4.6 Article

A toughening mechanism of the strain rate-optimal chain length on polymer-modified calcium silicate hydrates (CSH)

Related references

Note: Only part of the references are listed.
Article Multidisciplinary Sciences

Multi-layered cement-hydrogel composite with high toughness, low thermal conductivity, and self-healing capability

Yuan Chen et al.

Summary: By preparing a rigid layered skeleton of cement slurry and introducing flexible polyvinyl alcohol hydrogel into the unidirectional pores, a multi-layered cement-based composite with significantly improved toughness was achieved. The toughening mechanism involves stretching of hydrogels at the nano-scale and deflections of micro-cracks at the interfaces, which prevent stress concentration and dissipate energy. Furthermore, this cement-hydrogel composite exhibits low thermal conductivity, low density, high specific strength, and self-healing properties, making it suitable for applications such as thermal insulation, seismic high-rise buildings, and long-span bridges.

NATURE COMMUNICATIONS (2023)

Article Construction & Building Technology

Experimental study on interfacial damage mechanisms of polymer-concrete composite structure

Chengchao Guo et al.

Summary: This paper investigates the interface bonding characteristics of polymer-concrete structures through direct shear tests and the use of acoustic emission and digital image correlation techniques. The results show that the shear failure occurs mainly at the interface, and there are three stages of acoustic emission activities during the failure process. The interface damage between polymer and concrete can be qualitatively predicted based on the increase of accumulated acoustic emission ringing count and energy. The interfacial failure mainly occurs in the cement mortar layer near the interface.

JOURNAL OF BUILDING ENGINEERING (2023)

Article Construction & Building Technology

Experimental assessment of the efficiency of deep learning method in predicting the mechanical properties of polymer concretes and composites

Mostafa Hassani Niaki et al.

Summary: This study investigates the usefulness of a deep learning-based method, DNN, in predicting the mechanical properties of basalt fiber and nanoclay reinforced polymer concrete. The study presents three independent DNN models and achieves satisfactory accuracy in predicting the properties of PC. The results demonstrate the effectiveness of the deep learning method in predicting PC properties.

JOURNAL OF BUILDING ENGINEERING (2023)

Article Construction & Building Technology

Experimental investigations on the mechanical properties and damage detection of carbon nanotubes modified crumb rubber concrete

Suliman Khan et al.

Summary: This study presents the mechanical characterization and cracking monitoring of a modified crumb rubber (MCR) concrete design mix reinforced with multiwalled carbon nanotubes (MWCNTs) using the acoustic emission (AE) technique. The results showed that the bridging effect of MWCNTs and MCR in the concrete mix improved the flexural and compressive strengths by 18.3% and 26.5%, respectively. The MWCNT-MCR concrete exhibited improved ductility, axial strain, and toughness compared to the reference specimens.

JOURNAL OF BUILDING ENGINEERING (2023)

Article Construction & Building Technology

A deep learning potential applied in tobermorite phases and extended to calcium silicate hydrates

Yang Zhou et al.

Summary: Based on first-principle simulations, machine learning potentials (MLPs) are used to accurately predict complex material systems and efficiently perform molecular dynamics (MD) computations. In this study, MLPs of different lengths of tobermorite are constructed using the Deep Potential (DP) method and their accuracy and efficiency are assessed through MD simulations. The results show that MLPs exhibit high consistency with ab initio MD simulations in terms of accuracy, while being 2 to 3 orders of magnitude faster. Additionally, the MLPs are applied to the calcium silica hydrates system, and the calculated structure and mechanical properties align well with experimental results, demonstrating the feasibility and accuracy of MLPs for larger scale MD simulations on cement-based materials.

CEMENT AND CONCRETE RESEARCH (2022)

Article Construction & Building Technology

Mechanical properties and material characterization of cement mortar incorporating CNT-engineered polyvinyl alcohol latex

Gengying Li et al.

Summary: This study explores the potential of incorporating nano-engineered polyvinyl alcohol (PVA) latex in cement mortars to overcome their brittle nature. Hydroxyl carbon nanotubes (CNT-OH) were used to enhance the mechanical properties of PVA latex. The results showed that CNT-OH/PVA latex significantly improved the tensile and compressive strength, flexural strength, fracture toughness, and fracture energy of cement mortars. This improvement was attributed to the uniform dispersion of CNT-OH/PVA latex, acceleration of hydration, chemical and hydrogen bonds between CNT-OH/PVA latex and cementitious matrix, and prevention of cracking and refinement of microstructure in mortars. These findings provide valuable insights for the design of high-performance cementitious materials.

CONSTRUCTION AND BUILDING MATERIALS (2022)

Review Construction & Building Technology

The role of organic polymer modifiers in cementitious systems towards durable and resilient infrastructures: A systematic review

Nghia P. Tran et al.

Summary: This paper reviews the key role and mechanisms of organic polymers in cementitious systems, and the potential prospects for improving the long-term cost-effectiveness and serviceability of cementitious materials. It summarizes the multiple functions that organic polymers can play in cement systems, including repair, reinforcement, corrosion resistance, and waterproofing. The paper also highlights the impact of polymer addition on cement structures, as well as the challenges faced and the need for future research and development in the field of polymer-modified concrete.

CONSTRUCTION AND BUILDING MATERIALS (2022)

Proceedings Paper Materials Science, Multidisciplinary

Studies on the influence of alginate as a natural polymer in mechanical and long-lasting properties of concrete - A review

V Murugappan et al.

