Student Research Reports
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Sandless concrete
Organization(s):Saengthong vitthaya school
Country:Thailand
Student(s):Teeratatorn Suttiopo
Yanakorn Poonkaew
Natchanon Uttiya
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Educator(s):Teeratorn Suttipo
Contributors:
Report Type(s):Standard Research Report
Protocols:Aerosols
Language(s):Thai
Date Submitted:02/07/2025
This research therefore created sand-free concrete to help reduce the problems that would occur. The research team used rock dust instead of sand. Since rock dust is a material left over from use in a stone crushing plant, it is suitable as an alternative to help reduce waste. The results from testing the performance of sandless concrete are divided into tests. Determine the collapse value and determine the compressive strength of concrete using rock dust instead of sand in the standard ratio of 20kg. It was found that the values were 4±0.1cm and 285.7±0.1ksc, respectively. In addition, the effect of the amount of rock dust on the compressive strength of concrete was studied. It was found that the amount of rock dust 5Kg would give a maximum compressive strength value of 293.4±0.2ksc.