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Articles 6331 - 6360 of 52423
Full-Text Articles in Entire DC Network
Application Of Data Science Techniques To Estimate Soluble Alkali Contribution From Fly Ashes For Determination Of Concrete Pore Solution Chemistry, Anol Mukhopadhyay
Application Of Data Science Techniques To Estimate Soluble Alkali Contribution From Fly Ashes For Determination Of Concrete Pore Solution Chemistry, Anol Mukhopadhyay
World of Coal Ash Proceedings
Application of Data Science Techniques to Estimate Soluble Alkali Contribution from Fly Ashes for Determination of Concrete Pore Solution Chemistry Authors Prof. Anol Mukhopadhyay - United States - Texas A&M University Abstract Traditionally, the available alkali (AA) tests following ASTM C 311 were primarily used to qualify Fly Ashes’ (FA) for suitability in Alkali Silica reaction (ASR) mitigation based on a 1.5% Na2Oeq AA limit. However, the test is currently being discontinued due to criticisms stemming from its lack of correlation with the ASR expansions and high operator/laboratory variability of test measurements. Therefore, a Bayesian machine learning model (ML) is …
Proposed Legacy Rule – Groundwater Compliance Nuances And Lessons Learned, Matthew Dagon, Peter Thibodeau
Proposed Legacy Rule – Groundwater Compliance Nuances And Lessons Learned, Matthew Dagon, Peter Thibodeau
World of Coal Ash Proceedings
Proposed CCR compliance timelines for CCR legacy surface impoundments and management units are compressed compared to 2015 CCR Rule deadlines. Site characterization, configuring monitoring well networks, and statistical analysis are critically important in identifying appropriate closure solutions. The regulated community and environmental consultants offered significant comments on the Proposed Rule, emphasizing that legacy sites are inherently complex and will require similar evaluation as 2015 Rule units. The industry is limited in terms of availability of quality consultants, drill rigs, and laboratories, creating constraints in meeting this compressed proposed timeline. Under the proposed Rule, there is less time for site characterization …
Feasibility Of Concurrent Treatment Of Arsenic And Molybdenum Through Co-Precipitation And Adsorption With Case Study And Cost Analysis, Prachi Jain, Brian Colonnese, Jacob Chu
Feasibility Of Concurrent Treatment Of Arsenic And Molybdenum Through Co-Precipitation And Adsorption With Case Study And Cost Analysis, Prachi Jain, Brian Colonnese, Jacob Chu
World of Coal Ash Proceedings
Feasibility of Concurrent Treatment of Arsenic and Molybdenum through Co-Precipitation and Adsorption with Case Study and Cost Analysis Authors Mrs. Prachi Jain - United States - Haley & Aldrich, Inc. Mr. Brian Colonnese - United States - Haley & Aldrich, Inc. Dr. Jacob Chu - United States - Haley & Aldrich Inc. Abstract Molybdenum and arsenic are among the Appendix IV constituents required to be monitored under the coal combustion residuals (CCR) Rule. At some CCR sites, arsenic and molybdenum in CCR-impacted groundwater were found concurrently at a level above their groundwater protection standards. In the environment, molybdenum is highly …
Use Of Visualization Software For Site Characterization, Kevin Cernik, Craig Schuettpelz, Shane Stockdill, Todd Stong
Use Of Visualization Software For Site Characterization, Kevin Cernik, Craig Schuettpelz, Shane Stockdill, Todd Stong
World of Coal Ash Proceedings
Use of Visualization Software as a Tool for Site Characterization Authors Mr. Kevin Cernik - United States - WSP USA Mr. Craig Schuettpelz - United States - WSP USA Mr. Shane Stockdill - United States - Rainbow Energy Center Mr. Todd Stong - United States - WSP USA Abstract Understanding site geology is critical to manage coal combustion residuals (CCR) units in compliance with the EPA’s CCR Rule, including siting of CCR units and groundwater monitoring wells to understanding suitable foundation conditions. At Rainbow Energy Center's (REC’s) Coal Creek Station, subsurface investigations have been conducted since the mid-1970’s to help …
