This paper mainly illustrates how the supervision engineers should exercise their effective quality control over the commercial concrete used for the shengmi bridge from aspect of determining the producers , suppliers , and supervising the process of production , transportation and casting of the concrete 摘要主要叙述监理工程师如何从商品混凝土生产厂家的选用，商品混凝土生产过程，运输过程，浇筑过程的质量进行有效控制。
It is very efficient in dealing with the data by the fuzzy cluster analysis program which is compiled with fortran77 . the author concludes that the theory of fuzzy cluster analysis can be applied to the quality control work of concrete production with the program analyzing the experiment data and the method of fuzzy cluster analysis contributes to the quality control work of rmc production 利用fortran77语言编写出了模糊聚类分析的计算机程序，实现了分析研究过程的电算化，大大提高了工作效率；运用该程序实现了对试验室数据的分析研究，得出了模糊聚类分析理论适用于混凝土质量控制工作的结论；并将该程序进一步应用于商品混凝土的实际生产中，初步得出了模糊聚类分析方法有助于混凝土搅拌站实现对混凝土生产的质量控制。
This thesis investigated and researched on non - loaded crack , especially those caused by thermal - shrink , and analyzed the thermal - shrink stress of beam , slab and continuous - wall , found that according data of civil and overseas offered thermal - shrink calculating formula without considering effect of factors , such as the cement quantity , using of aruhuesiru , aggregate size and quantity of sand , which made the result data smaller . in addition , there are not enough construct measure in code 本文对非荷载裂缝，特别是温度?收缩裂缝进行了调查研究，并对两端或四周约束的梁、板和底部约束的地下连续墙进行了收缩应力分析，发现国内外有关文献给出的收缩计算公式没有考虑泵送商品混凝土的水泥用量、外加剂使用、骨料粒径和砂用量等因素的影响，计算出的混凝土收缩量往往偏小；另外， 《规范》中针对温度?收缩裂缝的构造措施不足。
Ready - minxed concrete mixing plant is the domestic leading level commercial mixing plant that our company have digested in the absorption to international advanced mixing technology , main component and part purchase is internationalizationed , the main transmission and transportation part use domestic well - known brand product , the main component and part replancement period is short , the maintenance is economy and simple 商品混凝土搅拌站是我公司在吸取消化了国际先进搅拌技术的基础上设计开发的具有国内领先水平的商用搅拌站，主要零部件国际化采购，主要传动及输送部件使用国内知名品牌产品，整个搅拌站零部件更换周期短、维护经济简便。
Now for a long time , it has been very popular lhat the cracks from the cornmodity concrete and high shump concrete appear during constructions . in addition , the thermal release speed of the cement is comparatively much fester than that in the past , causing the problem of the thermal crack in the mass concrete rnore serious 目前建筑施工中普遍使用的商品混凝土和大坍落度混凝土的开裂现象一直比较普遍，加之现在所生产的水泥放热速度较过去大为提高，这使得大体积混凝土的温度裂缝问题日益突出，已成为普遍性的问题。
