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>发布日期åQ?023-01-09 ä½œè€?a href="http://www.designwasp.com/">åQšæ²³åŒ—双æ˜?/a>  </span></p> <div> <p> ¾_‰ç…¤çîC½œä¸ÞZ¸€¿Uååˆ†å¸¸è§çš„矿物掺合料,其质量差别很大,¾lå¸¸æœ‰åŠ£è´¨ç²‰ç…¤ç°æ··å…¥åQŒç»™ç”Ÿäñ”和质量控制带来麻烦ã€? </p> <p>çŽîC»Šå¸‚场劣质¾_‰ç…¤çîC¸»è¦åŒ…括:原状¾_—灰、磨¾l†ç²‰ç…¤ç°ã€è„±¼‹«ç²‰ç…¤ç°ã€è„±¼‹ç²‰ç…¤ç°ã€æÕQ黑粉煤灰、掺假粉煤灰½{‰ã€‚劣质粉煤灰的ä‹É用易å¯ÆD‡´æ··å‡åœ?8d强度不èƒöåQŒåŽæœŸå¼ºåº¦å¢žé•¿ä½ŽåQŒé€ æˆæ··å‡åœŸå·¥½E‹è´¨é‡ä¸åˆæ ¼ã€? </p> <p>试验分析åQ? </p> <p>水惔是常规硅酸盐水惔åQŒå¯†åº?.1g/cm3åQ›ç ‚子是中砂FM=2.6åQŒå¯†åº?.54g/cm3åQŒå«æ³¥é‡åœ?%以下åQ›æ²³åëŠŸ³¾_’径最大值是31.5mmåQŒå¯†åº?.53g/cm3åQ›å¤–加剂包括引气剂与减水剂ã€? </p> <p>¾_‰ç…¤ç°æ˜¯åŒ–工厂等外原状粉煤灰、发电厂II¾U§åŽŸçŠ¶ç²‰ç…¤ç°ä¸Žå‘电厂II¾U§ç£¨¾l†ç²‰ç…¤ç° </p> <p>混凝土性质‹¹‹éªŒæ ÒŽ®ã€Šæ°´å·¥æ؜凝土试验规程》(SD105åQ‰ä¸­ç›¸åº”的标准开展ã€? </p> <p> 混凝土迅速冻融测验:选择国äñ”全自动æ؜凝土快速冻融测验机åQŒä¾ç…§ASTCM666指标开展快速冻融åó@环测验。一‹Æ¡æ€§å†»èžåó@环的旉™—´å¤§çº¦æ˜?håQŒè¯•ä»¶ä¸­å¿ƒæ¸©åº¦å…è®¸æ”¹å˜èŒƒå›´æ˜¯-17.5ï½?.0℃ã€? </p> <p>¾_‰ç…¤ç°è´¨é‡ä¸åŒï¼Œä½†æ؜凝土配合比一è‡ß_¼Œæ··å‡åœŸæŠ—压强度的大小同样存在差异åQŒä¸»è¦æ˜¯å› äؓ¾_‰ç…¤ç°çƒ§å¤±é‡ä¼šåœ¨å¾ˆå¤§½E‹åº¦ä¸Šåª„响æ؜凝土抗压强度½{‰çñ”。等外原状灰、II¾U§ç£¨¾l†ç°ã€II¾U§åŽŸçŠ¶ç°çƒ§å¤±é‡åˆ†åˆ«æ˜¯28.2%ã€?.24%ã€?.6%。而掺优质¾_‰ç…¤ç°èƒ½è®©æ؜凝土中水分减ž®?5ï½?0%/m3åQŒåŠ£è´¨ç°èƒ½è®©æ··å‡åœŸä¸­æ°´åˆ†å¢žåŠ 20ï½?5%/m3åQŒå› æ°´èƒ¶æ¯”发生了变化åQŒå¯¼è‡´æ؜凝土抗压强度½{‰çñ”产生极大的变化ã€? </p> <p>劣质¾_‰ç…¤ç°çš„品质发生变化的原因分析及å¯ÒŽØœå‡åœŸæ€§èƒ½çš„媄å“? </p> <p>åQ?åQ‰ç²—灰性质改变的原因研½I¶ã€‚原状粗çîC¸»è¦æ˜¯ç”Þq«åŠ›å‘电厂没有˜q›è¡Œåˆ†é€‰ï¼Œä½†æŽ’到干灰库或湿排,˜q›è€Œå­˜å‚¨åœ¨æ²‰ç°æ± å†…的粉煤灰¾cÕdž‹åQŒå…¶è¡¨å±‚光滑性较差,¾l†åº¦é€šå¸¸åQ?5%åQŒçƒ§å¤±é‡åQ?5%åQŒæ´»æ€§æŒ‡æ•ŽÍ¼œ60%。