Paper_Chemical-Free, High-Volume Leachate Pond Filtration: Commercial Success, Gerard Simon, Jennie Henthorn
Paper_Chemical-Free, High-Volume Leachate Pond Filtration: Commercial Success, Gerard Simon, Jennie Henthorn
World of Coal Ash Proceedings
Several constituents of concern (COC) are problematic for coal ash leachate pond waste management, and even more so with the effluent limitation guidelines continuing to become more stringent. Filtration management of leachate ponds continues to have difficulty with effective removal of metals such as selenium, arsenic and boron to the wastewater discharge allowances. A novel technology has proven success in providing a chemical-free, high-volume alternative to traditional filtration in the coal ash and energy space. The technology meets or exceeds permitted allowances for discharge and is rapidly deployable as a mobile technology in addition to the ability to scale for …
Comparing Landfill Post-Closure Stormwater Runoff – Vegetated Soil Cover Versus Engineered Synthetic Turf Cover, Mark Taylor, Chris Jordan, Chris Timpson, Ming Zhu
Comparing Landfill Post-Closure Stormwater Runoff – Vegetated Soil Cover Versus Engineered Synthetic Turf Cover, Mark Taylor, Chris Jordan, Chris Timpson, Ming Zhu
World of Coal Ash Proceedings
Comparing Landfill Post-Closure Stormwater Runoff – Vegetated Soil Cover versus Engineered Synthetic Turf Cover Authors Mr. Mark Taylor - United States - WSP USA, Inc. Mr. Chris Jordan - United States - WSP USA, Inc. Mr. Chris Timpson - United States - WatershedGeo Dr. Ming Zhu - United States - WatershedGeo Abstract An evaluation was conducted of the effects on stormwater runoff, conveyance, and on-site retention as the result of specifying an engineered synthetic turf cover system (specifically ClosureTurf®) versus a conventional vegetated soil cover system for final closure of a CCR landfill in the Southeast U.S. A HydroCAD® H&H …
Modifying Of Expansive Clay Soils Using Alkali Activated Eskom Dump Ash, Cyril Attwell, Phenyo Mvuyana, Kelley Reynolds-Clausen
Modifying Of Expansive Clay Soils Using Alkali Activated Eskom Dump Ash, Cyril Attwell, Phenyo Mvuyana, Kelley Reynolds-Clausen
World of Coal Ash Proceedings
Modifying of expansive clay soils using alkali activated ESKOM legacy ash Authors Mr. Cyril Attwell - South Africa - ARC Innovation Ms. Phenyo Mvuyana - South Africa - Eskom Holdings SOC LTD Dr. Kelley Reynolds-Clausen - South Africa - Eskom Holdings SOC LTD Abstract Expansive clays are the more commonly occurring problem soils in South Africa. Due to spatial constraints, substation construction is increasingly undertaken on these marginal soils, thus increasing earthworks construction costs by approximately 70%. To reduce these costs, the option of using Eskom legacy ash to modify expansive clayey soils should be explored. This study investigated the …
Nano-Modified Fly Ash-Based Geopolymer Concrete Filled Cfrp Tube Composite- Mechanical Model And Life Cycle Assessment, Xianming Shi, Zhipeng Li
Nano-Modified Fly Ash-Based Geopolymer Concrete Filled Cfrp Tube Composite- Mechanical Model And Life Cycle Assessment, Xianming Shi, Zhipeng Li
World of Coal Ash Proceedings
Nano-Modified Fly Ash-Based Geopolymer Concrete Filled CFRP Tube Composite: Mechanical Model and Life Cycle Assessment Authors Dr. Xianming Shi - United States - Washington State University Dr. Zhipeng Li - United States - Washington State University Abstract Geopolymer concrete holds immense potential as a viable alternative to ordinary portland cement (OPC) concrete; however, its application for structures has been hindered by its relatively low compressive strength and significant variability relative to conventional OPC concrete. This study investigates the utilization of carbon fiber-reinforced plastic (CFRP) tubes to confine fly ash-based geopolymer (FAGPR) concrete and its graphene oxide-modified counterpart (GFAGPR), with the …
Corrective Action Sustainability- Holistic Decision Support Tool, John Kondziolka, Ari Lewis, Bruce Hensel, Andrew Bittner
