Work

Waste Phosphogypsum – Toward Sustainable Reuse in Calcium Sulfoaluminate Cement Based BuildingMaterials

Year: 2013

Type: article

Abstract: The Croatian fertilizer plant Petrokemija d.d. – Kutina produces phosphoric acid by the wet process natural phosphate rock sulfuric acid digestion. Unfortunately, large quantities of phosphogypsum are produced by this process as an unwanted byproduct. In this work, calcium sulfoaluminate cement production has been investigated as a possible way of phosphogypsum reuse. Due to the use of large quantities of industrial byproducts of various origins for calcium sulfoaluminate cement production, radionuclide activity has been determined and found to be lower than permissible levels. Mechanical properties of standard 3:1 mortar specimens have been determined from 5 kg pilot scale batches, and 28-day compressive strengths are somewhat less than 20 MPa. Mineralogical composition of calcium sulfoaluminate cement prepared has been determined by qualitative X-ray diffraction powder analysis showing the presence of Klein compound but also sulfospurrite that could contribute to the further increase in long-term strength.

Source: Hrčak Portal of scientific journals of Croatia (University Computing Centre)

Authors: Franković Mihelj, N., Ukrainczyk, N., Leakovic, S., Šipušić, J.

Institutions: Fond za zaštitu okoliša i energetsku učinkovitost, University of Zagreb

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: green

OpenAlex ID: W2134781014

FWCI: 1.337

Cites:

Cited by: 12

Related to: 10