Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based Materials
Cement-based materials were investigated by comparing the strength and microstructure of pastes and mortar containing limestone powder or low quality fly ash. The compressive strength of the mortar at 28 and 90 d was examined whose microstructures were characterized by X-ray diffraction (XRD), scann...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/7528548 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832558970809614336 |
|---|---|
| author | Meijuan Rao Wan Tang Wei Zhou Yaning Kong Shuhua Liu |
| author_facet | Meijuan Rao Wan Tang Wei Zhou Yaning Kong Shuhua Liu |
| author_sort | Meijuan Rao |
| collection | DOAJ |
| description | Cement-based materials were investigated by comparing the strength and microstructure of pastes and mortar containing limestone powder or low quality fly ash. The compressive strength of the mortar at 28 and 90 d was examined whose microstructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis, and differential thermal analysis (TG-DTA). The results indicated that the strength of mortar decreased with increasing mineral admixtures. The limestone powder mainly acted as inert filler and hardly took part in the chemical reaction. Low quality fly ash may accelerate the formation of hydration products in samples with more chemically bonded water. This further resulted in a higher degree of cement hydration and denser microstructure, while the overall heat of hydration was reduced. At the early stage of hydration, low quality fly ash can be considered as an inert material whereas its reactivity at the later stage became high, especially for ground low quality fly ash. |
| format | Article |
| id | doaj-art-ebb19f61863d484a832565b99b6399a8 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-ebb19f61863d484a832565b99b6399a82025-02-03T01:31:12ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/75285487528548Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based MaterialsMeijuan Rao0Wan Tang1Wei Zhou2Yaning Kong3Shuhua Liu4Changjiang River Scientific Research Institute, Wuhan 430010, ChinaState Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, ChinaState Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, ChinaState Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, ChinaState Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, ChinaCement-based materials were investigated by comparing the strength and microstructure of pastes and mortar containing limestone powder or low quality fly ash. The compressive strength of the mortar at 28 and 90 d was examined whose microstructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis, and differential thermal analysis (TG-DTA). The results indicated that the strength of mortar decreased with increasing mineral admixtures. The limestone powder mainly acted as inert filler and hardly took part in the chemical reaction. Low quality fly ash may accelerate the formation of hydration products in samples with more chemically bonded water. This further resulted in a higher degree of cement hydration and denser microstructure, while the overall heat of hydration was reduced. At the early stage of hydration, low quality fly ash can be considered as an inert material whereas its reactivity at the later stage became high, especially for ground low quality fly ash.http://dx.doi.org/10.1155/2016/7528548 |
| spellingShingle | Meijuan Rao Wan Tang Wei Zhou Yaning Kong Shuhua Liu Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based Materials Advances in Materials Science and Engineering |
| title | Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based Materials |
| title_full | Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based Materials |
| title_fullStr | Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based Materials |
| title_full_unstemmed | Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based Materials |
| title_short | Influence of Inertia and Low Active Mineral Admixture on Strength and Microstructure of Cement-Based Materials |
| title_sort | influence of inertia and low active mineral admixture on strength and microstructure of cement based materials |
| url | http://dx.doi.org/10.1155/2016/7528548 |
| work_keys_str_mv | AT meijuanrao influenceofinertiaandlowactivemineraladmixtureonstrengthandmicrostructureofcementbasedmaterials AT wantang influenceofinertiaandlowactivemineraladmixtureonstrengthandmicrostructureofcementbasedmaterials AT weizhou influenceofinertiaandlowactivemineraladmixtureonstrengthandmicrostructureofcementbasedmaterials AT yaningkong influenceofinertiaandlowactivemineraladmixtureonstrengthandmicrostructureofcementbasedmaterials AT shuhualiu influenceofinertiaandlowactivemineraladmixtureonstrengthandmicrostructureofcementbasedmaterials |