Corrective Action Sustainability- Holistic Decision Support Tool, John Kondziolka, Ari Lewis, Bruce Hensel, Andrew Bittner
World of Coal Ash Proceedings
Corrective Action Sustainability: Holistic Decision Support Tool Authors Mr. John Kondziolka - United States - Gradient Ms. Ari Lewis - United States - Gradient Mr. Bruce Hensel - United States - Electric Power Research Institute Mr. Andrew Bittner - United States - Gradient Abstract Selecting a corrective action approach to address groundwater protection standards at a coal combustion product (CCP) site requires balancing a variety of factors, including risk reduction, effectiveness, community impact, and cost. Several resources exist for conducting corrective action alternatives analyses, but these resources have not been used consistently to holistically evaluate risks and benefits inclusive of …
A Comparative Evaluation Of Portable X-Ray Fluorescence (Pxrf) Analysis On Fly Ash, Christopher Frishcosy, Ashley Manning-Berg, Linen Cooper, Robert Hageman
A Comparative Evaluation Of Portable X-Ray Fluorescence (Pxrf) Analysis On Fly Ash, Christopher Frishcosy, Ashley Manning-Berg, Linen Cooper, Robert Hageman
World of Coal Ash Proceedings
An Evaluation of On-Site X-Ray Fluorescence (XRF) Analysis on Coal Combustion Residuals Authors Mr. Christopher Frishcosy - United States - University of Tennessee at Chattanooga Dr. Ashley Manning-Berg - United States - University of Tennessee at Chattanooga Ms. Linen Cooper - United States - University of Tennessee at Chattanooga Mr. Robert Hageman - United States - Tennessee Valley Authority Mr. Timothy Moyers - United States - Tennessee Valley Authority Ms. Tara Masterson - United States - Tennessee Valley Authority Mr. Nicholas McClung - United States - Tennessee Valley Authority Abstract As coal-fired fossil plants are retiring and less Coal Combustion …
Proposed Ccr Legacy Rule – Making Sense From Chaos, Will Mattingly, Charla Barnes
Proposed Ccr Legacy Rule – Making Sense From Chaos, Will Mattingly, Charla Barnes
World of Coal Ash Proceedings
The proposed CCR Legacy Rule poses numerous challenges and constraints related to implementation and compliance. While the proposed aggressive compliance schedule is daunting, utility owners can set themselves up for success and reduce unwanted surprises by performing low risk, desktop level activities prior to the CCR Legacy Rule promulgation. In addition to the anticipated schedule constraints, there are other obvious challenges related to potential unit interpretations, beneficial use, closure standards, asset repurposing, availability of engineering consultants, certified drillers, laboratories, and qualified reviewers and the lack of consideration of risk. These challenges are known industry-wide and are dependent on requirements to …
Green Cement Llc, Russell Stapp
Green Cement Llc, Russell Stapp
World of Coal Ash Proceedings
The Future of CCR “Green Cement” Technology to Reduce CO2 and Provide High-Performance Products Authors Mr. Russell Stapp - United States - Ecomaterial Technologies Abstract ECOMaterial Technology is on the forefront of CCR Beneficial use, and its Green Cement (GCI) Division is specifically advanced in new CO2 reduction product development applications to create high volume uses of CCR to replace up to 60 percent of cement in standard cement formulations. PozzoSlag® product formulations will meet or exceed a Grade 100 and Grade 120 slag performance criteria evaluated under ASTM C989 specifications and compared to blast furnace slag performance. PozzoSlag® is …
Paper_A Comparative Evaluation Of Portable X-Ray Fluorescence (Pxrf) Analysis On Fly Ash, Christopher Frishcosy, Ashley Manning-Berg, Eric Hageman, Timothy Moyers
Paper_A Comparative Evaluation Of Portable X-Ray Fluorescence (Pxrf) Analysis On Fly Ash, Christopher Frishcosy, Ashley Manning-Berg, Eric Hageman, Timothy Moyers
World of Coal Ash Proceedings
