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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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    第五期

    黏土磚再生粗骨料生態混凝土制備及微觀性能研究
    黏土磚再生粗骨料生態混凝土制備及微觀性能研究
    • 孫 勇
    2019年第5期
    摘要
    引用本文
    摘 要:黏土磚再生粗骨料生態混凝土的制備工藝、結構以及性能與普通混凝土不同,黏土磚粗骨料由于破碎過程中產生裂隙較多,其強度比天然骨料低,強化后的骨料性能可滿足制造生態混凝土的需要。本文研究了設計目標孔隙率、水膠比、骨料粒徑等均會對黏土磚再生粗骨料混凝土的強度產生影響,結果表明,設計目標孔隙率影響最大,骨料粒徑影響最小,在25%以上孔隙率要求下,優化混凝土配合比設計,可配制出強度大于5 MPa且具有較好施工性能的黏土磚再生粗骨料生態混凝土。 Abstract: The preparation process, structure and performance of clay brick recycled coarse aggregate ecological concrete are different from normal concrete. The strength of coarse aggregate of clay brick is lower than that of natural aggregate because there are many cracks during the process of crushing. The reinforced aggregate property can meet the needs of making ecological concrete. The effect of design target porosity, water-binder ratio and aggregate size on the strength of recycled coarse aggregate concrete of clay brick is studied. The results show that the design target has the greatest influence on the porosity and the aggregate particle size has the least effect. Under the requirement of more than 25% porosity, the concrete mix ratio design is optimized. The recycled coarse aggregate ecological concrete with strength greater than 5 MPa and good construction performance can be prepared.
    孫勇.黏土磚再生粗骨料生態混凝土制備及微觀性能研究[J].混凝土與水泥制品,2019(5):97-100. SUN Y.Study on Preparation and Microscopic Properties of Clay Brick Recycled Coarse Aggregate Ecological Concrete[J].China Concrete and Cement Products,2019(5):97-100.
    粉煤灰對再生混凝土抗硫酸鹽侵蝕及界面過渡區微觀特性的影響
    粉煤灰對再生混凝土抗硫酸鹽侵蝕及界面過渡區微觀特性的影響
    • 朱曉云1,孫國卿2
    2019年第5期
    摘要
    引用本文
    摘 要:為了探究硫酸鹽侵蝕作用下粉煤灰再生混凝土性能的變化,測試了材料配比對混凝土抗壓耐蝕系數和質量損失率的影響,得到合理的材料組成,并通過SEM觀察再生混凝土中老骨料-新漿體、老漿體-新漿體和老骨料-老漿體三種界面過渡區的微觀形貌,解釋了粉煤灰對再生混凝土抗硫酸鹽侵蝕的改善機理。結果顯示,增大水膠比和再生骨料替代率都會削弱混凝土的抗硫酸鹽侵蝕性能,而粉煤灰的摻入能明顯提高混凝土的抗硫酸鹽侵蝕能力。最終確定的水膠比為0.55,再生骨料替代率和粉煤灰摻量分別為50%和30%。老骨料-新漿體界面和老骨料-老漿體界面是粉煤灰再生混凝土中的雙重薄弱面,在制備時需重點處理。 Abstract: In order to investigate the change of the performance of fly ash recycled concrete under the action of sulfate erosion, the effects of material ratio on the corrosion resistance coefficient and quality loss rate of concrete were tested and reasonable material composition was obtained. The microstructures of three interfacial transition zones of old aggregate-new slurry, old slurry-new slurry and old aggregate-old slurry in recycled concrete were observed by SEM. The results show that increasing the W/B and the replacement rate of recycled aggregate will weaken the sulfate corrosion resistance of concrete, but the addition of fly ash can obviously improve the performance of concrete against sulfate erosion. The W/B, the substitution rate of recycled aggregate and the amount of fly ash were determined by 0.55, 50% and 30 % respectively. The interface between old aggregate and new slurry, old aggregate and old slurry is the double weak surface in fly ash recycled concrete, so it should emphasis on preparation.
