Abstract
The use of various fibres such as steel, glass, sugarcane bagasse, and others has a considerable impact on the fresh and hardened properties of concrete. Sugarcane bagasse fibre is a byproduct from the sugarcane industry that can be reused as a concrete fibre. This paper objective is to work on the behaviour of sugarcane bagasse fibre on low calcium fly ash and slag based geopolymer concrete of G40 which is equivalent to M40 grade, when it is exposed to 5% sulphate attack with the help of experiments. The specimens were casted, GPC and GPCF Cured in an oven at 60 ° C for 24 hours, then let to cure in the atmosphere until the test is complete. After 28 days, the specimens were immersed in sulphates such as Na2SO4 and MgSO4 for 15, 45, and 75 days, and then tested according to codal standards on 15, 45, and 75 days. The comparisons were made in a controlled concrete environment (CC), controlled concrete with sugarcane bagasse fibre (CCF), geopolymer concrete (GPC) and geopolymer concrete with sugarcane bagasse fibre (GPCF). From the results it is observed that CCF and GPCF showed more resistant than CC and GPC when it is subjected to sulphate attack.
Highlights
Construction field is the fastest growing field in worldwide
For each of two cubes, the surface degradation of each corner of the affected face and the opposite face is measured in millimetres, and the acid attack factors per face are determined as follows: Acid Attack Factors (AAFs) and Acid Durability Factors (ADFs) of concrete environment (CC), concrete with sugarcane bagasse fibre (CCF), GPC, and sugarcane bagasse fibre reinforced geopolymer concrete specimens exposed to 5% MgSO4 and Na2SO4 solutions are shown in the figures
The loss of compressive strength of CCF and geopolymer concrete with sugarcane bagasse fibre (GPCF) decreased by 10.75% and 9.18% respectively when it is compared with CC and GPC under sodium sulphate attack for a period 75 days
Summary
Construction field is the fastest growing field in worldwide. Cement is the main constituent in the controlled concrete and behaves as a binder material. For production of OPC requires large amount of raw materials. Each tonne of cement produced releases about one tonne of CO2. In this case geopolymer concrete is the best alternative. Iron and metal production produces byproducts such as flyash or slag used in concrete helps to lead a cleaner environment. By use of these byproducts produced from various industries results in environmental and economic benefit. By use of geopolymer concrete we can reduce the usage of ordinary Portland cement the production of cement decreases and green house gases releasing into the atmosphere decreases. Sugarcane bagasse fibre is a by-product from sugar industries and can be used as a fibre in concrete
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