Feasibility study on the suitability of dielectric barrier discharge plasma treatment of desert sand for concrete production purposes  

作　　者：Yorick FENNER Martin BELLMANN Andreas TUMMEL Christoph GERHARD 

机构地区：[1]Faculty of Engineering and Health,University of Applied Sciences and Arts,Göttingen 37085,Germany [2]Application Center for Plasma and Photonics,Fraunhofer Institute for Surface Engineering and Thin Films,Göttingen 37085,Germany [3]School of Industrial and Information Engineering,Politecnico di Milano,Milano 20133,Italy

出　　处：《Plasma Science and Technology》2025年第1期111-117,共7页等离子体科学和技术(英文版)

基　　金：funded by the Bundesministerium für Bildung und Forschung(Nos.13FH6I06IA and 13FH6I08IA)。

摘　　要：Due to the continuously increasing building and construction industry,sand has become one of the most questioned raw materials worldwide.However,the available amount of sand suitable for concrete production is orders of magnitude lower that the demand and consumption.Even though desert sand is sufficiently available,it is not usable for realizing stable concrete due to its surface shape.Against this background,the suitability of energy-efficient‘cold'dielectric barrier discharge plasma operated at atmospheric pressure for improving the properties of concrete produced from desert sand was investigated in this contribution.It is shown that such plasma treatment allows for a certain roughening and re-shaping of sand grains.As a result,the mass flow of treated sand is decreased due to an improved wedging of sand grains.This leads to a certain increase in compressive strength of concrete samples.Even though this increase is marginal,the suitability of the applied type of plasma for modification of the geometry and surface chemistry of sand grains was proven,showing its basic potential for the treatment and preconditioning of sand used for concrete,mortar or plastering.

关 键 词：plasma treatment atmospheric pressure plasma SAND CONCRETE surface roughening mass flow compressive strength 

分 类 号：TU528[建筑科学—建筑技术科学] O539[理学—等离子体物理]