Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods
In this paper, the rheological parameters of alkaline activated cement (AAC) paste tailored for continuous extrusion using the non-traditional test method of the direct shear box test are presented. Characteristic changes of the material’s rheological behaviour are estimated in response to variation...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2019-01-01
|
| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2019/23/matecconf_ricon17_02005.pdf |
| _version_ | 1818414790496747520 |
|---|---|
| author | Kastiukas Gediminas Zhou Xiangming Yang Woon Y. |
| author_facet | Kastiukas Gediminas Zhou Xiangming Yang Woon Y. |
| author_sort | Kastiukas Gediminas |
| collection | DOAJ |
| description | In this paper, the rheological parameters of alkaline activated cement (AAC) paste tailored for continuous extrusion using the non-traditional test method of the direct shear box test are presented. Characteristic changes of the material’s rheological behaviour are estimated in response to variations in the water-to-solid ratio and addition of a cellulosic rheology aid. The results indicate that the increase of the water-to-solid ratio from 0.18 to 0.19 does not impact the internal angle of friction (φ) but does, however, reduce the shear yield strength, or cohesion (c), by 85%. For mixes containing cellulosic rheology aid, the internal angle of friction shows no significant change also. However, the shear yield strength for the mix with a water-to-solid ratio of 0.18 is 51% higher. The shear yield strength increases by a further 28% for the mix with a water-to-solid ratio of 0.19. These results indicate that the cellulosic rheology aid does not necessarily increase the "flow-like" characteristics of the mix which provides it plasticity and the ability to move through the extruder. It does however significantly improve its ‘green strength’, even at an increased water-to-solid ratio of 0.19, which would ultimately assist with lowering the binder density. |
| first_indexed | 2024-12-14T11:24:42Z |
| format | Article |
| id | doaj.art-1689ad9fccd4417e9a5c7a02b66b5014 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-14T11:24:42Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-1689ad9fccd4417e9a5c7a02b66b50142022-12-21T23:03:35ZengEDP SciencesMATEC Web of Conferences2261-236X2019-01-012740200510.1051/matecconf/201927402005matecconf_ricon17_02005Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test MethodsKastiukas GediminasZhou XiangmingYang Woon Y.In this paper, the rheological parameters of alkaline activated cement (AAC) paste tailored for continuous extrusion using the non-traditional test method of the direct shear box test are presented. Characteristic changes of the material’s rheological behaviour are estimated in response to variations in the water-to-solid ratio and addition of a cellulosic rheology aid. The results indicate that the increase of the water-to-solid ratio from 0.18 to 0.19 does not impact the internal angle of friction (φ) but does, however, reduce the shear yield strength, or cohesion (c), by 85%. For mixes containing cellulosic rheology aid, the internal angle of friction shows no significant change also. However, the shear yield strength for the mix with a water-to-solid ratio of 0.18 is 51% higher. The shear yield strength increases by a further 28% for the mix with a water-to-solid ratio of 0.19. These results indicate that the cellulosic rheology aid does not necessarily increase the "flow-like" characteristics of the mix which provides it plasticity and the ability to move through the extruder. It does however significantly improve its ‘green strength’, even at an increased water-to-solid ratio of 0.19, which would ultimately assist with lowering the binder density.https://www.matec-conferences.org/articles/matecconf/pdf/2019/23/matecconf_ricon17_02005.pdf |
| spellingShingle | Kastiukas Gediminas Zhou Xiangming Yang Woon Y. Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods MATEC Web of Conferences |
| title | Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods |
| title_full | Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods |
| title_fullStr | Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods |
| title_full_unstemmed | Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods |
| title_short | Testing Rheological Properties of Alkali-Activated Cement Using Non-Traditional Test Methods |
| title_sort | testing rheological properties of alkali activated cement using non traditional test methods |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2019/23/matecconf_ricon17_02005.pdf |
| work_keys_str_mv | AT kastiukasgediminas testingrheologicalpropertiesofalkaliactivatedcementusingnontraditionaltestmethods AT zhouxiangming testingrheologicalpropertiesofalkaliactivatedcementusingnontraditionaltestmethods AT yangwoony testingrheologicalpropertiesofalkaliactivatedcementusingnontraditionaltestmethods |