| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Ottosen, Lisbeth M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2024Microcracks assessment during unloading for structural elements reuse
- 2024Rheological characterization of temperature-sensitive biopolymer-bound 3D printing concretecitations
- 2024Mechanical properties of mortar substituting fine aggregate with wood bottom ash from fluidized bed boilers
- 2024Screening of natural polymers as binder in concrete compositescitations
- 2023Clay Brick Powder as Partial Cement Replacementcitations
- 2023Possible Applications for Waste Fishing Nets in Construction Materialcitations
- 2022Utilization of acid-washed sewage sludge ash as sand or cement replacement in concretecitations
- 2021Recovering rare earth elements from contaminated soils: Critical overview of current remediation technologiescitations
- 2020Selecting Electrode Materials and Sequence for Electrochemical Removal of Chlorinated Ethenes in Groundwatercitations
- 2019Characterization of sewage sludge ash and its effect on moisture physics of mortarcitations
- 2019Adobe specimens of Greenlandic fine-grained rock material
- 2019Electrodialytically treated MSWI fly ash use in clay bricks
- 2019Challenges in electrochemical remediation of chlorinated solvents in natural groundwater aquifer settingscitations
- 2018Selenium removal from petroleum refinery wastewater using an electrocoagulation techniquecitations
- 2017The influence of sediment properties and experimental variables on the efficiency of electrodialytic removal of metals from sedimentcitations
- 2017Colour, compressive strength and workability of mortars with an iron rich sewage sludge ashcitations
- 2016Degradation of oil products in a soil from a Russian Barents hot-spot during electrodialytic remediationcitations
- 2016Wood ash used as partly sand and/or cement replacement in mortarcitations
- 2016The necessity of recovering soluble phosphorus from sewage sludge ashes before use in concrete based on concrete setting and workabilitycitations
- 2016Replacement of 5% of OPC by fly ash and APC residues from MSWI with electrodialytic pre-treatment
- 2015Comparison of 2-compartment, 3-compartment and stack designs for electrodialytic removal of heavy metals from harbour sedimentscitations
- 2015Screening of variable importance for optimizing electrodialytic remediation of heavy metals from polluted harbour sedimentscitations
- 2015Ammonium citrate as enhancement for electrodialytic soil remediation and investigation of soil solution during the processcitations
- 2015Multivariate methods for evaluating the efficiency of electrodialytic removal of heavy metals from polluted harbour sedimentscitations
- 2014The Aesthetical quality of SSA-containing mortar and concrete
- 2013Effect of pulse current on acidification and removal of Cu, Cd, and As during suspended electrodialytic soil remediationcitations
- 2012Electrodialytic remediation of suspended soil – Comparison of two different soil fractionscitations
- 2010Numerical Simulations of Electrokinetic Processes Comparing the Use of a Constant Voltage Difference or a Constant Current as Driving Force
- 2009Electrodialytic remediation of harbour sediment in suspension - Evaluation of effects induced by changes in stirring velocity and current density on heavy metal removal and pHcitations
- 2007Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenlandcitations
- 2006Comparison of electrodialytic removal of Cu from spiked kaolinite, spiked soil and industrially polluted soil
- 2005Acidification of Harbour sediment and removal of heavy metals induced by water splitting in electrodialytic remediation.citations
- 2005Salt Induced Decay of Masonry and Electrokinetic Repair
- 2000Electrodialytic removal of Cu, Cr, and As from chromated copper arsenate-treated timber wastecitations
Places of action
| Organizations | Location | People |
|---|
document
The necessity of recovering soluble phosphorus from sewage sludge ashes before use in concrete based on concrete setting and workability
Abstract
By replacing cement with alternative ashes, such as sewage sludge ashes (SSA) from mono-incineration plants, it is possible to reduce the CO<sub>2</sub>-emmision from the production of cement. SSA contains a large amount of phosphate which can be extracted before addition in concrete. The Danish Standard DS/EN 450-1 states an upper limit for total phosphorus in concrete, but it does not account for the solubility. The aim of this study is to determine an upper limit for soluble phosphorus in concrete, thus minimize the formation of calcium phosphate to an acceptable level. The analysis will be based on the setting and workability. When adding soluble phosphorus salts to a mortar the setting process is extended with no pronounced difference between different soluble phosphorus salts. It is therefore assumed, that the soluble phosphorus (SP) influences the concrete setting. A logarithmic relationship between the increased addition of SP and the initial setting time is seen. By comparison with the limit for initial setting time established in DS/EN 450-1 it is possible to establish a limit for SP of 0.54 wt% cement. When studying the workability an objective limit for SP of 0.16 wt% cement can be established. SSA from the Danish mono-incineration plant at Spildevandscenter Avedøre is examined. At a pH-value of 13 it is possible to replace 55% and 16% of the cement, based on the set limits, with SSA from Spildevandscenter Avedøre, before it is necessary to extract SP from SSA before adding to the concrete mixture. Former studies have shown a replacement of up to 20% of the cement with SSA is feasible regarding compressive strength, and therefore it is necessary to consider the limit for SP of 0.16% wt% cement.