the ...

Thermal Expansion, Fluid Flow, and Thermal Shock of …

2020-2-27 · TSR cement and the interface of these materials in the form of a TSR cement sheathed pipe. This paper evaluates Thermal Shock-Resistant Cement (TSRC) developed by Brookhaven National Laboratory (BNL)1. Our work focused on thermal expansion, and fluid flow through the TSRC, and the application of thermal shock to a steel/TSRC sheathed sample. ...A cement paste–tail sealant interface modified with a ...A cement paste–tail sealant interface modified with a silane coupling agent for enhancing waterproofing performance in a concrete lining system F. Li, Y. Yang, M. Tao and X. Li, RSC Adv., 2019, 9, 7165 DOI: 10.1039/C8RA10457C

A cement paste–tail sealant interface modified with a ...

A cement paste–tail sealant interface modified with a silane coupling agent for enhancing waterproofing performance in a concrete lining system F. Li, Y. Yang, M. Tao and X. Li, RSC Adv., 2019, 9, 7165 DOI: 10.1039/C8RA10457CExperimental micromechanics of the cement–bone …The contact interface was more compliant (p = 0.0001) in tension (0.0067 ± 0.0039 mm/MPa) than compression (0.0051 ± 0.0031 mm/MPa), and substantial hysteresis occurred due to sliding contact between cement and bone. The tensile strength of the cement–bone interface was inversely proportional to the compliance of the interface and ...

Fracture Mechanisms of Polymer Cement Mortar: …

Polymer cement mortar (PCM) possesses higher flexural strength, ductility, and impermeability and achieves better adhesion to sub- strate concrete than normal cement mortars.ESCS Aggregate/Cement Interface - ESCSI2022-1-15 · Core samples taken from hulls of 80-year-old lightweight concrete ships as well as 40 to 50-year-old lightweight concrete bridges reveal that the concrete has a dense contact zone at the lightweight aggregate/cement matrix interface. This zone has very low levels of microcracking throughout the cement mortar matrix (Sturm et al. 1999).

Does Increased Bone–Cement Interface Strength have ...

2008-12-16 · Cemented total hip arthroplasty (THA) is the most popular method of treatment of osteoarthritis and other disorders affecting the hip joint.19 It is generally accepted that long-term durability of cemented THA requires meticulous attention to three elements and their two corresponding interfaces, which are in this order: femoral stem, stem–cement interface, …Detailing of concrete-to-concrete interfaces for improved ...2018-2-1 · Different and alternative design strategies were used for the casting interfaces of the specimens. According to Cavaco and Camara, a premature and pronounced cracking along the interface in the tension zone was observed due to the bending moment effect and reduced tensile strength of the interface, smaller than that of the weakest concrete.This abnormality, in …

The steel–concrete interface | SpringerLink

2017-2-27 · Although the steel–concrete interface (SCI) is widely recognized to influence the durability of reinforced concrete, a systematic overview and detailed documentation of the various aspects of the SCI are lacking. In this paper, we compiled a comprehensive list of possible local characteristics at the SCI and reviewed available information regarding their properties as well …Challenges in the Measurement and Interpretation of ...2021-6-18 · Leakage of wells along the interface between cement and steel is one of the primary failure mechanisms for loss of zonal isolation (e.g., Bellabarba et al. 2008; Bois et al. 2011). While cement bond logs have been used for many years (Boyd et al. 2006) to characterize the possible existence of a gap (or microannulus) between steel and cement ...