As coal-fired fossil plants are retiring and lower volumes of Coal Combustion Products (CCPs) are being produced, the generators of Coal Combustion Residual (CCR) producers across the nation are focused on harvesting landfilled and ponded coal ash to maintain the supply for beneficial use markets such as those volumes needed by the concrete mixing industry. To aid in the development of more efficient harvesting strategies, research performed in the emerging Geomaterials Testing and Research Laboratory (GTRL) at the University of Tennessee at Chattanooga College of Engineering and Computer Science and the College of Biology, Geology, and Environmental Science (UTC – …
Paper_Collaborative Utilization Of Fly Ash And Desulfurization Wastewater, Xia Wang, Yang Dong, Jinder Jow
Paper_Collaborative Utilization Of Fly Ash And Desulfurization Wastewater, Xia Wang, Yang Dong, Jinder Jow
World of Coal Ash Proceedings
In order to reduce sulfur dioxide emission in flue gas to meet the national requirement less than 35 mg/m3, the wet desulfurization process is typically used in the coal-fired power plant, resulting in generation of flue-gas desulfurization gypsum and desulfurization wastewater. The wastewater can be re-used or discharged only after water-treatment to meet the relevant industry standard requirements of water quality. This treatment process increases the operation cost. Fly ash is also produced from the coal-fired power plant, mainly used in building materials as a supplementary cementitious material to cement. The objective of this study is to develop fly ash-based …
Preparing To Dewater A Ccr Pond, Ron Hager, James Feild
Preparing To Dewater A Ccr Pond, Ron Hager, James Feild
World of Coal Ash Proceedings
PREPARING TO DEWATER A CCR POND: WAYS TO BETTER UNDERSTAND YOUR POND CHARACTERISTICS AND PLAN FOR A SUCCESSFUL DEWATERING EFFORT Authors Mr. Ron Hager - United States - Burns & McDonnell Dr. James Feild - United States - Burns & McDonnell Abstract Prior to dewatering a CCR pond, Owners and Operators should make the financially responsible decision to invest in the data gathering process to better understand the conditions of the surface impoundment, the properties of the CCR materials contained in the impoundment, and the potential approaches to remove the separable pore water from the ash materials prior to closure. …
Basewood- Boron Remediation Technology, Allison Kreinberg, Rob Ferree, Duane Graves
Basewood- Boron Remediation Technology, Allison Kreinberg, Rob Ferree, Duane Graves
World of Coal Ash Proceedings
An Innovative and Cost-Effective Boron Adsorbent Media Authors Ms. Allison Kreinberg - United States - Geosyntec Consultants, Inc. Mr. Rob Ferree - United States - Geosyntec Consultants, Inc. Dr. Duane Graves - United States - Geosyntec Consultants, Inc. Abstract Boron can be an indicator of coal combustion residual (CCR) impacts to groundwater due to its elevated concentration within CCR materials and highly mobile (conservative) geochemical behavior. Groundwater remedial alternatives for boron may be necessary if it is added to the list of assessment monitoring constituents under the Federal CCR Rule (40 CFR 257 Subpart D) or if States elect to …
5.5-Year Old Concrete Made With Spray Dryer Absorber Material, Benjamin Gallagher, Sundar Chithiraputhiran, Travis Collins
5.5-Year Old Concrete Made With Spray Dryer Absorber Material, Benjamin Gallagher, Sundar Chithiraputhiran, Travis Collins
World of Coal Ash Proceedings
Harvesting and Beneficial Use: Voluntary, Consensus Standard Developed by ASTM E50.03 Authors Mr. Benjamin Gallagher - United States - EPRI Ms. Abigail Calmes - United States - Verdantas Mr. William Petruzzi - United States - Verdantas Abstract ASTM is non-profit organization that develops voluntary, consensus-based standards. ASTM E50.03 subcommittee publishes standards related to beneficial use. The subcommittee’s eight active standards address harvesting of CCPs from landfills and impoundments, beneficial use of CCPs in mine reclamation and structural fills, and beneficial use of impacted lands. This session will provide an overview of active beneficial use standards. The recently published ASTM E3355-23 …
