Study of Fly Ash in Making Cementitious Composites

2015 ◽  
Vol 806 ◽  
pp. 127-134
Author(s):  
Dragica Jevtić ◽  
Dimitrije Zakić ◽  
Aleksandar Savić ◽  
Veis Šerifi
Keyword(s):  
Fly Ash ◽  
Experimental Research ◽  
Civil Engineering ◽  
Plain Concrete ◽  
Building Industry ◽  
Cementitious Composites ◽  
Self Compacting Concrete

Applications of fly ash in building industry have very important and relevant problems of origin which are discussed in this paper. Authors have performed tests on mortar, plain concrete and Self Compacting Concrete (SCC) specimens. Experiments showed satisfactory results concerning possible application of fly ash as admixture for cementitious composites. Experimental research was conducted in the Laboratory for materials at the Faculty of Civil Engineering, University of Belgrade.

Overview of Sustainable Cementitious Composites Properties with Added Recycled Rubber

2015 ◽  
Vol 806 ◽  
pp. 119-126
Author(s):  
Dragica Jevtić ◽  
Dimitrije Zakić ◽  
Aleksandar Savić ◽  
Veis Šerifi
Keyword(s):  
Experimental Research ◽  
Partial Replacement ◽  
Cementitious Composites ◽  
Engineering Practice ◽  
Self Compacting Concrete ◽  
Ordinary Concrete ◽  
Recycled Rubber

The paper is focused to the properties of cementitious composites such as: mortar, ordinary concrete and self-compacting concrete made by means of recycled rubber granulate as a partial replacement for commonly used aggregate. This paper, together with the results of authors' own experimental research on rubberized cementitious composites is presented in detail. The comprehensive conclusion suggests that this type of material can be successfully applied in many fields of engineering practice, thanks to its sustainability, elasticity and durability.

Fresh and mechanical characteristics of roselle fibre reinforced self-compacting concrete incorporating fly ash and metakaolin

2021 ◽  
Vol 290 ◽  
pp. 123209
Author(s):  
R. Prakash ◽  
Sudharshan N. Raman ◽  
N. Divyah ◽  
C. Subramanian ◽  
C. Vijayaprabha ◽  
...  
Keyword(s):  
Fly Ash ◽  
Mechanical Characteristics ◽  
Self Compacting Concrete

scholarly journals Cements with calcareous fly ash as component of low clinker eco-self compacting concrete

2019 ◽  
Vol 9 (1) ◽  
pp. 196-201
Author(s):  
Jacek Gołaszewski ◽  
Grzegorz Cygan ◽  
Tomasz Ponikiewski ◽  
Małgorzata Gołaszewska
Keyword(s):  
Fly Ash ◽  
Hardened Concrete ◽  
Self Compacting Concrete ◽  
Basic Properties ◽  
Ecological Self ◽  
Different Types ◽  
Hardened State ◽  
Main Component ◽  
New Generation ◽  
Good Workability

AbstractThe main goal of the presented research was to verify the possibility of obtaining ecological self-compacting concrete of low hardening temperature, containing different types of cements with calcareous fly ash W as main component and the influence of these cements on basic properties of fresh and hardened concrete. Cements CEM II containing calcareous fly ash W make it possible to obtain self-compacting concrete (SCC) with similar initial flowability to analogous mixtures with reference cement CEM I and CEM III/B, and slightly higher, but still acceptable, flowability loss. Properties of hardened concretes with these cements are similar in comparison to CEM I and CEM III concretes. By using cement nonstandard, new generation multi-component cement CEM “X”/A (S-W), self-compacting concrete was obtained with good workability and properties in hardened state.

scholarly journals Ternary Mixes of Self-Compacting Concrete with Fly Ash and Municipal Solid Waste Incinerator Bottom Ash

2020 ◽  
Vol 11 (1) ◽  
pp. 107
Author(s):  
B. Simões ◽  
P. R. da Silva ◽  
R. V. Silva ◽  
Y. Avila ◽  
J. A. Forero
Keyword(s):  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bottom Ash ◽  
Chloride Diffusion ◽  
Waste Incinerator ◽  
Chloride Diffusion Coefficient ◽  
Municipal Solid Waste Incinerator ◽  
Self Compacting Concrete ◽  
Solid Waste Incinerator

This study aims to evaluate the potential of incorporating fly ash (FA) and municipal solid waste incinerator bottom ash (MIBA) as a partial substitute of cement in the production of self-compacting concrete mixes through an experimental campaign in which four replacement levels (i.e., 10% FA + 20% MIBA, 20% FA + 10% MIBA, 20% FA + 40% MIBA and 40% FA + 20% MIBA, apart from the reference concrete) were considered. Compressive and tensile strengths, Young’s modulus, ultra-sonic pulse velocity, shrinkage, water absorption by immersion, chloride diffusion coefficient and electrical resistivity were evaluated for all concrete mixes. The results showed a considerable decline in both mechanical and durability-related performances of self-compacting concrete with 60% of substitution by MIBA mainly due to the aluminium corrosion chemical reaction. However, workability properties were not significantly affected, exhibiting values similar to those of the control mix.

Self Compacting Concrete Structures: A Techno-Economic Analysis

2017 ◽  
Vol 21 ◽  
pp. 624-631 ◽  
Author(s):  
Nicolae Cazacu ◽  
Aurelia Bradu ◽  
Nicolae Florea
Keyword(s):  
Mechanical Characteristics ◽  
Concrete Surface ◽  
Mix Design ◽  
Building Industry ◽  
Skilled Workers ◽  
Self Compacting Concrete ◽  
Construction Time ◽  
Placement Method ◽  
Global Cost

The concept of self-compacting concrete (SCC) was performed in late 1980 by Japanese researchers as a solution for the lack of skilled workers and decreasing quality in building industry. The high fluidity of SCC allows flowing under its own weight, filling completely the formwork without any vibration or material segregation, providing a higher quality of the concrete surface. Since its discovery, a large number of researcher studied its rheological properties, adjusted mix design methods and analysed mechanical characteristics. The placement method for conventionally concrete is no more valid for SCC, as mixture behaviour changed substantially. This aspect was less examined and the published material is inconsistent, even though it plays an essential role in the assessment of the global cost of a building. The aim of this study is to investigate materials cost, the labour requirements, formwork demands, methods of placement and construction time for building a structure using SCC and vibrated concrete and compare the results.

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