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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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    第十期

    粉煤灰對混凝土耐久性的影響研究 ——評《粉煤灰混凝土的耐久性》
    粉煤灰對混凝土耐久性的影響研究 ——評《粉煤灰混凝土的耐久性》
    • 孫紅軍
    2020年第10期
    摘要
    引用本文
    我國在建筑施工行業每年需要消耗大量的水泥,而生產水泥需要消耗大量的資源。粉煤灰是燃煤發電產生的廢棄物,若不能充分利用,粉煤灰的堆積會帶來環境污染。為了提高粉煤灰的利用率,解決上述資源與環境的難題,魯麗華等人編著的《粉煤灰混凝土的耐久性》一書。筆者通過對該書的學習,認為該書從背景概述到試驗研究,再到結論分析,從不同角度分析了在凍融循環、腐蝕環境下粉煤灰混凝土及粉煤灰鋼筋混凝土構件各項性能的發展規律,現簡要總結如下。
    孫紅軍.粉煤灰對混凝土耐久性的影響研究——評《粉煤灰混凝土的耐久性》[J].混凝土與水泥制品,2020(10):96.
    珊瑚-水泥復合膠凝材料性能研究及微觀分析
    珊瑚-水泥復合膠凝材料性能研究及微觀分析
    • 王卓蕾1,2,謝建斌1,3,劉思楠1,張文豪1,趙一錦1
    2020年第10期
    摘要
    引用本文
    摘 ? 要:以10%、20%、30%的珊瑚粉等質量取代水泥制備珊瑚-水泥復合膠凝材料,研究了珊瑚粉對水泥膠凝材料標準稠度用水量、凝結時間、水化放熱量、膠砂強度、電阻率和吸波性能的影響,并用XRD、SEM方法分析了珊瑚-水泥復合膠凝材料的物相和微觀形貌。結果表明:珊瑚粉會使水泥膠凝材料的凝結時間延長,水化放熱量減少,對標準稠度用水量影響不明顯;珊瑚粉對水泥膠凝材料的力學性能不利,但仍能滿足工程建設要求;摻入珊瑚粉后,試件的電阻率下降、導電性能增加、吸波性能降低;珊瑚-水泥復合膠凝材料的主要水化產物與水泥膠凝材料類似,沒有新產物生成。 Abstract: Coral-cement composite cementitious materials were prepared by replacing cement with 10%, 20% and 30% coral powder. The effects of coral powder on water consumption of standard consistency, setting time, hydration heat, flexural strength and compressive strength, resistivity and wave absorbing performance of cement cementitious materials were studied. XRD and SEM were used to analyze the phase and microstructure of coral-cement composite cementitious materials. ?The results show that coral powder prolongs the setting time of cement cementitious materials, reduces the hydration heat, and has no obvious influence on water consumption of standard consistency. Coral powder is unfavorable to the mechanical properties of cement cementitious materials, but it can still meet the needs of engineering construction. After adding coral powder, the resistivity of the specimens decreases, the conductivity increases, and the wave absorbing performance decreases. The main hydration products of coral-cement composite cementitious materials are similar to cement cementitious materials, without new products.?
    王卓蕾,謝建斌,劉思楠,等.珊瑚-水泥復合膠凝材料性能研究及微觀分析[J].混凝土與水泥制品,2020(10):87-90,95. WANG Z L,XIE J B,LIU S N,et al.Study on Properties and Microanalysis of Coral-cement Composite Cementitious Materials[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):87-90,95.
    超硫酸鹽水泥植生多孔混凝土性能試驗研究
    超硫酸鹽水泥植生多孔混凝土性能試驗研究
    • 黃 勁,秦節發,陳 超,石 華,譚建湘,任 政
    2020年第10期
    摘要
    引用本文
    摘 ? 要:選用一種低堿度超硫酸鹽水泥制備了多孔混凝土,研究了不同摻量脫硫石膏對多孔混凝土pH值和力學性能的影響,分析了狗牙根、高羊茅、早熟禾、黑麥草和白喜草在多孔混凝土中的植生情況。結果表明:當脫硫石膏摻量為15%~20%,P·O 52.5水泥摻量為5%時,多孔混凝土的抗壓強度最高;水膠比為0.3時,多孔混凝土的施工性和力學性能最優;脫硫石膏、P·O 52.5水泥和水膠比對多孔混凝土的pH值影響較小。制備的多孔混凝土pH值較低,能夠滿足植物生長需求,其中,高羊茅和白喜草在多孔混凝土中的植生性能最佳。 Abstract: The super sulfate cement with low alkalinity was selected to prepare the eco-porous concrete, the effects of different content of desulfurization gypsum on the pH value and mechanical properties of eco-porous concrete were studied, and the planting performance of bermudagrass, tall fescue, kentucky bluegrass, ryegrass and bahia grass in eco-porous concrete was analyzed. The results show that the compressive strength of eco-porous concrete is the highest when the content of desulfurized gypsum is 15%~20% and the content of P·O 52.5 cement is 5%. When the water-binder ratio is 0.30, the workability and mechanical properties of eco-porous concrete are optimal. The content of desulfurized gypsum, P·O 52.5 cement and water-binder ratio have little influence on the pH value of eco-porous concrete. The prepared eco-porous concrete has a low pH value and can meet the needs of plant growth. Among them, tall fescue and bahia grass have the best planting performance in eco-porous concrete.
