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A platform for research: civil engineering, architecture and urbanism
Chemical durability of superabsorbent polymer (SAP) based geopolymer mortars (GPMs)
Highlights Chemical durability of superabsorbent polymers based geopolymer mortars was assessed. Superabsorbent polymers based geopolymer mortars offered good resistance to acid, sulfate, and chloride attack. Using superabsorbent polymer offers a protective effect on the microstructure of geopolymer mortars. Use of superabsorbent in geopolymers demonstrated a greater degree of geopolymerization.
Abstract This study investigates the durability of superabsorbent polymer (SAP) based geopolymer mortars (GPMs) against acid, sulfate, and chloride attack. Nine mix formulations containing 0, 1, and 2% SAP content by weight of fly ash were prepared. All the samples were cured at 80 °C, followed by curing at room temperature for 24 h. The specimens were immersed in the chemical solutions of 5% hydrochloric acid (HCl), 5% sodium sulfate (Na2SO4), and 5% calcium chloride (CaCl2) for 180 days. Thereafter, the durability performance of GPMs was evaluated based on the change in weight and change in compressive strength of the specimens. Based on the results, it was deduced that SAP based GPMs were less vulnerable to chemical attack. Furthermore, deterioration effects were lower due to improved sorptivity and porosity values. The X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscope (SEM), and Energy Dispersion X-ray Spectroscopy (EDX) analyses revealed that the inclusion of SAP improves the chemical durability of GPMs.
Chemical durability of superabsorbent polymer (SAP) based geopolymer mortars (GPMs)
Highlights Chemical durability of superabsorbent polymers based geopolymer mortars was assessed. Superabsorbent polymers based geopolymer mortars offered good resistance to acid, sulfate, and chloride attack. Using superabsorbent polymer offers a protective effect on the microstructure of geopolymer mortars. Use of superabsorbent in geopolymers demonstrated a greater degree of geopolymerization.
Abstract This study investigates the durability of superabsorbent polymer (SAP) based geopolymer mortars (GPMs) against acid, sulfate, and chloride attack. Nine mix formulations containing 0, 1, and 2% SAP content by weight of fly ash were prepared. All the samples were cured at 80 °C, followed by curing at room temperature for 24 h. The specimens were immersed in the chemical solutions of 5% hydrochloric acid (HCl), 5% sodium sulfate (Na2SO4), and 5% calcium chloride (CaCl2) for 180 days. Thereafter, the durability performance of GPMs was evaluated based on the change in weight and change in compressive strength of the specimens. Based on the results, it was deduced that SAP based GPMs were less vulnerable to chemical attack. Furthermore, deterioration effects were lower due to improved sorptivity and porosity values. The X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscope (SEM), and Energy Dispersion X-ray Spectroscopy (EDX) analyses revealed that the inclusion of SAP improves the chemical durability of GPMs.
Chemical durability of superabsorbent polymer (SAP) based geopolymer mortars (GPMs)
Afridi, Suleman (author) / Sikandar, Muhammad Ali (author) / Waseem, Muhammad (author) / Nasir, Hasan (author) / Naseer, Amjad (author)
Construction and Building Materials ; 217 ; 530-542
2019-05-14
13 pages
Article (Journal)
Electronic Resource
English
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