Potential using of marine sand in coastal areas of Vietnam to create concrete for rural roads
- Authors: Nu Thi Nguyen 1*, Son Truong Bui 1, Dung Ngoc Nguyen 1,2, Tuan Dinh Vu 1, Anh Tuan Bui 1, Hieu Xuan Do 1, Nghia Van Chu 1, Phuong Lam Thi Nguyen 1, Thai Van Le 3
Affiliations:
1 Hanoi University of Mining and Geology, Hanoi, Vietnam
2 Polytechnique Montreal, Montreal, Canada
3 Dong Phuong Inspection and Investigation Consultant Joint Stock Company, Hai Duong, Vietnam
- *Corresponding:This email address is being protected from spambots. You need JavaScript enabled to view it.
- Keywords: Compressive strength, Concrete, Marine sand, Rural road.
- Received: 23rd-June-2024
- Revised: 6th-Oct-2024
- Accepted: 28th-Oct-2024
- Online: 1st-Dec-2024
- Section: Geology - Mineral
Abstract:
In Vietnam, there is not enough sand from the river for the construction operation, and it is necessary to find other resources to replace it. Marine sand was distributed in large areas in the coastal area of Vietnam and was not used for rural roads. This paper presents experimental results on the workability and compressive strength of concrete which was made from Nghe An and Ha Tinh marine sand. The particle size of two marine sands is not fully suitable for use as fine aggregates in concrete according to TCVN 7570:2006. The Ha Tinh sand was more suitable for use as fine aggregates in concrete than Nghe An sand. Three grades of concrete (M20, M25, M30) were designed for testing. Fifty-four samples of concrete were mixed and cured for 3, 7, and 28 days. Results showed that the compressive strength of Ha Tinh concrete achieved the requirements of M20, M25, and M30 grade - concrete. Otherwise, the compressive strength of Nghe An concrete has only achieved the requirements of M10, M15, and M20 grade – concrete. The research results also showed that the concrete made from Ha Tinh sand can be used for the A, B, C, and D grades of rural roads and the concrete made from Nghe An sand can only be used for the C, D grades of rural roads. The workability of all concrete mixtures met the requirements of Vietnamese standards. The sea sand in the coastal area of Vietnam has enormous potential to produce concrete for rural roads.
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