Development of pre-dried and blended lime mortars for the ready-mix market
- Technological development of pre dried and blended lime mortar mix.
- Literature review.
- The drying of sand for use in mortars.
- The benefits of dehydrating NHL, PC and GGBS.
- The different types of Natural Hydraulic Limes (NHL).
The following document will overview the development of pre-dried and blended lime mortars for the Ready-mix Market, including a overview of some of the technological developments in the market of pre-dried and blended lime mortar mix, or Ready Mix. It will conduct a literature review on the subject, as well as a discussion on the drying of sand for use in mortars, the different benefits of Dehydrating NHL, PC and GGBS, as well as the different types of natural hydraulic limes (NHL). The document will end with a commentary on further discussion regarding mortars and the future of the Ready-mix market.
[...] construction industry are experiencing the effects of the economic downslide, and one can expect this downturn to last for six to 18 months, according to Associated Construction Publications in their 2008 National Ready-Mix Concrete Association Industry Snapshot report. Sources Allen, L. W., and T. Z. Harmathy. Determination of Equivalent Thickness of Concrete Masonry Units. National Research Council of Canada, Division of Building Research, Building Research Note Allen, L. W. Fire Endurance of Selected Non-load bearing Concrete Masonry Units. National Research Council of Canada, Division of Building Research, NRC Ashurst, John, Mortars, Plasters and Renders in Conservation. [...]
[...] This is highly related to how lime is prepared and used in both the ready-mix and construction industry, as well as in the conservation realm The drying of sand for use in mortars Sand is a common ingredient in the paste called mortar, commonly made from a mixture of water, cement and an additional aggregate such as sand, as well as other forms of binders such as cement or lime. Sand is usually a prime component of concrete, and is first dried before use. [...]
[...] Rotary dryers, on the other hand, have a low heat transfer rate, and a drying time of about 5 to 25 minutes The benefits of dehydrating NHL, PC and GGBS Plastering in hydraulic lime mortar (NHL) normally needs around two or three-coats of work. This type of lime sets and hardens by a hydraulic set, and through re-absorption of Carbon Dioxide from the atmosphere. Although, it's drying and absorption processes are slower than gypsum plasters, lime plaster has some benefits from being dehydrated. [...]