Difference between revisions of "Use Cement Additives"
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Cement additives, including cement dyes, are all designed to make working with cement easier and produce far better results. | Cement additives, including cement dyes, are all designed to make working with cement easier and produce far better results. | ||
When used in such mixes, cement is not always a perfect product. It can shrink during drying out causing cracks to develop, and it can be too rigid. If too much water is used in the mix, the end result will be weak concrete or mortar. In hot weather the mix can dry too quickly and in cold weather too slowly, perhaps even being further damaged by frost. No standard mix is waterproof and most mixes will, during the early drying out period, develop surface 'pores' as air bubbles escape, again causing weakness and allowing water penetration. Cement additives or admixtures can help to prevent any of these problems arising; any projects you undertake using Ordinary Portland Cement or Mastercrete will be successful. Here is what to do. | When used in such mixes, cement is not always a perfect product. It can shrink during drying out causing cracks to develop, and it can be too rigid. If too much water is used in the mix, the end result will be weak concrete or mortar. In hot weather the mix can dry too quickly and in cold weather too slowly, perhaps even being further damaged by frost. No standard mix is waterproof and most mixes will, during the early drying out period, develop surface 'pores' as air bubbles escape, again causing weakness and allowing water penetration. Cement additives or admixtures can help to prevent any of these problems arising; any projects you undertake using Ordinary Portland Cement or Mastercrete will be successful. Here is what to do. | ||
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== Steps == | == Steps == | ||
#Take precautions before you start. Most cement additives are non-flammable and non-hazardous in normal use but sensible precautions should be taken when using them in much the same way as when using cement which is an alkaline product. | #Take precautions before you start. Most cement additives are non-flammable and non-hazardous in normal use but sensible precautions should be taken when using them in much the same way as when using cement which is an alkaline product. | ||
