title: Development of UHPC mixtures utilizing natural and industrial waste materials as partial replacements of silica fume and sand.
abstract: In the exploratory study presented in this paper, an attempt was made to develop different mixtures of ultrahigh performance concrete (UHPC) using various locally available natural and industrial waste materials as partial replacements of silica fume and sand. Materials such as natural pozzolana (NP), fly ash (FA), limestone powder (LSP), cement kiln dust (CKD), and pulverized steel slag (PSS), all of which are abundantly available in Saudi Arabia at little or no cost, were employed in the development of the UHPC mixtures. A base mixture of UHPC without replacement of silica fume or sand was selected and a total of 24 trial mixtures of UHPC were prepared using different percentages of NP, FA, LSP, CKD, and PSS, partially replacing the silica fume and sand. Flow and 28-d compressive strength of each UHPC mixture were determined to finally select those mixtures, which satisfied the minimum flow and strength criteria of UHPC. The test results showed that the utilization of NP, FA, LSP, CKD, and PSS in production of UHPC is possible with acceptable flow and strength. A total of 10 UHPC mixtures were identified with flow and strength equal to or more than the minimum required.
authors.affiliation: Civil and Environmental Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
authors.forename: Shamsad
authors.identifier: 0000-0001-7939-7319
authors.initials: S
authors.lastname: Ahmad
authors.affiliation: Civil and Environmental Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
authors.forename: Ibrahim
authors.identifier: 0000-0003-4706-6130
authors.initials: I
authors.lastname: Hakeem
authors.affiliation: Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
authors.forename: Mohammed
authors.identifier: 0000-0002-9718-6766
authors.initials: M
authors.lastname: Maslehuddin
mesh_terms: D002119:Calcium Carbonate / Q000032:analysis; D060729:Coal Ash / Q000032:analysis; D003252:Construction Materials / Q000032:analysis* / Q000592:standards; D007220:Industrial Waste / Q000032:analysis; D008422:Materials Testing; D012037:Refuse Disposal / Q000379:methods*; D012822:Silicon Dioxide; D014866:Waste Products / Q000032:analysis*
chemical_list: D060729:Coal Ash; D007220:Industrial Waste; D014866:Waste Products; D012822:Silicon Dioxide; D002119:Calcium Carbonate