CAJ | 학술논문

对双膨胀中热水泥混凝土的自生体积变形以及在钢筋约束下的膨胀应力进行了试验．结果表明：用双膨胀中热水泥拌制的混凝土不仅能产生早期膨胀，也能产生后期膨胀，在约束条件下能产生预压应力，可以比较有效地补偿大坝等大体积混凝土的收缩，增强其抗裂能力，从而提高工程的整体性、安全性和耐久性．结果还表明：双膨胀中热水泥在推迟钙矾石膨胀、加快方镁石膨胀以及提高总的膨胀量等方面，值得继续研究．
대쌍팽창중열수니혼응토적자생체적변형이급재강근약속하적팽창응력진행료시험．결과표명：용쌍팽창중열수니반제적혼응토불부능산생조기팽창，야능산생후기팽창，재약속조건하능산생예압응력，가이비교유효지보상대패등대체적혼응토적수축，증강기항렬능력，종이제고공정적정체성、안전성화내구성．결과환표명：쌍팽창중열수니재추지개반석팽창、가쾌방미석팽창이급제고총적팽창량등방면，치득계속연구．
Double-expansive moderate heat Portland cement contains both ettringite and periclase ex-pansive sources. In this paper, the autogenous volume deformation and prestress of the concrete pre-pared with this cement were tested. The results show that concrete prepared with double-expansivemoderate heat Portland cement has both the early and the late expansion, and can produce prestresswhen restricted, therefore may compensate the shrinkage of massive concrete projects, dams for exam-ple, and hence improve their security, durability. The results also show that the double-expansivemoderate heat Portland cement should be further studied and improved to retard its ettringite expan-sion, accelerate its periclase expansion and increase its total expansion magnitude.