| Title: | Influence of curing / drying methods including microwave heating on alkali activation of waste casting cores |
|---|
| Authors: | ID Horvat, Barbara (Author)
ID Ducman, Vilma (Author) |
|---|
| Files: |  PDF - Presentation file, download (9,29 MB)
MD5: 9894BB38311A12D91AA0F5BC762F8F04
Description: Odprti dostop
PDF - Presentation file, download (3,06 MB)
MD5: 4CAD53A9FB8BC4BA79390E267E4A1120
 URL - Source URL, visit https://www.zag.si/dl/coms2020-21-proceedings-2.pdf
|
|---|
| Language: | English |
|---|
| Typology: | 1.08 - Published Scientific Conference Contribution |
|---|
| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
|
|---|
| Abstract: | Within previous investigation alkali activation of waste casting cores at room temperature did not give promising results, i.e. when the precursor was gently ground and sieved below 600 %m the alkali activated material fell apart at demolding, and when the precursor was ground below 90 %m, the alkali activated material did not solidify in more than 2 years. , Therefore different drying/curing methods were applied to enhance the reaction. Waste casting cores were prepared in two granulations (sieved below 600 %m and below 90 %m), activated with Na -water glass and 10 M NaOH, cured at different temperatures (70 °C and room temperature), and subsequently cured/dried at three different conditions: room temperature, 110 °C, and irradiated with microwaves. The highest compressive strength, 25 MPa, was gained with subsequent curing/drying at 110 °C. The lowest density, 0.5 kg/l, with compressive strength above 3 MPa, was achieved with subsequent curing/drying with microwaves . |
|---|
| Keywords: | waste casting cores, alkali activation, curing, drying, microwaves, mechanical strength |
|---|
| Publication status: | Published |
|---|
| Publication version: | Version of Record |
|---|
| Publication date: | 01.01.2021 |
|---|
| Publisher: | Slovenian National Building and Civil Engineering Institute (ZAG) |
|---|
| Year of publishing: | 2021 |
|---|
| Number of pages: | Str. 48-57 |
|---|
| PID: | 20.500.12556/DiRROS-17933  |
|---|
| UDC: | 621.742.4 |
|---|
| COBISS.SI-ID: | 64285187 |
|---|
| Copyright: | © 2021 Slovenian National Building and Civil Engineering Institute |
|---|
| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 24. 5. 2021;
|
|---|
| Publication date in DiRROS: | 22.01.2024 |
|---|
| Views: | 207 |
|---|
| Downloads: | 105 |
|---|
| Metadata: |     |
|---|
|
:
|
Copy citation |
|---|
| | | | Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
