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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    第二期

    混凝土用再生粗骨料性能研究
    混凝土用再生粗骨料性能研究
    • 賀春鵬,付興國,孫相博,管宏雷,李士剛,張 威
    2019年第2期
    摘要
    引用本文
    摘 要:研究了混凝土用再生粗骨料分類、加工方法,對比了再生粗骨料與天然粗骨料的各項性能。并基于研究現狀,針對再生粗骨料存在的問題與不足,提出了建議。 Abstract: The classification and processing methods of recycled coarse aggregate are studied, and the properties of recycled coarse aggregate and natural coarse aggregate are compared. According to the current research situation, some suggestions are put forward to solving the problems and shortcomings of recycled coarse aggregate.
    賀春鵬,付興國,孫相博,等.混凝土用再生粗骨料性能研究[J].混凝土與水泥制品,2019(2):98-100. HE C P,FU X G,SUN X B,et al.Study on Recycled Coarse Aggregate for Concrete[J].China Concrete and Cement Products,2019(2):98-100.
    煤氣化渣微粉膠凝體系水化機理研究
    煤氣化渣微粉膠凝體系水化機理研究
    • 杭美艷,呂學濤,郭艷梅,孫曙光
    2019年第2期
    摘要
    引用本文
    摘 要:通過膠砂強度、水化熱及掃描電鏡(SEM),對純水泥、摻粉煤灰、摻煤氣化渣微粉三種膠凝體系的水化機理進行研究,結果表明:在同水膠比、同摻量的條件下,摻煤氣化渣微粉組膠砂跳桌流動度較小,早期強度高于粉煤灰組,后期強度低于粉煤灰組;摻煤氣化渣微粉組的水化熱溫度與放熱速率要高于粉煤灰組;對三種膠凝體系水化產物的微觀形貌分析發現純水泥組與粉煤灰組的水化產物相似,而摻煤氣化渣微粉組3 d水化產物生成了大量結晶度較低的纖維狀水化硅酸鈣凝膠,28 d水化產物由結晶度較低的纖維狀水化硅酸鈣凝膠轉化為結晶度較高的類似于硬硅鈣石的針狀晶體,使得膠砂強度隨之增強。 Abstract: Through cementing strength, hydration heat and scanning electron microscope (SEM), three kinds of cementitious cement, fly ash and micropowder of coal gasification slag are mixed. The hydration mechanism of the system is studied. The results show that with the same W/B and the same amount of mixing, the flow degree of the skip table with coal gasification slag powder group is slightly higher than that of the fly ash group. The early strength is higher than that of the fly ash group, and the later strength is lower than that of the fly ash group; the hydration heat temperature and exothermic rate of the coal gasification slag micro powder group are higher than that of the fly ash group. The microscopic morphology of the hydration products of the three cementing systems show that the hydration products of the pure cement group and the fly ash group are similar, a large amount of fibrous hydrated calcium silicate gel is produced by the 3 d hydrated product mixed with coal gasification slag. The hydration product of 28 d is converted from a low crystalline calcium silicate gel into a needle like crystal with a higher degree of crystallinity similar to stony calcareous stone which increases the strength of the mortar.
    杭美艷,呂學濤,郭艷梅,等.煤氣化渣微粉膠凝體系水化機理研究[J].混凝土與水泥制品,2019(2):94-97. HANG M Y,LYU X T,GUO Y M,et al.Research on Hydration Mechanism of Cementitious System of Coal Gasification Slag Micropowder[J].China Concrete and Cement Products,2019(2):94-97.
