A natural choice
Eighty percent of the concrete comprises gravel, sand and stones of suitable sizes. Fourteen percent comprises cement – ground limestone that is heated up to 1300°C. Water, that comprises the remaining six percent, is added to initiate the hardening process. Small quantities of additives (0.1-0.3 percent) are sometimes added to improve the concrete in some way, such as in terms of frost resistance or workability.
But even when it comes to chemical additives, these usually involve harmless natural products. One example is vinsol resin, which is mixed into the concrete to create small air bubbles. The role of the bubbles is to provide expansion space for freezing water, which counteracts cracking and thereby improves the frost resistance. Another example is polycarboxylate, which is a polymer that reduces friction in the concrete. This improves the workability of the concrete markedly, which makes it possible to speed up the casting process and improves the ergonomics for the concrete workers.
Click on the link below for for more detailed product description and information on:
• Strength classes
• Cement
• Consistency
• Aggregate grading
• Handling
• Processing/vibration