working with metakaolin and slag has stressed that the slag reacted more slowly than the alite and thus strength development of slag was slow and that the strengthening effect of slag to the compressive strength of portland cement will be seen after the concrete was cast for a long time, for example, after 91 days. The same effect is Table 12.
Limestone addition slightly decreased the cold crushing strength of the acid pellets and increased the fines formation in the hematite to magnetite reduction stage in the LTD test. However, the CCS and the LTD values for the fluxed pellets are estimated to be high enough for blast furnace use. 17.06.2014 20
Dec 11, 2018 This study investigates the effect of desulfurization slag (DS) and gypsum (G) on the compressive strength and microstructure properties of blast furnace slag-(BFS-) based alkali-activated systems. DS is produced in a Kambara reactor process of molten iron produced in a steel production process. DS contains CaO, SiO 2 , Fe 2 O 3/sub, and SOsub3/sub and is
This paper presents the effect of slag addition on strength development and workability of fly ash/slag based geopolymer (FASLG) concrete cured at normal temperature. Class C fly ash with high ferrite (Fe) content was used as the primary material. The proportions of fly ash (FA) to slag (SL) are 1 FA 0 SL, 0.9 FA 0.1 SL, 0.7 FA 0.3 SL, and 0.5 FA 0.5 SL.
In order to study the effect of kaolinite and pozzolan addition on the compressive strength of inorganic polymers, 5% w/w of each material was added in the initial mixture and the resulting products were heated at 40, 60 and 80 oC for 24 or 48 hours. Figure 1 shows the evolution of the compressive strength vs. temperature and heating time.
revealed that, addition of steel slag up to 40% increases the split tensile strength. From 50% of steel slag addition the tensile strength decreases. Fig. 3 Average split tensile strength of specimens with and without steel slag cured in water for 7 days and 28 days 3) The Effect of Both Steel Slag and Dismantle Aggregate on the Strength of ...
STRENGTH OF CONCRETE effects of aqueous solution of dieldrex-20 on and crushing value of 26 per cent. Fine Get Price This page is about effects of slag addition on the crushing strength of concrete substances that have harmful effects on the Concrete Crushing Get Price Environmental impact of concrete is complex.
The addition of copper slag has improved the compressive strength, split tensile strength and flexural strength of concrete. The results also revealed that addition of the slag in concrete increases the density of about 10 to 20% thereby the selfweight of the concrete. The slump value of copper slag concrete lies between 75 to 100 mm.
In addition, steel slag has three characteristics the first ... using crushing magnetic separation screening process to recover the metal iron contained in steel slag, and then smelting. For example, the amount of steel scrap in steel slag recovered by dielectric self- ... the early strength of steel slag cement is low, and the presence of f ...
compressive strength of concrete increases with increasing amount of copper slag when superplasticizer is not applied 21. 2.3. Coarse Aggregates As compared to NSC, the mineralogy and the crushing strength of coarse aggregates has a significant effect on the strength of a HSC mix.
Phosphorus slag (PS) and limestone (LS) composite (PLC) were prepared with a mass ratio of 11. The effects of the content of PLC and the water/binder ratio on the mechanical properties, durability and dry shrinkage of concrete were studied via compressive strength, electric flux, sulfate dry/wet cycle method, saturated drainage method, isothermal calorimeter, adiabatic temperature rise ...
May 29, 2020 25% addition of copper slag as fine aggregate in concrete gives more strength compare to 30% addition of copper slag as fine aggregate in concrete. REFERENCES. Khanzadi M, Behnood A. Mechanical properties of high-strength concrete incorporating copper slag as coarse aggregate, Construction Build Mater Vol. 23, Issue 6, Jun. 2009, pp. 2183-2188.
2.4. Iron slag Iron slag is screened to remove the oversized particle and material passing through 4.75 mm sieve was used in manufacturing of concrete. The major chemical compounds in iron slag are. Iron slag is brittle and lighter than river sand. River sand and iron slag were dried in oven at 100 0C for 24 h and then cooled down to room ...
To study the effect of using copper slag as partial replacement of fine aggregate for the preparation of Bituminous concrete mix by Marshall method of mix design. To study effect of Copper slag on Marshall properties, Indirect Tensile Strength (ITS), and Tensile strength ratio (TSR) of Bituminous concrete mix.
Dec 16, 2016 Properties for chemical stress. Chemical composition The chemical composition of refractories is of great importance with respect to attack by liquid slags, flue dusts, glass melts and vapours. Based on the behaviour during contact reactions, the refractories can be categorized as (i) acid refractories (silica, silicon carbide, zircon cristobalite, and zircon silicate etc.), (ii) basic ...
The results showed that the addition of proper amounts of COS, FA and BS has positive effects on the strength and durability of marine concrete, but excessive COS may have negative effects. Hence, the combined addition of COS, FA and BS up to a certain optimum COS content is a promising way of producing a higher performance and greener marine ...
