Strength and hydration attributes of cement pastes containing nano titania and cenosphere. A. Hanif Zeyu Lu P. Parthasarathy D. Hou Zongjin Li Guoxing Sun. Materials Science, Environmental Science. 2020. An in-depth study of cementitious composites incorporating fly ash cenosphere (FAC) and varying amounts of nano titania (NT) was …
A significant amount of fly ash is been used by the construction industry to partially and totally replace Portland cement as a binder in cementitious materials (Sivakrishna et al., 2019; Adesina, 2018; Awoyera et al., 2019; Zhuang et al., 2016). However, there is a need to also create an avenue to also incorporate cenospheres into …
of concrete. Fly ash cenospheres (FACs) are by-products from fly ash that are spherical, hollow and lightweight and have good heat resistance [19,20]. FACs could be used to reduce the bulk density of DS concrete, and they could also be beneficial for industrial waste utilization and environmental protection. Hanif [21] found that FACs could ...
DOI: 10.1016/j.jclepro.2024.141531 Corpus ID: 268208217; Reinforcing efficiency of nanomaterials on mechanical and interfacial characteristics of green concrete …
Fly ash cenosphere, as one of the coal-burning related industrial wastes, causes significant negative consequences to the environment. Therefore, it is necessary to explore an ecological way to take full advantage of the cenosphere. ... Rafieizonooz et al. (2022) evaluated the coal ash concrete by investigating the engineering properties and ...
Prior to cenosphere separation, the fly ash sample was oven-dried at 105 °C for 24 h. The separation of cenospheres was performed through the wet separation process sink-float method. ... Tangtermsirikul, S. Effect of free lime content on properties of cement–fly ash mixtures. Constr. Build. Mater. 2013, 38, 829–836. [Google Scholar]
Corpus ID: 40460753; Utilizing Fly Ash Cenosphere and Aerogel for Lightweight Thermal Insulating Cement-Based Composites @article{Hanif2017UtilizingFA, title={Utilizing Fly Ash Cenosphere and Aerogel for Lightweight Thermal Insulating Cement-Based Composites}, author={Asad Hanif and Pavithra Parthasarathy and …
The compatibility of cenosphere with special cement and adhesives coating and composites has been well identified. They are used extensively as filler material to reduce the weight of cement and polymers such as plastics, rubbers, and resins. ... Utilization of fly ash cenosphere as lightweight filler in cement-based composites – a …
The production of fly-ash cenosphere encapsulated phase change material (or CenoPCM) follows the procedure outlined in one of the authors' earlier papers [23].In this study, a fatty-acid derivative, i.e., PureTemp 29 (Entropy Solutions, LLP), was selected as PCM to be encapsulated because of its high heat of fusion (~200kJ/kg), cyclic …
DOI: 10.1016/J.CEMCONCOMP.2017.04.008 Corpus ID: 136216034; Properties improvement of fly ash cenosphere modified cement pastes using nano silica @article{Hanif2017PropertiesIO, title={Properties improvement of fly ash cenosphere modified cement pastes using nano silica}, author={Asad Hanif and Pavithra …
The strategic utilization of this waste to fulfil the need of the construction industry can solve these problems. This paper aims to evaluate the performance of structural lightweight concrete (LWC) produced by utilizing high volumes of fly ash cenosphere (FAC) and sintered fly ash aggregate (SFA), obtained from fly ash, with …
Cenosphere is a coal combustion by-product obtained from fly ash in boilers of coal fired power plants. The properties of cenosphere including. Due to increased urbanization and population in ...
The incorporation of cenospheres in concrete reduces the density of the concrete due to its shape and structure. Mix containing 40% cement replacement by cenospheres decreases material density up to 23% (from 1790 to 1450 kg/m 3) [1]. Mixes made using fly ash cenospheres and aerogel with different percentages of replacement …
115 cement, fly ash and silica fume can be found in Fig. 3. The sup erplasticizer used in this study was ADVA-116 181N from Grace Pte. Ltd. 117 118 119 Fig. 2 SEM image of fly ash cenosphere (FAC) 120 121 122 Fig. 3 Paritcle size distribution of FAC, silica sand, cement, fly ash and silica fume 123 124 125 126
This investigation is intended to develop lightweight concrete by replacing the natural fine aggregate (NFA) with an industrial waste called fly ash cenosphere (FAC). …
Structural LWC using 27% (by vol. of concrete mixture) fly ash hollow microspheres, also known as cenosphere (FAC) is used up to 27% by volume of concrete mixture with a density in the range from ...
Section snippets Cenosphere formation. Fig. 2a shows a simplified coal power plant during which minor amounts of cenospheres are formed next to major content of fly ash.As a result of coal combustion in power plants, fly ash waste is enriched in most elements that can be found in coal except for the most volatile elements, such as Hg [39].
