scholarly journals Wet and Dry Process for Manufacturing of Portland Cement Por with Chemical Compounds

2019 ◽  
pp. 01-06
Author(s):  
Mr. Shruti Timande
Keyword(s):  
Portland Cement ◽  
Chemical Reaction ◽  
Chemical Compounds ◽  
Dry Process ◽  
Wet Ground ◽  
Reaction With Water

Portland is hydraulic make by finely pummeling the clinker produced by calcining to incipient combination a mix of argillaceous and in like manner calcareous supplies. It experiences a chemical reaction with water units and solidifies when engaged with air or moreover underwater  In this paper we are talking about two diverse procedure to manufacture cement that are wet procedure and dry procedure. Wet procedure minerals are wet ground by including water  to shape a slurry and afterward dried. Dry procedure minerals are dry ground to shape a powder like substance.

scholarly journals Comparison of Wet Process and Dry Process of Cement Manufacturing with Advantages and Disadvantages

2020 ◽  
pp. 01-06
Author(s):  
Ms. Elena Rosemaro
Keyword(s):  
Portland Cement ◽  
Dry Process ◽  
Wet Process ◽  
Advantages And Disadvantages ◽  
Cement Manufacture ◽  
Wet Ground ◽  
Cement Manufacturing

In this paper we are discussing wet and dry process of Portland cement manufacture. Wet process minerals are wet ground to form a slurry and in dry process minerals are dry ground to form a powder like substance. In this paper, we are discussing the comparison between wet process and dry process with various advantages and disadvantages.

Low Cement/High Fly Ash Concretes: Their Properties and Response to Chemical Admixtures

1987 ◽  
Vol 113 ◽  
Author(s):  
V. H. Dodson
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Calcium Hydroxide ◽  
Pozzolanic Reaction ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Fly Ashes ◽  
Chemical Admixtures ◽  
Reaction With Water

ABSTRACTIn practice, the amount of fly ash added to portland cement concrete varies depending upon the desired end properties of the concrete. Generally, when a given portland cement concrete is redesigned to include fly ash, between 10 and 50% of the cement is replaced by a volume of fly ash equal to that of the cement. Sometimes as much as twice the volume of the cement replaced, although 45.4 kg (100 lbs) of cement will only produce enough calcium hydroxide during its reaction with water to react with about 9 kg (20 lbs) of a typical fly ash. The combination of large amounts of certain fly ashes with small amounts of portland cement in concrete has been found to produce surprisingly high compressive strengths, which cannot be accounted for by the conventional “pozzolanic reaction”. Ratios of cement to fly ash as high as 1:15 by weight can produce compressive strengths of 20.7 MPa (3,000 psi) at I day and over 41.4 MPa (6,000 psi) at 28 days. Methods of identifying these “hyperactive” fly ashes along with some of the startling results, with and without chemical admixtures are described.

scholarly journals ANALYSIS OF PROPERTIES OF CONCRETE USING SEA SHELLS CRUSHEDPOWDER AS ADMIXTURE

2017 ◽  
Vol 5 (11) ◽  
pp. 374-378
Author(s):  
Vishal Gadgihalli ◽  
Meena ◽  
Lohit ◽  
Raghavendra Prasad HavanjeDinakar ◽  
Babitha Rani
Keyword(s):  
Compressive Strength ◽  
Calcium Carbonate ◽  
Portland Cement ◽  
Chemical Reaction ◽  
Paper Analysis ◽  
Exothermal Reaction ◽  
Reduction Time ◽  
Living Things ◽  
Chemical Admixture ◽  
Physical And Chemical

The tremendous increment of demand on concrete made admixture one of major component. As admixtures help in enhancement of concrete physical and chemical admixture. In this paper analysis of sea shells as chemical admixture is studied and verified the strength of concrete and temperature emitted due to chemical reaction to the normal Portland cement. As sea shells contain calcium carbonate, CaCo3 as major composition, as calcium is one major component that helps in densifying and hardening of bones in all living things. The flexural and compressive strength has gradually increased; the transmission temperature and reduction time of exothermal reaction has reduced. Hence seashell acts as great admixture.

