Workability and Water Absorption of Nano-Silica with Natural Fiber to Improve the Properties of Recycled Aggregate Concrete

Abstract

This research presents waste materials from the construction industry to be recycled to replace natural coarse aggregates. This takes the place of the weight of the coarse aggregate divided by a ratio of 0 to 100 percent. Cement was replaced with nano-silica, with an average particle size of about 12 nm, in a ratio of 3 percent of cement weight. Sisal and oil palm fibers with a 20 mm fiber length were employed in this study and were added to each sample at a rate of 3 percent per weight of coarse aggregate. Evaluate the concrete's workability for concrete flow and slump. Concrete's resistance to water absorption is tested for durability. According to the test results, using recycled aggregates or nano-silica components significantly decreased the workability of concrete. To improve the workability of the concrete The slump value of concrete is 5.9-7.3 cm. the flow rate of fresh concrete is 35-44 cm., a corresponding amount of superplasticizer must be added. In terms of the durability test results for concrete In the water absorption section, it was found that, it was found that nano-silica containing concrete, when compared to normal concrete and concrete made with natural fiber materials, had the maximum water absorption were 10.06 percent, 8.87 percent respectively. It was determined that recycled aggregates and natural coarse aggregates could both improve from the addition of nano-silica components.