Absorption characteristics of air-cooled blast-furnace slag under pressure varied depending on its porosity and pore size distribution. Field studies were conducted on the pumpability of blast-furnace slag aggregate concretes.
The results indicate that the slag content and the water to binder ratio are the dominant factors affecting chloride penetration and corrosion initiation time of steel bars in AAFS concretes due to their greater contributions to reduce the porosity, while the aggregate volume fraction presents a limited effect compared with other factors.
Geopolymers are emerging construction materials with lower carbon dioxide emissions compared to the conventional cementitious materials. In this paper, an experimental investigation on the strength, durability and microstructural characteristics of GC blended with fly ash (FA), ground granulated blast furnace slag (GGBFS) and …
Factors that Impact Pumpability. A wide array of factors can impact concrete pumpability, Bui notes, such as the dimension, shape, gradation, and volume of aggregates. Supplementary materials like fly …
Using Slag to Enhance Concrete Performance. BY ANNE BALOGH. Added in the right proportions, groundgranulated blast-furnace slag can improve many properties of both …
slag cement effect on set time of ncrete; Slag Cement Production. Hardened concrete containing slag cement may show mottled green or bluegreen areas a few days after placement, symptoms of a temporary condition known as "greening" SCIC #10, Greening, explains why the phenomenon happens, and explains that greening has no effect on the …
In this study, the effect of natural pozzolan in different grades of cement on the mechanical properties and permeability of concrete at 7 and 28 days of age is investigated.
1st International RILEM Conference on Rheology and Processing of Construction Materials, Paris, 2 –4 September, 2013 Experimental Study on Pumpability of Concrete using Sliding Pipe Rheometer ...
Semantic Scholar extracted view of "Effects of modifying agent on rheology and workability of alkali-activated slag paste for 3D extrusion forming" by Xue-sen Lv et al.
While ground granulated blast furnace slag may slightly improve pumpability, excessive use can lead to concrete segregation and delayed setting time. 1.4 Metakaolin Metakaolin does not have a pronounced effect on pumpability but …
but the improvem ent effect of AEW co ncrete was relati vely reduced ... pumpability [17], the strength ... Cement-slag concrete has become one of the most widely used building materials ...
By the addition of superplasticizer and air entraining agent, manufactured sand self-compacting concrete (MS SCC) with slump flow varying from 500 to 700 mm and air content varying from 2.0% to 9.0% were prepared and the pumpability of MS SCC was studied by a sliding pipe rheometer (Sliper). According to the Kaplan's model, the initial …
However, the contradicting requirements in extrusion for pumpability and buildability are intensified compared to normal concrete due to the change of LAC fresh properties during pumping. This paper focusses on the effect of cement type and amount of limestone powder on the pumpability of LAC at comparable buildability.
Research has shown that steel slag cement concrete has superior durability than concrete using crushed limestone aggregate. In steel-making, the process of …
2/7/2022 6 Aggregate Grading The aggregate gradation and content can impact several properties of a concrete mix: Finishability, workability, pumpability, strength, permeability, and
The concrete mix with an addition of appropriate chemical admixtures often improves its plastic properties such as workability, pumpability, cohesion and adhesion.
In alkali-activated slag/pumice (AASP) mortars, ground granulated blast-furnace slag (GGBFS) could be replaced partially with Volcanic pumice powder (VPP) as a natural pozzolan; however, its performance in alkali-activated slag/pumice (AASP) mortars against mineral acid environments are currently missing in the literature.
The chemically activated steel slag powder could improve compressive strengths, resistance to chloride permeation and water permeation, as well as …
Using supplementary cementitious materials in concrete attracted significant attention worldwide due to environmental benefits and the potential for enhancing …
The effects of constituents of fresh concrete, including cement, supplementary cementitious materials (fly ash, ground blast furnace slag, and silica fume), limestone powder, coarse and fine aggregates, and chemical admixtures (superplasticizer, viscosity modifying agent and air-entraining agent) on the rheological properties are …
This master thesis presents the effects of fly ash on the properties of alkali activated slag concrete, commonly referred as Geopolymer concrete (GPC).
Semantic Scholar extracted view of "CONSIDERATION IN PUMPABILITY OF CONCRETE OF VISCOSITY USING PORTLAND BLAST-FURNANCE SLAG CEMENT" by Y. Nakata et al.
The use of concrete incorporating slag is necessary due to global environmental concerns, but the decrease in concrete durability caused by environments rich in chloride ions requires more advanced concrete mix designs, especially in coastal areas. The aim of this study was thus to assess the influence of slag addition on the …
An experimental analysis was conducted to study the effects of using copper slag as a fine aggregate (FA) and the effect of fly ash as partial replacement of cement on the properties high strength ...
Optimizing Concrete Pavement Mixes with Slag Cement. Feb 08, 2015 Effects of Slag Cement on Concrete Properties Plastic Properties Setting Time Heat of Hydration Color Strength Effects on Setting Time 0 2 4 6 8 10 12 Initial Set,hr 50F (10C) 73F (23C) 92F (33C) WCPA Annual Concrete Pavement Workshop Bruce Figure 2 Effect of Various …
Flexural Strength of co ncrete is increased co mpared to conventional concrete. ... a study on properties and effects of copper slag in concrete' International journal of civil and structural ...
Semantic Scholar extracted view of "Rheology and pumpability of mix suitable for extrusion-based concrete 3D – A review" by Spandana Paritala et al.
This report focuses on an experiment conducted on viscosity agent mixed concrete for determining the pumpability of it using portland blast-furnance slag cement.
The freeze–thaw splitting strength ratio and residual stability of steel slag AC-13C and SMA-13 asphalt mixtures exceed the specified requirements, with AC-13C …
mixes used for highway projects due to the effects influenced by shape, surface & content of micro fines of quarry dust. In this study, the cement quarry dust ratios were optimized to obtain the optimum strength, workability & to use …
Conceptual diagram illustrating the effects of slag and biochar amendments on the formation and stability of soil aggregates (1) and on the soil organic-carbon fraction and microorganisms (2) during a flooding period …
This work investigates the role of alumina content in the slag and presence of limestone in composite cement on the hydration and compressive strength evolution of composite cement.
The cost of SF co ncrete ... and fine aggregate can be substituted partially with steel slag ... The present study will describe the characteristics and the effects of concrete properties when ...
In this paper, the influence of steel slag on the compressive strength, drying shrinkage, permeability to chloride, and carbonation resistance of concrete was investigated under two different conditions: constant W/B and constant 28 days' …
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