如今,常常ž®†æ­¤å½“作水惔混合建材ã€? </p> <p>åQ?åQ‰å¯¹æ··å‡åœŸæ€§è´¨å½±å“çš„分析。因为原状粗灰筛余量相对较大åQŒå…¶ä¸­å«æœ‰è¾ƒå¤šæ‚质,烧失量相对较大,因此实际效果òq¶ä¸èƒ½å¾—到很好地体现。鉴于此åQŒç”¨å…¶æ‰€åˆ¶æˆçš„æ؜凝土不具备理想的‹¹åŠ¨æ€§ï¼Œä¿æ°´æ€§ä¸Žè–ªèšæ€§ä¸½W¦åˆè¦æ±‚åQŒä¼šå¯ÒŽ–°æ‹Œæ؜凝土的质量造成极大的媄响;ç”׃ºŽéœ€æ°´é‡å¤ªå¤§åQŒä¼šå¯ÆD‡´å•ä½ä½“积混凝土的实际用水量超˜q‡é¢„计用水量åQŒè¿›è€Œä‹É水胶比升高,不但会ä‹É抗压强度½{‰çñ”出现减小的情况,˜q˜ä¼šä½¿ç¡¬åŒ–æ؜凝土的耐久性被严重弱化ã€? </p> <p>åQ?åQ‰ç»†ç°æ€§è´¨å‡ºçŽ°å˜åŒ–的原因研½I¶ã€‚磨¾l†ç²‰ç…¤ç°¾l†è‡´å€ŸåŠ©åºŸå¼ƒåŽŸçŠ¶¾_—灰åQŒé€‰æ‹©¾_‰ç£¨åŠ å·¥çš„方式,˜q›è€Œå¾—到再生粉煤灰。相较于原状¾_—灰来说åQŒç£¨¾l†ç²‰ç…¤ç°45μm½{›ä½™é‡æ›´ž®‘,òq¶ä¸”‹zÀL€§ç›¸å¯¹è¾ƒå·®ã€‚而在化学成分上来è¯ß_¼Œ¼‚¨ç»†¾_‰ç…¤ç°å…¶å®žå’Œä¼˜è´¨¾_‰ç…¤ç°åƈ不存在明昄¡š„不同åQŒå¯æ˜¯ä¸¤è€…的物理性质却存在很大的不同åQŒä¼šä½¿æ؜凝土的所有性质发生极大的变化ã€? </p> <p>åQ?åQ‰å¯¹æ··å‡åœŸæ€§è´¨æ‰€é€ æˆçš„媄响分析。相较于优质¾_‰ç…¤ç°è€Œè¨€åQŒå› ä¸ºç£¨¾l†ç²‰ç…¤ç°çš„碳含量与杂质含量相对较大,能更好地吔R™„水与各种外加剂,光™¢—¾_’大部分是表层光滑性较差的半球形颗¾_’碎片,球åŞ微珠的润滑性åƈ不理惻I¼Œé‰´äºŽæ­¤ï¼Œå€˜è‹¥æŽºé‡ä¸€è‡ß_¼Œå…¶æ–°æ‹Œæ؜凝土的流动性能˜q˜æ˜¯ä¼šç›¸å¯¹è¾ƒä½Žï¼Œ¾læ—¶ä¼šå­˜åœ¨éžå¸æ€¸¥é‡çš„损耗,˜q›è€Œä¸¥é‡åª„响æ؜凝土灌筑施工ã€? </p> <p>åQ?åQ‰è„±¼‹«ç²‰ç…¤ç°æ€§è´¨å‡ºçŽ°å˜åŒ–的原因研½I¶ã€‚关键性的原因其实ž®±æ˜¯å› äؓè„Þq¡«æŠ€æœ¯æ‰€å¯ÆD‡´çš? </p> <p>åQ?åQ‰ç‡ƒçƒ§è„±¼‹«ï¼Œ¾pÀLŒ‡æŠŠçŸ³ç°çŸ³¾_‰å½“成是è„Þq¡«å‰‚,在燃煤炉膛燃烧室上部˜q›è¡Œå–·åˆ·åQŒä¹‹åŽçŸ³ç°çŸ³¾_‰å°±ä¼šç«‹å³ç‡ƒçƒ§ï¼Œ˜q›è€Œäñ”生CaOåQŒè€Œæ°§åŒ–钙又和SO2产生反应åQŒäñ”生CaSO3、CaSO4ã€? </p> <p>åQ?åQ‰çƒŸæ°”脱¼‹«ï¼ŒçƒŸæ°”è„Þq¡«å…¶å®žž®±æ˜¯åœ¨ç‡ƒçƒ§ç”Ÿæˆçš„烟气到脱¼‹«è®¾å¤‡æ¹¿å¼å¸æ”¶å¡”之后åQŒé€‰æ‹©CaåQˆOHåQ?