A Study on Groundnut Husk Ash (GHA)–Concrete under Acid Attack
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 7
Abstract
This paper presents the findings of an investigation on the compressive strength of Groundnut Husk Ash (GHA)-Concrete and its resistance to acid attack. The GHA used was obtained by controlled burning of groundnut husk to a temperature of 600 oC and sieved through 75 µm sieve after allowing cooingl. The compressive strength of GHA-Concrete was investigated at replacement levels of 0, 5, 10, 20, 30 and 40 %, respectively by weight of cement. A total of ninety 150 mm cubes of GHA-Concrete grade 20 were tested for compressive strength at 3, 7, 28, 60 and 90 days of curing and the microstructure of GHA-Concrete samples at 0 and 10 % replacements were examined at 28 and 90 days of curing. Also, thirty six 100 mm cubes were subjected to attack from 10 % concentration of diluted solution of sulphuric acid (H2SO4) and nitric acid (HNO3), respectively. The result of the investigations showed that the compressive strength of concrete decreased with increase in GHA content. However 10 % replacement with GHA was considered as optimum for structural concrete. GHA provided a less compact microstructure of concrete at 28 and 90 days curing compared to OPC concrete as a result of low pozzolanic activity. The use of GHA in concrete improved its resistance against sulphuric acid, but not against nitric acid attack. The average weight loss of GHA concrete after 28 days of subjection in sulphuric acid and nitric acid were 16.3 % and 17.3 %, respectively as opposed to 22.4 % and 15.1 %, respectively for plain Portland cement concrete
Authors and Affiliations
Egbe-Ngu Ntui Ogork , Okorie Austine Uche , Augustine Uche Elinwa
Keywords
Related Articles
- EP ID EP110701
- DOI -
- Views 98
- Downloads 0
Vibration Analysis of Multiple Cracked Shaft
Crack in component if undetected may lead to catastrophic failure of the component. The cracked rotor problem received the first attention in 1970 and after that the interest among the researchers started. The vibr...
Data Routing in In-network Aggregation in WSN: a Cluster Based approach
: Large scale wireless sensor networks (WSNs) consists of many sensor nodes & these networks are deployed in different classes of applications for accurate monitoring, health, environment etc. The sensor node...
A Review on Implementation of TPM in Manufacturing Industry
The intent of the study is to appraise the challenges faced by manufacturing industries to implement Total Productive Maintenance (TPM). The scheme of this research is to critically analyze the factors influenc...
Modelling Nozzle throat as Rocket exhaust
The ejector mode of rocket-based combined cycles is a concept that has the ability to gain thrust from atmospheric air and reduce fuel consumption and thus reduce the cost of rocket launches. This thesis develops...
A Threshold fuzzy entropy based feature selection method applied in various benchmark datasets using Ant-miner algorithm
Large amount of data have been stored and manipulated using various database technologies. Processing all the attributes for the particular means is the difficult task. To avoid such difficulties, feature selec...