نتایج جستجو برای: chemically durable concretes

تعداد نتایج: 43720  

Journal: :Vitruvio 2023

The aim of the research is laboratory study a durable concrete, according to UNI-EN 206-1 and 11104, comparing four types concrete by varying type binder highlight some aspects durability. For each graph correlations between: W/C ratio - resistance; cement dosage strength; days ripening-resistance; three mixes were packaged dosage. Three concretes then designed, way example, with resistance cla...

2008
Howard E. Strassler

The clinical success of adhesive composite-resin restorations has changed the way that dentists treatment plan and treat periodontally mobile teeth. While adhesive composite resin provides for strong, durable, and esthetic single-tooth restorations, when placed to join teeth together, these materials—which are chemically brittle by nature—are susceptible to fracture and are not durable. When su...

ژورنال: علوم آب و خاک 2011
رضا خدادادی, , جهانگیر عابدی کوپایی, , سید سعید اسلامیان, , سید علیرضا گوهری, ,

Channel lining is essential to increase resistance against scour, reducing water losses and as a result increase water conveyance efficiency. Since the canal lining has significant costs, selection of type of lining must be made with great care and with considering engineering properties. One of the conventional lining for water conveyance cannel is concrete lining. Because of advantages of con...

Ali Delnavaz Mohammad Reza Pezeshkian

As regards if curing stops for some time and then resumes again, then strength gain will also stop and reactive, in this study with choose suitable curing conditions after improper first curing (recurring) for normal and silica-fume concrete, Effect of this curing conditions on strength and permeability was investigated. The results from tests such as compressive strength, capillary water absor...

Journal: :Journal of Leather Science and Engineering 2021

Abstract Developing high-performance separation membrane with good durability is a highly desired while challenging issue. Herein, we reported the successful fabrication of chemically and mechanically durable superhydrophobic that was prepared by embedding UiO-66 as size-sieving sites within supramolecular fiber structure collagen (CFM), followed polydimethylsiloxane (PDMS) coating. The as-prep...

Journal: :Revista IBRACON de Estruturas e Materiais 2021

abstract: Ultra-high performance concretes with steel microfibers have been studied in depth the aim of producing more efficient and durable structures. The these materials depends on characteristics interface between cementitious matrix. This research investigates micro-nanomechanical properties interfacial transition zone matrix ultra-high composite. effect water/cement ratio distance from mi...

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....

2009
J. L. Provis

Geopolymer concretes are currently being commercialised in Australia and elsewhere around the world, with a view towards enhancing the sustainability of the world’s construction industry. The fundamental geopolymer binder is an aluminosilicate gel which displays key structural features on every length scale from Ångstroms up to centimetres, meaning that multiscale analysis is key to the develop...

2008
Jerry Stephens Lynne Leach

DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclose...

2009
Sergey V. Dorozhkin

In early 1980s, researchers discovered self-setting calcium orthophosphate cements, which are a bioactive and biodegradable grafting material in the form of a powder and a liquid. Both phases form after mixing a viscous paste that after being implanted, sets and hardens within the body as either a non-stoichiometric calcium deficient hydroxyapatite (CDHA) or brushite, sometimes blended with unr...

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