Abstract
The article deals with the results of the research and development of a new method of the aggregate preparation in the technology of lightweight concrete–wood concrete. It is developed as a new method for gentrification of organic aggregate—rice husk in the electrochemically activated cathode water with addition of a quicklime of 1%-1.5% by weight of water and adjusting the pH of the liquid medium to 14-16. It is specified that the addition of quicklime in the treatment of the alkaline water and soaking the organic aggregate in it greatly intensifies a strength gain of wood concrete. Technical novelty of the method is confirmed by the RK preliminary patent no. 16644. The results of the conducted experiments led to the enhancement of wood concrete strength made by the proposed method of organic aggregate up to 2.45 MPa in the rice husk, 2.6 MPa in the wood flake, 2.35 MPa at guza units, 2.2 for sliced rice straw, and 2 MPa for broken rice reeds. DOI: 10.5901/mjss.2014.v5n20p2682
Highlights
It is known that a wood concrete is a variation of a lightweight concrete manufactured from selected cement mixture, organic aggregates, chemical additives, and water
One of the areas of research will continue to be a development of the most effective ways to neutralize the harmful substances in the organic aggregate and treat it to obtain the desired properties
One of the least important technological processes in the production of wood concrete is a process of aggregate treatment, that is, gentrification
Summary
It is known that a wood concrete is a variation of a lightweight concrete manufactured from selected cement mixture, organic aggregates, chemical additives, and water. Organic aggregates may be of different origin and different shape of particles (crushed waste of wood species, cane chaff, fire hemp or flax, rice husk and straw, sunflower husk, etc.). The technology of manufacturing products from wood concrete is largely closer to the technology of products from normal concrete. Runout of wood concrete products is well arranged and has spread to Russia, Austria, the Netherlands, the Czech Republic, Poland, Japan, and Canada. In Europe, a wood concrete is known as “Dyurizol” (the Netherlands, Austria, and Switzerland) and “Pilinobeton” (Czech Republic). Ventures for the production of wood concrete products in the CIS through molding expand both the range of manufactured products and the type of aggregate. The use of a particular type of aggregate, whose reserves are less exhausted, is specific for each region
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