    朱曉云,孫國卿.粉煤灰對再生混凝土抗硫酸鹽侵蝕及界面過渡區微觀特性的影響[J].混凝土與水泥制品,2019(5):92-96. ZHU X Y,SUN G Q.The Influence of Fly Ash on Resistance to Sulphate Erosion and the Microstructure of Interfacial Transition Zone of Recycled Concrete[J].China Concrete and Cement Products,2019(5):92-96.
    鋼渣粉部分替代煅燒MgO對MPC混凝土性能的影響
    鋼渣粉部分替代煅燒MgO對MPC混凝土性能的影響
    • 張智慧1,代清冬2
    2019年第5期
    摘要
    引用本文
    摘 要:將鋼渣粉取代部分煅燒MgO,研究了不同摻量鋼渣粉對磷酸鎂水泥(MPC)混凝土力學性能和耐久性能的影響。試驗結果表明,摻有5%~30%取代率的鋼渣粉會降低MPC混凝土的早期強度,但會明顯提高MPC混凝土的后期強度,當鋼渣粉取代率為15%時,MPC混凝土的60 d抗壓強度達到最大;較低和較高的鋼渣粉取代率會對MPC混凝土的劈裂抗拉強度產生不利影響,當鋼渣粉取代率為15%和20%時,MPC混凝土的抗拉強度高于基準組;不同鋼渣粉取代率的MPC混凝土的耐水性能均高于基準組,當鋼渣粉取代率超過10%后,MPC混凝土的強度保持率均在0.9以上;鋼渣粉的摻入可在一定程度上提高MPC混凝土抗氯鹽及硫酸鹽侵蝕性能,但較高的鋼渣粉取代率會對MPC混凝土抗硫酸鹽侵蝕能力產生不利影響。 Abstract: The effect of steel slag powder on mechanical properties and durability of magnesium phosphate cement (MPC) concrete was investigated by partially substituting calcined MgO with steel slag powder. The results indicate that when adding steel slag powder with 5%~30% substitution ratios, the early strength of MPC concrete can be reduced, whereas the later strength of MPC concrete can be evidently enhanced. Specifically, the substitution ratio of steel slag powder is 15%, the 60 d compressive strength of MPC concrete reaches the maximum value. Lower and higher substitution ratio of steel slag powder will adversely affect the splitting tensile strength of MPC concrete, when the substitution ratios are 15% and 20%, the tensile strengths of MPC concrete are higher than those of reference group. The water resistance of MPC concrete with different substitution ratios of steel slag powder is higher than that of reference group. When the substitution ratio exceeds 10%, the strength retention rate of MPC concrete is above 0.9. The addition of steel slag powder can improve the corrosion resistance of MPC concrete to chloride and sulfate to some extent. However, the higher substitution rate of steel slag powder will have a negative influence on the sulfate corrosion resistance of MPC concrete.
    張智慧,代清冬.鋼渣粉部分替代煅燒MgO對MPC混凝土性能的影響[J].混凝土與水泥制品,2019(5):87-91. ZHANG Z H,DAI Q D.Effects of Steel Slag Powder Partially Replaced Calcined MgO on Performance of MPC Concrete[J].China Concrete and Cement Products,2019(5):87-91.
    被動式超低能耗建筑外墻保溫系統施工措施分析
    被動式超低能耗建筑外墻保溫系統施工措施分析
    • 蘇永波,單賀明,侯 綱
    2019年第5期
    摘要
    引用本文
    摘 要:被動式超低能耗建筑是一種通過保溫隔熱性能和氣密性能更高的圍護結構,采用新風熱回收技術,并利用可再生能源,提供舒適室內環境的建筑,可以滿足現代人們的生活需要。本文以秦皇島 “在水一方”項目為例,介紹了被動式超低能耗建筑外墻保溫系統在施工中的具體措施,可為類似工程施工提供參考。 Abstract: Passive ultra-low energy consumption building can be constructed through a higher envelope of insulation and tightness. It can provide people with comfortable indoor living environment by adopting new wind and heat recovery technology and using renewable energy to meet the needs of modern people's lives. Taking the "water side" project in Qinhuangdao as an example, the concrete measures of passive exterior wall insulation system are introduced in construction of ultra-low energy consumption buildings, which can provide a reference for the construction of similar projects.
