What is a concrete additive?

Concrete is at the heart of the history and its different product families, meets the needs of concrete plants, precast factories and construction companies. With mold release oils and curing products essential on each site, Cement products Malaysia offers a complete range of admixtures and additives for ever more efficient and innovative concretes: Superplasticizers, accelerators, mass water repellents, etc.

Cement composition

Cement is the main hydraulic binder that makes up all concrete or mortar. This fine, almost volatile mineral powder is an essential material, the fruit of human imagination used in all concrete or mortar-based constructions.

Fired at 1450 ° C in a rotary oven, the mixture, mainly composed of limestone, clay and chemical additives is crushed to obtain Clinker. The different dosages are the subject of scholarly calculations with the aim of improving and adapting the resistance of the cement to the multiple construction applications.

The different types of cements

Depending on the destination and use, the cements have been classified into different categories and names meeting the standard in force for these materials.

The Portland cement or CEM1, the most commonly used (reinforced concrete or prestressed).

The Portland cement compound or CEMII A or B for mass work.

The blast furnace cement or CEM III A or B.

The blast furnace cement or CEM III C.

The pozzolanic cement or CEM IV A or B formerly CPZ.

The compound Cement or CEM VA or B.

These gray cements are cements to be used for very specific uses.

The characteristics of a concrete or a mortar that can be optimized by the use of an ad hoc admixture:

Consistency;

Setting time;

Waterproofing;

Frost resistance;

Mechanical resistance;

Impact resistance;

Abrasion resistance;

Chemical resistance;

Color and aesthetics;

Etc.

How to properly use admixtures for concrete, mortar and plaster?

Any concrete additive should be used with caution. Here are some tips to follow to make your concrete, mortar or plaster mix successful.

Dose the adjuvants very precisely. An under dosage decreases the effectiveness, an overdose causes undesirable effects;

Avoid mixing additives from different manufacturers;

Store the products away from frost and sun;

Respect the expiration date;

Add the adjuvant to the mixer when the mixture is already thoroughly wet.

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