Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ash
Steam-cured concrete plays an imperative role in contemporary construction, particularly in the urban region where the progress of the project is one of the main keys for cost savings. However, steam curing can cause several adverse impacts on the mechanical and durability performances of concrete i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522002789 |
| _version_ | 1828729023773016064 |
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| author | Van Mien Tran Le Thi Nguyen Thi Hai Yen Nguyen |
| author_facet | Van Mien Tran Le Thi Nguyen Thi Hai Yen Nguyen |
| author_sort | Van Mien Tran |
| collection | DOAJ |
| description | Steam-cured concrete plays an imperative role in contemporary construction, particularly in the urban region where the progress of the project is one of the main keys for cost savings. However, steam curing can cause several adverse impacts on the mechanical and durability performances of concrete in long term. The macroscale properties of concrete are mainly controlled by the properties of cement paste. This research aims to find out the appropriate treatment stage of steam curing on blended cement paste and the optimum quantity of fly ash substituted in the paste that not only can achieve the design strength in short term but also be able to alleviate the detrimental impacts of heat treatment in long term. Cement pastes incorporating 0, 20, 35, and 50 wt% fly ash were mixed at a water/binder ratio of 0.28 and cast into the mold with a size of 50 × 50 × 50 mm. Then, these paste specimens were treated with the treatment stage at 55 °C, 70 °C, and 85 °C for various hours. The compressive strength and the hydration degree of fly ash were measured over 545 days. The results indicated that the treatment stage with the temperature of 70 °C applied for 4 h existed to be adequate to promote the early strength while the substitution of 35% fly ash happened to be the optimum quantity. |
| first_indexed | 2024-04-12T14:25:39Z |
| format | Article |
| id | doaj.art-ced78c88f266414fa4db0f042d48beb7 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-12T14:25:39Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-ced78c88f266414fa4db0f042d48beb72022-12-22T03:29:27ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e01146Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ashVan Mien Tran0Le Thi Nguyen1Thi Hai Yen Nguyen2Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh 700000, Viet Nam; Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc Dist, Ho Chi Minh City 70000, Viet NamQuality Assurance and Testing Center 3, 49 Pasteur Str, District 1, Ho Chi Minh City, Viet NamCivil Engineering Faculty, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Ward 4, Go Vap District, Ho Chi Minh City, Viet Nam; Corresponding author.Steam-cured concrete plays an imperative role in contemporary construction, particularly in the urban region where the progress of the project is one of the main keys for cost savings. However, steam curing can cause several adverse impacts on the mechanical and durability performances of concrete in long term. The macroscale properties of concrete are mainly controlled by the properties of cement paste. This research aims to find out the appropriate treatment stage of steam curing on blended cement paste and the optimum quantity of fly ash substituted in the paste that not only can achieve the design strength in short term but also be able to alleviate the detrimental impacts of heat treatment in long term. Cement pastes incorporating 0, 20, 35, and 50 wt% fly ash were mixed at a water/binder ratio of 0.28 and cast into the mold with a size of 50 × 50 × 50 mm. Then, these paste specimens were treated with the treatment stage at 55 °C, 70 °C, and 85 °C for various hours. The compressive strength and the hydration degree of fly ash were measured over 545 days. The results indicated that the treatment stage with the temperature of 70 °C applied for 4 h existed to be adequate to promote the early strength while the substitution of 35% fly ash happened to be the optimum quantity.http://www.sciencedirect.com/science/article/pii/S2214509522002789Steam curingTreatment stageFly ashReaction degreeOptimum fly ash content |
| spellingShingle | Van Mien Tran Le Thi Nguyen Thi Hai Yen Nguyen Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ash Case Studies in Construction Materials Steam curing Treatment stage Fly ash Reaction degree Optimum fly ash content |
| title | Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ash |
| title_full | Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ash |
| title_fullStr | Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ash |
| title_full_unstemmed | Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ash |
| title_short | Enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long-term compressive strength and reaction degree of fly ash |
| title_sort | enhancing the effectiveness of steam curing for cement paste incorporating fly ash based on long term compressive strength and reaction degree of fly ash |
| topic | Steam curing Treatment stage Fly ash Reaction degree Optimum fly ash content |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522002789 |
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