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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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    第三期

    再生細骨料干混砂漿力學性能試驗研究
    再生細骨料干混砂漿力學性能試驗研究
    • 高 琦1,2,3,肖建莊1,趙艷娜2,3,王浩通2,3,王 媛2,3
    2021年第3期
    摘要
    引用本文
    摘 ? 要:利用含紅磚的再生細骨料100%替代天然砂,制備生態干混砂漿,研究了用水量、再生粉料摻量和外加劑摻量對干混砂漿力學性能的影響。結果表明:當再生粉料和外加劑摻量不變時,砂漿強度隨著用水量的增大而降低,但56 d強度增長率反而增大;當再生粉料摻量和用水量不變時,外加劑摻量的增加對砂漿各齡期的強度均有負面影響;當外加劑摻量和用水量不變時,再生粉料摻量為20%時,對應的砂漿強度最大,低于或高于此摻量均會使砂漿強度降低;含紅磚再生細骨料干混砂漿的后期強度(56 d)仍有較大提升空間。 Abstract: The dry mixed mortar was prepared with 100% recycled fine aggregate containing crushed red brick instead of natural sand. The effects of different water addition, recycled powder content and admixture content on the mechanical properties of dry mixed mortar were studied. The results show that when the recycled powder content and admixture content are constant, the strength of the mortar decreases with the increase of water addition, while the growth rate of 56 d strength increases. When the recycled powder content and the water addition remain unchanged, the increase of admixture content has a negative impact on the strength of the mortar at all ages. When the admixture content and the water addition remain unchanged, the mortar with 20% recycled powder has the highest strength, and the strength of the mortar is reduced when the content is lower or higher than 20%. There is still a large increase space in the late strength (56 d) of dry mixed mortar with red brick recycled fine aggregate.
    高琦,肖建莊,趙艷娜,等.再生細骨料干混砂漿力學性能試驗研究[J].混凝土與水泥制品,2021(3):93-96. GAO Q,XIAO J Z,ZHAO YN,et al.Experimental Study on Mechanical Properties of Dry Mixed Mortar with Recycled Fine Aggregate[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):93-96.
    預包漿再生骨料自密實混凝土力學與抗氯離子滲透性研究
    預包漿再生骨料自密實混凝土力學與抗氯離子滲透性研究
    • 金寶宏,宋牧原,謝 鑫,曹鑫鋮
    2021年第3期
    摘要
    引用本文
    摘 ? 要:研究了再生粗骨料替代率和骨料包漿對自密實再生混凝土力學性能和抗氯離子滲透性的影響。結果表明:當再生粗骨料替代率分別為30%、60%、100%時,與未包漿再生骨料混凝土相比,預包漿再生骨料混凝土的坍落擴展度分別提高了0.76%、3.33%、5.17%,抗壓強度分別提高了5.9%、3.2%、6.1%,劈裂抗拉強度分別提高了5.2%、11.2%、18.2%;隨著再生粗骨料替代率的增加,混凝土的電通量值增大,當再生粗骨料替代率分別為30%、60%、100%時,與未包漿再生骨料混凝土相比,預包漿再生骨料混凝土的電通量值分別下降了16.7%、22.9%、8.6%;骨料經過包漿處理后,改善了自密實再生混凝土的力學性能及抗氯離子滲透性。 Abstract: The effects of recycled coarse aggregate replacement rate and aggregate grouting on the mechanical properties and resistance to chloride ion permeability of self-compact recycled concrete were studied. The results show that when the replacement rates of recycled coarse aggregate are 30%, 60% and 100%, compared with the ungrouted concrete, the slump-flow expansion of the grouted concrete are increased respectively by 0.76%, 3.33% and 5.17%, the compressive strength of the grouted concrete are increased respectively by 5.9%, 3.2% and 6.1%, the split tensile strength of the grouted concrete are increased respectively by 5.2%, 11.2% and 18.2%. With the increase of replacement rate of recycled coarse aggregate, the concrete electric flux value increases. When the replacement rates of recycled coarse aggregate are 30%, 60% and 100%, the electric flux values of the grouted recycled concrete decrease respectively by 16.7%, 22.9% and 8.6% compared with ungrouted concrete. The mechanical properties and resistance to chloride ion permeability of the self-compacting recycled concrete are improved after the aggregates are grouted.
