CAJ | 학술논문

研究了高吸水树脂（ SAP）对高水胶比普通预拌混凝土工作性能、力学性能、收缩性能的影响，结果表明SAP的引入会在一定程度上增加外加剂的掺量，比普通预拌混凝土约提高0．1％~0．2％。SAP对混凝土的早期强度有一定的负面影响，后期强度比普通混凝土略高。SAP对预拌混凝土的干燥收缩有较好的补偿作用，有助于降低开裂风险。对比了内养护预拌混凝土，膨胀剂混凝土及普通混凝土在高温炎热环境条件下的道面应用效果，结果表明内养护混凝土应用效果良好，而膨胀剂混凝土及普通混凝土地坪均有不同程度的开裂，显示出内养护技术对于解决混凝土的干燥收缩开裂问题具有较好的效果。
연구료고흡수수지（ SAP）대고수효비보통예반혼응토공작성능、역학성능、수축성능적영향，결과표명SAP적인입회재일정정도상증가외가제적참량，비보통예반혼응토약제고0．1％~0．2％。SAP대혼응토적조기강도유일정적부면영향，후기강도비보통혼응토략고。SAP대예반혼응토적간조수축유교호적보상작용，유조우강저개렬풍험。대비료내양호예반혼응토，팽창제혼응토급보통혼응토재고온염열배경조건하적도면응용효과，결과표명내양호혼응토응용효과량호，이팽창제혼응토급보통혼응토지평균유불동정도적개렬，현시출내양호기술대우해결혼응토적간조수축개렬문제구유교호적효과。
The effect of super absorbent polymers( SAP)on the workability,mechanical and shrinkage properties of high water-binder ratio ready-mix concrete was studied. Results indicate that the dosage of admixture increase by 0.1%~0.2%with the introduction of SAPs and the SAPs had a negative effect on the early-age strength of ready-mix concrete,however a positive effect on the later strength. The SAPs compensated the dry shrinkage of ready-mix concrete well which was beneficial to reduce the dry cracks. Moreover,the pavement application effects of internal curing ready-mix concrete,expansive concrete and ordinary concrete were compared under high tempera-ture environment. It turned out that the internal curing ready-mix concrete performed well,however the expansive concrete and the ordi-nary concrete both had different degrees of cracking,which proved that the internal curing technique was efficient to reduce the dry shrinkage and cracks of commercial concrete.