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建筑材料学报 2024年第7期27卷 596-603页

作者：班加星陆建鑫潘智生香港理工大学土木与环境工程学系香港999077

普通硅酸盐水泥(OPC)是一种广泛使用的胶凝材料,但其生产会伴随大量的碳排放.为了减少碳排放,一种有效的方法就是利用固体废弃物制备新型低碳超硫水泥(SPCS)来代替OPC.废弃阴极射线管(CRT)玻璃作为固废,可用于制备SPCS,但其含有多种危... 详细信息

普通硅酸盐水泥(OPC)是一种广泛使用的胶凝材料,但其生产会伴随大量的碳排放.为了减少碳排放,一种有效的方法就是利用固体废弃物制备新型低碳超硫水泥(SPCS)来代替OPC.废弃阴极射线管(CRT)玻璃作为固废,可用于制备SPCS,但其含有多种危险重金属.因此,本研究将CRT玻璃粉作为胶凝材料,CRT玻璃砂作为骨料,应用到SPCS与OPC中,并对比了2种胶凝体系对重金属的固化效果以及长期性能.结果表明,相比于OPC体系,SPCS体系具有更优异的重金属固化效果,同时也能更显著地抑制碱骨料反应.

关键词：低碳胶凝材料固化稳定化重金属耐久性废弃玻璃

Model investigation of the low-carbon MgO-treated soil foundation based on CO_(2) overall carbonation

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第11期15卷 2901-2916页

作者： Guanghua Cai Songyu Liu Yuqing Zhong chisun Poon Jiangshan Li School of Civil Engineering Nanjing Forestry UniversityNanjing210037China Institute of Geotechnical Engineering School of TransportationSoutheast UniversityNanjing211189China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong999077China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China

The overall carbonation of MgO-admixed soil provides not only an efficient and environmentally friendly technique for improving soft ground but also a permanently safe solution for CO_(2) *** evaluate the carbon sequestration potential and promote the carbonation application in soil improvement,a laboratory-scale model investigation is designed under pressurized carbonation considering the influences of MgO dosage and CO_(2) ventilation mode(way).The temperature,dynamic resilience modulus,and dynamic cone penetration(DCP)were tested to assess the carbonation treatment *** physical,strength,and microscopic tests were also undertaken to reveal the evolution mechanisms of CO_(2) migration in the MgO-carbonated *** results indicate that the temperature peaks of MgO-treated foundation emerge at w20 h during hydration,but occur at a distance of 0e25 cm from the gas source within 6 h during *** dynamic resilience moduli of the model foundation increase by more than two times after carbonation and the DCP indices reduce *** the distance from the gas inlet increases,the bearing capacity,strength,and carbon sequestration decrease,whereas the moisture content *** to the end ventilation,the middle ventilation produces a higher carbonation degree and a wider carbonation *** cementation and filling of nesquehonite and dypingite/hydromagnesite are verified to be critical factors for carbonation evolution and enhancing mechanical ***,the overall carbonation model is described schematically in three stages of CO_(2) *** outcomes would help to facilitate the practical application of CO_(2) sequestration in soil treatment.

关键词： Model investigation Overall carbonation Reactive MgO Engineering properties Microscopic characteristics

正常妊娠和妊高征胎盘中血管内皮生长因子的表达及其意义

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中华围产医学杂志 1999年第1期2卷 8-9页

作者：程淑杨池荪李诗兰北京医科大学第三临床医学院妇产科 100083

目的　观察血管内皮生长因子（ＶＥＧＦ）在妊高征（ＰＩＨ）胎盘中的变化。　方法　用免疫组织化学法，检测２０例正常妊娠胎盘（对照组）和２３例妊高征胎盘（妊高征组）中ＶＥＧＦ的水平。　结果ＶＥＧＦ在正常妊娠胎盘和妊高... 详细信息

目的　观察血管内皮生长因子（ＶＥＧＦ）在妊高征（ＰＩＨ）胎盘中的变化。　方法　用免疫组织化学法，检测２０例正常妊娠胎盘（对照组）和２３例妊高征胎盘（妊高征组）中ＶＥＧＦ的水平。　结果ＶＥＧＦ在正常妊娠胎盘和妊高征胎盘中分布基本一致，分布在滋养细胞、血管及绒毛间质。在妊高征组ＶＥＧＦ为轻度表达占７９－２％，无重度表达；而在对照组ＶＥＧＦ轻度表达占２５％，中度表达占４５％，重度表达占３０％。妊高征组中ＶＥＧＦ表达明显低于对照组（Ｐ＜０．０１）。　结论　妊高征胎盘中ＶＥＧＦ的减少可能与胎盘血管生成减少及胎盘滋养叶细胞侵入异常有关，在妊高征发病中占有一定的地位。

关键词：妊娠并发症高血压胎盘内皮生长因子病理学

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小剂量HRT在临床中的应用及监测

中国骨质疏松杂志 2006年第1期12卷 59-61页

作者：杨池荪姜彦彬王振红北京大学第三医院妇产科 100083

目的观察小剂量激素替代治疗(HRT)的应用及监测。方法观察更年期门诊117例围绝经期及绝经后妇女使用小剂量倍美力利维爱及安宫黄体酮治疗更年期相关症状及骨质疏松的效果,并通过B超等方法监测其安全性。结果通过3个月至5年的治疗,潮热... 详细信息

