偏高岭土地聚合物防水涂料力学性能研究
作者：
武肖雨;刘杰胜;卢雨婷;陈永飞;周昊
期刊：
武汉轻工大学学报 ,2021年40(01):81-84+95 ISSN：2095-7386
作者机构：
武汉轻工大学土木工程与建筑学院,武汉430023;[卢雨婷; 刘杰胜; 武肖雨; 周昊; 陈永飞] 武汉轻工大学
关键词：
复合涂料;乳液;力学性能
摘要：
以偏高岭土为基料,水玻璃为碱激发剂,与EVA乳液进行复合,再加入填料、助剂等,通过搅拌制备偏高岭土地聚合物复合涂料。研究了不同的粉液比、填料和助剂等种类及其掺量对涂层力学性能的影响。结果表明:在粉液比为0.6,磷石膏掺量为8.26%,减水剂掺量为0.7%,偶联剂掺量为0.2%条件下,涂层的力学性能最佳。
语种：
中文
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偏高岭土基地质聚合物涂层材料应用综述
作者：
武肖雨;刘杰胜;董莪;周昊
期刊：
山东商业职业技术学院学报 ,2020年20(04):112-115 ISSN：1671-4385
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430000;[刘杰胜; 武肖雨; 周昊; 董莪] 武汉轻工大学
关键词：
地质聚合物;偏高岭土地质聚合物涂层;耐久性
摘要：
地质聚合物由于其良好的性能,在工程中得到广泛的应用,且在我国资源丰富。以偏高岭土基地质聚合物涂层为例,综述了地质聚合物种类、涂层的影响因素,表明不同的掺和材料、激发剂、固液比等对涂层性能产生不同的影响,该涂层能极好地提高混凝土构件的耐久性,得到广泛应用。
语种：
中文
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聚合物水泥防水涂料性能影响因素研究
作者：
卢雨婷;刘杰胜;武肖雨;陈永飞;高凡
期刊：
山东商业职业技术学院学报 ,2020年20(05):101-104 ISSN：1671-4385
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430040;[卢雨婷; 武肖雨; 刘杰胜; 陈永飞; 高凡] 武汉轻工大学
关键词：
聚合物防水涂料;影响因素;性能;趋势
摘要：
聚合物水泥防水涂料具有优异的防水性能且绿色环保,被广泛应用于建筑防水工程中.介绍了聚合物水泥防水涂料的防水机理,分析综述了影响聚合物水泥防水涂料性能的内在因素和外界环境因素,对各因素如何影响其性能、影响趋势及产生影响的具体原因进行了详细说明.
语种：
中文
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剑麻纤维改性水泥砂浆性能研究
作者：
石浡汛;董莪;刘杰胜;张同同;段焱侠
期刊：
武汉轻工大学学报 ,2020年39(1):40-43 ISSN：2095-7386
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430023;[张同同; 石浡汛; 刘杰胜; 董莪; 段焱侠] 武汉轻工大学
关键词：
剑麻纤维;水泥砂浆;力学性能
摘要：
本文研究了剑麻纤维的掺入量和纤维长度对水泥砂浆抗折、抗压、湿密度和稠度的影响。试验结果表明:剑麻纤维长度为3 cm,剑麻纤维掺入量为1%时,剑麻纤维水泥砂浆的抗压强度效果最好。剑麻纤维长度为3 cm,剑麻纤维掺入量为0.5%时,剑麻纤维水泥砂浆抗折强度表现的最好。当剑麻纤维的长度逐渐增大,掺入量增多时,剑麻纤维水泥砂浆的稠度和湿密度呈下降趋势。
语种：
中文
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海工混凝土修补材料聚合物砂浆力学性能分析
作者：
石光宇;刘杰胜;张荣堂;卢雨婷
期刊：
武汉轻工大学学报 ,2020年39(02):43-47 ISSN：2095-7386
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430023;[卢雨婷; 张荣堂; 刘杰胜; 石光宇] 武汉轻工大学
关键词：
丁苯橡胶乳液;丙烯酸酯乳液;修补材料;力学性能
摘要：
为分析不同种类、不同掺量的乳液在海工混凝土修补材料中的应用做准备.将不同掺量的丁苯橡胶乳液修补砂浆和丙烯酸酯乳液修补砂浆作为修补材料,进行力学性能对比后找出优缺点,确定最佳配合比为10％.试验可为后续制备优异的抗渗性和抗冻融性的修补材料打下良好基础.