Coal Ash & The Public – Tell Your Story Before Someone Else Does!, Tim Hancock, Melissa Hedgecoth
Coal Ash & The Public – Tell Your Story Before Someone Else Does!, Tim Hancock, Melissa Hedgecoth
World of Coal Ash Proceedings
Coal Ash & the Public – Tell your story before someone else does! Authors Mr. Tim Hancock - United States - Stantec Ms. Melissa Hedgecoth - United States - Tennessee Valley Authority Abstract Nothing travels quite as fast as bad news, and our industry is a convenient target. Technical reports containing 99% good news can become grist for the mill due to a single line or paragraph that feeds a headline, particularly where human health is concerned. Despite data to the contrary, the industry continues to suffer from headlines like: Toxic coal ash: EPA says Alabama doesn't protect public or …
Efficacy And Applications Of Microbial Induced Calcium Carbonate Precipitation In Coal Ash Management, William Odle, Brina Montoya, Pegah Ghasemi
Efficacy And Applications Of Microbial Induced Calcium Carbonate Precipitation In Coal Ash Management, William Odle, Brina Montoya, Pegah Ghasemi
World of Coal Ash Proceedings
Efficacy and Applications of Microbial Induced Calcium Carbonate Precipitation in Coal Ash Management Authors Mr. William Odle - United States - Newfields Prof. Brina Montoya - United States - North Carolina State University Dr. Pegah Ghasemi - United States - North Carolina State University Abstract Coal ash impoundments have risks related to structural stability, liquification, and trace metals leaching to groundwater or surface water sources. Microbial induced calcium carbonate precipitation (MICP) offers a potential approach for managing these risks. In this study, a protocol for MICP treatment of coal ash has been experimentally developed. The MICP treatment was applied to …
Using Machine Learning To Predict The Performance Of Coal Ash In Concrete With The Bulk Oxide Content, Behzad Tahmouresi, Tyler Ley
Using Machine Learning To Predict The Performance Of Coal Ash In Concrete With The Bulk Oxide Content, Behzad Tahmouresi, Tyler Ley
World of Coal Ash Proceedings
Exploring Non-Traditional Coal Ash as a Sustainable Alternative in Concrete: Performance Analysis and Predictive Modeling Authors Mr. Behzad Tahmouresi - United States - Department of Civil and Environmental Engineering, Oklahoma State University, Stillwater, OK 74078 Dr. Tyler Ley - United States - Department of Civil and Environmental Engineering, Oklahoma State University, Stillwater, OK 74078 Abstract Since 2009, there has been a decrease in the production of traditional fly ash in concrete, which has jeopardized its availability as a supplementary cementing material (SCM). Non-traditional coal ash (NTCA) from ponds, surface impoundments, and landfills is being investigated as a potential substitute to …
Beneficial Use Of Fly-Ash Through Soil Stabilization And Portland Cement Concrete Mix, M. A. Karim, Adam Kaplan, Youngguk Seo
Beneficial Use Of Fly-Ash Through Soil Stabilization And Portland Cement Concrete Mix, M. A. Karim, Adam Kaplan, Youngguk Seo
World of Coal Ash Proceedings
Beneficial Use of Fly-Ash through Soil Stabilization and Portland Cement Concrete Mix Authors Dr. M. A. Karim - United States - Kennesaw State University Dr. Adam Kaplan - United States - Kennesaw State University Dr. Youngguk Seo - United States - Kennesaw State University Abstract A study was conducted to investigate the effect of fly-ash (FA) on soil stabilization and on partial replacement of fine aggregate (sand) and cement in Portland Cement Concrete (PCC). Only FA Type F was used in soil stabilization experiments with varied percentages of FA contents and unconfined compression strength tests were conducted for several curing …
Legacy Rule Insights And Challenges, Arica Ditullio, Leigh Rounce
Legacy Rule Insights And Challenges, Arica Ditullio, Leigh Rounce
World of Coal Ash Proceedings
