论文部分内容阅读
一、2011年度膨胀混凝土行业综合状况1.膨胀剂行业我国膨胀剂行业虽然经过二十多年的发展,但尚未摆脱产品技术水平较低、市场比较混乱的状况。国内现有生产膨胀剂的企业近百家,膨胀剂(含膨胀型防水剂)年销售量约200万吨。其中年销售量上万吨的企业约有20家,其销售量约占总量的60%,这些企业大多生产检验程序完善,能够按照标准生产。图1、图2和图3是2011年我国混凝土
First, the overall situation of the industry in 2011 Expansion of concrete 1. Expanders industry Although China’s expander industry after more than two decades of development, but not yet out of low-tech products, the market more chaotic situation. There are nearly 100 domestic enterprises producing expansion agent, and the annual sales volume of expansion agent (including intumescent waterproof agent) is about 2 million tons. One of the annual sales of tens of thousands of tons of about 20 companies, whose sales account for about 60% of the total, most of these enterprises production inspection procedures to improve, in accordance with the standard production. Figure 1, Figure 2 and Figure 3 is China’s concrete in 2011