TY  - JOUR
KW  - Compressive strength; Gasoline; Hydrocarbons; Manufacture; Mixtures; Mortar; Optimization; Water absorption
KW  -  Cement-based; Environmental issues; Large volumes; Oily sludges; Optimisations; Petroleum extraction; Petroleum hydrocarbon; Response-surface methodology; Water to cement (binder) ratios; Water-to-cement ratios
KW  -  Cements
SN  - 19961944
PB  - MDPI
JF  - Materials
IS  - 21
A1  - Kankia, M.U.
A1  - Baloo, L.
A1  - Danlami, N.
A1  - Samahani, W.N.
A1  - Mohammed, B.S.
A1  - Haruna, S.
A1  - Jagaba, A.H.
A1  - Abubakar, M.
A1  - Ishak, E.A.
A1  - Sayed, K.
A1  - Zawawi, N.A.B.W.
N1  - cited By 14
AV  - none
Y1  - 2021///
TI  - Optimization of cement-based mortar containing oily sludge ash by response surface methodology
N2  - In the industries of petroleum extraction, a large volume of oily sludge is being generated. This waste is usually considered difficult to dispose of, causing environmental and economic issues. This study presented the novel experimental method of manufacturing mortar used in civil construction by cement and oily sludge ash (OSA). The defined method was described with a logical experimental study conducted to examine a feasible manufacturing method for casting cement-based mortars by partially replacing cement with OSA. Replacement concentrations for OSA ranged from 0 to 20 percent by cement weight, while the water-to-cement (w/c) ratio was varied from 0.4 to 0.8, and the amount of sand was kept constant. The strengths and absorption rate of the mortar were monitored for 28 days. The OSA contains a crystalline structure with packs of angular grains. Because of OSA in the cement-based mortar mixtures and water-to-cement ratios, the mechanical strength was improved significantly. However, the water absorption trend increased linearly. Using variance analysis, the influence of OSA and w/c ratio on the behavior of mortar was acquired. The developed models were significant for all p-value reactions of <5. Numerical optimization results showed that the best mixture can be obtained by replacing 8.19 percent cement with OSA and 0.52 as a ratio of w/c. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
ID  - scholars14309
VL  - 14
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85117826576&doi=10.3390%2fma14216308&partnerID=40&md5=b590f1a2c236ec302d7e822fd5fcbe17
ER  -