scholarly journals The Reuse of Industrial By-Products for the Synthesis of Innovative Porous Materials, with the Aim to Improve Urban Air Quality

2021 ◽  
Vol 11 (15) ◽  
pp. 6798
Author(s):  
Antonella Cornelio ◽  
Alessandra Zanoletti ◽  
Roberto Braga ◽  
Laura Eleonora Depero ◽  
Elza Bontempi
Keyword(s):  
Porous Materials ◽  
Silica Fume ◽  
Bottom Ash ◽  
Embodied Energy ◽  
Similar Process ◽  
Urban Air ◽  
New Materials ◽  
Pore Former ◽  
By Products ◽  
Adsorption Capability

This works concerns the characterization and the evaluation of adsorption capability of innovative porous materials synthesized by using alginates and different industrial by-products: silica fume and bottom ash. Hydrogen peroxide was used as pore former to generate a porosity able to trap particulate matter (PM). These new materials are compared with the reference recently proposed porous SUNSPACE hybrid material, which was obtained in a similar process, by using silica fume. Structural, morphological, colorimetric and porosimetric analyses were performed to evaluate the differences between the obtained SUNSPACE typologies. The sustainability of the proposed materials was evaluated in terms of the Embodied Energy and Carbon Footprint to quantify the benefits of industrial by-products reuse. Adsorption tests were also performed to compare the ability of samples to trap PM. For this aim, titania suspension, with particles size about 300 nm, was used to simulate PM in the nanoparticle range. The results show that the material realized with bottom ash has the best performance.

scholarly journals Impact Resistance of Ternary Concrete Using Scba and Silica Fume as Partial Substitute of Cement in Concrete

2019 ◽  
Vol 8 (9) ◽  
pp. 1330-1334
Keyword(s):  
Silica Fume ◽  
Research Work ◽  
Impact Resistance ◽  
Bottom Ash ◽  
Optical Microscope ◽  
Dynamic Loads ◽  
Normal Concrete ◽  
Concrete Mix ◽  
The Impact ◽  
By Products

Concrete structures inevitably encounter dynamic loads throughout the planning lifetime of structure. Impact resistance is necessary factor for evaluate the dynamic concert of concrete. To fulfill the necessities of strength and toughness properties of concrete we have a tendency to use the industrial by-products likecoal bottom ash, silica fume, metakaolin, etc., as supplementary building material. During this research work the experimental investigation was investigation to gauge the Impact resistance of TBASF concrete mixby cement is partially substitute with silica fume 10% and also the SCBA 0%, 5%, 10%, 15%, 20% and 25%. The Impact resistance of TBASF concrete mix is additionally compared with normal concrete. This study is additionally conducting elaborated investigation of TBASF concrete for mineralogical properties by using Optical microscope and XRD keeping Impact resistance in view. The maximumpercentage of SCBA is obtained at 15% replacement of cement.

scholarly journals Porous Materials Derived from Industrial By-Products for Titanium Dioxide Nanoparticles Capture

2020 ◽  
Vol 10 (22) ◽  
pp. 8086
Author(s):  
Antonella Cornelio ◽  
Alessandra Zanoletti ◽  
Stefania Federici ◽  
Laura Eleonora Depero ◽  
Elza Bontempi
Keyword(s):  
Porous Materials ◽  
Raw Materials ◽  
Titanium Dioxide Nanoparticles ◽  
Bottom Ash ◽  
Experimental Tests ◽  
Waste Incineration ◽  
Original Material ◽  
Limited Applicability ◽  
Materials Used ◽  
By Products

The aim of this paper was the evaluation of hybrid porous materials, named SUNSPACE (“SUstaiNable materials Synthesized from by-Products and Alginates for Clean air and better Environment”), realized with raw materials such as silica fume (SUNSPACE SF) and bottom ash derived from municipal solid waste incineration (SUNSPACE BA), compared to cement and leaf for particulate matter (PM) entrapment. SUNSPACE BA was synthesized to overcome the limited applicability of the original material due to its dark grey color. The modification of raw materials used for its realization allows one to obtain a light color in comparison to the corresponding SUNSPACE SF, more suitable to be used as a coating on the buildings’ facades for aesthetic reasons. Moreover, another great advantage was obtained by the synthesis of SUNSPACE BA in the frame of circular economy principles; indeed, it was obtained by using a waste material (derived from waste incineration), opening new possibilities for its reuse. Experimental tests to evaluate the particles entrapment capability of the material were realized for the first time by using a nanoparticles generator. TiO2 suspension with a size of 300 nm and a concentration of 3 g/L was used to simulate a monodisperse nanoparticles flux. To compare the quantity of TiO2 adsorbed by each specimen, both the exposed and the pristine samples were digested and then analyzed by total X-ray fluorescence (TXRF). The results showed a high adsorption capacity of SUNSPACE BA (3526 ± 30 mg/kg).

Western Fly Ash Research, Development and Data Center

1985 ◽  
Vol 65 ◽  
Author(s):  
G. J. McCarthy ◽  
O. E. Manz ◽  
R. J. Stevenson ◽  
D. J. Hassett ◽  
G. H. Groenewold
Keyword(s):  
Fly Ash ◽  
North Dakota ◽  
Knowledge Base ◽  
Great Plains ◽  
Data Center ◽  
Bottom Ash ◽  
Low Rank ◽  
Research Development ◽  
High Calcium ◽  
By Products

With financial support from utilities and ash brokers*, the Western Fly Ash Research, Development and Data Center was established under the aegis of the North Dakota Mining and Mineral Resources Research Institute in August of 1985. Research will be performed by the two North Dakota universities in Grand Forks and Fargo. The fundamental objective of the Center is to enhance the knowledge base of the properties (chemical, mineralogical and physical) and reactions of the coal by-products (principally fly ash, but including bottom ash and FGD waste) produced in the Midwestern and Great Plains regions of the US. Most of the study specimens will be high-calcium (ASTM Class C) ash derived from low-rank lignite and subbituminous coals mined in North Dakota, Montana and Wyoming, although ash from other regions and coals is also being studied. The enhanced knowledge base should lead to more widespread utilization of these by-products [1,2] or, where this is necessary, to their safe and cost-effective disposal [3].

