نتایج جستجو برای: concrete workability

تعداد نتایج: 77113  

Journal: :Journal of Renewable Materials 2023

This study focuses on the workability and compressive strength of ceramsite self-compacting concrete with fine aggregate partially substituted by steel slag sand (CSLSCC) to prevent pollution in environment. The SF, J-ring, visual stability index, sieve analysis tests are primarily employed this research investigate freshly mixed containing at various replacement rates. experiment results indic...

Journal: :IOP conference series 2021

Abstract Geopolymer in recent years is being deemed as a promising alternative to cement concrete, which has remained backbone of the construction industry. Despite GPC having potential capability reducing carbon footprint, still many its characteristics and mechanism be investigated. The present study represents utilization bagasse ash production geopolymer concrete. In order reduce ecological...

Journal: :Applied sciences 2022

With the accelerating growth of infrastructure construction, carbon emission and environmental pollution problems have become increasingly severe. In order to promote sustainable development construction industry, using rice husk ash (RHA) in recycled aggregate concrete has aroused extensive interest. This study aims investigate impact partial replacement (0%, 10%, 20%, 30% binder) ordinary Por...

Journal: :international journal of civil engineering 0
a.r. hariharan structural & geotechnical engineering division, smbs, vit university, vellore-632014, india a.s. santhi structural & geotechnical engineering division, smbs, vit university, vellore-632014, india g. mohan ganesh structural & geotechnical engineering division, smbs, vit university, vellore-632014, india

this research paper presents the use of wasteful supplementary cementitious materials like fly ash and silica fume to conserve the cement used in concrete. the cement industry is one of the major producers of greenhouse gases and an energy user. in this study, portland cement was used as a basic cementitious material. fly ash and silica fume were used as the cement replacements by weight. the r...

Journal: :Journal of innovative science and engineering 2022

Concrete is the most common building material used worldwide. Significantly high strength values have been achieved owing to developing technology. Besides compressive strength, durability properties should also be taken into consideration since concrete exposed several external effects throughout its service life. Durability are mainly associated with voids in internal structure and surface of...

Journal: :Journal of composites science 2021

Different types of recycled plastic have been used in concrete and most studies focused on the behaviour a single type plastic. However, separating wastes increases cost time processing. To tackle this problem, research presents an experimental investigation to determine effect incorporating different combinations three waste aggregates—Polyethylene terephthalate (PET), High Density Polyethylen...

Journal: :Applied sciences 2021

This study presents the performance of quarry rock dust (QRD) incorporated fly ash (FA) and slag (SG) based geopolymer concretes (QFS-GPC) exposed to ambient elevated temperatures. A total five QFS-GPC mix types were prepared. The quantity FA (50%) was kept constant in all mixes, SG replaced by 5%, 10%, 15%, 20% QRD. fresh, hardened properties viz., workability, compressive strength, splitting ...

Journal: :International Journal of Sustainable Engineering 2022

Using waste plastics as a partial natural aggregate replacement and monitoring strength workability reduction in pavement structures is vital to net-carbon zero. This study explores the utilisation of plastic fine medium-strength reinforced concrete pavements, for improving performance intrinsic reasoning observed performance. Various weight fractions fines were substituted by same aggregates r...

2013

A self-compacting concrete (SCC) is the one that can be placed in the form and can go through obstructions by its own weight and without the need of vibration. Since its first development in Japan in 1988, SCC has gained wider acceptance in Japan, Europe and USA due to its inherent distinct advantages. Although there are visible signs of its gradual acceptance in the North Africa through its li...

2016
B A. Whiting T J. McCarthy

Recycled concrete aggregates (RCA) are used in new concrete mixes, termed recycled aggregate concrete (RAC). Among losses in most fresh and hardened properties, literature reports that RAC suffers increased levels of drying shrinkage compared to equivalent mixes incorporating conventional aggregates. This paper describes the procedure and results of a range of experiments conducted on a commerc...

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