    黃勁,秦節發,陳超,等.超硫酸鹽水泥植生多孔混凝土性能試驗研究[J].混凝土與水泥制品,2020(10):91-95. HUANG J,QIN J F,CHEN C,et al.Experimental Study on the Performance of Super Sulphated Cement Eco-porous Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):91-95.
    混凝土回彈儀(2.207J)分段率定計量研究
    混凝土回彈儀(2.207J)分段率定計量研究
    • 魏超琪1,王 磊2,張 鵬1,趙慶航1,賀晶晶3
    2020年第10期
    摘要
    引用本文
    摘 ? 要:研究了混凝土回彈儀鋼砧率定值與其硬度及質量間的關系,確定了一款比較適合中型回彈儀用的輕型鋼砧(率定值為40±1)。結果表明:該輕型鋼砧可有效提升回彈儀檢定周期內常用示值區間段回彈值的重復性、穩定性和準確性,同時,可確?;貜梼x的使用過程處于標準狀態,進而提高回彈法檢測混凝土抗壓強度的精度。 Abstract: Based on the study of the relationship between the setting value of steel anvil and its hardness and weight, a light steel anvil with the setting value of 40±1 was determined. The results show that the light steel anvil can effectively improve the repeatability, stability and accuracy of the rebound value of commonly used indication interval in the verification cycle of the rebound instrument. In addition, it can ensure that the use process of the rebound instrument is in a standard state, thereby improving the accuracy of the rebound method for testing the compressive strength of concrete.
    魏超琪,王磊,張鵬,等.混凝土回彈儀(2.207J)分段率定計量研究[J].混凝土與水泥制品,2020(10):83-86. WEI C Q,WANG L,ZHANG P,et al.Research on the Section Calibration and Measurement of Concrete Rebound Instrument(2.207J)[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):83-86.
    熱重分析法在混凝土碳化深度檢測中的應用
    熱重分析法在混凝土碳化深度檢測中的應用
    • 李 蓓1,2,金南國2,田 野2,金賢玉2,李鑫燚1
    2020年第10期
    摘要
    引用本文
    摘 ? 要:針對現有酚酞試劑法無法精確測定混凝土碳化程度的不足,基于熱重法定量分析CaCO3含量的試驗原理,利用TA-Q500熱重分析儀在原材料相同的條件下對不同水灰比及齡期條件下的混凝土碳化深度進行了檢測,并闡述了該方法的具體操作步驟。結果表明:與酚酞試劑法相比,熱重分析法可以定量分析碳化混凝土中的Ca(OH)2 和CaCO3含量,具有快速、方便的特點,且受環境和人為因素的影響較小,測試結果相對穩定準確。 Abstract: In view of the phenolphthalein method cannot accurately measure the concrete carbonation degree, based on the experimental principle of quantitative analysis of CaCO3 content by thermogravimetric method, the carbonation depth of concrete under different water cement ratio and age conditions was tested by TA-Q500 thermogravimetry analyzer under the same raw materials, and the specific operation steps of the method were described. The results show that compared with the phenolphthalein reagent method, the thermogravimetry method can quantitatively analyze the content of Ca(OH)2 and CaCO3 in carbonated concrete, which has the characteristics of rapidity and convenience, and is less affected by the environment and human factors, and the test results are relatively stable and accurate. ?
    李蓓,金南國,田野,等.熱重分析法在混凝土碳化深度檢測中的應用[J].混凝土與水泥制品,2020(10):80-82,86. LI B,JIN N G,TIAN Y,et al.Application of Thermogravimetric Analysis Method in Detecting Carbonation Depth of Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):80-82,86.
