Welcome to
On Feet Nation
dnna mayugh Online
Selma Online
George Online
James Kruger Online
Khalid Shaikh Online
goditac499 Online
Posted by Robert on September 20, 2024 at 10:03am 0 Comments 0 Likes
Posted by jack on September 20, 2024 at 10:03am 0 Comments 0 Likes
Posted by dnna mayugh on September 20, 2024 at 10:03am 0 Comments 0 Likes
Posted by Selma on September 20, 2024 at 10:03am 0 Comments 0 Likes
Pigments are used to change the color of concrete structures. In industrial production for these purposes are used: carbon black; titanium dioxide; chromium oxide; umbra. All pigments act on the concrete mix in the same way: they absorb part of the light waves, while waves with a different length reflect. Such pigment additives are highly resistant to ultraviolet light, do not fade in the sun, are not washed off by rain, and are resistant to aggressive chemical environments.
n construction, concrete types are classified according to several parameters. Most often, artificial stone is classified: by strength; by density; by the type of binder; frost resistance; for water resistance; by abrasion; by the rate of strength gain.
Strength rate Strength rate (hardening)
important indicator of concrete structures, on which the time of their commissioning or the time of finishing work depends. Strength is gained in an abrupt manner: in the first 5-7 days after pouring or manufacturing, the hardening indicator reaches 70%, by the end of 28 days it approaches 100% (subject to humidity and temperature conditions). After this period, the strengthening of concrete structures continues and can last for several years
There are 2 types of concrete mixes:
fast-hardening and slow-hardening. To determine the rate of strength gain, the% strength of a 2-day concrete structure is divided by the% strength of the same structure after 28 days. With an indicator of more than 0.4, the structure is classified as fast-hardening. A value less than 0.4 indicates slow hardening.
The service life of the constructed building or structure directly depends on the strength and reliability of concrete structures. Therefore, even before the start of construction, you need to decide what brand and what technical characteristics of the material are best suited for solving the tasks.
Cement and concrete - what is the difference between these materials, most people cannot immediately tell. The use of both types of mortars in construction makes it possible to obtain large-sized structures, which are the basis for the construction of various structures. In addition, cement and concrete are used for interior decoration, for example, when pouring floors.
Designation of concepts Cement - a special solution, which is obtained by mixing sand, cement fractions and water, is used for the installation of various structures, laying out walls and other installation work. Builders introduce plasticizers into cement, which serve to increase strength. They give the solution such qualities as moisture resistance, frost resistance. With concrete is called a composite material in which cement, water and aggregates are mixed (most often different grades of crushed stone and other components are used). In addition, there is concrete obtained by hardening a special mixture. For More Details Visit : contractorsconcrete
© 2024 Created by PH the vintage. Powered by
You need to be a member of On Feet Nation to add comments!
Join On Feet Nation