    金寶宏,宋牧原,謝鑫,等.預包漿再生骨料自密實混凝土力學與抗氯離子滲透性研究[J].混凝土與水泥制品,2021(3):97-100. JIN B H,SONG M Y,XIE X,et al.Study on Mechanical Properties and Resistance to Chloride Ion Permeability of Self-compacting Concrete with Pre-grouted Recycled Aggregate[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):97-100.
    預應力混凝土鋼管桁架疊合板的研究與應用
    預應力混凝土鋼管桁架疊合板的研究與應用
    • 郭 健1,吉 成2,金如元1,董嘉林1
    2021年第3期
    摘要
    引用本文
    摘 ? 要:預應力混凝土鋼管桁架疊合板是一種新型疊合板,具有質量輕、承載能力強、抗裂性能好以及生產效率高等優點。以江蘇省企業標準設計圖集《預應力混凝土鋼管桁架疊合板》的編制為背景,介紹了該產品的計算、構造相關規定及生產、制作相關要求,分析了該產品的特點,并提出了下一步研究方向。 Abstract: Prestressed concrete composite slab with grouted steel pipe trusses is a new type of composite plate, which has the advantages of light weight, strong bearing capacity, good crack resistance and high production efficiency. Based on the compilation of Jiangsu Province enterprise standard design atlas Prestressed Concrete Composite Slab with Grouted Steel Pipetrusses, the calculation, construction and production requirements of the product are introduced, the characteristics of the product is analyzed, and the next research direction is put forward.
    郭健,吉成,金如元,等.預應力混凝土鋼管桁架疊合板的研究與應用[J].混凝土與水泥制品,2021(3):66-68,75. GUO J,JI C,JIN R Y,et al.Research and Application of Prestressed Concrete Composite Slabs with Grouted Steel Pipe Trusses[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):66-68,75.
    地鐵車站疊合式墻板收縮裂縫控制技術 研究進展
    地鐵車站疊合式墻板收縮裂縫控制技術 研究進展
    • 劉 毅1,潘 清1,張明亮2,劉家彬2,龐超明3,秦鴻根3
    2021年第3期
    摘要
    引用本文
    摘 ? 要:整體裝配式地下車站疊合式墻板存在大面積預制混凝土板與現澆混凝土如何有機結合、解決現澆混凝土裂縫和墻體滲漏的問題,這與傳統現澆混凝土施工工藝存在較大差異,其具體實施過程中將面臨很多新的結構、材料和施工技術方面的問題。針對某城市軌道交通地鐵車站建設的需要,基于現有大面積混凝土收縮裂縫和新老混凝土約束裂縫現狀和控制技術研究成果,從結構設計、混凝土材料、施工技術三方面,探討并提出了地下車站整體裝配式疊合墻板裂縫控制的有效措施。 Abstract: The integrally assembled underground station laminated wall panel has the problems of how to organically combine the large area of precast concrete slab and cast-in-place concrete, and how to solve the problems of cast-in-place concrete cracks and wall leakage, which is different from the traditional cast-in-place concrete construction process. During its specific implementation process, it will face many new structural, material and construction technology issues. In view of the needs of the construction of a certain urban rail transit subway station, based on the existing large-area concrete shrinkage cracks and the new and old concrete restraint cracks status and control technology research results, from the three aspects of structural design, concrete materials, construction technology, the underground stations effective measures for crack control of integrally assembled laminated wall panels are discussed and put forward.
    劉毅,潘清,張明亮,等.地鐵車站疊合式墻板收縮裂縫控制技術研究進展[J].混凝土與水泥制品,2021(3):69-75. LIU Y,PAN Q,ZHANG M L,et al.Research Progress of Shrinkage Crack Control Technology of Laminated Wall Panel in Subway Station[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):69-75.
