CAJ | 학술논문

采用建筑垃圾经强化工艺处理后筛分得到的粒径不大于4.75 mm的再生细骨料代替天然砂制备干混抹灰砂浆,并掺加一定量的粉煤灰进行改性,调整用水量控制其稠度在90 mm~100 mm范围内,系统研究了不同粉煤灰掺量及胶砂比对其基本性能和力学性能的影响.研究结果表明,干混抹灰砂浆的分层度、表观密度和含气量与粉煤灰掺量及胶砂比均呈现出较强的线性关系,其抗压强度随着胶砂比的减小逐渐降低,且粉煤灰掺量为10%的抗压强度在不同胶砂比条件下均达到最高.
채용건축랄급경강화공예처리후사분득도적립경불대우4.75 mm적재생세골료대체천연사제비간혼말회사장,병참가일정량적분매회진행개성,조정용수량공제기주도재90 mm~100 mm범위내,계통연구료불동분매회참량급효사비대기기본성능화역학성능적영향.연구결과표명,간혼말회사장적분층도、표관밀도화함기량여분매회참량급효사비균정현출교강적선성관계,기항압강도수착효사비적감소축점강저,차분매회참량위10%적항압강도재불동효사비조건하균체도최고.
Using recycled fine aggregate that the diameter less than 4.75 mm by building garbage after strengthening process and screening instead of natural sand to prepare dry-mixed plastering mortar, and add a certain amount of fly ash to modified, adjusting the water to control the consistency in the range of 90 mm~100 mm, researching the im-pact of the content of fly ash and binder to sand ratio on its basic performance and mechanical properties. The re-search results show there is a strong linear relationship between the layering degree, apparent density, air content of dry-mixed plastering mortar and the content of fly ash and binder to sand ratio;and the compressive strength decreas-es with the decrease of the binder to sand ratio;and in the binder to sand ratio, the compressive strength reached the highest when the content of fly ash being 10%.