Open AccessEvaluation of mechanical properties of high-strength concrete with sustainable materials
Author(s) -
Ahmed A. Mohammed Ali,
Roua Suhail Zidan,
Baraa J.M. AL-Eliwi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/745/1/012147
Subject(s) - fly ash , portland cement , compressive strength , aggregate (composite) , materials science , curing (chemistry) , cement , young's modulus , environmental pollution , composite material , municipal solid waste , environmental science , waste management , pulp and paper industry , engineering , environmental protection
This research deals with green concrete which is defined as environmental-friendly material that contains the waste material, and its production does not cause environmental pollution. Also, it has high performance and life sustainability. In this investigation, the effect of the curing period on the properties of green concrete made with different percentages of fly ash and recycled coarse aggregate has been studied. Nine mixtures with varying percentages of replacement of fly ash (25% and 50%) and recycled coarse aggregate (RCA) (25% and 50%) were prepared. In addition to the control mixture with 100% ordinary Portland cement and 100% normal coarse aggregate to compare the results. The standard concrete cylinders (150 x 300 mm) and cubes (150 x150 x150 mm) were prepared and tested at different ages (7, 14, 28, and 60 days) to get the compressive strength, splitting strength, and modulus of elasticity. The results showed that no noticeable effect on the cementing efficiency of fly ash if its replacement ratio has no more than 50% of cement, as well as, recycled coarse aggregate has no significant effect on concrete strengths when the replacement ratio of natural aggregate less than 50%.