    新舊混凝土疊合面抗剪性能研究
    新舊混凝土疊合面抗剪性能研究
    • 陳甫亮1,胥 卉2,廖楨穎1,王韶纖2,李俊杰1,陳 俊2
    2020年第10期
    摘要
    引用本文
    摘 ? 要:新舊混凝土疊合面的剪切強度是衡量界面黏結性能的最重要指標?;赯形黏結試件剪切試驗,研究了不同疊合層材料、不同界面處理方式、不同槽口形式下的疊合界面抗剪性能。結果表明,UHPC試件表現出較好的界面抗剪能力,其承載力均高于自密實試件。對于槽口構件,槽口連接形式能提高疊合面抗剪承載力,其中梯形槽口對界面抗剪承載力提升效果更為顯著。槽口形式對UHPC材料與C30混凝土界面抗剪能力的影響相較于其對自密實材料與C30混凝土界面抗剪能力的影響更為顯著。對于有錨固鋼筋的試件,增大錨固鋼筋的錨固長度可以提高UHPC材料與C30混凝土界面抗剪能力;對于無錨固鋼筋無槽口試件,氣泡紙粗糙面處理可以改善UHPC試件的變形能力。 Abstract: The shear strength of old and new concrete combined interface is the most important index to measure the interfacial bonding property. Based on the shear test of z-shaped bonding specimens, the shear resistance of composite interface with different laminated materials, different interface treatment methods and different notches was studied. The results show that the UHPC specimens exhibit good interface shear resistance and their bearing capacity is higher than that of self-compacting specimens. For the notched specimens, the notched joint can improve the shear strength of the composite surface, among which the trapezoidal notched joint has more significant effect on the shear strength of the interface. The influence of notch form on the shear resistance of UHPC material and C30 concrete interface is more significant than that of self-compacting material and C30 concrete interface. For the specimens with anchorage reinforcement, increasing the anchorage length of the anchorage reinforcement can improve the shear resistance of the interface between UHPC material and C30 concrete. For non-anchorage steel bar notched specimens, bubble paper rough surface treatment can improve the deformation capacity of UHPC specimens.
    陳甫亮,胥卉,廖楨穎,等.新舊混凝土疊合面抗剪性能研究[J].混凝土與水泥制品,2020(10):75-79. CHEN F L,XU H,LIAO Z Y,et al.Research on the Shear Resistance of Combined Interface of New and Old Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):75-79.
    灰縫厚度對蒸壓加氣混凝土砌塊墻體熱工性能的影響
    灰縫厚度對蒸壓加氣混凝土砌塊墻體熱工性能的影響
    • 肖力光,邢紋浩
    2020年第10期
    摘要
    引用本文
    摘 ? 要:基于Ansys Workbench熱力學模塊對蒸壓加氣混凝土外墻傳熱模式進行了分析,并對研究單元進行建模,確定了模型邊界條件及荷載加載形式。通過對3 mm、20 mm等不同厚度砌筑灰縫進行建模研究,探討了不同灰縫厚度情況下,蒸壓加氣混凝土砌塊墻體溫度的分布情況。結果表明,薄灰縫砌筑可以顯著減少蒸壓加氣混凝土砌塊墻體的“微熱橋效應”,從而降低墻體熱量流失?;铱p散失的熱量占墻體總散失熱量百分比y與灰縫厚度x的關系為:y=0.946x+3.247。 Abstract: Based on the thermodynamics module of Ansys Workbench, the heat transfer mode of the outer wall of autoclaved aerated concrete was analyzed, and the research unit was modeled to determine the boundary conditions of the model and the form of load loading. Through the modeling study of masonry mortar joints with different thickness such as 3 mm and 20 mm, the temperature distribution of autoclaved aerated concrete block walls with different thickness of mortar joints was discussed. The results show that the thin mortar joint masonry mortar plays a positive role in reducing the "micro-thermal bridge effect" of autoclaved aerated concrete block wall and reducing the heat loss of wall. The relationship between the ratio of heat loss from ash joints to total heat loss from wall(y) and the thickness of mortar joints (x) is y=0.946x+3.247.
    肖力光,邢紋浩.灰縫厚度對蒸壓加氣混凝土砌塊墻體熱工性能的影響[J].混凝土與水泥制品,2020(10):72-74,79. XIAO L G,XING W H.Effect of Different Thickness Mortar Joints on Thermal Performance of Autoclaved Aerated Concrete Block Wall[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):72-74,79.
    預制夾心混凝土墻板熱工性能研究
    預制夾心混凝土墻板熱工性能研究
    • 張佳陽,路國忠,郭振雷,尹志芳
    2020年第10期
    摘要
    引用本文
    摘 ? 要:通過研究不同種類及厚度的夾心保溫材料、拉結件布置數量及保溫板縫隙寬度,分析了其對預制夾心混凝土墻板傳熱系數的影響。結果表明:夾心層保溫材料導熱系數越小、夾心層越厚,預制夾心混凝土墻板傳熱系數越??;非金屬拉結件對夾心墻板傳熱系數的影響約為1.3%~3.2%,夾心層厚度越厚,墻板傳熱系數越小,拉結件影響越大;夾心層保溫板采用定制式保溫板可有效降低保溫板縫隙對預制墻板傳熱系數的影響,計算結果可為預制夾心墻板的熱工設計提供依據。 Abstract: By studying the sandwich insulation layer of different types and thicknesses, the number of connectors and the gaps of insulation boards, the effects of the heat transfer coefficient on prefabricated concrete sandwich wallboard were analyzed. The results show that the lower thermal conductivity and the thicker the sandwich insulation layer, the smaller the heat transfer coefficient of prefabricated concrete sandwich wallboard. The effect of non-metallic connectors on the heat transfer coefficient of the sandwich wallboard is about 1.3%~3.2%, and the thicker sandwich insulation layer, the samller the heat transfer coefficient of the sandwich wallboard, and the greater the influence of connectors. Customized sandwich wallboard, which can effectively reduce the effect of insulation board gap on the heat transfer coefficient of prefabricated sandwich wallboard. The calculation results can provide an evidence for the thermal design of prefabricated sandwich wallboard.
