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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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    第一期

    再生骨料黏附砂漿含量對人工成孔透水混凝土抗凍性的影響
    再生骨料黏附砂漿含量對人工成孔透水混凝土抗凍性的影響
    • 臧旭航1,朱平華1,王新杰1,陳春紅1,劉 惠1,許 鳴2
    2021年第1期
    摘要
    引用本文
    摘 ? 要:研究了不同凍融工況下黏附砂漿含量對高強再生透水混凝土抗凍耐久性的影響,并用SEM對其微觀機理進行了分析。結果表明,300次凍融循環后,以相對動彈性模量不低于60%和抗壓強度損失率不高于25%為失效準則,確定了再生粗骨料黏附砂漿的界限含量分別為41.19%和43.89%。在設計使用年限分別為100年、50年和30年的嚴寒地區高度飽水條件下,再生粗骨料最大黏附砂漿含量分別為33.00%、38.94%和40.27%。 Abstract: The influence of attached mortar content on the frost resistance of high strength recycled pervious concrete under different freeze-thaw conditions was studied, and the microscopic mechanism was analyzed by SEM. The results show that after 300 freezing-thawing cycles, taking the relative dynamic elastic modulus of not less than 60% and the loss rate of compressive strength not more than 25% as the failure criterion, the limit content of recycled coarse aggregate attached mortar is determined to be 41.19% and 43.89%, respectively. When the designed service life is 100 years, 50 years and 30 years respectively, the maximum attached mortar content of recycled coarse aggregate applied for structural concrete is 33.00%, 38.94% and 40.27%, respectively.
    臧旭航,朱平華,王新杰,等.再生骨料黏附砂漿含量對人工成孔透水混凝土抗凍性的影響[J].混凝土與水泥制品,2021(1):80-84,99. ZANG X H,ZHU P H,WANG X J,et al.Effect of Recycled Aggregate Attached Mortar Content on Frost Resistance of Artificial Porous Pervious Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):80-84,99.
    不同機制砂微觀形貌和膠砂性能研究
    不同機制砂微觀形貌和膠砂性能研究
    • 孫星海1,劉 澤1,王軍偉2,姜啟衎1
    2021年第1期
    摘要
    引用本文
    摘 ? 要:為更好研究機制砂的合理應用,選取了3種不同巖性的機制砂,通過分級篩分后調配成Ⅱ區中砂,設計了三種不同級配的機制砂。研究了不同機制砂的化學組成、礦物組成和微觀形貌,以及不同機制砂對膠砂性能的影響。研究表明:不同機制砂顆粒的長徑比和圓形度有一定的差異,個別粒級的參數差異較大;級配對鈣基機制砂膠砂強度影響沒有硅基機制砂顯著;細度模數較大時,鈣基機制砂膠砂強度大于硅基機制砂。 Abstract: In order to study the reasonable application of machine-made sands, 3 kinds of machine-made sands with different lithology were selected and mixed into the middle sands of Area Ⅱ through classification and screening, and three different gradations of machine-made sands were prepared. The influence on the properties of mortar of the chemical composition, mineral composition, and micro-morphology of machine-made sands, different machine-made sands were analyzed. The results indicate that the slenderness ratio and roundness of different machine-made sands are different, and the parameters of individual grades are also different. The effect of gradation on the strength of silicon-based sands is more significant than that of calcium-based sands. When the fineness modulus is larger, the strength of calcium-based machine-made sand is higher than that of silicon-based machine-made sand.
    孫星海,劉澤,王軍偉,等.不同機制砂微觀形貌和膠砂性能研究[J].混凝土與水泥制品,2021(1):85-89. SUN X H,LIU Z,WANG J W,et al.Study on Microstructure and Mortar Properties of Different Machine-made Sands[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):85-89.
