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发表于 2012-03-26 16:08
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一)建筑原材料þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·1.胶凝材料þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·(1)水硬性胶凝材料þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·了解:水泥定义、分类;水泥的生产原料及工艺;水泥的熟料矿物组成及特性;水泥凝结硬化的过程和机理;硫铝酸盐水泥、铝酸盐水泥等其它系列水泥的定义、主要技术性质及应用范围;通用水泥、专用水泥、特性水泥的品种及用途。影响试验的主要因素及在试验过程中的注意事项。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·水泥定义、分类:þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·①硅酸盐水泥:硅酸盐水泥熟料中掺入0%~5%的石灰石或粒化高炉矿渣等混合料,以及适量石膏混合磨细制成的水泥。其中完全不掺加混合料的称为I型,代号P·I;掺入量不超过5%的称为Ⅱ型,代号P·Ⅱ。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·②普通硅酸盐水泥:硅酸盐水泥熟料中掺入6%~15%的混合料及适量石膏加工磨细后得到的水泥,代号P·O。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·③矿渣水泥:硅酸盐水泥熟料中掺入20%~70%的粒化高炉矿渣和适量石膏加工磨细制成的水泥,代号P·S。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·④火山灰水泥:硅酸盐水泥熟料中掺入20%~50%的火山灰质材料和适量石膏加工磨细制成的水泥,代号P·P。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·⑤粉煤灰水泥:硅酸盐水泥熟料中掺入20%~40%的粉煤灰和适量石膏加工磨细制成的水泥,代号P·F。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·水泥熟料中加入石膏是用来调节水泥的凝结速度,石膏是水泥组成中必不可少的缓凝剂。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·外掺料所起的作用主要是增加水泥产量、降低生产成本的同时,改善水泥的品质,如降低水化热等。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·水泥定义:硅酸盐水泥是指以硅酸盐水泥熟料、适量石膏和混合材料共同磨细所得的各种水泥。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·水泥的生产原料:þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· 石灰石:GaOþÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· 粘土:SiO2、Al2O3、Fe2O3þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· 铁矿粉: Fe3O4þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·水泥熟料矿物组成及特性þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·性能指标þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 熟料矿物þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | C3SþÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | C2SþÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | C3AþÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | C4AFþÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 水化速率þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 快þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 慢þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 最快þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 快þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 凝结硬化时间þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 快þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 慢þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 最快þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 快þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 28d水化热þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 多þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 少þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 最多þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 中þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 强度þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 早期þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 高þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 低þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 低þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 低þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 后期þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 高þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 高þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 低þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | 低þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· | þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·经1700℃煅烧后磨细þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·熟悉:通用水泥(硅酸盐系列水泥)的主要技术指标:强度等级、细度、凝结时间、需水性、安定性、烧失量、不溶物、氧化镁、三氧化硫、碱含量、水化热;水泥的选用。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·细度:硅酸盐比表面积大于300m2/kg,其他80μm方孔筛不大于10%;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·凝结时间:初凝不早于45min,终凝:硅酸盐不迟于6.5h,其他10h;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·氧化镁不大于5%,压蒸安定性合格时,允许放宽到6%;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·三氧化硫含量不得超过3.5%,矿渣不得超过4%。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ· þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·掌握:硅酸盐系列水泥检验规则,取样方法、废品及不合格品的判定,对水泥出厂试验报告的要求、对水泥出厂交货与验收的规定;水泥的物理力学性能检测及评定方法(包括所用材料、仪器设备、试验步骤或程序、试验结果处理及评定);对试验室内温、湿度要求及养护制度要求。按标准对试验结果进行评定,编制和审核检测报告。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·硅酸盐系列水泥检验规则þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·编号:水泥出厂前按同品种、同强度等级编号和取样。袋装水泥和散装水泥应分别进行编号和取样。每一编号为一取样单位。水泥出厂编号按水泥厂年生产能力规定:þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·120万t以上,不超过1200t为一编号;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·60万t至120万t,不超过1000t为一编号;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·30万t至60万t,不超过600t为一编号;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·10万t至30万t,不超过400t为一编号;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·10万t以下,不超过200t为一编号þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·当散装水泥运输工具的容量超过该厂规定出厂编号吨数时,允许该编号的数量超过取样规定吨数。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·分割样品质试验:þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·①分割样试验每季度进行一次。可任选一个品种、标号。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·②分割样的品质试验结果必须符合水泥标准技术要求。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·③分割样取得后应立即进行试验。全部样品必须在一周内进行完毕。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·④当分割样试验结果有低于水泥的技术要求时,或28天抗压强度变异系数大于6%时,即应每季度进行二次;当仍有低于技术要求时,或变异系数大于6%时,则每月进行一次。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·⑤当分割样试验结果全部符合水泥标准技术要求时,方可恢复为每季一次。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·⑥增加试验时,一般应用同品种、标号的水泥。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·取样方法þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·取样应有代表性,可连续取,亦可从20个以上不同部位取等量样品,总量至少12kg。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·①自动取样器取样:将装置安装在尽量接近于水泥包装机的管路中,从流动的水泥流中取出样品,然后将样品放入洁净、干燥、不易受污染的容器中。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·②取样管取样:随机选择20个以上不同的部位,将取样管插入水泥适当深度,用大拇指按住气孔,小心抽出取样管。将所取样品放入洁净、干燥、不易受污染的容器中。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·③槽形管状取样器取样:当所取水泥深度不超过2m时,采用槽形管式取样器取样。通过转动取样器内管控制开关,在适当位置插入水泥一定深度,关闭后小心抽出。将所取样品放入洁净、干燥、不易受污染的容器中。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·废品及不合格品的判定þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·凡游离氧化镁、三氧化硫、初凝时间、安定性中任一项指标不符合规定,均判为废品水泥,严禁在工程中使用;þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·凡细度、终凝时间、不溶物和烧失量中任一项指标不符合规定,或混合料掺入量超过最大限量和强度低于商品强度等级指标时,判为不合格水泥。当水泥包装标志中水泥品种、强度等级、生产者名称和出厂标号不全的也属于不合格品。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·对水泥出厂试验报告的要求、对水泥出厂交货与验收的规定þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·试验报告内容应包括本标准规定的各项技术要求及试验结果,助磨剂、工业副产石膏、混合材料的名称和掺加量,属旋窑或立窑生产。当用户需要时,水泥厂应在水泥发出之日起7天内寄发除28天强度以外的各项试验结果。28天强度值,应在水泥发出之日起32天内补报。þÆð¡^éñbbs.3c3t.comãÍ,=RVÝ·
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