Shelf life of cement : we appreciate the importance of the indicator

What you need to know about cement?

cement - it artificially inorganic substance having sticky structure.Used for manufacturing all kinds of concrete and mortar.To implement packaged in paper or plastic bags.The term of validity of cement varies depending on storage conditions, but does not exceed 2 years.

-stock main mineral component divided:

• Portland cement, the most commonly used form of this material, obtained by grinding clinker and gypsum, are the basis of alite and belite (calcium silicates).It has different subtypes: fast curing, hydrophobic, plasticized, sulphate and the like;
• aluminous cement, is produced by grinding the pre-fired fine alumina raw material mixture consisting essentially of limestone with a high aluminum content.Different speed setting, frost resistance, as well as high fire resistance;
• Sorel cement (magnesia) is at the heart of caustic magnesite and dolomite.The main feature - mixing aqueous salt solutions.It has high strength, fast hardening, as well as excellent adhesion to wood.Disadvantages include low water resistance, as well as sufficiently high corrosion activity.Typically used for floors;
• blended cements - building materials, obtained by mixing the above-mentioned types of mineral supplements, airy astringent;
• acid-cement based contains sodium silicate.To activate the ready state shuts specialized aqueous waterglass.

cement enemies during storage

On the strength of the material is divided into brand M100-M600 , designating the compressive strength of 100 to 600 kg / cm², respectively.Today, cement brand M300 and below is not issued.Mark M600 called "military" and used in the construction of military facilities.

has long been known that prolonged storage of cement significantly reduces its activity.The main enemies of stored material are moisture and carbon dioxide in the air.And initially higher than the activity of building material, the more intense the loss of her.The main risk is primarily threatened bulk cement, and even acceptable conditions cement storage in airtight silos do not save all the trouble.Therefore, such a composition preferably once a month "pereduvat" from one container to another.

How to store cement - a few practical tips

Often, due to the constant rise in prices for the material, the high cost of shipping, he bought in store.And here in all its glory the question arises, how to store cement.Many hope for his "zapakovannost" in paper bags and left in places not intended for it.And when it comes to the use of time are surprised to find compacted stone.

Whatever happens this situation, even if it was necessary to purchase the building material for the future, you should try to maximize the shelf life of cement materials at hand.Of course, no one will unpack the bags and pour the material from the container into the container every month.

But all the paper bags to wrap in plastic wrap is quite capable.And even if it is quite a long and laborious process.But the thought that in this way you save your money, must be warm and push the path of labor achievements.

reasonable question, as stored cement should have a logical and sound like: how much and where it is stored?These two concepts are inseparable.From the storage location depends and the shelf life of this material.

First we need to understand that you can not be stored in wet cement and damp basements, outdoors and even in covered areas, asbarriers to the natural moisture there.It is desirable to cement Storage in dry resealable rooms, pre-wrapped in bags of polyethylene film.Even if the outer layer partially seize, in the middle of the bag material will be suitable for use.