Optimum lime content of fly ash with salt

2003 ◽  
Vol 7 (4) ◽  
pp. 187-191 ◽  
Author(s):  
B. S. Narendra ◽  
P. V. Sivapullaiah ◽  
H. N. Ramesh
Keyword(s):  
Fly Ash ◽  
Lime Content

Effect of free lime content on properties of cement–fly ash mixtures

2013 ◽  
Vol 38 ◽  
pp. 829-836 ◽  
Author(s):  
Krittiya Kaewmanee ◽  
Pitisan Krammart ◽  
Taweechai Sumranwanich ◽  
Pongsak Choktaweekarn ◽  
Somnuk Tangtermsirikul
Keyword(s):  
Fly Ash ◽  
Free Lime ◽  
Lime Content

Effect and limitation of free lime content in cement-fly ash mixtures

2016 ◽  
Vol 102 ◽  
pp. 515-530 ◽  
Author(s):  
Adnan Nawaz ◽  
Parnthep Julnipitawong ◽  
Pitisan Krammart ◽  
Somnuk Tangtermsirikul
Keyword(s):  
Fly Ash ◽  
Free Lime ◽  
Lime Content

Optimization of Lime Content for Fly Ash

1995 ◽  
Vol 23 (3) ◽  
pp. 222 ◽  
Author(s):  
DR Petersen ◽  
RE Link ◽  
PV Sivapullaiah ◽  
JP Prashanth ◽  
A Sridharan
Keyword(s):  
Fly Ash ◽  
Lime Content

Technical Note on the Determination of Free Lime (CaO) in Fly Ash

1984 ◽  
Vol 43 ◽  
Author(s):  
Scott Schlorholtz ◽  
Turgut Demirel
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Recent Work ◽  
Technical Note ◽  
Fly Ashes ◽  
Major Drawback ◽  
Free Lime ◽  
Chemical Test ◽  
Lime Content

AbstractMany fly ashes contain free lime (CaO) and periclase (MgO) [1,2]. These two compounds, when present in excessive amounts, are known to cause soundness problems in portland cement [3,4]. Recent work [5] has indicated that the autoclave expansion of portland cement-fly ash pastes is related to the concentration of CaO and MgO in a given paste, free lime typically being more detrimental than periclase. The purpose of this technical note is to briefly discuss two methods that are currently available for determining the free lime content of fly ash, and to suggest a supplement to the autoclave test (described in ASTM C 151). The major drawback of the autoclave test is that it requires approximately two days to complete and therefore it would be helpful to have a quick chemical test that could be used to indicate the soundness properties of a given fly ash.

Utilization of Blast Furnace Slag, Steel Slag in the Production of Clinker

2013 ◽  
Vol 743-744 ◽  
pp. 334-338
Author(s):  
Shou Wan Qin ◽  
Jian Jun Shen ◽  
Hui Fen Wang ◽  
Zhao Ran Xiao
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Raw Materials ◽  
Steel Slag ◽  
Cement Clinker ◽  
Petrographic Analysis ◽  
Free Lime ◽  
Lime Content ◽  
Furnace Slag

The study on the use of blast furnace slag, steel slag and fly ash as raw materials to produce cement clinker has been carried out in the present investigation. The burnability of raw meal was determined by the linear shrinkage and free lime content of clinkers sintered at different temperatures. The microstructrue and properties of raw meal and clinker were investigated by the means of chemical analysis, X-ray diffraction and petrographic analysis. The physical and mechanical performance of cement was tested according to the standards. The results showed that the burnability was good as the free lime content was lower than 0.5w% in the clinker sintered at 1350. It is believed that the nucleation of alite only needs to grow bigger and rearrange with the rising temperature. The micrograph of clinker sintered at 1450 showed that there were some garlands of belite crystals around alite crystals because of high temperature or the local reducing atmosphere caused by the compact raw meal. High-quality cement clinker with compressive strength of 60.4MPa was produced by utilizing limestone, blast furnace slag, steel slag and fly ash as raw materials after curing 28 days.