    激發再生微粉活性的方法研究
    激發再生微粉活性的方法研究
    • 張 平,古龍龍,王 琴,陳 旭
    2019年第2期
    摘要
    引用本文
    摘 要:選擇機械球磨和化學激發劑雙重激發方式,通過膠砂試驗,研究了球磨時間、激發劑用量對再生微粉活性的影響,并通過測試活化后再生微粉對水泥膠砂抗壓強度的影響來判斷再生微粉的最優活化方式。試驗結果表明,隨著球磨時間的增長,再生微粉平均粒徑減小,比表面積增大,有利于其活性的提高;掃描電鏡和能譜分析結果表明,再生微粉主要由碳酸鈣和二氧化硅組成,這為激發提供最根本可能性;抗壓強度結果表明,Na2SO4激發效果更好,當激發劑摻量為3%,球磨時間在60 min以上時,可有效地提高再生微粉活性,增活后的再生微粉摻量可擴大至30%左右且能保證了膠砂試塊的強度損失控制在15%以內。 Abstract: The effects of ball milling time and the amount of activator on the activity of the regenerated micro powder are mainly studied by the double excitation method of mechanical ball milling and chemical activator. The optimal activation mode of recycled fine powder is determined by the influence of activated micro powder on compressive strength of cement mortar. The results show that the average particle size of the regenerated powder increases with the increase of the milling time, and the specific surface area increases, which is beneficial to the increase of its activity. The scanning electron microscopy and energy spectrum results show that the regenerated powder is mainly composed of calcium carbonate and silica, which is the most fundamental possibility to improve the excitation. The results show that the Na2SO4 excitation effect is better. When the dosage of activator is 3% and the milling time is above 60 min, the activity of the regenerated micro powder could be improved effectively. After the activation, the content of recycled micro powder can be increased to about 30%, and the strength loss of colloidal sand test blocks com be controlled within 15%, which greatly improves the utilization rate of recycled micro powder.
    張平,古龍龍,王琴,等.激發再生微粉活性的方法研究[J].混凝土與水泥制品,2019(2):90-93. ZHANG P,GU L L,WANG Q,et al.Study on the Method of Stimulating the Activity of Regenerated Micro Powder[J].China Concrete and Cement Products,2019(2):90-93.
    超長大體積混凝土整體基礎后澆帶臨界 澆筑長度研究
    超長大體積混凝土整體基礎后澆帶臨界 澆筑長度研究
    • 商文念,劉建秋,魏珍中,趙海濤,李 林
    2019年第2期
    摘要
    引用本文
    摘 要:采用后澆帶法實現超長大體積混凝土整體基礎,可兼顧土建結構和上部電器設備設置要求,而混凝土后澆帶臨界澆筑長度取值是該方法的關鍵技術問題之一。本文采用ANSYS有限元軟件建立超長大體積混凝土基礎模型,分析了不同季節、入倉溫度和地基約束工況下的后澆帶合理澆筑長度。計算結果表明,澆筑長度對混凝土溫度應力影響明顯,而合理的澆筑長度選取應綜合考慮入倉溫度、季節和基礎約束程度等因素。 Abstract: The post-casting method is used to pour the overall foundation of ultra-long mass concrete, which can take into account the requirements of civil engineering structure and upper electrical equipment. The value of critical pouring length of concrete post-casting belt is one of the key technical problems of this method. The ANSYS finite element software is used to establish the ultra-long mass concrete foundation model. The reasonable pouring length of the post-casting belt under different seasons, storage temperature and foundation is systematically analyzed. The results show that the casting length has obvious influence on the concrete temperature stress, and the reasonable pouring length selection should consider the factors such as the temperature, season and foundation constraint.
    商文念,劉建秋,魏珍中,等.超長大體積混凝土整體基礎后澆帶臨界澆筑長度研究[J].混凝土與水泥制品,2019(2):85-89. SHANG W N,Liu J Q,Wei Z Z,et al.Research on Critical Casting Length of Post-casting Belt of Ultra-long Mass Concrete Overall Foundation[J].China Concrete and Cement Products,2019(2):85-89.