Legacy Rule Insights and Challenges Authors Mrs. Arica DiTullio - United States - GAI Consultants, Inc. Ms. Leigh Rounce - United States - GAI Consultants, Inc. Abstract This presentation will provide a summary of the proposed Legacy Impoundment Rule, which includes regulations for inactive impoundments and inactive landfill at inactive facilities. The discussion will include a review of the timeline for the Coal Combustion Residual (CCR) Rule and prudent definitions of terminology, such as Facility, Inactive Facility, Inactive Impoundment, Legacy Impoundment, Inactive Landfill, CCR Unit and CCR Management Unit. Summary and examples of Legacy CCR Surface Impoundment Applicability Documentation will …
Managing Ash Pond Closure Waters, Philip Benson
Managing Ash Pond Closure Waters, Philip Benson
World of Coal Ash Proceedings
Managing Ash Pond Closure Waters: Technology Selection and Design Considerations Authors Mr. Philip Benson - United States - Geosyntec Consultants, Inc. Abstract The water management issues created by ash pond closure are complex. Dewatering activities can produce large volumes of water that require treatment. Pore water can contain high constituent concentrations due to the long- term contact with ash. Dewatering and stormwater management practices significantly impact the quantity and quality of water that must be treated. The ash has been deposited in the basin over years or even decades, often from diverse sources of coal. The diverse coal sources and …
Changes In Midwestern Fly Ash Ii. Air Classification, Magnetic Separation And The Pozzolanic Characteristics Of The Ash, Anne Oberlink, Sydney Dendekker, Haley Johnson, Thomas Robl
Changes In Midwestern Fly Ash Ii. Air Classification, Magnetic Separation And The Pozzolanic Characteristics Of The Ash, Anne Oberlink, Sydney Dendekker, Haley Johnson, Thomas Robl
World of Coal Ash Proceedings
Changes in Midwestern Fly Ash II. Air Classification, Magnetic Separation and the Pozzolanic Characteristics of the Ash Authors Ms. Anne Oberlink - United States - University of Kentucky Center for Applied Energy Research Ms. Sydney Dendekker - United States - University of Kentucky Center for Applied Energy Research Ms. Haley Johnson - United States - University of Kentucky Center for Applied Energy Research Dr. Thomas Robl - United States - University of Kentucky Center for Applied Energy Research Dr. Bob Jewell - United States - University of Kentucky Center for Applied Energy Research Abstract Six current production fly ashes from …
Successful Piloting Of Discrete Iss At A Ccr Impoundment, George Little, Paul Lear, Tim Silar, Richard Chapman
Successful Piloting Of Discrete Iss At A Ccr Impoundment, George Little, Paul Lear, Tim Silar, Richard Chapman
World of Coal Ash Proceedings
Successful Piloting of Discrete ISS at a CCR Impoundment Authors Mr. George Little - United States - Forgen Dr. Paul Lear - United States - Lear Environmental Consulting Mr. Tim Silar - United States - Silar Services Mr. Richard Chapman - United States - Forgen Mr. John Magee - United States - Silar Services Mr. Ambaresh Tijare - United States - Forgen Mr. David Miller - United States - Forgen Abstract Discrete ISS involves targeted stabilization treatment in a discrete treatment zone. Rather than treating overburden, the mixing auger injects water and/or air as a drilling fluid until the top …
Arsenic Treatment From Coal Ash Pond Groundwater, Jack Ma, David Donkin, Morgan French
Arsenic Treatment From Coal Ash Pond Groundwater, Jack Ma, David Donkin, Morgan French
World of Coal Ash Proceedings
Arsenic Treatment from Coal Ash Pond Groundwater Authors Dr. Jack Ma - United States - UCC Environmental Mr. David Donkin - United States - UCC Environmental Mr. Morgan French - United States - UCC Environmental Abstract This paper focuses on the treatment of groundwater from coal ash ponds, specifically addressing the methods used for removing arsenic. The coal-fired power industry has placed a high priority on developing cost-effective and reliable technologies for removing arsenic, selenium, and mercury from water. Typically, the goal for arsenic treatment is to reach concentrations around 10 µg/L, either due to regulatory requirements or site-specific needs. …
