基于生命周期的水泥工业碳中和整体路径

The Probe of Modern Academic Starting Point of the Construction of New Liberal Arts and Its Enlightenment——Take Liang Qichao and Chinese Academic History of Recent 300 Years as an Example

从自然界的碳循环、大气中温室气体浓度变迁、温室效应与全球变暖的基本原理出发,探讨水泥工业碳足迹与碳中和路径。水泥工业碳酸钙分解和水泥烧成、粉磨、运输等过程化石原料燃烧产生的CO;导致了大气中CO;浓度的增加,在人类活动碳排放中占8%左右。我国水泥工业生命周期碳足迹中碳酸钙分解占54%左右,燃料燃烧占28%左右,电力排放占9%,水泥工业的运输占2.33%,混凝土工业运输的碳足迹占5.61%,而混凝土制备碳只占0.86%。硅酸盐水泥的碳足迹中有29.64%的CO;在100年之内被混凝土吸收。从整体观出发的碳中和路径看,水泥工业碳中和提升了整个社会的碳中和水平,也依赖于全社会资源能源使用效能、社会可持续发展、城市智慧化、建筑科技以及水泥基材料科技的革新。

The beginning is the source and the starting point of the development of things, it determines the future development direction of things. At present, the construction of “the New Liberal” in our country aims at creating a new Chinese modernity, which is an essential component of the direction of the world modernity, and the academic education of Chinese modernity is the key element that influences the developmental direction of China’s own educational modernity. From the background of the late Ming and early Qing dynasties, we explore the writing of Liang Qichao, who is a typical example of the beginning academic construction activities of modern Chinese education, the purpose of this study is to explore Liao Qichao’s pursuit of writing and teaching Chinese Academic History of Recent 300 Years and its implications for the construction of the “new liberal arts” in China, which includes the following three points. The first point is to form our modern time concept in the face of the West, so as to re-understand the characteristics and spirit of ancient Chinese liberal arts in the collision with modern western scientific and technological civilization. The second is to deepen how to absorb and learn from western modern scientific and technological civilization while supplementing it with Chinese liberal arts. The third is to trace the modern academic starting point of our “new liberal arts” construction, that is, how the modern academic path of education, led by Liang Qichao and others, can be inherited and carried forward at present.