    糧食側壓力作用下密肋復合墻板肋格單元數值模擬
    糧食側壓力作用下密肋復合墻板肋格單元數值模擬
    • 丁永剛,王浩然,趙金全,劉 強,許啟鏗
    2021年第3期
    摘要
    引用本文
    摘 ? 要:在已有試驗基礎上,進行了基于內聚力模型的密肋復合墻板靜力加載全過程有限元分析,研究了密肋復合墻板結構在糧食側壓力作用下的受力機理。結果表明:黏結界面開裂后,基于內聚力模型的密肋復合墻板在協同受力作用下表現出“拱”破壞形式;黏結界面損傷主要分布在跨中板底及板頂與邊肋梁、柱接觸區域,損傷及位移模擬結果與試驗結果一致;基于內聚力模型的密肋復合墻板具有與矩形雙向板相似的塑性鉸線破壞特征,驗證了內聚力模型的合理性,為糧食平房倉密肋復合墻板的結構計算分析提供了參考。 Abstract: On the basis of the existing tests, the finite element analysis of the whole process of static loading of multi-ribbed composite wall was carried out based on the cohesion model, and the mechanical mechanism and the finite element calculation method of multi-ribbed composite wall structure under the lateral pressure of grain were studied. The results show that after the interface cracks, the ribbed composite wall based on cohesion model shows “arch” failure mode under the synergistic force. The damage of the bond interface is mainly distributed in the area between the bottom and top of the mid-span plate with the side rib-beam and rib-column. Based on the cohesive model, the multi-ribbed composite wall has similar failure characteristics of yield line to the rectangular two-way plate, which verifies the rationality of the cohesive model, ?and provides a reference for the calculation and analysis of the multi-ribbed composite wall board structure in storehouse.
    丁永剛,王浩然,趙金全,等.糧食側壓力作用下密肋復合墻板肋格單元數值模擬[J].混凝土與水泥制品,2021(3):76-81. DING Y G,WANG H R,ZHAO J Q,et al.Numerical Simulation of Multi-ribbed Composite Wall Cells Under Lateral Pressure of Grain[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):76-81.
    爆炸沖擊載荷下鋼板-混凝土組合結構的動態性能和破壞機理研究進展
    爆炸沖擊載荷下鋼板-混凝土組合結構的動態性能和破壞機理研究進展
    • 秦彥帥1,曲艷東1,2,李繼野2,張瑞雪1,于 躍1
    2021年第3期
    摘要
    引用本文
    秦彥帥,曲艷東,李繼野,等.爆炸沖擊載荷下鋼板-混凝土組合結構的動態性能和破壞機理研究進展[J].混凝土與水泥制品,2021(3):82-87. QIN Y S,QU Y D,LI Ji-ye,et al.Research Progress on Dynamic Performances of Steel Plate-concrete Composite Structures Under Blast Loads[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):82-87.
    不同截面形式高強混凝土剪力墻抗震性能研究
    不同截面形式高強混凝土剪力墻抗震性能研究
    • 馬 蕓1,楊鵬輝2
    2021年第3期
    摘要
    引用本文
    馬蕓,楊鵬輝.不同截面形式高強混凝土剪力墻抗震性能研究[J].混凝土與水泥制品,2021(3):88-92. MA Y,YANG P H.Study on the Seismic Performance of High Strength Concrete Shear Walls With Different Cross Sections[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):88-92.
    納米SiO2對摻污泥焚燒灰水泥膠砂性能的影響
    納米SiO2對摻污泥焚燒灰水泥膠砂性能的影響
    • 汪洪菊
    2021年第3期
    摘要
    引用本文
    摘 ? 要:研究了納米SiO2對污泥焚燒灰-水泥復合膠凝體系性能的影響,并對其水化程度進行了分析。結果表明:隨著污泥焚燒灰摻量的增加,復合膠凝體系的標準稠度用水量增加、凝結時間延長,水泥膠砂流動度降低、抗壓和抗折強度降低;納米SiO2的摻入在一定程度上縮短了復合膠凝體系的凝結時間,提高了水泥膠砂的強度,但對工作性不利;摻入納米SiO2后,復合膠凝體系7 d內的化學結合水生成量和生成速率較高,納米SiO2對復合膠凝體系早期水化影響較大。 Abstract: The influence of nano-SiO2 on the performance of sludge incineration ash-cement composite cementitious system was studied, and its hydration degree was analyzed. The results show that with the increase of sludge incineration ash content, the standard consistency water requirement of the composite cementitious system increases, the setting time is prolonged, the fluidity of the cement mortar decreases, and the compressive and flexural strengths decrease. The incorporation of nano-SiO2 shortens the setting time of the composite cementitious system to a certain extent and improves the strength of cement mortar, but it is not good for workability. After adding nano-SiO2, the amount of chemically bound water and the rate of formation within 7 days of the composite cementitious system are higher, which shows that nano-SiO2 has a great influence on the early hydration of the composite cementitious system.
