the properties and characteristics of concretes containing
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The Properties and Characteristics of Concretes Containing ...

The purpose of this study was to investigate the efficacy of precipitated calcium carbonate as a means for enhancing the mechanical and environmental favorability of concretes containing synthetic lightweight aggregates (SLA), which are comprised of recycled mixed plastic and fly ash. Compressive strength tests show that 2% calcium carbonate additions are able to mitigate strength decreases ...

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Characteristics of mortar and concrete containing fine ...

2009-8-1  1.. IntroductionSignificant opportunity exists to reduce GHG emissions through the development of energy conscious construction materials .This can be achieved by maximizing the use of waste products, now merely used as landfill .. The advantages of using wastes are twofold: firstly, the use of virgin natural resources is reduced, and secondly, wastes are being disposed of in a safe, effective ...

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Photon attenuation properties of some concretes

2013-1-1  Radiation shielding properties of concretes containing barite and colemanite in different rates were evaluated by using 133 Ba (80.99 and 303 keV) and 241 Am (59.54 keV) radioactive sources. Gamma rays were counted by a NaI(Tl) detector with a resolution of 122 keV at 662 keV.The study reveals that the concretes under research are effective than ordinary concrete for the attenuation of

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(PDF) Engineering properties and durability of concretes ...

For instance in [Ramezanianpour 2010] this method was used to evaluate durability properties of concretes containing limestone cements. For the mixes with no limestone the penetration depth at 28 ...

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Mechanical and durability properties of concretes ...

2016-4-18  This paper investigates the application of natural zeolite as a substitute of cement in concrete. It studies the mechanical and durability properties of concretes containing 10% of natural zeolite and superplasticizer, as well as 10% of natural zeolite, superplasticizer and an air-entraining agent in comparison to concretes without natural zeolite.

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Mechanical and durability properties of ternary concretes ...

2012-5-1  Grade 80 slag has the lowest reactivity among the three grades and the rate of development of properties of concretes containing this slag is slower than the control mix. Development of methods to improve the performance of slags in concrete, particularly the ones with lower reactivity, will facilitate higher utilization of these materials.

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Compressive strength and durability properties of high ...

2015-5-1  This paper presents the effect ultrafine fly ash (UFFA) on compressive strength and durability properties of concretes containing high volume class F fly ash as partial replacement of cement. The compressive strengths are measured at 3, 7, 28, 56 and 90 days, whereas the durability properties are measured at 28 and 90 days.

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Study of the acoustical and thermo-mechanical properties ...

2020-9-30  Study of the acoustical and thermo-mechanical properties of dune and river sand concretes containing recycled plastic aggregates. ... there is no information available concerning the properties of sand concretes based on plastics as aggregates. So, the novelty of this study is the type of the studied material, especially when dealing with an ...

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Types of Concrete Characteristics Concrete Classification

2017-2-14  The concrete in which common ingredients i.e. aggregate, water, cement are used is known as normal concrete.It is also called normal weight concrete or normal strength concrete. It has a setting time of 30 - 90 minutes depending upon moisture in atmosphere, fineness of cement

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Determination and calculation of gamma and neutron ...

2011-12-1  Although concretes containing hematite have desired gamma-ray shielding capability, there has been no effect for hematite addition on neutron shielding properties of the investigated concretes. Finally, it is vital to follow the good geometry conditions in measuring the attenuation characteristics of a shielding material which is successfully ...

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(PDF) Engineering properties and durability of concretes ...

For instance in [Ramezanianpour 2010] this method was used to evaluate durability properties of concretes containing limestone cements. For the mixes with no limestone the penetration depth at 28 ...

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Mechanical properties of three High-Strength Concretes ...

Abstract. Three high-strength concretes containing silica fume were cast and tested at the University of Alberta to study the mechanical properties. The concretes were designed to have compressive ...

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Comparative Investigations of some Properties Related to ...

The results of research of mechanical properties and selected other characteristics influencing durability of cement concretes containing cement substitutes were presented. Cement concretes performed with conventional fly ash, fluidised fly ash and their mixture were investigated. The obtained results were compared with findings registered for two types of concrete performed without cement ...

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Absorption Characteristics of Lightweight Concrete ...

Available online at CivileJournal Civil Engineering Journal Vol. 3, No. 8, August, 2017 594 Absorption Characteristics of Lightweight Concrete Containing

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Durability properties of high volume fly ash concrete ...

2014-5-21  This paper reports the results of an experimental study on durability of ordinary concrete and high volume fly ash (HVFA) concrete containing nano silica (NS). In this study, concretes containing 2 and 4 % of NS are prepared at a constant water/binder ratio of 0.4 for testing ages of 3, 7, 28, 56 and 90 days. The concrete containing 2 % NS exhibited similar compressive strength of that ...

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Permeability properties of concretes with high reactivity ...

