Seismic velocity of P-waves to evaluate strength of stabilized soil for Svenska Cellulosa Aktiebolaget Biorefinery Östrand AB, Timrå

• Main Authors: Lindh, Per, Lemenkova, Polina
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2022
• Subjects: Sciences de l'ingénieur; Métallurgie et mines; Sondages géologiques; Sciences exactes et naturelles; Géologie et minéralogie; Hydrogéologie; Mécanique des roches; Minéralogie; Sédimentologie; Séismologie; Enseignement des sciences de l'ingénieur; Autres disciplines physiques; Mécanique des sols; Résistance des matériaux; Résistance et comportement des matériaux; Construction; L74; Model Construction and Estimation; C51; Metals and Metal Products; Cement; Glass; Ceramics; L61; Industry Studies: Primary Products and Construction: Other; L79; Optimization Techniques; Programming Models; Dynamic Analysis; C61; Computational Techniques; C63; Information and Internet Services; Computer Software; L86; Data Collection and Data Estimation Methodology; Computer Programs: General; C80; Computer Programs: Other Computer Software; C88; Air Pollution; Water Pollution; Noise; Hazardous Waste; Solid Waste; Recycling; Q53; Renewable Resources and Conservation: Water; Q25; North Sweden
• Online Access: http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/344052; https://dipot.ulb.ac.be/dspace/bitstream/2013/344052/3/2926_BPASTS_2022_70_4.pdf

Evaluating soil strength by geophysical methods using P-waves was undertaken in this study to assess the effects of changed binder ratios on stabilisation and compression characteristics. The materials included dredged sediments collected in the seabed of Timrå region, north Sweden. The Portland cement (Basement CEM II / A-V, SS EN 197-1) and Ground Granulated Blast Furnace Slag (GGBFS) were used as stabilisers. The experiments were performed on behalf of the Svenska Cellulosa Aktiebolaget (SCA) Biorefinery Östrand AB pulp mill. Quantity of binder included 150, 120 and 100 kg. The properties of soil were evaluated after 28, 42, 43, 70, 71 and 85 days of curing using applied geophysical methods of measuring the travel time of primary wave propagation. The P-waves were determined to evaluate the strength of stabilised soils. The results demonstrated variation of P-waves velocity depending on stabilising agent and curing time in various ratios: Low water / High binder (LW HB), High water / Low binder (HW LB) and percentage of agents (CEM II / A-V/GGBFS) as 30%/70%, 50%/50% and 70%/30%. The compression characteristics of soils were assessed using Uniaxial Compressive Strength (UCS). The P-wave velocities were higher for samples stabilized with LW HB compared to those with HW LB. The primary wave propagation increased over curing time for all stabilized mixes along with the increased UCS, which proves a tight correlation with the increased strength of soil solidified by the agents. Increased water ratio gives a lower strength by maintained amount of binder and vice versa. SCOPUS: ar.j SCOPUS: ar.j info:eu-repo/semantics/published