    蘇永波,單賀明,侯綱.被動式超低能耗建筑外墻保溫系統施工措施分析[J].混凝土與水泥制品,2019(5):84-86. SU Y B,SHAN H M,HOU G.Analysis of Construction Measures for External Wall Insulation System in Passive Ultra-low Energy Consumption Buildings[J].China Concrete and Cement Products,2019(5):84-86.
    清水混凝土建筑立面設計及工程應用
    清水混凝土建筑立面設計及工程應用
    • 金奇志1,馬 春1,劉元利2,勞 兵3
    2019年第5期
    摘要
    引用本文
    摘 要:為了研究清水混凝土在建筑工程中的應用效果,以廣西某大學校門為例,從清水混凝土的材料配比、施工工藝及養護與修復等方面進行了系統分析和討論,提出了清水混凝土在建筑立面設計中獨特的裝飾效果及施工要點,并闡述了所遇到的問題和改進方案,探索了清水混凝土的一些新制備思路和方法。 Abstract: In order to study the application effect of fair-faced concrete in architectural engineering, taking a university gate in Guangxi as an example, the material proportion, construction technology, maintenance and repair of fair-faced concrete are systematically analyzed and discussed, the unique decorative effect and construction points of fair-faced concrete in architectural design are put forward, and the main points are expound. The problems encountered and the improvement schemes are attempted to explore some new preparation ideas and methods of fair-faced concrete.
    金奇志,馬春,劉元利,等.清水混凝土建筑立面設計及工程應用[J].混凝土與水泥制品,2019(5):80-83. JIN Q Z,MA C,LIU Y L,et al.Building Facade Design and Engineering Application of Fair-faced Concrete[J].China Concrete and Cement Products,2019(5):80-83.
    國內外硬化混凝土性能測試方法標準對比研究
    國內外硬化混凝土性能測試方法標準對比研究
    • 王 軍1,吳媛媛2,曾 維3,冷 政3
    2019年第5期
    摘要
    引用本文
    摘 要:混凝土作為用途最為廣泛的建筑材料,其質量與建筑物結構安全關系重大,科學合理的測試方法是準確表征及評價硬化混凝土性能的基礎,因此,國內外對硬化混凝土的性能測試均制定了相應的標準。本文從試件與試模、試件的制作和養護、抗壓強度、試驗機規范、抗折強度、劈裂抗拉強度、密度以及壓力滲水深度等方面對比研究了歐洲與我國硬化混凝土性能測試方法標準之間的異同,可為我國標準的改進和修訂提供借鑒。 Abstract: Concrete is the most widely used building material, and its quality is very important to the structural safety of buildings. A scientific and reasonable test method is the basis for accurately characterizing and evaluating the properties of hardened concrete. Therefore, domestic and international standards for the performance testing of hardened concrete have been formulated. In favor of the continuous improvement of China's standards and provide useful data and information for standard revision work, the similarities and differences between the standard of performance testing methods for hardened concrete in Europe and China are compared from the aspects of specimen preparation, trial manufacture, specimen fabrication and maintenance, compressive strength, test machine specification, flexural strength, splitting tensile strength, density and pressure seepage depth,which can provide a reference for the development of the standard.
    王軍,吳媛媛,曾維,等.國內外硬化混凝土性能測試方法標準對比研究[J].混凝土與水泥制品,2019(5):74-79. WANG J,WU Y Y,ZENG W,et al.Comparative Research on Domestic and International Standards of Testing Methods of Hardened Concrete Performance[J].China Concrete and Cement Products,2019(5):74-79.