目的观察小剂量激素替代治疗(HRT)的应用及监测。方法观察更年期门诊117例围绝经期及绝经后妇女使用小剂量倍美力利维爱及安宫黄体酮治疗更年期相关症状及骨质疏松的效果,并通过B超等方法监测其安全性。结果通过3个月至5年的治疗,潮热出汗等症状均得到改善,骨质疏松或骨丢失者骨量丢失减缓,在治疗过程中未见子宫内膜增生,伴子宫小肌瘤者未见肌瘤增大。结论小剂量HRT应用于围绝经期及绝经后妇女的治疗是安全有效的。

关键词：激素替代治疗小剂量绝经更年期

妊高征患者血清及胎盘组织中一氧化氮含量变化

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中国优生优育（1990-2002上半年） 2000年第2期11卷 58-59页

作者：程淑杨池荪李诗兰北京大学第三临床医学院妇产科 100083

目的观察一氧化氮(NO)在妊高征患者血清及胎盘组织中的含量变化。方法用硝酸盐还原酶法检测正常妊娠组(30例)、妊高征组(48例)血清及胎盘组织中的硝酸盐含量。结果妊高征患者血清及胎盘组织中硝酸盐含量均明显高于正常妊娠组(P 详细信息

目的观察一氧化氮(NO)在妊高征患者血清及胎盘组织中的含量变化。方法用硝酸盐还原酶法检测正常妊娠组(30例)、妊高征组(48例)血清及胎盘组织中的硝酸盐含量。结果妊高征患者血清及胎盘组织中硝酸盐含量均明显高于正常妊娠组(P

关键词：妊娠高血压综合处一氧化氮胎盘血清

Recent studies on mechanical properties of recycled aggregate concrete in China-A review

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Science China(Technological Sciences) 2012年第6期55卷 1463-1480页

作者： XIAO JianZhuang LI WenGui POON chisun Department of Building Engineering Tongji UniversityShanghai 200092China Department of Civil and Structural Engineering Hong Kong Polytechnic UniversityHong KongChina Committee of Recycled Aggregate Concrete Civil Engineering SocietyShanghai 200092China

Numerous experimental and theoretical studies on recycled aggregate concrete have been carried out in China in the past 10 *** paper provides a comprehensive review of the related findings of research on the mechanical properties of RAC in *** influences of the RCA on the strength and deformation characteristics of concrete,the statistical characteristics for the strength of RAC,fracture energy,stress-strain relationships under uniaxial compression,uniaxial tension as well as pure shear,and the residual strength of RAC after exposure to high temperatures,the bond between RAC and different kinds of steel rebar were also ***,some recent studies on the numerical simulation of the failure mechanism for RAC at the meso-structure level were discussed.

关键词：再生骨料混凝土力学性能审查残余强度 RAC 研究成果变形特性单轴压缩

EFFECTS OF FLY ASH ON MECHANICAL PROPERTIES OF 10-YEAR-OLD CONCRETE PREPARED WITH RECYCLED CONCRETE AGGREGATES

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EFFECTS OF FLY ASH ON MECHANICAL PROPERTIES OF 10-YEAR-OLD C...

2nd International Conference on Waste Engineering and Management

作者： chisun POON Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hong KongChina

＜正＞This paper presents the findings of a long-term study on the mechanical properties of recycled aggregate concrete（RAC） containing 25%,35%and 55%Class-F fly ash,as cement replacement,after curing in water and an outdoor exposure condition for 10 *** in compressive strength,splitting tensile strength,modulus of elasticity with time are determined and *** was found that after 10 years,the compressive strength and modulus of elasticity of the concrete mixture with 100%recycled aggregate was still lower than that of the control *** this period,the highest gain of compressive strength and modulus of elasticity was recorded for the concrete mixture prepared with 55%fly ash RAC followed by 35%fly ash RAC and 25%fly ash *** though the 55%fly ash RAC at the age of 28 days had lower compressive strength than other concretes,it attained the highest strength gain of more than 105%between 28 days and 10 *** general,the compressive and splitting tensile strengths of the water cured concrete were higher than that of outdoor cured *** the modulus of elasticity of the water cured and outdoor exposure concrete were *** study results show the optimal mix proportions for preparing RAC mixtures is by using 50%RA as a replacement of natural aggregates and using 25%FA as a replacement of OPC.

关键词： Concrete Fly ash Long-term properties Recycled aggregates

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建筑废物可持续循环利用的新技术

武汉理工大学学报 2007年第1期29卷 8-11,21页

作者：潘智生寇世聪香港理工大学土木及结构工程系

按照减少、回收和再利用建筑废物的原则,介绍在建筑物拆迁和建筑工地上减少建筑废物以及可持续循环再利用建筑废物的的新技术。这些技术包括:建筑物的选择性拆除;利用建筑废物生产的循环再生骨料制造结构混凝土和非结构混凝土。由于再... 详细信息

按照减少、回收和再利用建筑废物的原则,介绍在建筑物拆迁和建筑工地上减少建筑废物以及可持续循环再利用建筑废物的的新技术。这些技术包括:建筑物的选择性拆除;利用建筑废物生产的循环再生骨料制造结构混凝土和非结构混凝土。由于再生骨料强度低,多孔和吸水率高,给其在混凝土中大量应用带来了混凝土强度低,干缩和蠕变增加的问题。很多欧美国家规定结构混凝土中建筑废物再生骨料的含量不能超过粗骨料含量的20%。而利用这些新技术后,可以在建筑物拆迁过程中和建筑工地上减少废物;非结构混凝土中,再生骨料的含量可以达100%。结构混凝土中,建筑废物再生骨料的含量可以超过粗骨料含量的50%。

关键词：再生骨料建筑废物循环利用