Summary: Green concrete material plays a significant role in achieving sustainable development, and alginate derived from marine brown seaweed acts as a natural polymer to enhance the properties of concrete.

MATERIALS TODAY-PROCEEDINGS (2022)

Proceedings Paper Materials Science, Multidisciplinary

Mechanical properties of self curing concrete studied using polyethylene glycol-400: A-review

Khushpreet Singh

Summary: The global practice in concrete technology is rapidly developing, with self-curing concrete using Polyethylene Glycol-400 (PEG) as a chemical agent showing promise in reducing self-desiccation and improving mechanical characteristics. Previous studies have focused on internal curing agents to address issues related to improper curing and self-desiccation in concrete.

MATERIALS TODAY-PROCEEDINGS (2021)

Article Construction & Building Technology

Study of optimizing graphene oxide dispersion and properties of the resulting cement mortars

Xiantong Yan et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

Article Chemistry, Physical

Insights into the interfacial strengthening mechanisms of calcium-silicate-hydrate/polymer nanocomposites

Yang Zhou et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2018)

Article Nanoscience & Nanotechnology

Interfacial Connection Mechanisms in Calcium-Silicate-Hydrates/Polymer Nanocomposites: A Molecular Dynamics Study

Yang Zhou et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

Article Chemistry, Physical

Reactive molecular simulation on the calcium silicate hydrates/polyethylene glycol composites

Yang Zhou et al.

CHEMICAL PHYSICS LETTERS (2017)

Article Nanoscience & Nanotechnology

Screw-Dislocation-Induced Strengthening-Toughening Mechanisms in Complex Layered Materials: The Case Study of Tobermorite

Ning Zhang et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

Article Construction & Building Technology

Chloride ions transport and adsorption in the nano-pores of silicate calcium hydrate: Experimental and molecular dynamics studies

Yang Zhou et al.

CONSTRUCTION AND BUILDING MATERIALS (2016)

Article Materials Science, Ceramics

Fracture toughness of calcium-silicate-hydrate from molecular dynamics simulations

M. Bauchy et al.

JOURNAL OF NON-CRYSTALLINE SOLIDS (2015)

Article Multidisciplinary Sciences

Toughening Elastomers with Sacrificial Bonds and Watching Them Break

Etienne Ducrot et al.

SCIENCE (2014)

Article Construction & Building Technology

Research on the microstructure formation of polyacrylate latex modified mortars

Ye Tian et al.

CONSTRUCTION AND BUILDING MATERIALS (2013)

Article Construction & Building Technology

Microstructures and mechanical properties of polymer modified mortars under distinct mechanisms

Hongyan Ma et al.

CONSTRUCTION AND BUILDING MATERIALS (2013)

Article Chemistry, Physical

Shear deformations in calcium silicate hydrates

Hegoi Manzano et al.

SOFT MATTER (2013)

Article Chemistry, Physical

Simulation of Forces between Humid Amorphous Silica Surfaces: A Comparison of Empirical Atomistic Force Fields

Sabine Leroch et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2012)

Article Chemistry, Multidisciplinary

Confined Water Dissociation in Microporous Defective Silicates: Mechanism, Dipole Distribution, and Impact on Substrate Properties

Hegoi Manzano et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

Article Chemistry, Multidisciplinary

Hydration of Calcium Oxide Surface Predicted by Reactive Force Field Molecular Dynamics

Hegoi Manzano et al.

LANGMUIR (2012)

Article Chemistry, Multidisciplinary

Thermodynamics of Water Confined in Porous Calcium-Silicate-Hydrates

P. A. Bonnaud et al.

LANGMUIR (2012)

Article Construction & Building Technology

Interactions between Organic and Inorganic Phases in PA- and PU/PA-Modified-Cement-Based Materials

Hongyan Ma et al.

JOURNAL OF MATERIALS IN CIVIL ENGINEERING (2011)

Article Physics, Multidisciplinary

Nanostructure of Calcium Silicate Hydrates in Cements

L. B. Skinner et al.

PHYSICAL REVIEW LETTERS (2010)

Article Physics, Multidisciplinary

Atomistic Simulation of Creep in a Nanocrystal

Timothy T. Lau et al.

PHYSICAL REVIEW LETTERS (2010)

Article Construction & Building Technology

Quantitative evaluation technique of Polyvinyl Alcohol (PVA) fiber dispersion in engineered cementitious composites

Bang Yeon Lee et al.

CEMENT & CONCRETE COMPOSITES (2009)

Article Chemistry, Physical

ReaxFF reactive force field for molecular dynamics simulations of hydrocarbon oxidation

Kimberly Chenoweth et al.

JOURNAL OF PHYSICAL CHEMISTRY A (2008)

Article Physics, Multidisciplinary

Encapsulation of floating carbon nanotubes in SiO2

L. Tsetseris et al.

PHYSICAL REVIEW LETTERS (2006)

Article Chemistry, Physical

Organic calcium silicate hydrate hybrids: a new approach to cement based nanocomposites

J Minet et al.

JOURNAL OF MATERIALS CHEMISTRY (2006)

Article Materials Science, Multidisciplinary

Stress-dependent molecular pathways of silica-water reaction

T Zhu et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2005)

Review Construction & Building Technology

Solubility and structure of calcium silicate hydrate

JJ Chen et al.

CEMENT AND CONCRETE RESEARCH (2004)

Article Chemistry, Physical

ReaxFF: A reactive force field for hydrocarbons

ACT van Duin et al.

JOURNAL OF PHYSICAL CHEMISTRY A (2001)