Mechanical properties of concrete using manufactured sand and natural fine sand in bridge construction
Email:
nguyenducdung@utc.edu.vn
Keywords:
rock powder content, concrete, fine sand, crushed sand.
Abstract
A large amount of particles whose size is less than 0.075 mm in crushed sand is called rock powder. The content of rock powder in crushed sand has a direct influence on the mechanical properties of concrete. A sufficient amount of stone powder has a positive effect on filling the voids between aggregate particles and cement particles, increasing the strength of concrete, but the content of rock powder exceeds the limit value, the strength tends to decrease. Therefore, it is necessary to determine the appropriate stone powder content in concrete mixes using crushed sand. In the content of this paper, we present experimental results on concrete samples using crushed sand (CN) from Andesite rock mixed with fine sand (CM) in the Mekong Delta according to ratio CN/CM=60/40 and stone powder content varied from 2% to 7%. Research results show that, concrete mix has the highest value of compressive strength, tensile strength in bending, split compressive strength and elastic modulus when the content of rock powder in crushed sand is 3.5%.References
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[3]. K. Marar, T. Celik, Effects of crushed stone dust on some properties of concrete, Cement and Concrete Research, 26 (1996) 1121-1130. https://doi.org/10.1016/0008-8846(96)00078-6
[4]. A.E. Ahmed, A.A. El-Kourd, Properties of Concrete Incorporating Natural and Crushed Stone Very Fine Sand, ACI Materials Journal, 86 (1989) 417-424.
[5]. N.S. Ahn, W.D. Fowler, an experimental study on the guidelines for using higher contents of aggregate microfines in portland cement concrete, International center for aggregates research - Research Report ICAR 102-1F, 2001.
[6]. F. Li, Q. Zhu, G. Zhanfang, Study on Durability of Concrete with Machine-Made Sand Part II: Long-Term Carbonization, Applied Mechanics and Materials, 438 (2013) 10-14. https://doi.org/10.4028/www.scientific.net/AMM.438-439.10
[7]. Q.V. Vũ, Nghiên cứu một số cấp phối và tính chất chủ yếu của bê tông tự lèn dùng cát nghiền, Tạp chí khoa học kỹ thuật Thủy lợi và môi trường, 33 (2011) 112-116.
[8]. ASTM C33/C33M, Standard specifications for Concrete Aggregates, 2016.
[9]. AASHTO M6, Standard specifications Roads and Bridges, 2017.
[10]. ACI 211.4R-08, Guide for Selecting Proportions for High-Strength Concrete Using Portland Cement and Other Cementitious Materials, Reported by ACI Committee 211, 2008.
[11]. ACI 318-19, Building Code Requirements for Structural Concrete, Reported by ACI Committee 318, 2019.
[12]. TCVN 11823, Tiêu chuẩn Quốc gia về thiết kế cầu đường bộ Việt Nam, 2017.
[13]. S.Ahmad, S. Shah, Structural properties of high strength concrete and its implications for precasting prestressed concrete, Prestressed Concrete Inst., 30 (1985) 92-119. https://doi.org/10.15554/pcij.11011985.92.119
[14]. R. L. Carrasquillo, A.H. Nilson, F.O. Slate, Properties of High Strength Concrete Subjected to Short-Term Loads, ACI JOURNAL, Proceedings , 78 (1981) 171-178.
[15]. ACI 363R-10, Report on High-Strength Concrete, Reported by ACI Committee 363, 2010.
[16]. CEB-FIP-2010, Fib Model Code for Concrete Structures, 2010.
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Received
14/07/2021
Revised
23/08/2021
Accepted
23/09/2021
Published
15/02/2022
Type
Research Article
How to Cite
Nguyễn Đức, D., Nguyễn Duy, T., & Thái Khắc, C. (1644858000). Mechanical properties of concrete using manufactured sand and natural fine sand in bridge construction. Transport and Communications Science Journal, 73(2), 100-110. https://doi.org/10.47869/tcsj.73.2.1
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