    汪洪菊.納米SiO2對摻污泥焚燒灰水泥膠砂性能的影響[J].混凝土與水泥制品,2021(3):101-104. WANG H J.Effect of Nano SiO2 on Performance of Cement Mortar with Sludge Incineration Ash[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):101-104.
    短切玄武巖纖維對磷酸鎂水泥砂漿性能的影響
    短切玄武巖纖維對磷酸鎂水泥砂漿性能的影響
    • 趙鵬輝1, 黨玉棟2,3,陳治君2,3,李昕成2,3,徐 清1,劉聰興1,錢覺時4
    2021年第3期
    摘要
    引用本文
    摘 ? 要:采用固定水膠比和固定流動度兩種方案進行對比試驗,研究了不同摻量的玄武巖纖維對復合磷酸鎂水泥(MPC)砂漿流動度和力學性能的影響,并采用掃描電子顯微鏡(SEM)觀察了微觀形貌。結果表明:在固定水膠比的情況下,隨著玄武巖纖維摻量的增加,MPC砂漿的流動度降低,但力學性能有所提高,且摻量為3.5 kg/m3時,力學性能最優,超過此摻量則增幅下降;在固定流動度而水膠比隨纖維摻量增加而增大的情況下,MPC砂漿的力學性能整體呈下降趨勢;SEM結果表明,在一定摻量范圍內,玄武巖纖維在MPC砂漿中分散均勻,摻量過多則會產生纖維團聚現象;MPC砂漿與玄武巖纖維之間有一定的黏接力和摩擦力,但二者的黏結性或相容性不足;MPC砂漿的水化過程不會對玄武巖纖維造成損傷。 Abstract: The comparative tests were carried out with two schemes of fixed water-binder ratio and fixed fluidity, and the effect of different content of basalt fiber on the fluidity and mechanical properties of composite magnesium phosphate cement (MPC) mortar was studied, and the scanning electron microscope (SEM) was used to observe its microscopic appearance. The results show that under the condition of fixed water-binder ratio, the fluidity of MPC mortar decreases but its mechanical properties improve with the increase of basalt fiber content, and the mechanical properties are optimal when the content is 3.5 kg/m3, but the increase decreases when the content exceeds 3.5 kg/m3. When the fluidity is fixed and the water-binder ratio increases with the increase of fiber content, the overall mechanical properties of MPC mortar tend to decline. The SEM results show that within a certain content range, basalt fiber is evenly dispersed in MPC mortar, while over-mixing will produce fiber cluster phenomenon. MPC mortar and basalt fiber have certain adhesion and friction force, but the adhesion or compatibility is insufficient. The hydration process of MPC mortar will not cause damage to basalt fiber.
    趙鵬輝,黨玉棟,陳治君,等.短切玄武巖纖維對磷酸鎂水泥砂漿性能的影響[J].混凝土與水泥制品,2021(3):43-47. ZHAO P H,DANG Y D,CHEN Z J,et al.Effect of Chopped Basalt Fiber on the Properties of Magnesium Phosphate Cement Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):43-47.
    耐堿玻纖改善高性能混凝土抗裂性能研究
    耐堿玻纖改善高性能混凝土抗裂性能研究
    • 王 威1,宿利平1,姜瑞雙2,3
    2021年第3期
    摘要
    引用本文
    王威,宿利平,姜瑞雙.耐堿玻纖改善高性能混凝土抗裂性能研究[J].混凝土與水泥制品,2021(3):48-51. WANG W,SU L P,JIANG R S.Study on Cracking Resistance of Glass Fiber Reinforced High Performance Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(3):48-51.
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