当成是脱¼‹«å‰‚åQŒè¿›è€Œåœ¨å¸æ”¶å¡”中对烟气中的SO2从上åˆîC¸‹˜q›è¡ŒçŸ³ç°‹¹†æ¶²çš„å–·‹z’,˜q™å°±ä¼šå¯¼è‡´SO2和CaåQˆOHåQ?雾滴以逆流的åŞ式进行接触,˜q›è€Œä¸¤è€…äñ”生反应,反应产物是CaSO3、CaSO4ã€?H2O。CaSO4å’?H2O会发生反应,产物是二水硫酔R’™æ™¶ä½“åQŒåƈ且脱水处理后åQŒå¯èŽ·å¾—CaSO4·2H2OåQŒä¹Ÿž®±æ˜¯ç”ŸçŸ³è†ï¼Œå¦‚æ­¤ž®Þpƒ½å®Œæˆå«ç¡«çƒŸæ°”的有效治理ã€? </p> <p>åQ?åQ‰å¯¹æ··å‡åœŸæ€§è´¨æ‰€é€ æˆçš„媄响分析。脱¼‹«ç²‰ç…¤ç°ä¸­çš„关键性成分是亚硫酔R’™åQŒèƒ½¾~“凝水惔åQŒå› æ­¤ä¼šå½±å“æ··å‡åœŸçš„凝结旉™—´åQŒåŠ å¤§æ؜凝土凝结的难度ã€? </p> <p>åQ?åQ‰è„±¼‹ç²‰ç…¤ç°å“è´¨è¢«æ”¹å˜çš„原因研究。脱¼‹çŽ¯èŠ‚结束后åQŒå‰©ä¸‹çš„è„Þq¡å‰‚会形成的NH4ç”׃ºŽ¾_‰ç…¤ç°é¢—¾_’的存在åQŒä¼šè¢«å¸é™„至½Iø™…”中,若环境中的水分相对较多,NH4和CO2会äñ”生反应,产物是(NH4åQ?CO3,¼„³é…¸é’׃¼š¾l§ç®‹ååº”åQŒäñ”物是NH4HCO3。而在36℃的条äšg下,¼„³é…¸æ°¢é’ ž®×ƒ¼š˜q›è¡Œåˆ†è§£ååº”åQŒäñ”物是NH3、CO2与H2OåQŒæ°}气味ž®±æ˜¯˜q™æ ·å½¢æˆçš„ã€? </p> <p>åQ?0åQ‰å¯¹æ··å‡åœŸæ€§è´¨æ‰€é€ æˆçš„媄响分析。假若选择è„Þq¡¾_‰ç…¤ç°è¿›è¡Œæ؜凝土的制备,拌合物表层常å¸æ€¼šå‡ºçŽ°ä¸°å¯Œçš„气泡,òq¶ä¸”氨气味也会出现。若把不同电厂的è„Þq¡¾_‰ç…¤çŽÍ¼Œä¾ç…§10%ã€?0%ã€?0%ä¸?0%的比例加入到水惔里,ž®×ƒ¼šä½¿æ°´æ³¥å‡¾l“时间增加,使水泥早期强度等¾U§å‡ž®ï¼Œòq¶ä¸”会由于粉煤灰掺量的增多,出现显著的强化现象ã€? </p> <p>åQ?1åQ‰æÕQ黑粉煤灰性质出现改变的原因研½I¶ã€‚火力电厂要想ä‹É燃煤技术得到改善,在燃煤时加入柴æÑa或其他æÑa性物体当成是助燃剂。但˜q™äº›åŠ©ç‡ƒå‰‚åƈ不能å½Õdº•˜q›è¡Œç‡ƒçƒ§åQŒå› æ­¤å°±ä¼šåœ¨¾_‰ç…¤ç°å†…出现ŒD‹ç•™åQŒè¿™ä¹Ÿå°±æ˜¯æÕQ黑粉煤灰ã€? </p> <p>åQ?2åQ‰å¯¹æ··å‡åœŸæ€§è´¨æ‰€é€ æˆçš„媄响分析。假若选择‹¹®é»‘¾_‰ç…¤ç°è¿›è¡Œæ؜凝土制作åQŒæ‹Œåˆç‰©è¡¨å±‚会出现很多黑色æÑa状物åQŒç¡¬åŒ–环节结束后åQŒæ؜凝土构äšg表层会äñ”生不规则黑斑åQŒè¿›è€Œä‹É构äšg外观出现很大的缺陗÷€‚在构äšg抹灰或装饰板块粘贴的˜q‡ç¨‹ä¸­ï¼Œç”šè‡³ä¼šä‹É砂浆和基层、砂‹¹†å’Œæ¿å—¾_˜ç»“效果不理惟ë€? </p> <p>åQ?3åQ‰æŽºå‡ç²‰ç…¤ç°å“è´¨è¢«æ”¹å˜çš„原因研究。