نتایج جستجو برای: cement composites

تعداد نتایج: 72351  

Journal: :Maderas-ciencia Y Tecnologia 2023

In this study, the purpose was to improve outdoor performance of cement bonded wood composite due their biodegradation and sensitivity moisture especially in warm humid climates. Cement composites were treated with different concentrations (10 %, 25 50 75 % 100 %) water repellent. Water repellent used an organo-silicon based, nano-sized, eco-friendly, water-based agents. Dipping pressure system...

Journal: :ACS Applied Materials & Interfaces 2021

The development of radically new types corrosion-resistant cement composites is nowadays compulsory in view the continuous increase concrete consumption combined with intrinsically defective nature concrete. Among various additives being employed technology, carbon nanomaterials have emerged as extremely powerful components capable remarkably enhancing nano- and microstructures well properties ...

Journal: :Acta Scientiarum-technology 2022

This study aimed to evaluate the influence of adding plastic bottle fibers soil-cement mixtures and possible improvements generated by addition a blend two types additives, namely, additive 1 (waterproofing improver) 2 (adhesion enhancer), in compactability shear strength parameters soil-cement-plastic fiber mixtures, considering tropical residual soil. The used this are made Polyethylene Terep...

Journal: Pollution 2015

Agricultural waste fibers have been found to be suitable as reinforcement in cement-based composites, but studies on oil palm fiber as reinforcement in gypsum-cement wall panels are scarce. A mixture of two equal weights of gypsum and cement, with water-binder ratios of 0.45 and 0.55 were prepared. In each mix a varying percentage of fiber contents of 2%, 3% and 4% by weight of the binders were...

Journal: :Journal of Cleaner Production 2022

In this work, we present the development and characterisation of new cement-based composite panels reinforced with fibres recovered from wastes protective technical clothing. The developed a flexural strength (?15 MPa) fracture toughness (?3.5 kJ/m 2 ) that are suitable for their application on ventilated façades. environmental impact these was evaluated through life-cycle assessment (LCA) crad...

Journal: :Plasma Processes and Polymers 2021

This study evaluates the effectiveness of using different plasma treatments to favor compatibility between rubber and a cement matrix in composites, thus leading surface reactivity component. Plasma-treated rubbers were introduced into two types concrete. Mechanical tests highlighted that Portland concrete composites filled with N2/H2 plasma-treated had increased flexural strength, toughness, c...

2014
María del Carmen Camacho Oscar Galao Francisco Javier Baeza Emilio Zornoza Pedro Garcés

In the present paper, changes in mechanical properties of Portland cement-based mortars due to the addition of carbon nanotubes (CNT) and corrosion of embedded steel rebars in CNT cement pastes are reported. Bending strength, compression strength, porosity and density of mortars were determined and related to the CNT dosages. CNT cement paste specimens were exposed to carbonation and chloride a...

2016
Guillermo Bastos Faustino Patiño-Barbeito Faustino Patiño-Cambeiro Julia Armesto

Research on cement-based materials is trying to exploit the synergies that nanomaterials can provide. This paper describes the findings reported in the last decade on the improvement of these materials regarding, on the one hand, their mechanical performance and, on the other hand, the new properties they provide. These features are mainly based on the electrical and chemical characteristics of...

2014

Emphasis on the advancement of new materials and technology has been there for the past few decades. The global development towards using cheap and durable materials from renewable resources contributes to sustainable development. An experimental investigation of mechanical behaviour of sisal fibrereinforced concrete is reported for making a suitable building material in terms of reinforcement....

2015
L. Ferrara

ID No:180 ABSTRACT In this paper aims a thorough characterization will be performed of the effects of crystalline admixtures, currently employed as porosity reducing admixtures, on the self-healing capacity of the cementitious composites, i.e. their capacity to completely or partially re-seal cracks and, in case, also exhibit recovery of mechanical properties.In this paper aims a thorough chara...

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