Ash Alchemy- Ash Utilisation For The Protection And Improvement Of Electrical Transmission Infrastructure, Cyril Attwell, Kelley Reynolds-Clausen, Phenyo Mvuyana
Ash Alchemy- Ash Utilisation For The Protection And Improvement Of Electrical Transmission Infrastructure, Cyril Attwell, Kelley Reynolds-Clausen, Phenyo Mvuyana
World of Coal Ash Proceedings
Ash Utilisation for The Protection and Improvement of Electrical Transmission Infrastructure Authors Mr. Cyril Attwell - South Africa - ARC Innovations Dr. Kelley Reynolds-Clausen - South Africa - Eskom Holdings SOC LTD Ms. Phenyo Mvuyana - South Africa - Eskom Holdings SOC LTD Abstract Kelley Anne Reynolds-Clausen1, Phenyo N Mvuyana2, Dan Dukhan2 and Cyril N Attwell3 1Eskom Research, Testing and Demonstration, Eskom Holdings SOC Ltd, South Africa. [email protected]. 2Eskom Transmission, Eskom Holdings SOC, Ltd, South Africa [email protected]; [email protected] 3ARC Innovations, 83 Bonnyvale Road, .Norton Home Estates, Gauteng, South Africa. [email protected] Keywords: Alkali-activation, coal ash, shotcrete, concrete poles, grout One of …
Coal Ash Constituents And Treatment Options, Christine Harris, Rob Orlando
Coal Ash Constituents And Treatment Options, Christine Harris, Rob Orlando
World of Coal Ash Proceedings
Coal Ash Constituents and Treatment Options Authors Mrs. Christine Harris - United States - Groundwater Treatment and Technology, LLC (GWTT) Mr. Rob Orlando - United States - Groundwater Treatment and Technology, LLC (GWTT) Abstract This presentation will open with a review of the information required to design a water treatment system to meet discharge requirements, including how the constituents may change as the ash is dewatered. Attendees will then be invited to spin the wheel of constituents. Based on water samples results, there are many potential constituents in coal ash. This presentation will cover the eight (8) most common constituents …
Effects Of Low-Dosage Lime Treatment On Beneficial Reuse Of Pond Ash As Secondary Cementitious Materials (Scms), Howard Fitzgerald, Utsa Rashique, Karen Slade, Ian Saratovsky
Effects Of Low-Dosage Lime Treatment On Beneficial Reuse Of Pond Ash As Secondary Cementitious Materials (Scms), Howard Fitzgerald, Utsa Rashique, Karen Slade, Ian Saratovsky
World of Coal Ash Proceedings
Effects of low-dosage lime treatment on beneficial reuse of pond ash as Secondary Cementitious Materials (SCMs) Authors Mr. Howard Fitzgerald - United States - Lhoist Mr. Utsa Rashique - United States - Lhoist Mrs. Karen Slade - United States - Lhoist Mr. Ian Saratovsky - United States - Lhoist Abstract Lime treatment is an effective way to dehydrate and solidify ponded coal ash, facilitating easier handling and transportation to, and compaction in a landfill. However, questions arise regarding the impact of low lime dosage on the future beneficial reuse of the treated pond ash. One such potential beneficial reuse case …
Exploring Rapid Solidifying Fly Ash Cementitious Materials For Making Structural Components, Tulie Chakma, Stephen Gordon, Shaurav Alam, John Matthews
Exploring Rapid Solidifying Fly Ash Cementitious Materials For Making Structural Components, Tulie Chakma, Stephen Gordon, Shaurav Alam, John Matthews
World of Coal Ash Proceedings
Exploring Rapid Solidifying Fly Ash Cementitious Materials for Making Structural Components Authors Ms. Tulie Chakma - United States - Louisiana Tech University Mr. Stephen Gordon - United States - Louisiana Tech University Dr. Shaurav Alam - United States - Louisiana Tech University Dr. John Matthews - United States - Louisiana Tech University Abstract This paper presents experimental data on two distinct approaches for rapid curing geopolymer cementitious (GPC) materials that utilize class F fly ash. GPC is a material created through the combination of an alkali activator solution and fly ash, a waste product produced during coal burning in power …