对混凝土坝进行表面保温,是防止混凝土表面产生裂缝的重要措施之一。龄期较短的混凝土,由于水泥水化热的散发,其内部温度较高,遇到气温骤降,极易产生裂缝。在寒冷地区,即使是龄期较长的混凝土,过冬时若不注意表面保温,仍会产生表面裂缝。通过一些调查和试验,表明水泥膨胀珍珠 Concrete dam surface insulation is to prevent cracks in the concrete surface one of the important measures. Short-term concrete, due to the hydration of cement hydration, its internal temperature is higher, encountered a sudden drop in temperature, prone to cracks. In cold areas, surface cracks can occur even if the concrete is of a longer age than the surface insulation during winter. Through some investigations and experiments, it shows that cement expanded pearl