International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
www.irjet.net
Experimental Study on Assessment of Fly Ash and GGBS Based Geopolymer Mortar with Brick Waste Replacement to Fine Aggregates Pravin Shewale1, Pradnya Thorat2, Ashwini Bagat3, Aarti Patil4, Rohit Khaware5, Mayur Kamble6, S.B. Pawar7 123456 Student,
Department of Bachelor of Technology in Civil Engineering at Shree. Santakrupa Institute of Engineering and Technology, Ghogaon 7Assistant Professor, Department of Bachelor of Technology in Civil Engineering at Shree. Santakrupa Institute of Engineering and Technology, Ghogaon ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - This report generally consists of fly ash and
about 15 million cubic metres of construction debris each year.
GGBS based geopolymer mortar with replacement of sand with brick waste. Fly ash and GGBS percentage was varied as 0:100, 30:70, 50:50, 70:30, 100:0 %. Study was carried on different molarities of sodium hydroxide (NaOH) i.e. 4M, 6M, and 8M. Percentage of replacement of sand with brick waste was kept as 10%, 20% and 30%.
Investigations on cement production and its environmental effects have been conducted. It has been determined that a significant amount of Carbon Dioxide (CO2) is released into the atmosphere throughout the manufacturing process. The principal gas responsible for the greenhouse effect is carbon dioxide. Cement production accounts for around 5% of global CO2 emissions. According to research, 1 tonne of cement produced emits 1 tonne of CO2 into the environment (Neville 2012). It has been observed that cement demand is increasing day by day, and that by 2025, it will be close to 500 million tonnes. However, it is estimated that demand and production will lag behind by 230 million people.
Construction and demolition waste (CDW) valorization in a new production process has been widely studied. However, up to now, valorization has been limited to use one type of waste. Hence, the environmental and economic benefits remain quite narrow, particularly in countries with high waste production. It is reviewed that during manufacturing 1ton of cement, 1ton of CO2 is released into the atmosphere. Thus, to make up hand with the recent researches in the field of geopolymer concrete a small study has been carried out, which is further stated.
Rapid industrialization has resulted in an ever-increasing use of river sand for construction reasons in areas where river beds have become worn out. Several issues have surfaced, including increased river bed depth, decreased water table, increased salinity, and erosion of river embankments. As a result, investigating other materials as a fine aggregate in concrete to replace river sand became a must. Brick waste has emerged as a sensible alternative to meet such standards in this regard.
Sodium silicate and sodium hydroxide were used as alkaline activators. Ratio of Sodium silicate to sodium hydroxide was kept 2.5. Initial tests like normal consistency, final setting time, etc. were carried on each mix. Flow test was taken to fix a unique solution to binder ratio. Ambient curing of 70.6 x 70.6 x 70.6 mm cube for 28 days was performed and later tested for compressive strength. 100% of GGBS in geopolymer mortar shown optimum results. Further, an equation was developed to determine the predicated value of compressive strength which was obtained by experimental study. For that regression analysis was performed. Key Words: Mortar etc
1.1 What is Geopolymer Concrete? In 1978, Davidovits used the term "geopolymer" to describe materials defined by chains or networks of inorganic molecules. Amorphous alkali aluminosilicate or alkali-activated cements are two names for it. The reaction of a solid aluminosilicate powder with alkali hydroxide/alkali silicate produces geopolymers. It is mainly made up of a silicate monomer (–Si–O–Al–O–) that repeats itself.
Fly Ash, GGBS, Brick Waste, Geopolymer
1. INTRODUCTION The disposal or recycling of large volumes of waste materials from construction and demolition is one of the most serious environmental issues. Waste clay bricks bonded with cement mortar are one of the most common components found in these leftovers (masonry wasteMW). Only a metropolis like Bogotá, Colombia, produces
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Advantages: 1. Geopolymer concrete has a number of benefits over traditional concrete. It lasts significantly longer than
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