    寒冷地區加氣混凝土自保溫墻體熱工性能研究
    寒冷地區加氣混凝土自保溫墻體熱工性能研究
    • 黎昌倫
    2019年第5期
    摘要
    引用本文
    摘 要:隨著社會的進步,能耗問題日益凸顯,建筑能耗所占比重越來越大,在這種情況下,建筑的節能特性就顯得尤為重要。自保溫墻體作為節能建筑領域里的典型代表,同時也暴露出諸多的缺點,例如墻體熱橋部位熱量散失嚴重、墻體開裂、內表面結露等問題。本文通過自保溫墻體不同形式的熱橋部位現場測量,研究了不同保溫層厚度下的熱橋溫度與熱流密度的變化趨勢,并且進行了冷凝分析,根據熱橋影響范圍和合適的保溫層厚度對熱橋進行保溫層的設計,得到一系列性能參數,為今后自保溫墻體在寒冷地區的推廣以及應用提供了數據支持。 Abstract: With the progress of society, the energy consumption is becoming increasingly prominent, building energy consumption proportion is increasing, in this case, such characteristics of construction is particularly important. Self-thermal insulation wall is a typical representative in the field of building energy saving, but also exposed many shortcomings, such as wall heat loss of thermal bridge, wall cracking the inner surface, condensation and other issues. Through on-site measurement of thermal bridge of wall insulation in different forms, the variation tendency in different temperature and thermal insulation layer thickness on the heat flux are analyzed according to the thermal influence scope and suitable thickness of the insulation layer design of thermal insulation layer and get a series of performance parameters, which provides the data support for the self-thermal wall in cold areas of promotion and application.
    黎昌倫.寒冷地區加氣混凝土自保溫墻體熱工性能研究[J].混凝土與水泥制品,2019(5):69-73. LI C L.Study on Thermal Properties of Autoc laved Aerated Concrete Block Self-thermal Insulation Walls in Cold Region[J].China Concrete and Cement Products,2019(5):69-73.
    附加交叉斜筋與環形鋼筋對RC板抗爆性能的影響
    附加交叉斜筋與環形鋼筋對RC板抗爆性能的影響
    • 周 清1,齊 麟2
    2019年第5期
    摘要
    引用本文
    摘 要:為了研究附加交叉斜筋與環形鋼筋對鋼筋混凝土板(RC板)抗爆性能的影響,采用LS-DYNA軟件對爆炸荷載作用下RC板進行了數值分析。選取典型的RC板抗爆試驗文獻作為參考依據驗證了數值分析方法的正確性,并研究了爆炸荷載作用下,附加交叉斜筋與環形鋼筋的RC單向板與RC雙向板的動力響應與破壞形態。結果表明,選擇合理的材料模型,數值分析結果可以精確地與試驗結果相吻合。附加交叉斜筋與環形鋼筋的單向RC板與雙向RC板可以有效減小板中心最大位移與最大加速度,更加充分發揮受力鋼筋的作用,降低板的破壞程度。附加交叉斜筋與環形鋼筋均可提高RC板的抗爆性能,且提高程度大致相等。 Abstract: In order to study the influence of anti-explosion performance for RC slab with additional cross reinforced and circular reinforced, numerical analysis was carried out for RC slab under blast load using LS-DYNA. The typical experimental literature of RC slab was selected as the reference basis to verify the correctness of numerical analysis method. The dynamic response and failure pattern of RC one-way slab and RC two-way slab with additional cross reinforced and circular reinforced under blast load was studied. The results show that numerical analysis can be exactly in accordance with the experimental results for using reasonable material models. Both one-way slab and two-way slab with additional cross reinforced and circular reinforced can reduce the central max-displacement and max-acceleration effectively, give full play to the role of reinforcement, and decrease the damage of those RC slabs. Both additional cross reinforced and circular reinforced can improve the anti-explosion performance of RC slab and the improvement is roughly equal.
    周清,齊麟.附加交叉斜筋與環形鋼筋對RC板抗爆性能的影響[J].混凝土與水泥制品,2019(5):64-68. ZHOU Q,QI L.The Influence of Additional Cross Reinforcement and Circular Reinforcement on the Anti-explosion Performance of RC Slabs[J].China Concrete and Cement Products,2019(5):64-68.