语种：
中文
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Investigation on waterproof mechanism and micro-structure of cement mortar incorporated with silicane
作者：
Li, Faping;Liu, Lisheng;Liu, Ke;Zheng, Aohan;Liu, Jiesheng*
期刊：
Construction and Building Materials ,2020年239:117865 ISSN：0950-0618
通讯作者：
Liu, Jiesheng
作者机构：
[Li, Faping; Zheng, Aohan] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China.;[Li, Faping; Liu, Lisheng] Wuchang Univ Technol, Sch Urban Construct, Wuhan 430223, Hubei, Peoples R China.;[Li, Faping; Liu, Jiesheng; Liu, Ke] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Liu, Jiesheng] W;Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Hubei, Peoples R China.
关键词：
Cement mortar;Crack resistance;Permeability resistance;Waterproof;XRD
摘要：
This paper aimed to investigate the effect of different dosages silicane on waterproof mechanism and micro-structure of control and modified cement mortar incorporated with silicane using water absorption of capillarity, crack resistance, wettability, permeability resistance and degree of hydration test. At the same time, the micro-structure mechanism of cement mortar were researched by the Scanning electron microscopy (SEM), the X-ray diffraction (XRD), the Fourier transform-infrared spectroscopy (FT-IR) and Nitrogen-absorption test. Modified cement mortar were prepared by incorporating 1%, 3% and 5% silicane into control cement mortar, respectively. The experimental results shown that for the different dosages silicone and mix designs used in this paper, the addition of silicane improved the crack resistance, contact angle and the permeability resistance while decreased the water absorption of capillarity compared with control cement mortar, which indicated that the waterproof of modified cement mortar was strengthened generally. The Non-evaporable water content was used to evaluate the degree of hydration of control modified cement paste. Experimental results illustrated that degree of hydration was restrained because of the incorporation of silicane, which could be testified using the XRD and FT-IR test. In addition, in comparison with control cement mortar, the maximum adsorption capacity and total pore volume of cement mortar were increased by the SEM and Nitrogen-absorption test, manifesting that most of pores of modified cement mortar was closed. Most importantly, the hydration and waterproof mechanism was revealed. © 2019 Elsevier Ltd
语种：
英文
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石灰改性磷石膏水泥砂浆耐久性能研究
作者：
魏靖;刘杰胜;冯博文;陈耀华;张磊
期刊：
武汉轻工大学学报 ,2020年39(06):51-55,107 ISSN：2095-7386
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430023;[刘杰胜; 冯博文; 魏靖; 陈耀华; 张磊] 武汉轻工大学
关键词：
磷石膏;生石灰;水泥砂浆;耐久性
摘要：
将生石灰对磷石膏进行陈化预处理,研究不同掺量生石灰对磷石膏水泥砂浆耐久性能的影响。结果表明,适量生石灰加入磷石膏水泥砂浆能改善其耐久性。生石灰的掺加会抑制磷石膏水泥砂浆抗冻性,磷石膏水泥砂浆的质量损失率和抗压强度损失率随生石灰掺入量的增多而变大;随着生石灰掺入量增加,磷石膏水泥砂浆的抗渗性和抗硫酸盐腐蚀性能先增大后减小,当生石灰掺入量为2%时,磷石膏水泥砂浆抗渗性及抗硫酸盐腐蚀性最好。
语种：
中文
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Model test of the stability degradation of a prestressed anchored rock slope system in a corrosive environment
作者：
Li Cong;Zhang Rong-tang;Zhu Jie-bing* ;Liu Zhi-jun;Lu Bo;...
期刊：
山地科学学报：英文版 ,2020年17(10):2548-2561 ISSN：1672-6316
通讯作者：
Zhu Jie-bing
作者机构：
[Li Cong; Zhang Rong-tang; Liu Jie-sheng] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Hube, Peoples R China.;[Lu Bo; Li Cong; Zeng Ping; Zhu Jie-bing; Jiang Yu-zhou; Wang Bing] Changjiang River Sci Res Inst, Key Lab Geotech Mech & Engn, Minist Water Resources, Wuhan 430010, Peoples R China.;[Liu Zhi-jun] Guangzhou Baiyun Int Airport Co Ltd, Guangzhou 510406, Peoples R China.
