不同钡掺量硫铝酸钡钙矿物结构及其水化

删除或更新信息，请邮件至freekaoyan#163.com(#换成@)

本站小编 Free考研考试/2024-01-16

闂佺粯鍔楅幊鎾诲吹椤斿墽鍗氶悗锝庝簻缁侇噣鏌熼崗鑲╃煂闁稿矉鎷�2婵炴垶鎸稿ú銊╋綖閹烘鍤€闁告劦浜為崺锟犳煟閵忋倖娑ч柣鈩冪懇閹囧醇閿濆洢鍋掗梺鍝勫€归悷杈╂閿燂拷
婵犮垹鐖㈤崶褍濮ら梺鍛婂笒濡盯顢旈姀銈嗩棄閻庯綆鍠栭崢鎾煛閸曢潧鐏ｆい鎴濇处缁嬪鍩€椤掆偓閳诲酣妾遍柍褜鍓欓崯浼存偉濞差亝鏅悘鐐电摂閸ょ姴霉濠婂啴顎楁い鈹嫭濯撮柡鍥╁枔閸欌偓闂佸綊娼цぐ鐐电箔閹惧鈻旀慨妯诲墯閸わ箓鏌熺粙鎸庢悙闁伙綁绠栧顐⑩枎閹邦厾绋勯梺鎸庣☉閺堫剟宕归妸褎濯奸柛娑橈攻缁犳帞鈧灚婢橀悧鍡浰囬崸妤佸仾闁硅揪闄勯敍鏍煏閸℃洖顣╮ee婵犮垹缍婇埀顒佺⊕閵嗗啴鏌涢幒鎴烆棞妞ゆ帞鍠愮粙濠囨偐閻㈢數效闂佸吋婢橀崯浼存偉閸濆媱搴㈡綇椤愮喎浜鹃柡鍥ㄦ皑閻熲晛鈽夐幘缈犱孩妞ゆ洝娅曞ḿ蹇涘川椤撗冩20濡ょ姷鍋犻幓顏嗘濠靛绠戦柤濮愬€楀▔銏犆瑰⿰鍐╊棥缂佸顕埀顒€婀遍崑鐔煎极閵堝鍎嶉柛鏇ㄥ墮閻﹀綊鎮楃憴鍕暡闁哄棌鍋撻梺鍝勵槹閸旀牠鎮￠敍鍕珰闁靛繆鍓濋悡娆愮箾婢跺绀€鐎殿噣鏀卞鍕吋閸曨厾妲戦梺鍝勫€介～澶屾兜閸洘鏅悘鐐靛亾缁犳帡姊婚崶锝呬壕闁荤喐娲戦懗璺衡枔閹达附鍎戦悗锝庡幘缁犳牠鏌℃径娑欏

-->

尚小朋,常钧,房延凤,张洋洋.不同钡掺量硫铝酸钡钙矿物结构及其水化[J].,2017,57(2):142-147

不同钡掺量硫铝酸钡钙矿物结构及其水化

Mineral structure and hydration of calcium barium sulphoaluminate with different barium mixing amounts

DOI：10.7511/dllgxb201702005

中文关键词:硫铝酸钡钙矿物钡掺量 Ba 2+ 利用率晶面间距水化

英文关键词:calcium barium sulphoaluminate mineral barium mixing amount Ba 2+ utilization percentage interplanar crystal spacing hydration

基金项目:国家自然科学基金资助项目(51472041).

作者	单位
尚小朋,常钧,房延凤,张洋洋

摘要点击次数:1207

全文下载次数:1352

中文摘要:

通过Ba 2+ 取代硫铝酸钙(C 4A 3 AS-U )矿物中的Ca 2+ 制备出胶凝性能优良的硫铝酸钡钙(C 4- x B x A 3 AS-U )矿物．选取了19个不同钡掺量的生料，在1 400 ℃条件下保温3 h 烧成不同的C 4- x B x A 3 AS-U 矿物，并分析了钡掺量对C 4- x B x A 3 AS-U 水化性能的影响．通过XRD Rietveld全谱拟合方法对熟料中的矿物种类和含量进行定量计算，并对C 4- x B x A 3 AS-U 的晶体结构进行精修，分析了C 4- x B x A 3 AS-U 中的实际钡含量和Ba 2+ 利用率．结果表明，随着钡掺量的增加， C 4- x B x A 3 AS-U 的含量先增加后减少，在钡掺量为0.6 mol时达到最大，C 4- x B x A 3 AS-U 的含量为93.2%．C 4- x B x A 3 AS-U 矿物中的实际钡含量和Ba 2+ 利用率均随钡掺量的增加呈现出先增加后减少的趋势，钡掺量在0.4 mol时合成了C 3.61 B 0.39 A 3 AS-U ，Ba 2+ 利用率达到97.5%．并且随着钡掺量的增加C 4- x B x A 3 AS-U 的晶面间距逐渐增大．C 4- x B x A 3 AS-U 水化后的抗压强度随着钡掺量的增加逐渐增大，但当钡掺量超过1.4 mol时，由于膨胀导致强度下降，最终试块胀裂．

英文摘要:

C 4- x B x A 3 AS-U mineral with excellent gelling property can be prepared by replacing the Ca 2+ in C 4A 3 AS-U mineral with Ba 2+ . Raw materials with 19 different barium mixing amounts are sintered in condition of 1 400°C for 3 h to get different C 4- x B x A 3 AS-U minerals and the effect of barium mixing amounts on hydration performances of C 4- x B x A 3 AS-U minerals is investigated. Quantitative calculation of mineral species and content of clinkers and C 4- x B x A 3 AS-U minerals crystal structure refinement are performed by XRD Rietveld whole pattern fitting. Actual barium amounts in C 4- x B x A 3 AS-U minerals and Ba 2+ utilization percentage are analyzed. Experimental results show that C 4- x B x A 3 AS-U content firstly increases and then decreases with increasing barium mixing amount, and when barium mixing amount is 0.6 mol, C 4- x B x A 3 AS-U mineral content arrives maximum (93.2%). Actual barium amount and Ba 2+ utilization percentage firstly increase and then decrease with increasing barium mixing amount, and when barium mixing amount is 0.4 mol, C 3.61 B 0.39 A 3 AS-U is prepared and the Ba 2+ utilization percentage is 97.5%. With the increasing of barium mixing amount, the interplanar crystal spacing of C 4- x B x A 3 AS-U minerals increases gradually. The compressive strength of C 4- x B x A 3 AS-U after hydration increases with increasing barium mixing amounts, however, it decreases when barium mixing amount is more than 1.4 mol due to the expansion, and finally cracks are observed.

查看全文查看/发表评论下载PDF阅读器

关闭

不同钡掺量硫铝酸钡钙矿物结构及其水化

本站小编 Free考研考试/2024-01-16

相关话题/

领限时大额优惠券,享本站正版考研考试资料!