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How cement was produced before the invention of the rotary kiln?
Before the invention of the rotary kiln, cement production was a much more laborious process. It was usually stirred continuously in a wheelbarrow or other receptacle.
What is peritectic steel?
peritectic steels are ultra low carbon steels that fall into the phase change boundary, namely upper phase, that is it is directly influenced by alloying elements which can make this high tensile, high shrink steel difficult to cast for the automotive industry, great care has to be taken in mould powder choices, and also the cooling rate in terms of litres/Kilogramme. Using the Carbon equivalent to identify the peritectic chemistry is a bit hit and miss, hence the practicalities of making this product need much more study. It is problematic globally, indeed some producers cannot continuously cast this grade. Mould powder, secondary cooling and continuous unbending in the machine, all have to be optimised...expect disappointments!
How much does it cost to make a water treatment plant?
how much does it cost to build a big water plant?
What are the characteristics of titanium?
Answer Titanium is a great alternative for structural material in terms of weight and strength. Titanium is lighter than Steel and much stronger than Aluminum. It has a low heat transfer rate, which makes it useful for high-heat applications. The one major draw-back with titanium is that it retains heat during maching of part during manufacture due to its low heat transfer rate. Titanium has to be machined at 1/5 the rate of steel, even with plenty of coolant applied to the cutting tool. This is one reason a Titanium part is more expensive; if it takes 5 times longer to machine a part, it will be 5 times more costly. The other reason is that Russia has a monopoly on the titanuium resources. Someone asked me which part would be lighter if made for the same load: Steel, Titanium or ALuminum. I analyzed a simple rod under an axial load and determined the minium size of the optimized rod then calculated its weight. The Titanium rod came out 1/3 lighter than the Steel rod. For bending or other load applications, this ratio will vary. The strength ratio can easily be found by ratioing the Young's Moduls and the unit weight. Fatigue-- A few years ago, Titanium did not have very good fatigue properties. The standard titanium alloy was Titanium 6Al-4V. The fatigue S/N curve of this alloy is very steep; it does not flatten out at the higher cycles as Steel S/N curves will do. However, new alloys have been developed that have much better fatigue properties.
What does a yellow flame mean on a gas boiler?
It means you have too much air intake It means you have too much air intake
How much weight of portland cement bags?
94 pounds per bag.
How much would 5 gallons of cement weigh?
5 gallons of cement would weight 5 * the weight of 1 gallon
What is the weight of 2 gallons of cement?
I have recently picked up a 5 gallon bucket of cement and I can assure you that it did not weigh 131 pounds. My guess is that the 26.71 calculation is for a 1 gallon solid piece of cement (e.g., a 1 gallon clinker). I'm also guessing that the question is referring to ground cement, which is a powder. Powdered cement is a particulate and therefore has a significant amount of air due to particle packing. Calculating the weight of a powder from volume is much more difficult than just using density. If you want to know what a gallon of cement weighs, the easiest way will be to use a scale.Portland Cement has a specific gravity of 3.15. Water weighs 8.34 pounds per gallon, and so the problem set up to determine the weight of one gallon of Portland Cement is as follows:8.34 x 3.15 = 26.271 pounds Other brands and/or types of cements have different specific gravities. Visit the following Web address to view a list of the specific gravities for certain substances:http://www.reade.com/Particle_Briefings/spec_gra2.html
At a building site, there are 16 pallets with sacks of cement. The Total weight of all the pallets and cement is 4,856 pounds. each pallet with cement weights the same amount how much does each pallet with cement weight?
303.5lb
How much cement does the US produce?
Production of portland and masonry cement in the United States, excluding Puerto Rico, increased by 2% to 86.4 million metric tons in 2017.
1 cubic meter is equal to how much kg of cement?
Cement content varies on concrete type, but is typically 400kg per cubic metre. According to the manufacturer, Portland Cement (which is what 99.9% of all cement actually is) has a density of 1505kg/cubic meter.
Why was the Newark Lime and Cement Company's mine at hasbrouck park in Kingston Ny abandon?
The discovery of portland cement which could be made anywhere was much cheaper then the rosendale cement which required extensive mining and transportation. The natural cement industry collapsed in the early 20th century.
What is sulphur concrete?
Ordinary portland cement based concrete consists of a mixture of aggregates bound together with portland cement. In the presence of water a chemical reaction takes place and the portland cement is hydolysed. At the end of this chemical reaction the cement becomes hard and binds the aggregate particles together.Sulphur concrete is composed of a similar mixture of aggregates, however, and this is the big difference, there is no portland cement involved. Instead the aggregate mixture is bound together by molten sulphur at elevated temperatures. Upon placing, the sulphur concrete is allowed to cool and as it cools the molten sulphur becomes a solid again binding the aggregates together imparting rigidity to the concrete mix.Because sulphur concrete contains no alkaline materials, unlike portland cement mixtures, it is very much more resistant to acid attack and thus finds favour in industry where acid resistant concrete is desirable.
How much gun powder is in a m16 bullet?
Depends on which powder is used, and there are several. If using Winchester W748, it would be about 23.5 grains of weight of powder.
How much dose a concrete truck weight?
It depends on how much the truck weighs, how much cement it is carrying and how many people there are in the truck
How much does 1 cubic yard of cement weight?
What is the weight of one cubic yard of cement? If you are asking the weight of 1 cubic yard of CONCRETE it is approximately 2 tons or 4000 pounds per cubic yard when wet.
Why does a bag of cement weigh 94 pounds?
The weight of a 94 lb. sack of cement is incidental - the bag is packaged in that size in order to hold one cubic foot of cement, and 94 pounds is simply what one cubic foot of dry cement powder weighs. Mix design for concrete was originally performed by volume and not by weight. Mix designers were initially concerned about variations in density and thought volume would deliver the most consistent results. As time progressed, they found that mix design were not adversly affected when designed by weight, (which was also much simpler), and therefore became used industry wide. Because 94lbs of cement is, as noted above, what 1 cubic foot of cement weighs, the 94 lb sack was a backhanded way for the mix designers to check the weight calculations easily with known volumes.
