CAJ | 학술논문

将2种不同粒径、碱活化的废旧硫化橡胶粉（WTR），以3种不同掺量等体积取代细骨料，制成废旧胶粉改性水泥砂浆（WTRCM），研究 WTRCM 耐水抗渗、抗压及阻尼减振性能。结果表明，WTRCM 的单面吸水率、力学强度随 WTR 掺量的增加均逐渐降低，60目和80目 WTR 体积掺量为20%的 WTRCM 单面吸水量、抗压强度分别降低了60%、69%和62%、60%，表明憎水且柔性 WTR 掺入能提升砂浆抗渗耐水能力，但会降低其抗压强度，且掺加粒度细的 WTR 更为有利。WTRCM 的损耗因子随 WTR 掺量增加而逐渐增大，60目和80目 WTR 体积掺量为30%的 WTRCM 阻尼减振效果可提高分别达30%、36%，表明具有柔韧性的 WTR 掺入有利于快速衰减掉WTRCM 所受的振动能量，且掺加粒度细的 WTR 更为有效。
장2충불동립경、감활화적폐구류화상효분（WTR），이3충불동참량등체적취대세골료，제성폐구효분개성수니사장（WTRCM），연구 WTRCM 내수항삼、항압급조니감진성능。결과표명，WTRCM 적단면흡수솔、역학강도수 WTR 참량적증가균축점강저，60목화80목 WTR 체적참량위20%적 WTRCM 단면흡수량、항압강도분별강저료60%、69%화62%、60%，표명증수차유성 WTR 참입능제승사장항삼내수능력，단회강저기항압강도，차참가립도세적 WTR 경위유리。WTRCM 적손모인자수 WTR 참량증가이축점증대，60목화80목 WTR 체적참량위30%적 WTRCM 조니감진효과가제고분별체30%、36%，표명구유유인성적 WTR 참입유리우쾌속쇠감도WTRCM 소수적진동능량，차참가립도세적 WTR 경위유효。
Two different particle sizes of waste tire rubber powder (WTR) were firstly alkali activated, and WTR mod-ified cement mortar (WTRCM) was prepared with three different WTR contents replacing the same volume dosage of fine aggregates. The water absorption, compressive strength and damping properties of WTRCM were studied, respectively. The results show that the sided water absorption, mechanical strength of WTRCM both gradually decrease with increasing con-tent of WTR. When the dosage of WTR with 60 mesh or 80 mesh is 20%, the corresponding sided water absorption and compressive strength of WTRCM are decreased by 60%, 69%, 62%, 60%, respectively. It’s shown that the incorporation of hydrophobic and flexible WTR can improve water impermeability capacity, yet impair compressive strength of the mor-tar, and that with finer WTR loading is more favorable. Loss factor of WTRCM increases with increase of WTR dosage, the damping ratio of WTRCM with 60 mesh and 80 mesh WTR dosage of 30% can be increased up to 30%, 36%, respective-ly, which is indicated that the incorporation of the flexible WTR rapidly attenuates vibration energy of WTRCM, and that with finer WTR is more effective.