粉煤灰厂商ä¸ÞZº†èƒ½æå‡è‡ªå·Þqš„¾læµŽæ•ˆç›ŠåQŒåœ¨¾|èžR上部安设满èƒö质量条äšg的粉煤灰åQŒç½è½¦ä¸­ã€åº•éƒ¨è£…入质量相对较差的¾_‰ç…¤çŽÍ¼›æ­¤å¤–åQŒåœ¨ç‡ƒç…¤ç”µåŽ‚采购¾_‰ç…¤çîC¹‹åŽï¼Œèƒ½æ·»åŠ çŸ³ç°çŸ³ã€ç…¤æ¸£ã€ç‚‰æ¸£ç­‰åQŒä¸æ–­ç£¨¾l†ï¼Œæœ€¾lˆä»¥ä¼˜è´¨¾_‰ç…¤ç°çš„形式卖出ã€? </p> <p>åQ?4åQ‰å¯¹æ··å‡åœŸæ€§è´¨æ‰€é€ æˆçš„媄响分析。掺假粉煤灰因äؓ成分非常多,òq¶ä¸”混合的均匀性非常差åQŒå¯¹æ–°æ‹Œæ··å‡åœŸæ€§è´¨æ‰€é€ æˆçš„媄响程度非å¸æ€¸½E›_®šã€‚如此就会导致新拌æ؜凝土质量的管控工作非常困难,评估¼‹¬åŒ–混凝土性能的工作也非常隑ּ€å±•ã€? </p> <p>¾lég¸Šæ‰€˜qŽÍ¼Œå› äؓ¾_‰ç…¤ç°çš„多元化与复杂化趋势,预拌混凝土的施工人员与技术äh员务必掌握各¿UåŠ£è´¨ç²‰ç…¤ç°å“è´¨å‡ºçŽ°æ”¹å˜çš„根本原因与å¯ÒŽØœå‡åœŸæ€§è´¨äº§ç”Ÿå½±å“çš„各¿Uåª„响,借助¿U‘学的检验方式,能ä‹É劣质¾_‰ç…¤ç°çš„实际˜qç”¨å¾—到有效抑制åQŒä‹É混凝土质量得到有效保éš? </p> <br><br><img src="http://www.designwasp.com/19xw/jbz106.jpg" alt="沛_Œ—双星混凝土搅拌站讑֤‡" width="100%" ><br>     上图沛_Œ—双星混凝土搅拌站讑֤‡ <br><br><img src="http://www.designwasp.com/201812/jiaobanzhan%20(17).jpg" alt="沛_Œ—双星混凝土搅拌站讑֤‡" width="100%"><br>     上图沛_Œ—双星混凝土搅拌站讑֤‡ <br><br> <p> </div> <p></p> <div class="kk2"><img src="../kk2.jpg" width="1" height="11"></div> <p>如果想了解更多详情可以登录河åŒ?a href="../index.html">双星</a>官网åQ?a href="http://www.designwasp.com">www.designwasp.com</a>åQŒæ¬¢˜qŽæ–°è€ç”¨æˆ·å…‰ä¸´é€‰è´­ <p class="writings"><span>2022-08-06</span>上一½‹?<a href="http://www.designwasp.com/gongsixinwen/220806.html">混凝土搅拌站混凝土配合比调整‹¹ç¨‹è¯¦è¿°</a></p> </div> </div> <a href="http://www.designwasp.com/">ÍøÉÏ¿ìÈý¼Æ»®</a> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = 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