Recent Developments in Environmentally Sustainable and Cost-Effective Construction Materials

The effects of additives on the flow characteristics of drilling muds used in various drilling operations, including oil and gas wells, must be better quantified. In this study, acrylamide polymer was used to modify water-based bentonite mud to reduce the yield point and maximum shear stress produce...

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Médium:	E-kniha
Jazyk:	angličtina
Vydáno:	Basel MDPI - Multidisciplinary Digital Publishing Institute 2023
Témata:	acetates acid resistance alkali activation bonding strength cellulose fibre cement replacement compressive strength concentric cylinder geometry concrete construction waste continuous performance grade curing age curing conditions curing periods date palm fiber Delta T Critical durability durability properties empirical equation empirical model energy absorption capacity engineering characteristics engineering properties fiber reinforcement fibers and environment fibre reinforcement fibrous concrete flexural ductility fracture mechanics fresh properties ground tire rubber History of engineering and technology LAS life cycle lime-based concrete limestone powder long-term free drying shrinkage matrix suction mechanical characteristics mechanical properties meso-mechanical micro-fibers mix proportion modeling MSCR natural pozzolan non-destructive properties optimization parallel plate geometry recycling representative volume element (RVE) response surface methodology rubberized self-compacted concrete self-compacted geopolymer concrete (SCGC) self-compacting concrete silica fume slag/fly ash slump flow soil–water characteristic curve sorptivity steel fiber sulfuric acid supplementary binder Technology, Engineering, Agriculture, Industrial processes Technology: general issues tensile properties thermal cycles unsaturated soil vegetated slope vetiver root system morphology waste crumb rubber waste tyres water absorption workability
ISBN:	3036594027, 9783036594026, 3036594035, 9783036594033
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Shrnutí:	The effects of additives on the flow characteristics of drilling muds used in various drilling operations, including oil and gas wells, must be better quantified. In this study, acrylamide polymer was used to modify water-based bentonite mud to reduce the yield point and maximum shear stress produced by the mud during the drilling operation. The bentonite content in the drilling mud was varied up to 6% (by weight). Based on the X-ray diffraction (XRD) analyses, the major constituents of bentonite were montmorillonite (MMT, (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2·nH2O), feldspar (Albite, NaAlSi3O8), kaolinite (Al2Si2O5(OH4)), Beidellite ((Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2·nH2O) and quartz (SiO2). Bentonite was modified using a water-soluble polymer solution before being used in the drilling mud. The rheological properties of bentonite were characterized from a very low strain rate to a relatively high strain rate to determine the nonlinear behavior of the shear-thinning drilling mud. The polymer modification reduced the yield point by 26–66% based on the bentonite content in the drilling mud.
ISBN:	3036594027 9783036594026 3036594035 9783036594033
DOI:	10.3390/books978-3-0365-9402-6