สมบัติทางกายภาพและทางกลของคอนกรีตมวลเบาชนิดเซลลูล่าร์ผสมเศษแก้วบดละเอียด

บทคัดย่อ

The objective of this research was to study the basic properties including of chemicalcompositionsand physical propertiesoffinely ground glassused toreplacement of fineaggregate(riversand) for producing thecellular lightweightconcrete.The physical and mechanical propertiesofcellular lightweightconcrete wereinvestigated.Themixtures werekept the densityof thecellular lightweightconcreteat900and 1,100kg/m3. Acceptable variable betweenthe designated and measured densityhas beenfixed as±50kg/m3.The mix design was used finely ground glass replacing river sand at ratios of 0, 20, 40 and 60 wt.% The total powder to sand ratio was 1:1, foaming agent was diluted with water at a mass ratio of 1:30 and a mass ratio of water to powder of 0.5 was used for all mixtures. Thetested propertiesincluded the basic propertiesof materials, fresh properties werethe unit weight in fresh state, slump flow, and setting times, the mechanical property was the compressive strength. The test results indicated that the finely ground glass has a main chemical composition is silicon dioxide (SiO₂). The average particle size equals to 85.20 Micrometers. Used of finely ground glass for producing the cellular lightweight concrete can increased the workability and reduce the setting time period. The compressive strengthand waterabsorptionsatisfied inaccording withtheThailand Industrial Standard TIS-2601-2556 (Cellular Lightweight Concrete).