Open AccessEvaluation of Cassava Effluent as Organic Admixture in Concrete Production for Farm Structures
Author(s) -
H. Uguru,
O. I. Akpokodje,
G. G. Agbi
Publication year - 2020
Publication title -
turkish journal of agricultural engineering research
Language(s) - English
Resource type - Journals
ISSN - 2717-8420
DOI - 10.46592/turkager.2020.v01i02.005
Subject(s) - effluent , compressive strength , absorption of water , curing (chemistry) , cement , tap water , pulp and paper industry , environmental science , materials science , composite material , environmental engineering , engineering
This paper evaluated the influence of cassava effluent on thecompressive strength of concrete for farm structures. Three setsof concrete cubes were produced with a concrete mix ratio of 1:2:4(C 15) and a water to cement ratio (w c-1) of 0.5. The 1st set wasproduced with 100% fresh water (tap water). The 2nd set wasproduced with 75% partial replacement of the fresh water withfresh cassava effluent, while the 3rd set was produced with 75%partial replacement of the fresh water with old cassava effluent.The density, water absorption rate and compressive strength ofthe concrete cubes was tested in accordance with ASTMInternational standards, at the end of 7, 14, 21, 28 and 56 curingdays. The results revealed that, the cassava effluent slightlyincreased the cubes density; but reduced their water absorptionrate. The study further showed that, concrete produced withfresh cassava effluent, developed the highest compressivestrength (29.57 MPa) at the end of the 56th curing day. Incontrast, concrete produced with old cassava effluent developedthe lowest compressive strength (24.43 MPa) at day 56, whichwas lower than the compressive strength of 27.18 MPadeveloped by the concrete produced with fresh water (also at day56). In addition, the cassava effluent retarded the initial rate ofstrength development, as such, increasing its prospect as anorganic concrete admixture. This study will be helpful inmitigating the harmful effects of cassava effluent in theenvironment, since it can be utilized in concrete production.