Concrete and mortar

1.2. Its functions.

The function that performs the concrete is to serve as a binder for the bricks of our homes are well sealed to each other and do not separate. Not only used for houses, also for sidewalks, floor etc.

1.3.How it is made

There is a natural product and is made ​​by mixing different minerals in different proportions. It is a mixture of metal oxides and nonmetallic oxides , mixed silicatosy calcium aluminate which is added small amounts of compounds of magnesium and iron . Also cast is usually added .

Elaborations the cement process is performed in stages and are:

1) First, limestone and clay are mixed in appropriate proportions is ground . This mixture is moistened with water to facilitate homogenization and then dried in rotary kilns can be up to 100 meters long and several meters in diameter rotating at a rate of 1-2 rpm . And homogenized material enters the upper end of the furnace and in the opposite direction , it becomes llegaraire at a temperature of 1400 ° C in the oven and the moisture is removed as sulphates and carbonates as well decompose volatile acids ( dioxido Sulfur , carbon dioxide given ) . Oxides of silicon, aluminum , calcium and iron react chemically . The process inside the oven lasts approximately three hours and the clinker is obtained.

2) the clinker is cooled .

3) grinds , and generally , you add gypsum.

No es un producto natural y se elabora mezclando distintos minerales en diferentes proporciones. Es una mezcla de oxidos metalicos y oxidos no metalicos, mezcla de silicatosy aluminatos de calcio a la que se le agrega pequeñas cantidades de compuestos de magnesio y de hierro. Tambien se suele añadir yeso.

El proceso de elaboracio del cemento se realiza en etapas y son las siguientes:

1) En primer lugar, se muele la piedra caliza y la arcilla que se mezclan en las proporciones adecuadas. Esta mezcla se humedece con agua para facilitar su homogeneizacion y luego se la seca en hornos rotatorios que pueden tener hasta 100 metros de longitud y varios metros de diametro que giran a razon de 1 a 2 vueltas por minuto. El material ya homogeneizado entra por el extremo superior del horno y en sentido contrario, se le hace llegaraire a una temperatura de 1400° C. en el horno se elimina la humedad y se descomponen los sulfatos y los carbonatos como tambien los acidos volatiles( dioxido de Azufre, dioxido de carbono). Los oxidos de silicio, de aluminio, de calcio y de hierro reaccionan quimicamente. El proceso dentro del horno dura unas tres horas aproximadamente y de el se obtiene el clinker.

2) el clinker es enfriado.

3) se lo muele, y generalmente, se le agrega yeso.

Concrete is easily and readily prepared and fabricated in all sorts of conceivable shapes and structural systems. Its great simplicity lies in the fact that its constituents are ubiquitous and are readily available almost anywhere in the world. As a result of its ubiquity, functionality and flexibility it has become by far the most popular and widely used construction material in the world.

1.What is concrete?

1.What is concrete?

1.1.Its functions

1.2.How it is made

2.What is mortar?

2.1.Its functions

2.2.How it is made

INDEX:

Concrete

And Mortar

Susana Lucía García Rubio

Rubén Calderón Núñez

3ºA

2.What is mortar