The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar
In this study, the ground fly ash is made of ordinary grade I fly ash by grinding. Compared with grade I fly ash, the influence of ground fly ash on cement hydration and mechanical property of mortar was investigated. The results show that ground fly ash can improve the hydration of cement at all th...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/4023178 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832549555625787392 |
|---|---|
| author | Jingjing Feng Jianwei Sun Peiyu Yan |
| author_facet | Jingjing Feng Jianwei Sun Peiyu Yan |
| author_sort | Jingjing Feng |
| collection | DOAJ |
| description | In this study, the ground fly ash is made of ordinary grade I fly ash by grinding. Compared with grade I fly ash, the influence of ground fly ash on cement hydration and mechanical property of mortar was investigated. The results show that ground fly ash can improve the hydration of cement at all the ages compared with grade I fly ash, and not only does its pozzolanic reaction start earlier, but the reaction degree is higher and the speed is quicker. Before 3 days, the contribution of ground fly ash to the strength is mainly due to physical filling and microaggregate effect. After that, the contribution of pozzolanic effect to the strength becomes obvious and can significantly increase the compressive strength after 60 days and the flexural strength after 28 days. The ground fly ash is better than grade I fly ash to optimize the pore structure of hardened pastes. It can significantly reduce the number of harmful pores (>20 nm) and increase the number of harmless pores (<20 nm), which refines the pore structure and makes the structure denser. |
| format | Article |
| id | doaj-art-fad6cc24dc6243e7a94c2f06dc25ab9f |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-fad6cc24dc6243e7a94c2f06dc25ab9f2025-02-03T06:11:05ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/40231784023178The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of MortarJingjing Feng0Jianwei Sun1Peiyu Yan2College of Hydraulic and Civil Engineering, Shandong Agricultural University, Tai’an, Shandong 271018, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, ChinaDepartment of Civil Engineering, Tsinghua University, Beijing 100084, ChinaIn this study, the ground fly ash is made of ordinary grade I fly ash by grinding. Compared with grade I fly ash, the influence of ground fly ash on cement hydration and mechanical property of mortar was investigated. The results show that ground fly ash can improve the hydration of cement at all the ages compared with grade I fly ash, and not only does its pozzolanic reaction start earlier, but the reaction degree is higher and the speed is quicker. Before 3 days, the contribution of ground fly ash to the strength is mainly due to physical filling and microaggregate effect. After that, the contribution of pozzolanic effect to the strength becomes obvious and can significantly increase the compressive strength after 60 days and the flexural strength after 28 days. The ground fly ash is better than grade I fly ash to optimize the pore structure of hardened pastes. It can significantly reduce the number of harmful pores (>20 nm) and increase the number of harmless pores (<20 nm), which refines the pore structure and makes the structure denser.http://dx.doi.org/10.1155/2018/4023178 |
| spellingShingle | Jingjing Feng Jianwei Sun Peiyu Yan The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar Advances in Civil Engineering |
| title | The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar |
| title_full | The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar |
| title_fullStr | The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar |
| title_full_unstemmed | The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar |
| title_short | The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar |
| title_sort | influence of ground fly ash on cement hydration and mechanical property of mortar |
| url | http://dx.doi.org/10.1155/2018/4023178 |
| work_keys_str_mv | AT jingjingfeng theinfluenceofgroundflyashoncementhydrationandmechanicalpropertyofmortar AT jianweisun theinfluenceofgroundflyashoncementhydrationandmechanicalpropertyofmortar AT peiyuyan theinfluenceofgroundflyashoncementhydrationandmechanicalpropertyofmortar AT jingjingfeng influenceofgroundflyashoncementhydrationandmechanicalpropertyofmortar AT jianweisun influenceofgroundflyashoncementhydrationandmechanicalpropertyofmortar AT peiyuyan influenceofgroundflyashoncementhydrationandmechanicalpropertyofmortar |