CAJ | 학술논문

为了研究掺加减缩剂和内养护剂的自制混凝土的抗裂性能，进行了湿热条件下隧道二次衬砌模型的荷载试验。研究结果表明：掺抗裂外加剂的混凝土强度较低，但抗裂性能得到了提高；各混凝土模型受力规律一致，且商混模型所受内力大于掺内养护剂的，掺减缩剂的最小；在混凝土出现裂缝的前提下，湿热循环会导致混凝土裂缝增大，耐久性降低的作用效果显著加剧。
위료연구참가감축제화내양호제적자제혼응토적항렬성능，진행료습열조건하수도이차츤체모형적하재시험。연구결과표명：참항렬외가제적혼응토강도교저，단항렬성능득도료제고；각혼응토모형수력규률일치，차상혼모형소수내력대우참내양호제적，참감축제적최소；재혼응토출현렬봉적전제하，습열순배회도치혼응토렬봉증대，내구성강저적작용효과현저가극。
In order to study the anti-cracking performance of concrete with admixtures, the load tests about the secondary lining models of different concrete were carried out under the conditions of heat and humid. It is found that anti-cracking admixtures can make strength decrease, but anti-cracking performance is improved;internal force distribution of the model are consistent;once the concrete cracks, wet and heat cycle can significantly aggravate cracking,decreasing the durability of concrete.