Shrinkage of Blended Cement Pastes with Mineral Additions

2013 ◽  
Vol 539 ◽  
pp. 55-59
Author(s):  
Yi Chen ◽  
Wu Yao ◽  
Dan Jin
Keyword(s):  
Fly Ash ◽  
Silica Fume ◽  
Cement Paste ◽  
Mercury Intrusion Porosimetry ◽  
Construction Materials ◽  
Blended Cement ◽  
Cement Pastes ◽  
Mercury Intrusion ◽  
Mineral Additions ◽  
By Products

Mineral additions such as fly ash and silica fume are industrial by products, and play an important role in properties improvement for construction materials. In this work, the shrinkage of cement paste blended with fly ash and silica fume by different substitute ratio was studied. Pore structures of specimens at different ages were determined by mercury intrusion porosimetry (MIP) and shrinkage deformation was measured by standard shrinkage tests. The effects of mineral addtions on shrinkage were discussed. The results show that the fly ash was significantly effective on shrinkage at early ages. Based on the research, several suitable advices were offered to optimize the performances of materials and reduce the shrinkage.

Experimental Study of Non-Sintering Block for Reducing Surface Temperature Using Recycling Bottom Ash

2009 ◽  
Vol 620-622 ◽  
pp. 105-108 ◽  
Author(s):  
Jong Bin Park ◽  
Sang Ho Lee ◽  
Chae Sung Gee ◽  
Hee Bum Pyun
Keyword(s):  
Thermal Environment ◽  
Bottom Ash ◽  
Industrial Applications ◽  
Water Runoff ◽  
Permeable Pavement ◽  
Storm Water Runoff ◽  
Urban Heat ◽  
Pavement Temperature ◽  
Island Phenomena ◽  
By Products

Permeable pavement systems are suitable for a variety of residential, commercial and industrial applications because pavements such as water-retentive or water absorbing pavements are helpful to alleviate urban heat island phenomena by reducing pavement temperature, yet are confined to light duty and infrequent usage. And most of study for the permeable pavement is limited to asphalt pavement. Also, immense quantities of coal combustion by-products are produced every year, but only a small fraction of them are currently utilized, particularly bottom ash which is used in this study. So, in this study, it was intended to develop new permeable and water-absorbing pavement blocks to control pavement temperature and storm water runoff. And mechanical characteristics-compressive strength, porosity etc were carried out. Also, Experiments for thermal environment characteristics and pollution control were carried out in laboratory scale using modified pavement samples. Experimental results indicated that blocks with bottom ash were suited to standard and possessed excellent water-retentive and water purification ability.

MECHANICAL AND DURABILITY CHARACTERISTICS OF GGBS DOLOMITE GEOPOLYMER CONCRETE

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Aikot Pallikkara Shashikala ◽  
Praveen Nagarajan ◽  
Saranya Parathi
Keyword(s):  
Fly Ash ◽  
Silica Fume ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Setting Time ◽  
Cementitious Materials ◽  
Strength Properties ◽  
Industrial Wastes ◽  
Geopolymer Concrete ◽  
By Products

Production of Portland cement causes global warming due to the emission of greenhouse gases to the environment. The need for reducing the amount of cement is necessary from sustainability point of view. Alkali activated and geopolymeric binders are used as alternative to cement. Industrial by-products such as fly ash, ground granulated blast furnace slag (GGBS), silica fume, rice husk ash etc. are commonly used for the production of geopolymer concrete. This paper focuses on the development of geopolymer concrete from slag (100% GGBS). Effect of different cementitious materials such as lime, fly ash, metakaolin, rice husk ash, silica fume and dolomite on strength properties of slag (GGBS) based geopolymer concrete are also discussed. It is observed that the addition of dolomite (by-products from rock crushing plants) into slag based geopolymer concrete reduces the setting time, enhances durability and improves rapidly the early age strength of geopolymer concrete. Development of geopolymer concrete with industrial by-products is a solution to the disposal of the industrial wastes. The quick setting concrete thus produced can reduce the cost of construction making it sustainable also.

A Strength Model for Concretes Containing Fly Ash, Blast-Furnace Slag and Silica Fume

1985 ◽  
Vol 65 ◽  
Author(s):  
Edwin R. Dunstan
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Silica Fume ◽  
Blast Furnace Slag ◽  
Concrete Strength ◽  
Pozzolanic Reaction ◽  
Strength Data ◽  
Production Mechanisms ◽  
Furnace Slag ◽  
By Products

ABSTRACTThis paper describes preliminary a model for the strength of concretes containing industrial by-products such as fly ash, blast-furnace slag, and silica fume. A formula that describes the various strength production mechanisms of these by-products is developed. These materials produce strength by pozzolanic reaction, by latently hydraulic reactions and by self-cementing reactions similar to Portland cement. A method of separating the effect of each mechanism is proposed. A parameter for each of these strength producing mechanisms can be determined from concrete strength data.

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