Rice husk ash (RHA) is a promising pozzolanic alternative material for partial replacement of ordinary Portland cement to increase the durability and strength of concrete and, at the same time, to decrease the corrosion effect caused by the harsh environment conditions.
Because RHA has a finer particle size than cement, the RHA blended cement concrete performs well in terms of fresh properties (workability, consistency, and setting time).
According to research by Jongpradist, et al (2018), Here are some conclusion made from the experiment:
Results from the experiments confirm that ground rice husk ash could be beneficially added into cement deep mixing to enhance the strength characteristics. The efficiency of rice husk ash depends on the proportion of the cement, rice husk ash, and water content in the mixtures as well as the curing time. The RHA enhances the strength of cement-admixed clay by larger than 100%, depending on the addition rate and mixing components. For the curing period of 14 and 28 days and the range of water content in this study, the rice husk ash exhibits higher efficiency on Portland cement replacement when the cement and cementitious contents in the mixture are not less than 20 and 35%, respectively. The RHA content in overall cementitious materials which enhances the strength of the mixture can be larger than 50%. When compared with fly ash of similar grain size, the efficiency of rice husk ash is higher when the content to be added is greater than 15%.
On the other hand Rice Husk Ash is a green commodity that are produced from burning husk, which came from separation during milling process. The usage of this product to enhance the quality in construction usage might be a new prospect especially in countries that currently undergo rapid expansion in infrastructure.
Fun Facts: White Rice Husk Ash usually has higher content in Silica compared to Black Rice Husk Ash. The color of WRHA is usually white, higher quality (higher silica content) sometimes causing the RHA to be a bit bluish-gray color. This quality is rarely found in rice husk ash suppliers, making it a rare commodity.
Where to find Rice Husk Ash?
In general, Rice Husk can be found in any rice-producers countries such as Brazil, Thailand, Indonesia, and others. The only challenge is the production technical aspect in creating the consistency of combustion to produce high quality Rice Husk Ash. Usually Black Rice Husk Ash is the common products found in marketplace, compare to White Rice Husk Ash due to lack of controlled burned rice husks (WRHA is the result of complete burned which Carbon is less than <0.1%).
If you're looking for White Rice Husk Ash , Fortuna Commodities has one of the best quality of Rice Husk Ash. We ensure the quality by reducing the water content and consistency in color. This product obviously a great prospect due to its multi purposes in many industrial sectors.
Here's the link to contact us regarding White Rice Husk Ash:
Comentarios