The crystallinity‚ morphology‚ structure‚ shape and molecule size of precipitated calcium carbonate were directly influenced by the stirring action during the carbonation process. As depicted in the Fig. 1‚ SEM images of nano CaCO3 precipitated at different stirring rate varied from 700‚ 800‚ 900‚ 1000‚ 1100 and 1200 rpm had shown significant differences in morphology structure influenced by agitation rate‚ respectively
Premium Chemistry Chemical reaction Temperature
Corrosion of reinforced concrete Contents 1. Introduction 3 2. Corrosion 3 2.1 Chloride attack 4 2.2 Carbonation 5 3. Minimising corrosion 6 3.1 Metallic coatings 6 3.2 Cathodic protection 7 3.3 Other solutions 8 4. Conclusion 8 References 10 List of Figures 2.1 Chloride attack on reinforced concrete…………………………………………....4 2.2 Carbonation attack of RC due to poor concrete cover…………………………….5 3.1 How impressed current cathodic protection stops corrosion ……………………
Premium Reinforced concrete Concrete Rebar
depends upon the rocks’ mineralogical composition‚ and the nature of chemical environment surrounding them. Some of the main processes of chemical weathering are: 1. solution‚ 2. hydration and hydrolysis‚ 3. oxidation and reduction‚ 4. carbonation‚ 5. base exchange‚ and 6. formation of colloids. 1. SOLUTION Some rocks contain one or more minerals that are soluble in water to some extent. Rock salt (NaCl)‚ gypsum (CaSO4. 2H2O) and calcite (CaCO3) As it is‚ pure water is not a good
Premium Mineral Carbon dioxide Sedimentary rock
It is well known that when you open a bottle of soda‚ most if not all the pressure inside the container is lost‚ as evidenced by the hissing sound. If a simple method of adding more carbon dioxide into the container were found‚ then the carbonation of a beverage could be preserved further. Some contemporary gadgets market themselves as having the capability to maintain pressure within carbonated beverage containers‚ but most of them simply add more oxygen molecules‚ not more carbon dioxide
Premium Oxygen Carbon dioxide Water
2.3 Magnesia-Doloma Refractories: The MgO-CaO system is remarkable for the high liquidus and solidus temperatures over the complete range 100% MgO- 100% CaO‚ as the eutectic for the CaO–MgO binary system occurs at 2370 ºC [3‚ 52]. MgO–CaO bricks are high-value refractories composed of lime (CaO) and periclase (MgO). MgO –CaO refractories has some advantageous and disadvantageous compared to MgO and CaO refractories (Table 1). Table 1 Typically‚ these refractories are composed by 50-80 wt. % of
Premium Oxygen Water Hydrogen
Coca-Cola is a carbonated soft drink sold in stores‚ restaurants‚ and vending machines throughout the world.[1] It is produced by The Coca-Cola Company of Atlanta‚ Georgia‚ and is often referred to simply as Coke (a registered trademark of The Coca-Cola Company in the United States since March 27‚ 1944). Originally intended as a patent medicine when it was invented in the late 19th century by John Pemberton‚ Coca-Cola was bought out by businessman Asa Griggs Candler‚ whose marketing tactics led Coke
Premium Coca-Cola Carbon dioxide
limestone contain calcium carbonate. The calcium carbonate reacts with the weak carbonic acid to form calcium bicarbonate which is soluble. It is then removed in solution. Carbonation is extremely effective at weathering limestone landscapes because limestone has lines of weakness in its bedding planes and joints. Carbonation has produced very distinctive landscapes‚ with distinctive landforms both on and beneath the surface. Limestone landscapes in Ireland include the Burren region of Co. Clare
Premium Carbon dioxide Mineral Limestone
问题 1 0.8 分 In cold climates‚ pot holes in the spring are most often caused by In cold climates‚ pot holes in the spring are most often caused by Oxidation Frost action Carbonation 标记此问题 问题 2 0.8 分 What type of tide is indicated by the orientation in the image below? What type of tide is indicated by the orientation in the image below? Neap tide Spring tide Storm tide Rip tide 标记此问题 问题 3 0.8 分 Using the photo below‚ what evidence is there that a
Premium Tide Rip current
liquids being tested are water‚ salt water‚ hydrogen peroxide‚ and Pepsi. The ice will be placed in each of these liquids when the liquids all reach room temperature. Some people assumed that Coca Cola would melt the ice the fastest because of it’s carbonation. But when tested they found that at room temperature water melted the ice the fastest(2). Another person tested how fast water‚Sprite‚ and orange juice melt ice. They found Sprite melted first‚ Water melted second‚ and orange juice melted last(1)
Premium Temperature Water Carbon dioxide
beverages worldwide. The company primarily offers sparkling beverages and still beverages. Its sparkling beverages include nonalcoholic ready-to-drink beverages with carbonation‚ such as carbonated energy drinks‚ and carbonated waters and flavored waters. The company’s still beverages comprise nonalcoholic beverages without carbonation‚ such as noncarbonated waters‚ flavored waters and enhanced waters‚ noncarbonated energy drinks‚ juices and juice drinks‚ ready-to-drink teas and coffees‚ and sports
Premium Coca-Cola Berkshire Hathaway