通讯机构：
[Zhu Jie-bing] C;Changjiang River Sci Res Inst, Key Lab Geotech Mech & Engn, Minist Water Resources, Wuhan 430010, Peoples R China.
关键词：
Model test;Bedding slope;Prestressed anchorage;Corrosion;Electrochemical measurement
摘要：
The long-term stability of a prestressed anchored slope might be influenced by the durability of the anchorage structure. To understand long-term stability of anchored rock slopes, the research presented herein evaluated the performance evolution of a prestressed anchored bedding slope system in a corrosive environment by model test. The corrosion process in a prestressed anchor bar was monitored in terms of its open-circuit potential (OCP), corrosion current density (CCD), and electrochemical impedance spectroscopy (EIS). The stability of the prestressed anchored slope was evaluated by monitoring changes in anchorage force and displacements. The experimental results show that prestress and oxygen could reduce the corrosion resistance of the anchor bar, and anchor bars in a chloride-rich environment are very susceptible to corrosion. Prestressed tendons in a corrosive environment suffer a loss of anchorage force, the prestress decreases rapidly after locking, and the rate thereof decreases until stabilising; in the later stage, corrosion leads to the reduction of the cross-sectional area of the steel bar which may cause the reduction in anchorage force again. Anchorage force controls the deformation and stability of the anchored slope, the prestress loss caused by later corrosion may lead to an increased rate of displacement and stability degradation of the prestressed anchored rock slope.
语种：
英文
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基于BPNNAHP的绿色医院建筑评价体系的评价模型
作者：
段焱侠;董莪;刘杰胜
期刊：
武汉轻工大学学报 ,2020年39(1):44-50 ISSN：2095-7386
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430023;[刘杰胜; 董莪; 段焱侠] 武汉轻工大学
关键词：
绿色医院;BP神经网络;评价模型
摘要：
在全球资源紧缩下,绿色发展已经成为一个重要趋势,能源消耗巨大的医院的绿色发展也显得尤为重要.以绿色医院建筑为研究对象,根据可模拟、可量化原则以及相关规范选取评价指标,运用AHP构建绿色医院建筑评价体系,确定各指标权重,建立BPNN_AHP评价模型.根据比较AHP评价模型与BPNN_AHP评价模型的精度,来判断BPNN_AHP模型的优化性能,仿真试验结果表明,BPNN_AHP模型较AHP模型平均误差值减少了1.78％,从而证明了基于BPNN_AHP的绿色医院建筑评价体系的评价模型的可行性.
语种：
中文
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Effects of phosphogypsum and calcined phosphogypsum content on the basic physical and mechanical properties of Portland cement mortar
作者：
Gong, Xiaoqiang;Liu, Jiesheng* ;Sun, Zhengguang;Li, Faping
期刊：
JOURNAL OF TESTING AND EVALUATION ,2020年48(5):3539-3549 ISSN：0090-3973
通讯作者：
Liu, Jiesheng
作者机构：
[Liu, Jiesheng; Li, Faping; Gong, Xiaoqiang] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Peoples R China.;[Sun, Zhengguang] Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, 368 Friendship Ave, Wuhan 430062, Peoples R China.
通讯机构：
[Liu, Jiesheng] W;Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Peoples R China.
