前言普通水泥混凝土在硬化过程中,由于干燥收缩而产生裂纹,这是一百多年来未能解决的难题。近二十年来研究表明用膨胀水泥制备的补偿收缩混凝土和自应力混凝土是减少收缩防止裂纹,提高抗渗性的一个有效途径。 Foreword Common cement concrete cracks due to drying shrinkage during the hardening process. This is a difficult problem that has not been solved for over a hundred years. In the past two decades, studies have shown that the use of expansion cement made of shrinkage-reduced concrete and self-stressed concrete is an effective way to reduce shrinkage cracks and improve impermeability.