2013-5-11  This study reports the findings of an experimental study carried out on transport properties of the concretes modified with different calcined non purified kaolins (CK) and commercially available high reactivity metakaolin (MK). CK used in this study were obtained by calcining impure ground kaolins from four different quarries located on kaolin beds of different morphological and geological ...

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Evaluation of mechanical properties of concretes ...

2018-8-1  This paper investigates the application of three artificial intelligence methods, including multivariate adaptive regression splines (MARS), M5 model tree (M5Tree), and least squares support vector regression (LSSVR) for the prediction of the mechanical behavior of recycled aggregate concrete (RAC). A large and reliable experimental test database containing the results of 650 compressive ...

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Best Practices Guide for High-Volume Fly Ash Concretes

produce acceptable concretes with 100 % fly ash, as documented by Cross et al. [5] and as employed in certain commercially-available products. These ultra-high-volume fly ash mixtures provide enhanced pumpability and also improved thermal properties (in combination with the

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Fiber Reinforced Concrete - Types, Properties and

Fiber reinforced concrete are of different types and properties with many advantages. Continuous meshes, woven fabrics, and long wires or rods are not considered to be discrete fibers. Fiber is a small piece of reinforcing material possessing certain characteristics properties

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Prediction of chloride permeability of concretes ...

2013-1-17  This research was to study the chloride penetration resistance of normal (W/B of 0.80, 0.62, 0.48) and high (W/B of 0.41, 0.35, 0.30) strength concretes containing ground pozzolans such as fly ash, bottom ash and rice husk ash using the rapid chloride penetration test and the immersion test methods. Furthermore, on the basis of this experimental data, an artificial neural network technique is ...

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Study of the Properties of Aged Concretes Containing ...

2015-7-1  Study of the Material Properties of Aged Concretes Containing Various Cements Parapet Wall, Green Mountain Dam-3-Table A.—Distribution of Portland cement types placed in the parapet wall at Green Mountain Dam, Big Thompson Project, Colorado (Douglass et al. 1947) Cement type Cement characteristics Number of cements (no air entrainment) No. of ...

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Interactions among the characteristics of concretes ...

Interactions among the characteristics of concretes containing a high portion of micro-filler A. Sicakova, M. Kovac, M. Draganovska ... material, on the interaction of the resulting properties of concretes, as well as on the changes of those properties in time, since the

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Mechanical properties of three High-Strength Concretes ...

Abstract. Three high-strength concretes containing silica fume were cast and tested at the University of Alberta to study the mechanical properties. The concretes were designed to have compressive ...

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Investigation and Comparison of the Strength Properties

2016-1-11  Concretes Containing LECA and Waste Glass Amir Zohrabi1, Mehdi Zohrabi1, ... Chemical characteristics of glass may have determinant effects, such as making gradual changes in the concrete ... and flexural strength properties of lightweight concretes. However, studying these properties is considered to be ...

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Effect of nano silica on properties of concretes ...

2019-3-28  of NS addition on the mechanical and durability properties of concrete containing RCA. Although the research investigated only few properties relating to the use of NS to improve the mechanical and durability properties of recycled aggregate concretes, it provides a good platform for future work in this field. 2. Experimental programme 2.1 ...

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(PDF) Determination and calculation of gamma and

Investigation of fast neutron tion on neutron shielding properties of the investigated concretes. shielding characteristics depending on boron percentages of MgB2, NaBH4 and Finally, it is vital to follow the good geometry conditions in KBH4. J. Radioanal. Nucl. Chem. 286, 61–65. Maki, Y., Ohnuma, H., 1992.

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Mechanical and Durability Properties of Recycled

The properties of concrete containing fine recycled aggregate are investigated. Recycled aggregate consisted of crushed concrete (CC) or crushed brick (CB) with particles less than 5 mm in diameter.

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Studies of Fracture Toughness in Concretes Containing Fly ...

This paper presents the results of the fracture toughness of concretes containing two mineral additives. During the tests, the method of loading the specimens according to Mode I fracture was used. The research included an evaluation of mechanical parameters of concrete containing noncondensed silica fume (SF) in an amount of 10% and siliceous fly ash (FA) in the following amounts: 0%, 10% and ...

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Near Surface Characteristics and Strength of Concretes ...

مشخصات نویسندگان مقاله Near Surface Characteristics and Strength of Concretes Containing Different Levels of Cement Content Mohsen Tdayon - Faculty of Engineering, School of Civil Engineering, Bu-Ali Sina University, Hamedan, Iran Asistant Professor of Civil Engineering

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Handbook of Alkali-Activated Cements, Mortars and

2014-11-3  Purchase Handbook of Alkali-Activated Cements, Mortars and Concretes - 1st Edition. Print Book E-Book. ISBN 9781782422761, 9781782422884

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