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The objective of this research was to study the properties of concrete containing aluminum powder instead of sand to produce lightweight concrete in the ratio of aluminum powder to replace sand, 0 to 20% by weight. The mixture ratio of Portland cement to fine aggregate to coarse aggregate was 1: 2: 4 and 10% of silica fume by weight of cement. The ratio of water to cement was 0.40. Study method, the limestone was sifted through a sieve No.3/4" and fine aggregate was sifted through a No. 15 sieve, aluminum powder was sifted through a No. 10 sieve. All ingredients, each size, were mixed with the concrete according to the specified ratio. The samplers were poured in a square shape mold size 10×10×10 cm, weighed and incubated in water for 7, 14 and 28 days. The results showed that concrete with aluminum powder produced air bubbles or voids in the concrete. This was caused by concrete containing aluminum powder reacted with water resulting in hydrogen gas production, which can be seen by the naked eyes. Compressive strength of concrete containing 5% aluminum powder had the highest compressive strength compared with the standard concrete block, Thai industrial standard TIS.57-1990 (Class A). The compressive strength was not less than 14 MPa or approximately 140 kg/cm2 was used to test. It was found that the samples of concrete with 5% aluminum powder (formula A-2) passed the test with the result of 218.02 kg/cm2. Therefore, concrete with aluminum powder can be used as a substitute for sand. The suitable and usable weight of mixture ratio is concrete containing 5% aluminum powder.
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Isarangkun Na Ayutthaya, B., Chantawong, P., & Ungkoo, Y. (2007). Study of mechanical properties of lightweight concrete steam mix with hyacinth fibers (Master's thesis). King Mongkut's Institute of Technology Ladkrabang, Bangkok. (in Thai)
Kamput, P. (2007). The Use of latex improve the tensile and thermal insulation properties of lightweight concrete steam (Master's thesis). Rajamangala University of Technology Thanyaburi, Pathum Thani. (in Thai)
Piyapanuwat, R., & Ruyruy, A. (2012). The use of lime mix fly ash instead of cement for the production of light weight from aluminum dust and pure aluminum powder (Master's thesis). King Mongkut's University of Technology Thonburi, Bangkok. (in Thai)
Thai Industrial Standards SCG. (2010). TIS for cement and applications (6th ed.). Bangkok: Ministry of Industry. (in Thai)
Youngyam, C., Srimuang, N., Chawpateep, P., & Noppharat, S. (2011). Effect of silica fume on the compression mortar for produce highstrength concrete in 24 hours (Bachelor's thesis). Rajamangala University of Technology Suvarnabhumi, Nonthaburi. (in Thai)