关键词：
Calcined;Environmental;Mechanical properties;Phosphogypsum
摘要：
Phosphogypsum (PG) is an industrial by-product from the wet manufacturing process of phosphoric acid production in the phosphating industry on rock phosphate. Indiscriminate dumping of PG results in soil, water, and air pollution and serious environmental damage (chemical and radioactive contamination). The application of PG as an additive in cement mortar was evaluated in this article. The properties of PG at 800°C in a muffle furnace and the effects on the mechanical behavior of cement have been studied in this article. The effect of using PG as a partial replacement for cement has been investigated by compressive and flexural strength tests. Water absorption, mortar consistency, dry bulk density, and water retention were also tested. Meanwhile, the internal structural characteristics of samples were determined though scanning electron microscopy analysis. By evaluating properties of mixture cement paste, according to the results of the study, it was determined that a cement mortar addition of 30 % calcined PG gave the optimum results. The mortar with calcined PG of 800°C has the characteristics of low density, light weight, and stable performance. Utilizing PG to produce cement mortar improves the mechanical property, while the environmental impact is negligible.<br/> Copyright ©2019 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959
语种：
英文
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高吸水树脂改性水泥砂浆的耐久性研究
作者：
张同同;刘杰胜;龚晓强;朱娇;杨玲
期刊：
山东商业职业技术学院学报 ,2020年20(01):108-111 ISSN：1671-4385
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430023;[张同同; 刘杰胜; 杨玲; 朱娇; 龚晓强] 武汉轻工大学
关键词：
高吸水树脂;水泥砂浆;抗渗性;抗硫酸盐侵蚀;冻融循环
摘要：
将不同掺量的高吸水树脂掺入水泥砂浆中,对水泥砂浆的耐久性做了系统的研究。研究发现掺入高吸水树脂可以明显改善水泥砂浆的耐久性,水泥砂浆的抗硫酸盐侵蚀能力明显提高,伴随高吸水树脂掺入量的增大,砂浆的抗渗性也有所提高,抗冻性也逐步增强。高吸水树脂掺量在0~1%范围内,掺入量为0.5%时,砂浆的耐久性最佳。
语种：
中文
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淡化海砂制备水泥砂浆物理及力学性能试验研究
作者：
孙雨辰;刘杰胜;张荣堂
期刊：
武汉轻工大学学报 ,2019年38(5):59-62 ISSN：2095-7386
作者机构：
武汉轻工大学 土木工程与建筑学院,湖北 武汉,430023;[孙雨辰; 张荣堂; 刘杰胜] 武汉轻工大学
关键词：
水泥砂浆;海砂水洗;海砂替代河砂;抗压强度;抗折强度;表观密度:吸水率
摘要：
探究了用海砂替代河砂以不同替代比例(25％,50％,75％,100％)和不同养护龄期(3 d,7 d,28 d)对水泥砂浆试件的表观密度、吸水率、抗折强度和抗压强度等物理性能的影响.经过对实验数据的合理分析总结,得出以下结论:随着用海砂替代河砂的替代比例的增加,水泥砂浆试件的表观密度呈下降趋势;随着海砂替代河砂的比例增加,试件吸水前的质量、吸水后的质量和吸水率均呈负相关:在相同养护龄期的条件下,通过提高海砂替代河砂的比例,水泥砂浆试件的抗折强度和抗压强度均呈减小的趋势,且养护龄期越长,这种减小的趋势越明显:在相同的替代比例下,随着养护龄期增加,试件的抗折强度和抗压强度呈增加趋势,且替代比例越小,这种增加的趋势越明显:在替代比例为25％,养护龄期为28 d时,海砂砂浆的表观密度、抗压抗折强度均为最大.
语种：
中文
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Research on Connection between Essential Properties and Micromechanism of Organic Silicon-Modified Cement Mortar
作者：
Li, Faping;Liu, Jiesheng*
期刊：
JOURNAL OF TESTING AND EVALUATION ,2019年47(2):1360-1374 ISSN：0090-3973
通讯作者：
Liu, Jiesheng
作者机构：
[Li, Faping; Liu, Jiesheng] Wuhan Polytech Univ, Sch Civil Engn & Architecture, 68 Xuefu S Rd, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Liu, Jiesheng] W;Wuhan Polytech Univ, Sch Civil Engn & Architecture, 68 Xuefu S Rd, Wuhan 430023, Hubei, Peoples R China.
关键词：
organic silicon;cement mortar;mechanical strength;porosity;micromechanism
摘要：
This article aimed to research the effect of organic silicon on the density, mechanical strength, water absorption, porosity, and crack resistance of cementitious construction materials. Modified cement mortar was prepared by adding different amounts of organic silicon into control cement mortar. Mechanical strength was evaluated using bending and compressive strength tests. Porosity was evaluated to assess the inner structure of cement mortar. Furthermore, the micromechanism of modified cement mortar and control cement mortar was explored using the nitrogen-absorption test and a Scanning Electron Microscope (SEM). Experimental results showed that for the organic silicon and mix design used in this article, the incorporation of organic silicon generally reduced the mechanical strength and density and increased the water absorption, porosity, and crack resistance. In addition, the analysis of the nitrogen-absorption test and SEM test revealed the modified mechanism and the connection between the macroscopic properties and micromechanism of modified cement mortar. Copyright © 2018 by ASTM International.