Enhancing microstructure and durability of concrete from ground ... The compressive strength and durability including carbonation resistance, chloride ... The experimental results show that GGBS and MK have positive impact on pore ... Mineral admixtures were ground granulated blast furnace slag ( relative density ... In addition, polycarboxylates superplasticizer (density 1.08 g/ mL, solid ...
Jan 08, 2013 The soil is A-7-6(5) according to AASHTO classification systems. 5%, 8% and 10% steel slag content (SSC) each by dry weight of soil, was used to stabilize the soil while evaluating the specific gravity, consistency limits, compaction, permeability, uncured and cured strength of the soil.
effects of slag addition on the crushing strength of concrete block. Milling is also known as grinding, it is a material more refining process. A sharp object works by concentrating forces which creates a high pressure due to the very ...
Jun 23, 2017 The softening and melting temperatures of slag were adjusted by changing the slag basicity and FeO content. A proper amount of Fe 2 O 3 or SiO 2 addition increased the crushing strength of DRI due to the softening of slag. Excessive Fe 2 O 3 or SiO 2 resulted in the melting of slag, which decreases crushing strength.
KEYWORDS 3D concrete printing, Geopolymer, Rheology, Bond strength and Additive Manufacturing EFFECTS OF SLAG ADDITION ON BOND STRENGTH OF 3D PRINTED GEOPOLYMER MORTAR AN EXPERIMENTAL INVESTIGATION 3$1$ BIRANCHI Singapore Centre for 3D Printing, School of Mechanical Aerospace Engineering Nanyang Technological University, Singapore
EFFECT OF MAGNESIA ADDITION ON PHYSICAL PROPERTIES AND SLAG A TTACK RESIST ANCE OF ULTRA-LOW ... On the other hand, 5 wt% MgO had a positive effect on Cold Crushing Strength (CCS) of the castable. ...
Strength Durability. Concrete made with slag cement provides higher compressive and flexural strengths compared with portland cement concrete. SCIC 14, Compressive and Flexural Strength, examines the factors that effect concrete strength, and explains how slag cement improves both compressive and flexural strength of concrete.
results showed that the addition of proper amounts of COS, FA and BS has positive effects on the strength and durability of marine concrete, but excessive COS may have negative effects. Hence, the combined addition of COS, FA and BS up to a certain optimum COS content is a promising way of producing a higher performance and greener marine concrete.
Mar 01, 2017 Nano alumina addition promotes the densification of MgO-C refractory to 6 wt % and progresses cold crushing strength due to the formation of MgAL 2 O 4, Al N, and Al 4 C 3 phases. For the purpose of improvement the oxidation resistance of the MgO-C refractory the addition of alumina could be effectively decreased by nano-technology.
Fig.1 shows the effect of nano-Ni addition on the slag corrosion resistance of specimens. It revealed that with the increasing the amount of nano-nickel content in MgO-C refractory brick, the depth of slag penetration decreased. Also, the amount of slag penetration decreasing is more for
Jun 01, 2014 Ferrochrome slag is a non-plastic material and absence of cement binder causes deficiency in hydrated phase formation which could be considered a major cause of strength degradation. Even the presence of microsilica and increased compactness owing to it could not make up for this deficiency.
The effect of diboron trioxide (B 2 O 3 ) on the crushing strength and smelting mechanism of high-chromium vanadium-titanium magnetite pellets was investigated in this work. The main characterization methods were X-ray fluorescence, inductively coupled plasma-atomic emission spectroscopy, mercury injection porosimetry, X-ray diffraction, metallographic microscopy, and
In this paper, the addition amount of iron ore powder (10%, 20%, 30%, 40%, 50%) were used to reveal the effect of iron power amount on the crushing strength of ferro-coke. Then four types of binders (phenolic resin, silicon metal powder, corn starch, and coal tar pitch) were added into the coal to test their effect on the cold and hot crushing ...
Implementation of industrial waste ferrochrome slag in conventional and low cement castables Effect of microsilica addition 7 Pages Journal of Asian Ceramic Societies, 2014
Jan 08, 2019 The results showed that the addition of proper amounts of COS, FA and BS has positive effects on the strength and durability of marine concrete, but excessive COS may have negative effects. Hence, the combined addition of COS, FA and BS up to a certain optimum COS content is a promising way of producing a higher performance and greener marine ...
with target mean strength 39.9 MPa and it is cast and tested. Cubes, cylinders and prisms are cast to determine the compressive strength, spilt tensile strength and flexural strength respectively with natural aggregate as well as with the increasing percentage of the slag to verify the effect of addition of slag.
Effect of Foundry Slag as Substitute in the ... slag cement indicated that substitution could be done to about 40 % slag addition at which 0.0158 KN/mm2 (18 %) compressive strength was obtained as compared with 0.0152 KN/mm2 (17 %) compressive ... of the local foundry slag before crushing, grinding and pulverizing. It also involves the