    普硅發泡水泥的制備及配合比研究
    普硅發泡水泥的制備及配合比研究
    • 肖 軍,王 軍,范 琛
    2019年第2期
    摘要
    引用本文
    肖軍,王軍,范琛.普硅發泡水泥的制備及配合比研究[J].混凝土與水泥制品,2019(2):80-84. XIAO J,WANG J,FAN C.Research on Preparation and Mix Proportion of Ordinary Portland Foam Cement[J].China Concrete and Cement Products,2019(2):80-84
    玻璃輕石混凝土熱工性能試驗研究
    玻璃輕石混凝土熱工性能試驗研究
    • 王 瑞,鄒 昀,高傳超,周 虹
    2019年第2期
    摘要
    引用本文
    摘 要:選用具有隱蜂窩多孔結構的玻璃輕石材料作為粗、細骨料取代普通混凝土中的砂和石制作自保溫砌塊,測試了砌塊密度、導熱系數等性能,并根據試驗結果分析了水灰比、水泥用量、細骨料取代率對砌塊力學性能、玻璃輕石粗骨料取代率對熱工性能的影響。試驗分析得到砌塊的最佳配合比:水灰比0.42、水泥用量350 kg/m3、玻璃輕石細骨料取代率100%、玻璃輕石粗骨料取代率100%。所制備的自保溫砌塊干密度為1 596 kg/m3,導熱系數為0.417 W/(m·K)。 Abstract: The glass pumice material with the hidden honeycomb porous structure is used as the fine and coarse aggregate to replace the sand and stone in the ordinary concrete to make the hidden honeycomb self-insulating block. Its density,thermal conductivity and compressive strength were tested. According to the test results, the effects of water-cement ratio, glass pumice coarse aggregate replacement rate, cement dosage and fine aggregate replacement rate on mechanical properties and thermal properties of the block were analyzed. The optimum mix ratio of the block is 0.42, the cement dosage is 350 kg/m3, the replacement rate of glass pumice fine aggregate is 100%, and the replacement ratio of glass pumice coarse aggregate is 100%. The prepared self-insulating block has a dry density of 1 596 kg/m3 and a thermal conductivity of 0.417 W/(m·K).
    王瑞,鄒昀,高傳超,等.玻璃輕石混凝土熱工性能試驗研究[J].混凝土與水泥制品,2019(2):76-79. WANG R,Zou Y,Gao C C,et al.Experimental Research on Thermal Performance of Glass Pumice Concrete[J].China Concrete and Cement Products,2019(2):76-79.
    骨料級配對干硬性火山渣混凝土性能的影響研究
    骨料級配對干硬性火山渣混凝土性能的影響研究
    • 張 旭,王武祥,楊鼎宜,張磊蕾,廖禮平,王愛軍
    2019年第2期
    摘要
    引用本文
    摘 要:火山渣是一種地域性綠色天然原料,加工處理后適宜用于制備輕骨料混凝土及節能建材制品。相關研究表明,火山渣輕骨料級配對混凝土強度和密實度影響顯著,對用于制備混凝土砌塊的干硬性火山渣混凝土更為突出,因此,合理確定火山渣輕骨料級配對保證產品質量和生產成本極為關鍵。本文選用四種粒級火山渣輕骨料,以抗壓強度和干表觀密度為控制目標,開展了骨料級配對火山渣混凝土性能的影響研究,分析了火山渣混凝土干表觀密度與抗壓強度的相關性,提出了組合結構保溫砌塊生產用火山渣輕骨料適宜組成,為干硬性火山渣混凝土的配合比優化設計提供參考。 Abstract: Volcanic slag is a kind of local green and natural raw material. Relevant studies show that the strength and compactness of slag-light aggregate grade matched concrete is significantly affected, which is more prominent for the dry and hard slag-concrete used in the preparation of concrete blocks, and reasonable determination of slag-light aggregate grade matched to guarantee product quality and production cost. Four graded cinder light aggregates are chosen, the compressive strength and dry apparent density of which is taken as control target. In the aggregate composition effect on the performance of cinder concrete research, the cinder concrete dry apparent density and compressive strength of the correlation is analyzed, the composite structure with cinder block production suitable light aggregate composition is proposed, which can provide the reference for the harsh trass concrete mix proportion optimal design.
    張旭,王武祥,楊鼎宜,等.骨料級配對干硬性火山渣混凝土性能的影響研究[J].混凝土與水泥制品,2019(2):72-75. ZHANG X,WANG W X,YANG D Y,et al.The Effects Study of Aggregates Gradation on Properties of Dry and Hard Cinder Concrete[J].China Concrete and Cement Products,2019(2):72-75.
    基于層次分析法的高性能外圍護墻體部品 評價技術研究
    基于層次分析法的高性能外圍護墻體部品 評價技術研究
    • 孫源澤,蔣勤儉,黃清杰,吳煥娟
    2019年第2期
    摘要
    引用本文
    摘 要:當前我國工業化建筑外圍護墻體部品發展迅速,但保溫性能差、墻體開槽多、耐久性能差等問題一直影響行業的發展。為促進外圍護墻體部品向高性能的方向發展與應用,本文通過對工業化建筑外圍護墻體部品國內外研究現狀和外圍護墻體的高性能需求的調查研究,總結了高性能外圍護墻體部品的評價技術指標體系,提出了基于層次分析法的高性能外圍護墻體部品的評價方法,并利用工程實例驗證了該方法的可行性。 Abstract: The envelope wall components of industrial buildings are developing rapidly, but the problems of poor insulation performance, lots of wall grooves and poor durability are troubling its development. To promote the envelope wall components to the high performance and application, the status of the envelope wall components of industrial buildings and the requirements of high performance wall components is studied, the performance evaluation technology index system of the envelope wall components is summed up. At the same time, the high performance evaluation method of the envelope wall components which is based on the analytic hierarchy process (AHP) is put forward, and the engineering example verifies the feasibility of this method.