语种：
英文
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地聚合物的特性及应用
作者：
苏杜成;刘杰胜
期刊：
百科论坛电子杂志 ,2019年(23):680-681 ISSN：2096-3661
作者机构：
武汉轻工大学给排水科学与工程 湖北 武汉 430000;武汉轻工大学土木工程与建筑学院副院长 湖北 武汉 430000;[刘杰胜; 苏杜成] 武汉轻工大学
关键词：
地聚合物;特性;应用
摘要：
国内外很多研究者对地聚合物相关性能进行了研究.本文从碳化、高温、酸的腐蚀和硫酸盐的侵蚀等方面阐述了地聚合物材料的特性.地聚合物具有优良的有机聚合物,陶瓷和水泥性能,所以可以应用于新型胶凝材料、有毒废物密封等方面.
语种：
中文
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Study on the Properties and Mechanism of Mortars Modified by Super Absorbent Polymers
作者：
Li Faping;Liu Jiesheng*
期刊：
JOURNAL OF TESTING AND EVALUATION ,2019年47(2):1516-1532 ISSN：0090-3973
通讯作者：
Liu Jiesheng
作者机构：
[Li Faping; Liu Jiesheng] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Sch South Rd 68, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Liu Jiesheng] W;Wuhan Polytech Univ, Sch Civil Engn & Architecture, Sch South Rd 68, Wuhan 430023, Hubei, Peoples R China.
关键词：
Early crack resistance;Mechanical property;Mortar;SEM;Super absorbent polymers
摘要：
The article investigated the influence of Super Absorbent Polymers (SAPs) with absorption behaviors on the consistency, fluidity, water absorption, mechanical properties, early crack resistance, permeability resistance, and degree of hydration of cementitious construction materials. Mechanical strength was investigated using a flexural and compressive strength test machine. Nonevaporable water content was employed to assess the degree of hydration of the cement powders. The durability of mortar was characterized using early crack resistance and a permeability resistance test. Furthermore, the micromechanism of mortars modified by SAPs and control mortars was researched using a Scanning Electron Microscope (SEM). Experimental results showed that for the SAPs and mix designs used in this article, the incorporation of SAPs generally reduced the mechanical strength and increased the consistency, fluidity, water absorption, and degree of hydration of modified mortars compared with control mortars. The durability of mortars incorporating SAPs was greatly improved. The connection of the macroproperty and micromechanism of mortars was researched using an SEM.
语种：
英文
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地聚合物砂浆早期力学性能的影响因素分析
作者：
张同同;刘杰胜;付弯弯;石浡汛
期刊：
武汉轻工大学学报 ,2019年38(06):44-48 ISSN：2095-7386
作者机构：
武汉轻工大学土木工程与建筑学院,湖北武汉430023;[石浡汛; 张同同; 刘杰胜; 付弯弯] 武汉轻工大学
关键词：
偏高岭土;地聚合物;水玻璃;激固比;早期力学性能
摘要：
为了提高地聚合物砂浆的早期强度,采用对照试验,研究了水泥掺量、碱激发的模数以及激固比三个方面对地聚合物砂浆的早期力学性能的影响.研究结果表明,通过调节这三个因素的比例可以有效地提高地聚合物的早期强度,在水泥掺量为40％、水玻璃模数为1.6、激固比为0.25时,地聚合物早期力学性能最佳.本文为地聚合物用于快速修补材料的研究提供了理论依据.
语种：
中文
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Effect of Modified Phosphogypsum on Properties of Cement Mortar
作者：
Gong, Xiaoqiang;Liu, Jiesheng* ;Zhang, Tongtong;Jiao, Zhu
期刊：
JOURNAL OF TESTING AND EVALUATION ,2019年48(4):2803-2812 ISSN：0090-3973
通讯作者：
Liu, Jiesheng
作者机构：
[Jiao, Zhu; Liu, Jiesheng; Gong, Xiaoqiang; Zhang, Tongtong] Wuhan Polytech Univ, Sch Engn & Architecture, Wuhan 430023, Peoples R China.
通讯机构：
[Liu, Jiesheng] W;Wuhan Polytech Univ, Sch Engn & Architecture, Wuhan 430023, Peoples R China.