scholarly journals ANALYSIS OF PROPERTIES OF CONCRETE USING MANUFACTURE SAND AS FINE AGGRIGATES

2017 ◽  
Vol 5 (11) ◽  
pp. 338-342
Author(s):  
Vishal Gadgihalli ◽  
Ramya ◽  
Babitha Rani ◽  
Raghavendra Prasad HavanjeDinakar ◽  
Lohith
Keyword(s):  
Compressive Strength ◽  
Soil Erosion ◽  
Portland Cement ◽  
Cement Paste ◽  
Chemical Reaction ◽  
Paper Analysis ◽  
Exothermal Reaction ◽  
Normal Concrete ◽  
River Sand

Aggregate in concrete acts as structural filler, these place a crucial than simple statement implies it is the material that the cement paste coats and blind together. Now a day’s using river sand is prohibited by government, as these cause soil erosion. In this paper analysis of properties of concrete using manufacture sand as course aggregate is studied and verified the strength of concrete and temperature emitted due to chemical reaction to the normal Portland cement. Using manufacture sand as course aggregate the temperature emitted due to exothermal reaction of concrete has reduced. Although the compressive strength of the concrete has reduced compared to normal concrete where no admixtures were used to enhance the properties of concrete.

scholarly journals ANALYSIS OF PROPERTIES OF CONCRETE USING SAFETY MATCHES POWDER AS ADMIXTURE

2017 ◽  
Vol 5 (11) ◽  
pp. 53-56
Author(s):  
Vishal Gadgihalli ◽  
Meena Y.R ◽  
Bharath A.L ◽  
Raghavendra Prasad HavanjeDinakar
Keyword(s):  
Portland Cement ◽  
Chemical Reaction ◽  
Crucial Role ◽  
Paper Analysis ◽  
Exothermal Reaction

Recently admixtures had made a major importance in the concrete manufacturing. These admixtures materials ranged from blood in the history to the recent retarding agents. In this paper analysis of properties of concrete using safety matches powder as admixture is studied and verified the strength of concrete and temperature emitted due to chemical reaction to the normal Portland cement. Using safety matches powder the temperature emitted due to exothermal reaction of concrete has reduced. This gives better results hence we can use this safety matches powder as an admixture where the reacting temperature and the emitting temperature place a crucial role in construction and maintenance.

scholarly journals ANALYSIS OF PROPERTIES OF CONCRETE USING POTASSIUM POWDER AS ADMIXTURE

2017 ◽  
Vol 5 (4RASM) ◽  
pp. 41-45
Author(s):  
Vishal Gadgihalli ◽  
Ramya ◽  
Abrar Khan ◽  
Raghavendra Prasad Dinakar
Keyword(s):  
Portland Cement ◽  
Chemical Reaction ◽  
Crucial Role ◽  
Paper Analysis ◽  
Hardened Concrete ◽  
Exothermal Reaction ◽  
Chemical Admixtures ◽  
Concrete Operations ◽  
The Cost

Chemical admixtures are the ingredients in concrete other than Portland cement, water and aggregate those are added to mix immediately before or during mixing. These admixtures are primarily used to reduce the cost of concrete construction, to modify the properties of hardened concrete, to ensure the quality of concrete during mixing, transportation, placing curing and to overcome certain emergences during concrete operations. In this paper analysis of properties of concrete using potassium power as admixture is studied and verified the strength of concrete and temperature emitted due to chemical reaction to normal Portland cement. Using potassium powder the temperature emitted due to exothermal reaction of concrete has reduced. Thus gives better results hence we can use this potassium powder as an admixture where the temperature and the emitting temperatures place a crucial role in construction and maintenance.

scholarly journals EFFICIENCY OF PLASTICIZER EFFECT DEPENDING ON METHOD OF THEIR INTRODUCTION INTO CONCRETE

2021 ◽  
pp. 98-104
Author(s):  
A.P. Nikolaev ◽  
◽  
E.V. Kondrashchenko ◽  
Keyword(s):  
Portland Cement ◽  
Building Materials ◽  
Decisive Role ◽  
Cone Penetration ◽  
Dry Process ◽  
Adsorption Processes ◽  
And Behavior ◽  
And Control ◽  
Additional Reduction

