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Influence of Recycled Fine Aggregates on Strength Properties of Reactive Powder Mortar | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 38, 3A, 2020, Pages 288-294 PDF (281.38 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.30684/etj.v38i3A.265 | ||
| Authors | ||
| Doaa H. Nayyef* 1; Shatha S. Hasan2 | ||
| 1Civil Engineering Department, University of Technology, Baghdad, Iraq. [email protected] | ||
| 2Civil Engineering Department, University of Technology, Baghdad , Iraq. | ||
| Abstract | ||
| Although many researchers have done many studies on recycled aggregate concrete, information is very little about the influence of utilizing recycled aggregate in the production of reactive powder concrete. Experimental work was executed to investigate the influence of utilizing recycled concrete as fine aggregate in reactive powder concrete. Five different mixes were prepared, the first mix, or control mix, was prepared with natural sand, four additional mixes were prepared with different percentage of substitution of fine aggregates(20%,40%,60%, and 80%). The investigation was carried out using compressive strength test, direct tensile strength test and flexural strength test, and two methods of curing were used standard curing at 20 °C and steam curing at 90°C. the results indicated that the strength decreases with increased the percentage of recycled fine aggregate, and the best percentage was 40% replacement where the percentages of decrease at this percentage at 28-day steam curing were 2.46, 6.66, and 2.14 for compressive strength, flexural strength, and direct tensile strength respectively. | ||
| Keywords | ||
| Recycled Reactive Powder Concrete; sustainable construction; Compressive Strength; flexural strength; Direct tensile strength; local waste | ||
| References | ||
|
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[9] ASTM C 348-18 “Standard test method for flexural strength of hydraulic- cement mortars,” Annual Book of ASTM Standards, 1985.
[10] British Standard Part 116 “Method for determination of tensile strength of mortar,” British Standard Institution, pp. 6319-7, 1985. | ||
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