关键词：
Activation index;Mechanical properties;Phosphogypsum
摘要：
The resource utilization of phosphogypsum (PG) can reduce the consumption of resources, turn waste into valuables, turn damage into profit, and form a green recycling economy of “resources-products-regenerated resources.” The article, combined with the comprehensive utilization of PG, analyzes the existing problems. Using lime neutralization to pretreat PG, the pH value, mortar consistency and setting time, activation index, and physical properties as well as the Fourier transform infrared spectroscopy and scanning electron microscopy examination with lime dosage are discussed. The results show that the performance of the obtained mixture powder activation index was better when it was weakly acidic; it is suggested that the optimal pH value range of lime neutralization for modified PG was about 4.52. The physical properties of PG are greatly affected by the lime content, and the influence mechanism was analyzed. It is anticipated that the results of the present study will be useful in utilizing the waste materials (fly ash, PG) for various geotechnical applications. Copyright © 2019 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959
语种：
英文
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磷石膏路基材料性能的实验研究
作者：
况祖平;刘杰胜;朱一凡;龚晓强
期刊：
砖瓦 ,2019年(11):56-58 ISSN：1001-6945
作者机构：
武汉轻工大学土木工程与建筑学院,湖北 武汉,430023
会议名称：
2019(义乌)国际墙体屋面材料生产技术交流大会
会议时间：
2019-11-01
会议地点：
浙江义乌
会议论文集名称：
2019(义乌)国际墙体屋面材料生产技术交流大会论文集
关键词：
磷石膏;路基材料;吸水透水;绿色环保
摘要：
在路基材料中掺入一些矿渣、粉煤灰、磷石膏等材料可以提高路基材料的各种性能。通过在砂浆的拌和过程直接掺入磷石膏制备水泥基路基材料,系统研究了磷石膏路基材料的基本性能。研究结果表明随着磷石膏的掺量的增加,路基材料的基本抗压强度没有损害,吸水率有显著提高,对工业废料的处理和利用具有重大意义,符合公路路基设计规范和绿色环保的新时代发展理念。
语种：
中文
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Durability of Concrete Incorporating Rice Husk Ashe
作者：
Li, Faping* ;Liu, Jiesheng;Gao, Xuan;Zhai, Jingwei;Liu, Yulin
期刊：
MATERIALS PERFORMANCE ,2019年58(3):52-56 ISSN：0094-1492
通讯作者：
Li, Faping
作者机构：
[Gao, Xuan; Li, Faping; Liu, Jiesheng; Zhai, Jingwei; Liu, Yulin] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan, Hubei, Peoples R China.
通讯机构：
[Li, Faping] W;Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan, Hubei, Peoples R China.
摘要：
Modified rice husk ash (RHA) concrete was prepared by adding different RHA dosages at different ternperatures into cementitious composites. The durability of the binders was characterized using a freeze-thaw test, coupled with compressive strength and weight loss testing and a permeability resistance test. The microstructure of modified concrete was investigated by scanning electron microscopy (SEM). Because of freezing and thawing, the compressive strength and weight loss ratios of the modified concrete were decreased compared with the control concrete. The experimental data revealed that the permeability resistance of the modified concrete was higher with the introduction of RHA. The SEM analysis indicates the behavior modification mechanism.
语种：
英文
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石灰改性磷石膏对水泥砂浆性能影响的研究
作者：
龚晓强;刘杰胜;徐晶云;张同同;朱娇
期刊：
武汉轻工大学学报 ,2019年38(1):51-55+72 ISSN：2095-7386
作者机构：
武汉轻工大学 土木工程与建筑学院,湖北 武汉,430023;[徐晶云; 张同同; 刘杰胜; 朱娇; 龚晓强] 武汉轻工大学
关键词：
磷石膏;预处理;凝结时间;力学性能
摘要：
采用生石灰对磷石膏进行中和预处理,研究了生石灰和磷石膏混合物的活化指数及其水泥砂浆基本力学性能随生石灰掺量的变化规律,结合红外光谱和电镜扫描进行机理分析。结果表明:磷石膏的活化指数与生石灰掺量之间关系密切,改性磷石膏活化指数的最佳磷石膏掺量为2%;生石灰加入磷石膏水泥基材料大大增加了砂浆的最大稠度用水量和水泥水化反应的凝结时间;磷石膏水泥砂浆的物理力学性能受生石灰掺量的影响较大,砂浆力学性能较好时对应的磷石膏掺量也为2%。实验证明磷石膏水泥砂浆经生石灰中和处理能制备出性能更优的水泥砂浆,提高磷石膏在建材方面的利用率。
语种：
中文
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