    堿礦渣-粉煤灰砂漿的耐高溫性能及孔結構研究
    堿礦渣-粉煤灰砂漿的耐高溫性能及孔結構研究
    • 高 帥1,吳岳峻2,唐海濤3,汪峻峰2,4,魯劉磊3
    2021年第1期
    摘要
    引用本文
    摘 ? 要:研究了不同粉煤灰摻量的堿礦渣-粉煤灰砂漿在20 ℃、200 ℃、400 ℃、600 ℃、800 ℃下力學性能的變化規律,并通過X射線衍射(XRD)、紅外光譜(FTIR)和壓汞法(MIP)分析了漿體的水化及孔結構。結果表明:摻粉煤灰可優化漿體的孔徑分布,降低內部孔隙率,提高砂漿的耐高溫性能,粉煤灰的適宜摻量為30%~50%;200 ℃時,摻30%粉煤灰砂漿的抗壓強度最高,較20 ℃時提高了49.3%;600 ℃時,發生了固相反應,C-S-H凝膠減少,少害孔(20~50 nm)數量增加,砂漿保持了與20 ℃相當的抗壓強度;800 ℃時,漿體生成大量鈣黃長石,砂漿的抗壓強度為20 ℃時的11.5%,基本失去工作性能。綜合考慮,堿礦渣-粉煤灰砂漿的使用溫度不宜超過600 ℃。 Abstract: The mechanical properties of alkali slag-fly ash mortar with different fly ash content at 20 ℃, 200 ℃, 400 ℃, 600 ℃, 800 ℃ were studied, and the hydration and pore structure were examined by using XRD, FTIR and MIP. The results show that adding fly ash can optimize the pore size distribution of the slurry, reduce the internal porosity, and improve the high-temperature resistance of the mortar, and the suitable blending amount is 30%~50%. At 200 ℃, the compressive strength of 30% fly ash mortar is the highest, which is 49.3% higher than that at 20 ℃. At 600 ℃, the mortar maintains the same compressive strength as 20 ℃, but the solid phase reaction occurs in the slurry, the number of less harmful pores (20~50 nm) increases and the C-S-H decreases. At 800 ℃, a large amount of calcium feldspar is formed in the slurry, and the compressive strength of the mortar is 11.5% of that at 20 ℃, which basically loses the working performance. Comprehensive consideration, the use temperature of alkali slag-fly ash mortar should not exceed 600 ℃.
    高帥,吳岳峻,唐海濤,等.堿礦渣-粉煤灰砂漿的耐高溫性能及孔結構研究[J].混凝土與水泥制品,2021(1):90-94. GAO S,WU Y J,TANG H T,et al. Study on High Temperature Resistance and Pore Structure of Alkali Slag-fly Ash Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):90-94.
    蒸養機制砂混凝土的毛細吸水特性
    蒸養機制砂混凝土的毛細吸水特性
    • 貢鑫茹1,2,3,李 東1,耿 健2,3
    2021年第1期
    摘要
    引用本文
    貢鑫茹,李東,耿健.蒸養機制砂混凝土的毛細吸水特性[J].混凝土與水泥制品,2021(1):95-99. GONG X R,LI D,GENG J.Water Absorption of Steam Curing Machine-made Sand Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):95-99.
    碳纖維網與短切絲協同增強混凝土梁試驗研究
    碳纖維網與短切絲協同增強混凝土梁試驗研究
    • 雷小磊,黃國棟,崔玉龍
    2021年第1期
    摘要
    引用本文
    摘 ? 要:分析了碳纖維網的密度、層數與預埋位置以及碳纖維短切絲的長度與摻量對混凝土梁抗折性能的影響。結果表明:預埋碳纖維網與摻入碳纖維短切絲均能顯著提升混凝土梁的抗折性能;碳纖維網密度為20 mm×20 mm時,距混凝土梁上表面125 mm時的增強效果最佳;雙層碳纖維網的增強效果明顯優于單層碳纖維網;同時摻入碳纖維短切絲可繼續提升混凝土梁的抗折性能,且摻量2%、長度6 mm的碳纖維短切絲提升效果最佳。 Abstract: The weakness of flexural and crack resistance has seriously affected the wide application of concrete in engineering. The influence of the density, the number of layers and the embedded position of carbon fiber mesh, and the length and content of carbon fiber short-cut wire on the flexural performance of concrete beams were analyzed. The results show that both the embedded carbon fiber mesh and the incorporation of carbon fiber short-cut wire can significantly improve the flexural performance of concrete beams. When the density of carbon fiber mesh is 20 mm× 20 mm, the reinforcement effect is the best when it is 125 mm away from the upper surface of the concrete beam. The reinforcement effect of adding double carbon fiber mesh is better than that of single layer. At the same time, adding carbon fiber short-cut wire can continue to improve the flexural performance of concrete beam, and 2% content of carbon fiber short-cut wire with the length of 6 mm is the best.
    雷小磊,黃國棟,崔玉龍.碳纖維網與短切絲協同增強混凝土梁試驗研究[J].混凝土與水泥制品,2021(1):61-66. LEI X L,HUANG G D,CUI Y L.Experimental Study on Reinforced Concrete Beam with Carbon Fiber Mesh and Short-cut Wire[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):61-66.
