Preparation and Optimization of Mix ratio for C50T Girder Manufactured Sand and Concrete

Honghong Ye (Yunnan Construction and Investment Holding Group Co., Ltd.)
Delin Zeng (Yunnan Construction and Investment Holding Group Co., Ltd.)
Yong Yang (Yunnan Construction and Investment Holding Group Co., Ltd.)
Xingbo Fan (Yunnan Construction and Investment Holding Group Co., Ltd.)
Wei Wang (Yunnan Construction and Investment Holding Group Co., Ltd.)
Pingbo Zao (Yunnan Construction and Investment Holding Group Co., Ltd.)
Zhusheng Yang (Yunnan Construction and Investment Holding Group Co., Ltd.)

Article ID: 3452

Abstract


Considering actual construction conditions of Binchuan-Heqing Highway, this paper provides the C50 mix ratio conforming to engineering requirements by strictly controlling the quality of raw materials, optimizing the design of mix ratio scientifically, preparing superior C50 concrete 0 with manufactured sand, and optimizing the concrete mix ratio based on the adjustment of fly ash replacement, water-cement ratio, polycarboxylate-type water reducer mixing amount, sand ratio, etc. The result indicates that, the water-cement ratio has a great influence on the concrete strength, and if the ratio of coal ash is high in the binding material, the early compressive strength of the concrete will increase slowly.


Keywords


Concrete; Mix ratio; Strength; Water-cement ratio

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References


[1] JTG/T 3650-2020, Technical Regulation on the Construction of Highway Bridges and Culverts[S].

[2] Xu Jian, Cai Jiwei, Wang Jiliang and Zhou Mingkai. Current Research Status of Manufactured Sand and Manufactured Sand Concrete [J]. Science and Technology of Overseas Building Materials, 2004, 25(3).

[3] Guan Aijun, Wang Jiliang, and Zhou Mingkai. Research on the Preparation and Application of C50T Diabase Concrete [J]. Highway, 2004, (5).

[4] Li Xinggui. Use of Man-made Sand with High Content Stone Powder in Concrete [J]. Journal of Building Materials, 2004, 7(1).

[5] NevilleAM, Written. Li Guopan and Ma Zhenyong, Translated. Performance of Concrete [M]. Beijing: China Architecture & Building Press, 1983.



DOI: https://doi.org/10.30564/frae.v4i2.3452

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