Abstract. The article dwells on existing methods of plasticizing additive introduction into Portland cement-based concrete mortars. A review was performed of available works studying the reasons of different effect of pasticizers depending on the method of their introduction into concrete. It was supposed that different results in effectiveness of such additives may be connected to not only adsorption processes taking place on the surface of Portland cement aluminate and sulfate phases, but also to their concentration capillary redistribution mechanism within concrete structure. This assumption was experimentally tested using dispersed building materials deprived of calcium sulfates and aluminates. Dry process clinker-based cement consumption may be positively reduced at presence of a plasticizing additive provided it was wetted before that with mixing water. Such a result confirmed authors’ assumption that not only plasticizing agent, but cement as well may be spared in case of combined additive introduction method while maintaining the values of rheological and strength parameters of obtained products. An additional reduction in cement consumption per unit mass of products leads to a decrease in the "clinker-concrete intensity" parameter. This opportunity will contribute to the reduction of the greenhouse effect by reducing CO2 emissions into the atmosphere when firing Portland cement clincer. We concluded that our proposed decisive role of plasticizing additive redistribution capillary mechanism in cement paste intergrain air space enables, on a par with its adsorption counterpart, a more substantiated prediction of applied plasticizer efficiency depending on their properties, as well as on condition and pjase composition of applied binders and aggregates. Efficiency of cone penetration methods was demonstrated in analysis and control of Portland cement condition and behavior.

scholarly journals Evaluation of the reactivity of artificial mixtures of Portland cement clinker obtained by flame spray pyrolysis

2019 ◽  
Vol 16 (2) ◽  
pp. 110-117 ◽  
Author(s):  
Andrés Felipe Pinto ◽  
Jorge Iván Tobón ◽  
Natalia Betancur-Granados ◽  
Oscar Jaime Restrepo-Baena
Keyword(s):  
Portland Cement ◽  
Spray Pyrolysis ◽  
Cement Clinker ◽  
Flame Spray Pyrolysis ◽  
Mechanical Resistance ◽  
Flame Spray ◽  
X Ray Diffraction ◽  
Fundamental Properties ◽  
Portland Cement Clinker ◽  
Reaction With Water

The Portland cement clinker consists of 95% calcium oxide, silicon, aluminium and iron and 5% impurities of magnesium, sodium, potassium, titanium, sulfur, phosphorus and manganese. From the combination of two or more of the main oxides, the constituents of the white clinker are formed, corresponding to alite(3CaO.SiO2 or C3S), belite (2CaO.SiO2 or C2S) and celite (Ca3Al2O6 or C3A), which give cement its characteristic properties. The fundamental properties of cement are its mechanical resistance, chemical resistance, the speed of reaction with water and the heat given off in hydration. In this work, the reactivity of an artificial mixture of white clinker, formed from alite, belite and celite prepared by flame spray pyrolysis was evaluated. The phases were characterized by X-ray diffraction, scanning electron microscopy and microcalorimetry, to evaluate their formation and reactivity. The characterization showed that during the synthesis of belite, a greater amount of the polymorph alpha was produced, with some impurities. On the other hand, the synthesis of celite allowed the production of the polymorph CII. The reactivity was evaluated by microcalorimetry.

scholarly journals A Scientific analysis of Various forms of Chemical Compounds and their use

2018 ◽  
pp. 01-06
Author(s):  
Prof. Romi Morzelona
Keyword(s):  
Chemical Compounds ◽  
Scientific Analysis ◽  
Wet Ground

In this Research it is talked about that different procedure of Portland concrete assembling. Wet procedure minerals are wet ground to shape a slurry and in dry procedure minerals are dry ground to frame a powder like substance. In this paper, we are talking about the correlation between wet procedure and dry procedure with different favorable circumstances and drawbacks.

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