    鋼板-超高性能混凝土梁有限元分析研究
    鋼板-超高性能混凝土梁有限元分析研究
    • 趙 明1,黃飛新1,劉瓊偉2,邱明紅2,黃 政2,胡偉業2,邵旭東2
    2021年第1期
    摘要
    引用本文
    摘 ? 要:為了研究鋼板-超高性能混凝土(UHPC)組合梁的抗彎性能,在鋼板-UHPC-T組合梁方案下,以鋼板厚度、鋼板強度等級、UHPC抗拉強度和UHPC極限拉應變為參數,利用ABAQUS軟件進行了有限元分析。結果表明:鋼板厚度和鋼板強度等級的改變對組合梁抗彎承載力的提高作用較為明顯;UHPC抗拉強度的提高可以適當提高開裂荷載;UHPC極限拉應變的增加可適當提高梁體的延性。 Abstract: In order to study the flexural performance of steel plate-ultra-high performance concrete(UHPC) composite beams, under the plan of steel plate-UHPC-T composite beams, the finite element analysis was carried out with ABAQUS finite element analysis software, taking steel plate thickness, steel plate strength grade, UHPC tensile strength and UHPC ultimate tensile strain as parameters. The results show that the change of steel plate thickness and steel plate strength grade have obvious effects on the improvement of the flexural bearing capacity of composite beams. The increase of UHPC tensile strength can appropriately increase the cracking load, and the increase of UHPC ultimate tensile strain can appropriately improve the ductility of the beam.
    趙明,黃飛新,劉瓊偉,等.鋼板-超高性能混凝土梁有限元分析研究[J].混凝土與水泥制品,2021(1):67-71. ZHAO M,HUANG F X,LIU Q W,Finite Element Analysis of Steel Plate-ultra-high Performance Concrete Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):67-71.
    裝配式大板結構老舊住宅樓的修復加固研究
    裝配式大板結構老舊住宅樓的修復加固研究
    • 厲見芬1,李書進1,肖耀軍2
    2021年第1期
    摘要
    引用本文
    摘 ? 要:以常州市某老舊小區的28棟裝配式大板結構住宅樓為例,在原結構存在缺陷和工程造價、施工工期、對住戶的影響等多重技術難題條件下,基于房屋滲漏現狀和檢測報告,進行了原因分析,提出了合理的修復加固方案。研究成果對類似老舊小區的綜合性能提升和改造關鍵技術有一定的參考價值。 Abstract: Taking 28 residential buildings with prefabricated large panel structure in an old residential in Changzhou as an example, and considering multiple technical problems such as defects of original structure, project cost, construction period and impact on households, based on housing leakage status and inspection report, the causes are analyzed, and reasonable restoration and reinforcement program is put forward. The research results have a certain reference value for the improvement of comprehensive performance and the key technology of transformation in similar old residential areas.
    厲見芬,李書進,肖耀軍.裝配式大板結構老舊住宅樓的修復加固研究[J].混凝土與水泥制品,2021(1):72-74,79. LI J F,LI S J,XIAO Y J.Research on Restoration and Reinforcement of Old Residential Buildings with Prefabricated Large Panel Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):72-74,79.
    可再分散乳膠粉及?;⒅閷ε菽炷列阅艿挠绊? />
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                          <a href="/product/3457.html" target="_parent" class="title"><i class="iconfont12"></i>可再分散乳膠粉及?;⒅閷ε菽炷列阅艿挠绊?/a>
                        
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                                      <span class="attrValue"><i class="iconfont2"></i> 馬建斌</span>
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                                      <span class="attrValue"> 2021年第1期</span>
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                            <div class="zhai1"><i class="iconfont11"></i>引用本文</div>
                            <span class="newMs">摘 ? 要:泡沫混凝土(FC)作為一種輕質多孔材料具有優良的保溫隔熱效果,將其用作建筑保溫墻體材料可以有效降低建筑能耗。利用可再分散乳膠粉(RDL)和?;⒅椋℅B)改性FC,研究了RDL和GB單獨取代以及RDL和GB共同取代快硬硫鋁酸鹽水泥對FC干密度、抗壓強度、導熱系數和拉伸黏結強度的影響。結果表明:RDL可以顯著提高FC的拉伸黏結強度,GB可以顯著降低FC的干密度和導熱系數;RDL和GB共同取代水泥時更有利于改善FC的綜合性能;RDL和GB總摻量為3%時改善效果最佳, 此時FC的干密度為311.7 kg/m3,抗壓強度為0.42 MPa,導熱系數為0.078 3 W/(m·K),拉伸黏結強度為0.113 9 MPa。

Abstract: As a kind of lightweight porous material, foam concrete(FC) has excellent thermal insulation effect and can be used as building insulation wall material to effectively reduce building energy consumption. Using redispersible latex powder(RDL) and glass beads(GB) to modify FC, and the effect of RDL and GB alone substitution and RDL and GB joint substitution of rapid hardening sulphoaluminate cement on the dry density, compressive strength, thermal conductivity and tensile bond strength of FC were explored. The results show that RDL can significantly improve tensile bond strength of FC, and GB can significantly reduce dry density and thermal conductivity of FC. When RDL and GB replace cement together, it is more conducive to improve the comprehensive performance of FC. The improvement effect is best when the total content of RDL and GB is 3%. At this time, the dry density, compressive strength, thermal conductivity and tensile bond strength of FC are 311.7 kg/m3, 0.42 MPa, 0.078 3 W/(m·K), and 0.113 9 MPa, respectively.
