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https://dspace.ctu.edu.vn/jspui/handle/123456789/62932
Title: | Research on the production of fly ash based-lightweight aggregate for concrete |
Authors: | Bui, Le Anh Tuan Duong, Hoang Bao Khanh Nguyen, Van Thanh Huynh, Trong Phuoc |
Keywords: | Fly ash Lightweight aggregate Lightweight concrete Cold bonding method Water absorption Compressive strength |
Issue Date: | 2019 |
Series/Report no.: | Tạp chí Xây dựng Việt Nam;Số 610 .- Tr.151-153 |
Abstract: | This work investigates the feasibility of production of lightweight aggregate (LWA) using local fly ash in the Mekong Delta region by the cold bonding method. LWA was produced by adding 3-14% cement to fly ash by pelletization process. The tap water was used as a wetting agent. The selected LWAs were used as coarse aggregate for producing lightweight concrete (LWC). Results showed that LWA with bulk density of around l.Q g/cm3, water absorption in the range of 12.8-16%, and crushing strength as high as 1.14 MPa can be produced, Tire 28-day compressive sLrength values of LWCs were in the range of 17.5-25.1 MPa at the water-to-cement ratio of 0.30. There was a significant reduction in the dry unit weight of LWC, reaching 1.87 g/cm3. The water absorption of LWC was higher than that of normal concrete. |
URI: | https://dspace.ctu.edu.vn/jspui/handle/123456789/62932 |
ISSN: | 0866-8762 |
Appears in Collections: | Xây dựng |
Files in This Item:
File | Description | Size | Format | |
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_file_ Restricted Access | 1.64 MB | Adobe PDF | ||
Your IP: 18.116.85.96 |
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