CAJ | 학술논문

大体积混凝土早期裂缝问题已经是结构设计中必须考虑问题，在裂缝控制方面，学者们已经进行了大量的实践研究，总结了诸多原因。粉煤灰作为混凝土的第四组分，已经被工程界所接受。在混凝土中掺加粉煤灰可以有效的降低混凝土早期水化热，减小温度应力，防止结构早期开裂。粉煤灰添加量对混凝土的裂缝影响不明确，研究者虽进行了大量的试验，但对结果量化者甚少。通过总结试验数据，粉煤灰掺量对早期混凝土应力影响进行量化，独立提出混凝土早期开裂损伤控制指标，方便工程设计施工使用。
대체적혼응토조기렬봉문제이경시결구설계중필수고필문제，재렬봉공제방면，학자문이경진행료대량적실천연구，총결료제다원인。분매회작위혼응토적제사조분，이경피공정계소접수。재혼응토중참가분매회가이유효적강저혼응토조기수화열，감소온도응력，방지결구조기개렬。분매회첨가량대혼응토적렬봉영향불명학，연구자수진행료대량적시험，단대결과양화자심소。통과총결시험수거，분매회참량대조기혼응토응력영향진행양화，독립제출혼응토조기개렬손상공제지표，방편공정설계시공사용。
To control the crack of mass concrete has always been an important subject for structure design.Scholars has been paid atten-tion to crack control and many achievement have been made.Fly ash as the forth component of concrete have been accept.Many results showed that fly ash can reduce the hydration heat of concrete and improve the property of concrete anti-cracking.The effect of the number of fly ash on the property of concrete anti-cracking are researched.For easy to construct,the concrete anti-cracking coefficient is defined.