Fly Ash is used in concrete to surge the performance, strength and stability of concrete. The use of flyash is one of the cost effective. The amount of Portland cement is reduced by using fly ash. It is used in the Portland cement has a lot of benefits and also improves the performance in fresh and hardened concrete state. Fly ash in cement ...
Fly ash cenosphere (FAC) is usually produced in coal burning power plants, it can be regarded as a solid waste because it is difficult to decay in nature, causing water and soil pollution [42]. Fortunately, FAC has the thin walled hollow structure with the aluminosilicate shell of high-strength and dense [43]. The internal hollow structure ...
The mechanisms governing the formation of alkali-activated fly-ash-based geopolymer have been an area of intense investigation [1,2]; as an alternative to traditional Portland cement, one of the ...
The fly ash is the material as a waste product obtained from the power plant. There are many used of the fly ash and the utilization is important to dispose off the fly ash. The coal fly ash gives the material called cenosphere and this considered to be the good utilization in many sectors all across the globe.
A.N. Nayak et al (2019) durability and microstructural properties of lightweight concrete made by utilising fly ash cenosphere and sintered fly ash aggregate as substitute for natural fine and coarse aggregate in varied proportions as shown in Fig. 4. Concrete properties of compressive strength, sulphate resistance, chloride attack and X …
Abstract: In order to alleviate the shortage of sand resources for construction, make full use of industrial waste and promote the development of green lightweight …
Approximately 500 MT of fly ash is wasted from thermal plants worldwide each year. The wasted fly ash contains a significant amount of waste cenosphere, which is a big concern in terms of waste management. The processing technique of FAC from fly ash makes an detrimental effect of introducing in concrete.
Cenospheres are spherical particles with a hollow center. Their concentration in fly ash varies over a wide range, from 0.01 to 4.80 wt%; but in most cases limits between 0.3 and 1.5 wt% [12], [13], [14]. The formation of cenospheres during combustion depends on the total mineral content of the feed coal and the combustion process [15], [16].
In this study, fly ash-based cement mortars were prepared by incorporating 0-20% CS as cement replacement. To evaluate the e ff iciency of C S as an I C age nt, v arious properti es o f CS and
According to [], the inclusion of cenosphere promotes good mechanical properties of concrete as well as reducing thermal conductivity.For instance, DeSouza et al. [] showed that the replacement of sand of 33% by cenosphere slightly reduce the compressive strength to 80 MPa as compared to control mix which about 85 MPa.Patel …
The utilization of cenosphere by-product of fly ash as a substitution of sand in concrete is an effective way to reduce thermal conductivity. This study investigates the mechanical and thermal …
The aim is the analysis of potential for practical use of fly-ash cenospheres as a binding material in the cement concrete. Keywords: Cenospheres, microscopic hollow balls, fly …
Therefore, to evaluate their performance in concrete, three types of mixes were prepared: one with cenosphere as a 30% replacement by weight of cement (CS-30%), another with fly ash as a 30% replacement by weight of cement (FA-30%), and the third is a control mix (CM-1) for comparing the performance of normal concrete with the …
The observed outcomes have demonstrated the better compatibility of using fly ash up to 25% and cenospheres at 30% as a sand replacement in LWC with improved strength characteristics. In the construction of concrete structures, Light Weight Concrete (LWC) is quickly gaining acceptance for a variety of uses. When building concrete …
Fly ash cenospheres of CIL 150 grade used as filler are procured from Cenosphere India Ltd., Kolkata, West Bengal, India. Cenospheres are used in as-received condition (Fig. 26.2A), without any surface treatment.Cenospheres are sieved to –75 µm to avoid breakage while passing through blender, extruder, and the nozzle of the 3D printer. …
Cenospheres are separated from fly ash due to which they contain a similar composition as fly ash. • Cenospheres have a high aluminate and silicate content, which causes them to have Pozzolanic reactivity. Cenosphere silicate reacts with the …
Structural lightweight concrete (LWC) can be produced by utilizing high-volume fly ash cenosphere (FAC). FAC based structural LWC is suitable for use in structures exposed to saline environment. FAC based structural LWC is not suitable for structures exposed to acid and sulphate environments in long run.
Jan 6, 2021. Synthesis of Ultralight Cement Using Solid Waste Fly Ash Cenosphere for Low-Fracture Gradient Formation with Reduced Shrinkage. Authors: Gaurav Richhariya, …
Fly ash constitutes of 50–90% of solids and comprises Figure 1 Applications of coal in different industries worldwide [6]. 4540 J ... concrete, alloys. Moreover, cenosphere is a perfect ingredient (as a binder or fine aggregate) to be used in concrete due to its properties like chemical inertness, excellent insu-lation, high permeability and ...
Fly ash (FA) cenosphere is one such industrial product used in the concrete as a partial or full replacement of fine aggregate, which can be able to use for non …