    張佳陽,路國忠,郭振雷,等.預制夾心混凝土墻板熱工性能研究[J].混凝土與水泥制品,2020(10):69-71. ZHANG J Y,LU G Z,GUO Z L,et al.Study on Thermal Performance of Prefabricated Concrete Sandwich Wallboard[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):69-71.
    高性能輕質混凝土復合外墻圍護部品 研究與應用
    高性能輕質混凝土復合外墻圍護部品 研究與應用
    • 孫源澤1,蔣勤儉1,劉 昊2,呂麗萍2,黃清杰1
    2020年第10期
    摘要
    引用本文
    摘 ? 要:裝配式鋼結構住宅建筑正逐漸成為我國裝配式建筑的重要組成部分,其外墻圍護部品很難同時滿足輕質、防水、防火、耐久以及與門窗、保溫集成一體等高性能要求,限制了其快速、高質量發展。為解決鋼結構住宅外墻圍護部品性能不高的問題,通過研究外墻圍護部品的材料、墻板、配件以及建筑、結構設計等,研發了一種滿足鋼結構住宅高性能要求的輕質混凝土復合外墻圍護部品,并成功應用到了相應的工程中。 Abstract: The prefabricated steel structure residential buildings are gradually becoming an important part of prefabricated buildings in China. However, it is difficult to meet all high requirements of lightweight, waterproofing, fire prevention, durability and integration with doors, windows and insulating layer, which limits the rapid and high-quality development of steel structure residential buildings. In order to solve the problems of low performance, through studying the materials, accessories, construction and structural design of external wall enclosure components, a new lightweight concrete composite exterior wall enclosure component that meets the high performance requirements of steel structure residential buildings is developed, and successfully applied to corresponding projects.
    孫源澤,蔣勤儉,劉昊,等.高性能輕質混凝土復合外墻圍護部品研究與應用[J].混凝土與水泥制品,2020(10):65-68. SUN Y Z,JIANG Q J,LIU H,et al.Research and Application of High Performance Lightweight Concrete Composite Exterior Wall Enclosure Components[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):65-68.
    高溫后玄武巖纖維混凝土力學性能試驗研究
    高溫后玄武巖纖維混凝土力學性能試驗研究
    • 李 曈1,張曉東1,劉華新1,陳 明2,范錦澤1,陳 晨1
    2020年第10期
    摘要
    引用本文
    摘 ? 要:研究了高溫作用下素混凝土、玄武巖纖維混凝土、玄武巖-高吸水樹脂混凝土及玄武巖-纖維素混雜纖維混凝土的力學性能,建立了高溫作用后混凝土的抗壓強度預測模型。結果表明:纖維的摻入能夠提高混凝土的耐高溫性能;對于抗壓強度,玄武巖-纖維素混雜纖維混凝土的抗壓強度值最高,400 ℃時,其抗壓強度相較素混凝土提高了36.3%;對于抗折強度,玄武巖和高吸水樹脂混摻對混凝土抗折強度的提升效果最優;建立的高溫作用下混凝土抗壓強度預測模型的精度較高。 Abstract: The mechanical properties of plain concrete, basalt fiber concrete, basalt-superabsorbent resin concrete and basalt-cellulose hybrid fiber concrete after high temperature were studied, and the prediction models of compressive strength of concrete after high temperature were established. The results show that the addition of fiber can effectively improve the high temperature resistance of concrete. For compressive strength, the basalt-cellulose hybrid fiber concrete has the highest compressive strength, and at 400 ℃, its compressive strength is 36.3% higher than that of plain concrete. For flexural strength, the mixing of basalt and superabsorbent resin has the best effect on the improvement of the flexural strength of concrete. The established prediction models of compressive strength of concrete under high temperature have high accuracy.
    李曈,張曉東,劉華新,等.高溫后玄武巖纖維混凝土力學性能試驗研究[J].混凝土與水泥制品,2020(10):61-64. LI T,ZHANG X D,LIU H X,et al.Experimental Study on Mechanical Properties of Basalt Fiber Concrete After High Temperature[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):61-64.
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