because of acid rain
Stepped pyramids tend to be made of things like sandstone and limestone. These are based on sand and so are easy to make in places like the desert
Mayan temples and pyramids were made from limestone.
First of all there is the travertino, a limestone, then tuff for the other pillars and radial walls, tiles for the floors of the upper storeys and the walls; finally, concrete (a.k.a. cement) for the vaults.
island that are made up of limestone
glass
No. Glass is made from silicon/sand and smaller portions of soda ash & limestone
Mix Aggregates of varied diameter (ranging from sand and hardcore typically) with cement (made with limestone and pulverised fuel ash) and water! enjoy!
Made of: Sand, soda ash, limestone, and borax are raw materials for glass making. Larger quantities of glass are made in furnaces.This website should help you learn how they are made :):):):)
It depends on what type of roadway. There is Asphalt which is made from stones, sand, and gravel held together by asphalt cement. There are also roadways made from Concrete is consists of gravel, fine sand, and cement (which is composed of ash and limestone).
Glass is safer because it is made from limestone,sand and soda ash. Plastics is made from petrol-chemicals which have been know to be carcinogenic.
Glass is mainly sand- about 75%, but soda ash and limestone are usually added to that. Other ingredients can be added to change properties and colors.
Concrete is neither; it is a mixture of cement (which is made of various ingredients including limestone, gypsum and ash) and aggregates (stones and sand), set with water.
Limestone and sand stone are both sedimentary rocks, and marble is made out of limestone when heated . :) Hope that helped.
Limestone and sand stone are both sedimentary rocks, and marble is made out of limestone when heated . :) Hope that helped.
Limestone and sand stone are both sedimentary rocks, and marble is made out of limestone when heated . :) Hope that helped.
Fly ash is an ingredient in cement manufacturing. The main components of cement are limestone, clay, sand, and fly ash. The cement folks are interested in the silica and alumina in the fly ash, so depending upon the amount of those in the fly ash allows them to decrease the amount of clay and sand which is where they get those constituents if they don't use fly ash. The advantage is to decrease the volume of clay and sand that have to be mined, realizing a cost savings as well as saving the clay and sand for future generations.