scholarly journals Pozzolanic benefit of fly ash and steel slag blends in the development of uniaxial compressive strength of lime stabilized soil

2018 ◽  
Vol 28 (49) ◽  
pp. 7-21
Author(s):  
Jijo James ◽  
Ebenezer Paul Billy Graham David ◽  
Mahalakshmi Nagarathinam ◽  
Mohan Kumar Thaniyarasu ◽  
Jayapal Madhu
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Solid Waste ◽  
Steel Slag ◽  
Total Solid ◽  
Industrial Wastes ◽  
Optimal Dosage ◽  
Lime Stabilization ◽  
Lime Content ◽  
The Difference

This investigation involved the examination of pozzolanic benefits that resulted from the amendment of lime stabilization of a soil by using a combination of two industrial wastes viz. Fly ash (FA) and Steel Slag (SS). Two lime contents (6% and 8%), which represented the control specimens, were selected for stabilizing the soil, one above the Initial Consumption of Lime (ICL) and the other above the Optimum Lime Content (OLC), respectively. The lime to total solid waste ratio was maintained as 1:1, and the FA/SS ratio varied within the total solid waste content adopted for amending lime stabilization. The unconfined compressive strength (UCS) of the stabilized samples were determined by casting UCS specimens of 38 x 76 mm and cured for 2 hours, 7, 14 and 28 days. After curing, the specimens were strained until failure, to study the pozzolanic benefits of adding FA-SS. The results revealed that the addition of FA and SS improved the pozzolanic strength, ranging from 3.5% to 15%. The optimal dosage of FA and SS also varied with the lime content adopted. For the 6% lime content, a FA/SS ratio of 1:1 was found to be optimal, whereas for the 8% lime content, a FA/SS ratio of 3:1 was found to develop the maximum strength. The amendment of lime stabilization with FA/SS clearly brought about the difference in lime stabilization stages, unseen when only lime was adopted as stabilizer.

Characterization of lead-bearing phases in municipal waste combustor fly ash

1996 ◽  
Vol 54 ◽  
pp. 516-517
Author(s):  
L. L. Sutter ◽  
G. R. Dewey ◽  
J. F. Sandell
Keyword(s):  
Fly Ash ◽  
Bottom Ash ◽  
Municipal Waste ◽  
Primary Concern ◽  
Leaching Behavior ◽  
Waste Combustion ◽  
Lead And Cadmium ◽  
Lead Speciation ◽  
Accepted Practice

Municipal waste combustion typically involves both energy recovery as well as volume reduction of municipal solid waste prior to landfilling. However, due to environmental concerns, municipal waste combustion (MWC) has not been a widely accepted practice. A primary concern is the leaching behavior of MWC ash when it is stored in a landfill. The ash consists of a finely divided fly ash fraction (10% by volume) and a coarser bottom ash (90% by volume). Typically, MWC fly ash fails tests used to evaluate leaching behavior due to high amounts of soluble lead and cadmium species. The focus of this study was to identify specific lead bearing phases in MWC fly ash. Detailed information regarding lead speciation is necessary to completely understand the leaching behavior of MWC ash.

INFLAMMATION, CHEMOKINE EXPRESSION, AND DEATH IN MONOCROTALINE-TREATED RATS FOLLOWING FUEL OIL FLY ASH INHALATION

1997 ◽  
Vol 9 (6) ◽  
pp. 541-565 ◽  
Author(s):  
Cheryl R. Killingsworth ◽  
Francesca Alessandrini ◽  
G. G. Krishna Murthy ◽  
Paul J. Catalano ◽  
Joseph D. Paulauskis ◽  
...  
Keyword(s):  
Fly Ash ◽  
Fuel Oil ◽  
Chemokine Expression ◽  
Oil Fly Ash
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