CAJ | 학술논문

通过试验研究水灰比、再生粗骨料取代率和用水量对再生混凝土早期抗压强度和抗折强度的影响。研究结果表明，再生混凝土各龄期的强度系数随水灰比、骨料取代率、单位用水量等因素变化不大。再生混凝土的各个龄期的抗压和抗折强度均随水灰比和再生骨料取代率的增大而降低。根据试验结果建立了再生粗骨料取代率为100％的再生混凝土早期抗压强度和抗折强度计算模型，该模型计算结果与他人试验结果吻合较好。
통과시험연구수회비、재생조골료취대솔화용수량대재생혼응토조기항압강도화항절강도적영향。연구결과표명，재생혼응토각령기적강도계수수수회비、골료취대솔、단위용수량등인소변화불대。재생혼응토적각개령기적항압화항절강도균수수회비화재생골료취대솔적증대이강저。근거시험결과건립료재생조골료취대솔위100％적재생혼응토조기항압강도화항절강도계산모형，해모형계산결과여타인시험결과문합교호。
The influences of water-cement ratio,replacement ratio of recycled coarse aggregate,and water amount on early compres-sive strength and flexural strength of recycled concrete were investigated by experiments. Research results show that the strength ratio of recycled coarse aggregate concrete didn′t vary with water-cement ratio,replacement ratio and water amount,the compressive strength and flexural strength at different ages decrease with the water-cement ratio and replacement ratio. The models for early compressive strength and flexural strength of recycled concrete with 100% replacement of recycled coarse aggregate are established according to ex-periment results,and the calculated values of the strength of recycled coarse aggregate concrete are in good agreement with the test val-ues obtained by other researchers.