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                                      <span class="attrValue3"> 馬建斌.可再分散乳膠粉及?;⒅閷ε菽炷列阅艿挠绊慬J].混凝土與水泥制品,2021(1):75-79.
MA J B.Influence of Redispersible Latex Powder and Glass Beads on the Properties of Foam Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):75-79.</span>
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    海水凍融侵蝕下PVA-納米SiO2混凝土性能試驗研究
    • 孔令康1,2,孫 敏1,2
    2021年第1期
    摘要
    引用本文
    摘 ? 要:采用快凍法研究了海水凍融環境下PVA纖維和納米SiO2對混凝土抗凍性能的影響。結果表明:每25次凍融循環結束后,不同類型混凝土的相對動彈性模量和抗壓強度剩余比都有不同程度的下降;PVA纖維和納米SiO2均能提升混凝土的抗凍性能;單摻PVA纖維或納米SiO2試驗組的抗凍性普遍低于PVA-納米SiO2混摻試驗組;混摻0.1% PVA纖維和1.0%納米SiO2試驗組的抗凍性最好。 Abstract: The effect of PVA fiber and nano-SiO2 on the frost resistance of concrete under the seawater freeze-thaw erosion was studied by the rapid freezing method. The results show that after every 25 freeze-thaw cycles, the relative dynamic elastic modulus and compressive strength residual ratio of various types of concrete decrease to varying degrees. Both PVA fiber and nano-SiO2 can improve the frost resistance of concrete. The frost resistance of the PVA fiber or nano-SiO2 test group is generally lower than that of the PVA-nano-SiO2 mixed test group. The frost resistance of the test group mixed with 0.1% PVA fiber and 1.0% nano-SiO2 is the best.
    孔令康,孫敏.海水凍融侵蝕下PVA-納米SiO2混凝土性能試驗研究[J].混凝土與水泥制品,2021(1):50-53. KONG L K,SUN M.Experimental Study on the Performance of PVA-nano-SiO2 Concrete Under the Seawater Freeze-thaw Erosion[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):50-53.
    竹葉纖維混凝土工作性和力學性能試驗研究
    竹葉纖維混凝土工作性和力學性能試驗研究
    • 王貴忠
    2021年第1期
    摘要
    引用本文
    摘 ? 要:研究了不同摻量(0、0.3%、0.5%、0.7%、0.9%和1.1%)的竹葉纖維對混凝土工作性和力學性能的影響。結果表明:隨著竹葉纖維摻量的增加,混凝土的坍落度逐漸降低;混凝土吸水率隨著竹葉纖維摻量增加而增加;竹葉纖維的摻入對混凝土抗壓強度不利,但有利于提高混凝土的劈裂抗拉強度和抗折強度;綜合考慮各種因素,建議竹葉纖維的最佳摻量取0.7%。 Abstract: The effects of bamboo leaf fiber with different content(0, 0.3%, 0.5%, 0.7%, 0.9% and 1.1%) on the workability and mechanical properties of concrete were studied. The results show that with the increase of bamboo leaf fiber content, the slump of concrete gradually decreases. The water absorption rate of concrete increases with the increase of bamboo leaf fiber content. The incorporation of bamboo leaf fiber is unfavorable to the compressive strength of concrete, but it can improve the splitting tensile strength and flexural strength of concrete. Considering various factors, it is recommended that the optimal content of bamboo leaf fiber is 0.7%.
    王貴忠.竹葉纖維混凝土工作性和力學性能試驗研究[J].混凝土與水泥制品,2021(1):54-56. WANG G Z.Experimental Research on Workability and Mechanical Properties of Bamboo Leaf Fiber Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):54-56.
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