    FRP筋鋼纖維混凝土梁延性性能研究
    FRP筋鋼纖維混凝土梁延性性能研究
    • 陳升平,馬小霞,盧應發,倪 亮
    2019年第5期
    摘要
    引用本文
    摘 要:以鋼纖維體積率(0、0.5%、1.0%、1.0%/0)以及玻璃纖維增強復合材料筋(GFRP筋)和碳纖維增強復合材料筋(CFRP筋)兩種筋材為試驗變量,進行了6根纖維增強復合材料筋(FRP筋)混凝土構件的受彎性能試驗,用以評價鋼纖維體積率對FRP混凝土構件的延性提升效果。試驗結果表明,隨著鋼纖維摻量的添加,FRP筋混凝土梁的延性指標提升了16%~48%,極限承載力提高了5%~13%,說明鋼纖維的摻加對FRP筋混凝土梁的延性指標和承載力有積極作用。 Abstract: To evaluate the ductility lifting effect of steel fiber volume ratio on FRP concrete members. The flexural behavior tests of six concrete members with FRP bars are carried out by taking the volume ratio of steel fiber (0 and 0.5%) and the ratio of 0 to 1.0%, as well as two kinds of steel bars, GFRP tendons and CFRP tendons, as experimental variables. The test results show that with the increase of steel fiber content, the ductility index of FRP reinforced concrete beams increases by about 16%-48%, and the ultimate bearing capacity increases by 5%-13%. It is shown that the addition of steel fiber has a positive effect on the ductility index and bearing capacity of concrete beams with FRP bars.
    陳升平,馬小霞,盧應發,等.FRP筋鋼纖維混凝土梁延性性能研究[J].混凝土與水泥制品,2019(5):59-63. CHEN S P,MA X X,LU Y F,et al.Research on Ductility of Steel Fiber Concrete Beams Reinforced with FRP Bars[J].China Concrete and Cement Products,2019(5):59-63.
    混凝土用聚乙烯醇纖維和聚丙烯纖維耐堿性能對比分析
    混凝土用聚乙烯醇纖維和聚丙烯纖維耐堿性能對比分析
    • 王天琪1,楊鼎宜1,2,駱靜靜3,沈娟華3
    2019年第5期
    摘要
    引用本文
    摘 要:為了探究聚乙烯醇(PVA)纖維和聚丙烯(PP)纖維應用于混凝土中的穩定性,配制了不同濃度的NaOH溶液來模擬混凝土的堿性環境,同時采用加速腐蝕的方法對兩種纖維進行堿溶液腐蝕處理,分別測試不同時間段兩種纖維的直徑和力學性能,并通過電鏡觀察纖維的表面變化情況。試驗結果表明,隨著浸泡時間的延長,兩種纖維的直徑都有所增加,強度都逐漸減小,但PP纖維的耐堿性能優于PVA纖維;堿溶液濃度越高,對纖維的腐蝕就越嚴重。微觀形貌分析表明,相同條件下,PVA纖維比PP纖維受腐蝕更為嚴重。 Abstract: In order to investigate the stability of polyvinyl alcohol fiber and polypropylene fiber used in concrete, different concentrations of NaOH solution were formulated to simulate the alkaline environment of the concrete, and both fibers were subjected to alkaline solution corrosion treatment by accelerated corrosion. The diameters and mechanical properties of the two fibers were tested at different time periods, and the surface changes of the fibers were observed by electron microscopy. The test results show that as the soaking time prolonged, the diameters of both fibers increased, and the strength decreased gradually. However, the alkali resistance of polypropylene fibers was superior to that of polyvinyl alcohol fibers the higher the concentration of the alkali solution was, the more serious the corrosion. Micromorphology analysis shows that under the same conditions, PVA fibers are more corrosive than PP fibers.
    王天琪,楊鼎宜,駱靜靜,等.混凝土用聚乙烯醇纖維和聚丙烯纖維耐堿性能對比分析[J].混凝土與水泥制品,2019(5):54-58. WANG T Q,YANG D Y,LUO J J,et al.Comparative Analysis on Alkali Resistance Properties of Polyvinyl Alcohol Fiber and Polypropylene Fiber for Concrete[J].China Concrete and Cement Products,2019(5):54-58.
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