    孫源澤,蔣勤儉,黃清杰,等.基于層次分析法的高性能外圍護墻體部品評價技術研究[J].混凝土與水泥制品,2019(2):67-71. SUN Y Z,JIANG Q J,HUANG Q J,et al.The Evaluated Technology Research on Envelope Wall Components with High Performance Based on Analytic Hierarchy Process[J].China Concrete and Cement Products,2019(2):67-71.
    再生黏土磚骨料混凝土配合比參數對 性能的影響研究
    再生黏土磚骨料混凝土配合比參數對 性能的影響研究
    • 楊楓林,趙亞松,高建明
    2019年第2期
    摘要
    引用本文
    摘要:使用廢棄黏土磚完全替代天然砂和石子制備全再生混凝土,探究了水膠比、水泥用量、粉煤灰和硅灰取代率對再生混凝土性能的影響。結果表明:降低水膠比和增加水泥用量都能夠提升磚骨料混凝土抗壓強度、降低含水率和增加干表觀密度,但對抗壓強度的提升存在上限;粉煤灰雖然具有火山灰活性,但作用發揮較慢,摻加會降低28 d前的力學性能和干表觀密度。硅灰的加入會明顯提升凈漿黏聚性,提升力學性能。 Abstract: The recycled concrete was prepared by using waste clay bricks as coarse and fine aggregates. The influence of water-binder ratio, cement dosage, fly ash and silica fume content on properties of recycled concrete was studied. The results show that with the decrease of water-cement ratio or the increase of cement dosage, the compressive strength and dry apparent density of recycled concrete increase, meanwhile the moisture content decreases. But there is an upper limit on the compressive strength. Since the pozzolanic activity of fly ash plays slower, the addition of fly ash could reduce the compressive strength and dry apparent density of recycled concrete before 28 d. The use of silica fume could improve the cohesiveness of paste obviously, therefore, the compressive strength of recycled concrete is improved.
    楊楓林,趙亞松,高建明.再生黏土磚骨料混凝土配合比參數對性能的影響研究[J].混凝土與水泥制品,2019(2):63-66. Yang F L,Zhao Y S,Gao J M.The Influence Study of Mix Ratio Parameters on Properties of Recycled Concrete with Waste Clay Bricks as Aggregates[J].China Concrete and Cement Products,2019(2):63-66.
    纖維增強再生骨料混凝土基本力學性能試驗與分析
    纖維增強再生骨料混凝土基本力學性能試驗與分析
    • 李 坤
    2019年第2期
    摘要
    引用本文
    摘 要:研究了不同摻量聚丙烯纖維、玄武巖纖維及其混雜纖維對再生混凝土基本力學性能的影響。試驗結果表明,與素再生混凝土相比,纖維再生混凝土破壞時的整體性、延性更好;單摻纖維再生混凝土的立方體抗壓強度、軸心抗壓強度有不同程度的降低;一定范圍內,隨纖維含量的增加,混雜纖維再生混凝土的強度較素再生混凝土均有所提高。 Abstract: The influences of polypropylene fiber, basalt fiber and their mixture on the mechanical properties of recycled concrete were studied. Results show that compared with the regenerated concrete, the integrity and ductility of fiber regeneration concrete are better. Cubic compressive strength and axial compressive strength of the separate addition of fiber reinforced recycled concrete decrease in different degrees; within a certain range, the strength of hybrid fiber reinforced recycled concrete is higher than that of plain recycled concrete with the increase of fiber content.
    李坤.纖維增強再生骨料混凝土基本力學性能試驗與分析[J].混凝土與水泥制品,2019(2):60-62. LI K.Experiment and Analysis on Basic Mechanical Properties of Fiber Reinforced Recycled Aggregate Concrete[J].China Concrete and Cement Products,2019(2):60-62.
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