- 期刊
EFFECT OF AGGREGATE VOLUME FRACTION ON THE ELASTIC MODULI AND VOID RATIO OF CEMENT-BASED MATERIALS
細骨材體積比對水泥質材料孔隙含量及彈性模數之影響
摘要
本研究主國探討骨材含量對水泥砂漿中孔隙含量及彈性模數之影響。研究中以六種不同細骨材體積比(細骨材體積/水泥砂漿體積=0、0.05、0.1、0.2、0.3、及0.4)與三種不同水灰比(0.3、0.4、及0.5)之水泥砂漿圓柱試體進行實驗，理論模式方面，將水泥砂漿視爲三相複合材料(水泥漿體、細骨材、及孔隙)。應用雙置入物理論模式配合複合材料各組成物材料性質與含量之實驗值，推估不同細骨材體積比及不同水灰比之水泥砂漿中的孔隙體積。
關鍵字
無資料並列摘要
The effects of aggregate volume fraction on the void ratio and the elastic modulus of mortar were studied. Cylindrical specimens with six volume fractions(a/t=0.,0.05,0.1,0.2,0.3,and 0.4)of fine aggregate and various water/cement ratios(w/c=0.3,0.4,and 0.5)were cast and tested. Double inclusion model for three-phase composite(matrix, aggregate, and void)was used to predict the volume of total void based on the properties and quantities of the components and composites. Based on this study when higher volume fraction of aggregate is used in the mix, the elastic modulus of the composite should be computed by introducing a third phase(void)into the composite. For the mix with lower volume fraction of aggregate, because the volume of void is relatively small in comparison with the volume of other components, two-phase approach is appropriate for evaluating the elastic moduli of the composites.
延伸閱讀
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