Improving performance of recycled aggregate concrete with
· Phosphorous slag (PHS) ground granulated blast-furnace slag (GGBS) and fly ash (FA) were used as replacements of Portland cement to modify the microstructure of recycled aggregate concrete (RAC). A new manufacturing method named "W3T4" was proposed to improve the performances of interfacial transition zone (ITZ) between recycled aggregate and mortar.
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Effects of Hydrophobic Expanded Silicate Aggregates on
· lightweight aggregate concrete. Three mixes with density classes of D1.4 D1.2 and D1.0 according to EN 196-1 (BSI 2005) were designed. A quaternary binder consisting of blast furnace slag ce-ment class F fly ash and limestone powder was studied and used in this research and microstructure mechanical properties work-
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Effects of Ground Granulated Blast Furnace Slag in
· Effects of Ground Granulated Blast Furnace Slag in Portland Cement ConcreteExpanded Study quantitatively investigated the deicer scaling resistance of grade 120 slag cement concrete two types of coarse aggregate and slag cement replacement levels of 0 30 and 50 for a
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Effect of Dry–Wet and Freeze–Thaw Repeated Cycles on
· It may be because the strong alkaline chemical properties and the unique sac-like microstructure of the steel slag enable the asphalt to wrap tightly the steel slag providing a strong "anchoring" effect on the interface phase and thus effectively enhancing the capacity of water resistance.
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Effects of Environment in the Microstructure and
· Effects of Environment in the Microstructure and Properties of Sustainable Mortars with Fly Ash and Slag after a 5-Year Exposure Period José Marcos Ortega ID Rosa María Tremiño Isidro Sánchez ID and Miguel Ángel Climent ID Departamento de Ingeniería Civil Universidad de Alicante Ap. Correos 99 03080 Alicante Spain
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Durability Properties and Microstructure of Ground
· Ground granulated blast-furnace slag (GGBS) is a green construction material used to produce durable concrete. The secondary pozzolanic reactions can result in reduced pore connectivity therefore replacing partial amount of Portland cement (PC) with GGBS can significantly reduce the risk of sulfate attack alkali–silica reactions and chloride penetration.
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Investigating the Effects of Copper Slag and Silica Fume
· Najimi et al. emphasized the effectiveness of copper slag replacement in improving the concrete resistance against sulfate attack which is a key factor in durability. Wang et al. ( 2017 ) also declared that using 25 fly ash and 5–8 silica fume as the replacement for cement led to significant improvements in the resistance of concrete against combined freezing–thawing and sulfate attack.
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Effects of Moisture on Surface Chemistry of Steel Slags
ered weathering reactions on aggregate surfaces and their effects on skid resistance but uriforti.mateiy there is no detailed follow-up to this wotk. There appears to have been little other work on the surface chemistry of steel slags (7). Some research was performed to evaluate the degree of asphalt
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Effects of Hydrophobic Expanded Silicate Aggregates on
· lightweight aggregate concrete. Three mixes with density classes of D1.4 D1.2 and D1.0 according to EN 196-1 (BSI 2005) were designed. A quaternary binder consisting of blast furnace slag ce-ment class F fly ash and limestone powder was studied and used in this research and microstructure mechanical properties work-
Get Price
Influence of Macrotexture and Microtexture on the Skid
This article intends to study the influence of macrotexture and microtexture on the skid resistance of four types of aggregates. For this purpose fractal dimension ( D ) root mean square height ( R q ) and Polished Stone Value (PSV) were tested. The Pearson correlation coefficients between PSV and D or R q in the interval of different polishing cycles were calculated and analyzed with
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Effects of Moisture on Surface Chemistry of Steel Slags
ered weathering reactions on aggregate surfaces and their effects on skid resistance but uriforti.mateiy there is no detailed follow-up to this wotk. There appears to have been little other work on the surface chemistry of steel slags (7). Some research was performed to evaluate the degree of asphalt
Get Price
Experimental Testing and Finite-Element Modeling to
This study evaluates the effects of aggregate angularity in bituminous mixtures. Previous studies have predominantly focused on the effects of aggregate angularity on the resistance to permanent deformation while little work has investigated the role of aggregate angularity related to mixture volumetrics and fatigue fracture performance.
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Behavior of Hot-Mix Asphalt Containing Blast Furnace Slag
Significant amounts of blast furnace slag (BFS) are generated daily as by-product from iron and steel industries. This waste material usually has interesting physical properties and mineralogical and chemical composition which can be useful as granular aggregate in the production of hot mix asphalt (HMA).
Get PriceMechanical Properties and Sulfate Resistance of High
· up to 45 (by weight). In addition the natural fine aggregate was replaced with air-cooled blast furnace slag aggregate (here referred to as "slag aggregate") at a level of 50 and 100 (by weight). Polypropylene fiber was also added at a dosage of 0.25 of
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Corrosion Mechanisms of Different Refractory Aggregates in
· The silicon carbide aggregate exhibits the best slag resistance to the SiO 2-MgO based slag because the slag does not infiltrate the material. Therefore the silicon carbide aggregates show almost no corrosion when smelting SiO 2-MgO based slag. Mullite and tabular alumina aggregates also show good slag resistance by forming a dense alumina isolation layer and a magnesium-aluminum spinel
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Effects of bottom ash and granulated blast furnace slag as
· AbstractAbrasion resistance is one of the most important durability properties of concrete. Especially highway airport and industrial floor pavements should be resistant to abrasion. Recently many research studies have been carried out on the utilization of industrial by-products in concrete. Granulated blast-furnace slag (GBFS) and bottom ash (BA) are two of these by-products.
