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2004年,随着国家宏观调控各项政策措施的逐步见效,我国基建投资拉动力度有所减缓,建筑工程预拌混凝土年产量的递增率回落到2001年的水平(递增率,2001年:36%;2002年:41%;2003年:52%;2004年:36%),但仍保持较强劲的势头。2004年,各省市商品混凝土年产量的递增率参差不齐,江苏省为35.75%;浙江省为5.97%;北京市为40.64%;重庆市为79.04%。2004年,年产量超过1000万m3商品混凝土的城市已由原来5座增至6座,分别为上海(4276万m3/y)、北京(3623万m3/y)、苏州(1482万m3/y)、深圳(1345万m3/y)、广州(1337万m3/y)和杭州(1249万m3/y)。按产量排序,前10位的省市为1.上海(4276万m3/y)、2.江苏(4074万m3/y)、3.广东(4011万m3/y)、4.北京(3623万m3/y)、5.浙江(2229万m3/y)、6.山东(1506万m3/y)、7.辽宁(1157万m3/y)、8.天津(1121万m3/y)、9.重庆(775万m3/y)、10.安徽(678万m3/y)。2004年,我国水泥产量为9.34亿吨,年递增率有所减缓,为8.6%。按产量排序,前5位的省份为山东、浙江、江苏、河北、广东。首位山东省的年产量达1.13亿吨。从科学发展观的角度,应更加注意商品混凝土的科技进步和不断提高科技成果的转化率。特别注重混凝土外加剂和以磨细矿渣(粉煤灰)为代表的掺合料的实用技术的研制与应用,大力发展绿色高性能(更注重?
In 2004, with the phasing out of various national macro-control policies and measures, China's capital construction investment slowed down. The annual growth rate of construction ready-mixed concrete dropped to the level of 2001 (incremental rate: 2001: 36% ; 2002: 41%; 2003: 52%; 2004: 36%), but still maintained a relatively strong momentum. In 2004, the increment rate of annual output of commercial concrete in various provinces and cities was uneven, with 35.75% in Jiangsu Province, 5.97% in Zhejiang Province, 40.64% in Beijing and 79.04% in Chongqing. In 2004, the number of cities with annual production of more than 10 million m3 of commercial concrete increased from 5 to 6, respectively, in Shanghai (42.76 million m3 / y), Beijing (36.23 million m3 / y) and Suzhou (14.82 million m3 / y ), Shenzhen (13.45 million m3 / y), Guangzhou (13.37 million m3 / y) and Hangzhou (12.49 million m3 / y). According to the output, the top 10 provinces and municipalities are 1. Shanghai (42.76 million m3 / y), Jiangsu (40.74 million m3 / y), Guangdong (40.11 million m3 / y), Beijing (36.23 million m3 / y) m3 / y), 5. Zhejiang (22.29 million m3 / y), 6. Shandong (15.06 million m3 / y), Liaoning 11.57 million m3 / y, Tianjin 11.21 million m3 / y, Chongqing (7.75 million m3 / y), 10. Anhui (6.78 million m3 / y). In 2004, China's cement output was 934 million tons, with an annual slowdown of 8.6%. According to the production order, the top 5 provinces are Shandong, Zhejiang, Jiangsu, Hebei and Guangdong. The first Shandong Province has an annual output of 113 million tons. From the point of view of scientific development, we should pay more attention to the scientific and technological progress of commodity concrete and continuously improve the conversion rate of scientific and technological achievements. Special attention to concrete admixtures and grinding slag (fly ash) as the representative of the admixture of the development and application of practical technology, and vigorously develop the green high-performance (pay more attention to?