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The Evaluation of Damage Effects on MgO Added Concrete
· The addition of MgO and replacement by slag cement greatly improves the concrete systems resistance to deicers and chloride penetration. This could be due to the combined effects of already well documented benefits of slag cement and the effects of MgO when added to systems with slag
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Effects of bottom ash and granulated blast furnace slag as
· AbstractAbrasion resistance is one of the most important durability properties of concrete. Especially highway airport and industrial floor pavements should be resistant to abrasion. Recently many research studies have been carried out on the utilization of industrial by-products in concrete. Granulated blast-furnace slag (GBFS) and bottom ash (BA) are two of these by-products.
Get Price
Effects of Steel Slag on Mechanical Properties and
· In order to study the effects of steel slag on the mechanical properties and microstructure of geopolymers the compressive strength and flexural strength of a fly-ash steel slag–based geopolymer paste/mortar have been explored. Linear analysis of strength of fly-ash steel slag–based geopolymeric mortar with steel slag content was studied.
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Effects of Ground Granulated Blast Furnace Slag in
· Effects of Ground Granulated Blast Furnace Slag in Portland Cement ConcreteExpanded Study quantitatively investigated the deicer scaling resistance of grade 120 slag cement concrete two types of coarse aggregate and slag cement replacement levels of 0 30 and 50 for a
Get Price
Effects of Environment in the Microstructure and
· Effects of Environment in the Microstructure and Properties of Sustainable Mortars with Fly Ash and Slag after a 5-Year Exposure Period José Marcos Ortega ID Rosa María Tremiño Isidro Sánchez ID and Miguel Ángel Climent ID Departamento de Ingeniería Civil Universidad de Alicante Ap. Correos 99 03080 Alicante Spain
Get Price
Durability Properties and Microstructure of Ground
· Ground granulated blast-furnace slag (GGBS) is a green construction material used to produce durable concrete. The secondary pozzolanic reactions can result in reduced pore connectivity therefore replacing partial amount of Portland cement (PC) with GGBS can significantly reduce the risk of sulfate attack alkali–silica reactions and chloride penetration.
Get Price
Influence of Macrotexture and Microtexture on the Skid
This article intends to study the influence of macrotexture and microtexture on the skid resistance of four types of aggregates. For this purpose fractal dimension ( D ) root mean square height ( R q ) and Polished Stone Value (PSV) were tested. The Pearson correlation coefficients between PSV and D or R q in the interval of different polishing cycles were calculated and analyzed with
Get Price
The Evaluation of Damage Effects on MgO Added Concrete
· The addition of MgO and replacement by slag cement greatly improves the concrete systems resistance to deicers and chloride penetration. This could be due to the combined effects of already well documented benefits of slag cement and the effects of MgO when added to systems with slag
Get Price
Improving performance of recycled aggregate concrete with
· Phosphorous slag (PHS) ground granulated blast-furnace slag (GGBS) and fly ash (FA) were used as replacements of Portland cement to modify the microstructure of recycled aggregate concrete (RAC). A new manufacturing method named "W3T4" was proposed to improve the performances of interfacial transition zone (ITZ) between recycled aggregate and mortar.
Get Price
Influence of aggregate surface treatment on corrosion
· Effects of aggregate coating on the ITZ microstructure were tested and modelled. • Coating on aggregate could reduce the porostiy in ITZ ultimately inhibit the chloride ingression. • Silica fume coating can significantly reduce the porosity in ITZ. • Slag and silica fume coating could prolong the initiation corrosion time of reinforcement.
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Durability Properties and Microstructure of Ground
· Ground granulated blast-furnace slag (GGBS) is a green construction material used to produce durable concrete. The secondary pozzolanic reactions can result in reduced pore connectivity therefore replacing partial amount of Portland cement (PC) with GGBS can significantly reduce the risk of sulfate attack alkali–silica reactions and chloride penetration.
Get Price
Influence of Macrotexture and Microtexture on the Skid
This article intends to study the influence of macrotexture and microtexture on the skid resistance of four types of aggregates. For this purpose fractal dimension ( D ) root mean square height ( R q ) and Polished Stone Value (PSV) were tested. The Pearson correlation coefficients between PSV and D or R q in the interval of different polishing cycles were calculated and analyzed with
Get Price
Effects of Hydrophobic Expanded Silicate Aggregates on
· lightweight aggregate concrete. Three mixes with density classes of D1.4 D1.2 and D1.0 according to EN 196-1 (BSI 2005) were designed. A quaternary binder consisting of blast furnace slag ce-ment class F fly ash and limestone powder was studied and used in this research and microstructure mechanical properties work-
Get Price
Aggregate Effects on the Thermal Shock Resistance of
Aggregate Effects on the Thermal Shock Resistance of Spinel-Forming Refractory Castables M.A.L. Braulio G.B. Cintra Y.W. Li V.C. Pandolfelli The performance of spinel forming refractory castables is mainly re-lated to their slag corrosion and thermal shock behaviors. Concern-ing the thermal shock resistance the aggregate selection is an im-
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