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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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    第十二期

    古建筑修復用聚合物砂漿的配合比優化及微結構表征
    古建筑修復用聚合物砂漿的配合比優化及微結構表征
    • 楊 劍1,溫曉凱2,張增起1,王 軍2,王麗麗2,閻培渝1
    2019年第12期 NO.284 P1-6
    摘要
    引用本文
    摘?要:通過正交試驗分析了膠砂比、膠材組成、速凝劑摻量、聚合物摻量對某種古建筑修復用的聚合物砂漿的抗壓強度、壓折強度比、收縮率和拉伸黏結強度等宏觀性能的影響,并通過掃描電鏡觀察和壓汞試驗分析了該種聚合物砂漿的微觀形貌和孔隙特征,得出了修復砂漿的優化配合比,驗證了其總體性能的優越性。Abstract:Theeffectsofbinder-sandratio,thecompositionofthecementitiousbinder,thecontentofacceleratorandpolymerpowderonthecompressivestrength,theratioofcompressionstrengthandflexurestrength,shrinkageandtensilebondstrengthofthepolymermortarforancientbuildingmaintenancewerestudiedthroughorthogonalexperiment.Themorphologyandtheporosityofthehardenedmortarwereinvestigatedbyscanningelectronmicroscope(SEM)andmercuryintrusionporosimetry(MIP).Theoptimizedmixproportionofthepolymermortarwasobtainedanditssatisfactoryperformancewasproved.
    楊劍,溫曉凱,張增起,等.古建筑修復用聚合物砂漿的配合比優化及微結構表征[J].混凝土與水泥制品,2019(12):1-6. YANG J,WEN X K,ZHANG Z Q,et al.The Optimization of Mix Proportion and Microstructural Characteristics of Polymer Mortar Used for Ancient Building Maintenance[J].China Concrete and Cement Products,2019(12):1-6.
    城市生活垃圾焚燒飛灰對水泥水化過程的影響研究
    城市生活垃圾焚燒飛灰對水泥水化過程的影響研究
    • 鄧 芳1,桂 雨2,廖宜順2,劉 陽2
    2019年第12期
    摘要
    引用本文
    摘 要: 研究了經過化學螯合穩定化處理后的城市生活垃圾焚燒飛灰(CFA)對水泥漿體凝結時間、抗壓強度、電阻率和水化產物的影響規律。結果表明,摻入CFA后,水泥漿體的凝結時間縮短,在3 d和28 d齡期時生成了水化產物Friedel鹽,且水泥漿體的液相離子濃度增大,電阻率減??;當CFA摻量為5%時,硬化水泥漿體7 d齡期內的抗壓強度提高,但28 d抗壓強度降低;當CFA摻量從10%增大到60%時,硬化水泥漿體的抗壓強度均小于空白組,并逐漸降低。 Abstract: The effects of municipal solid waste incineration fly ash after chemical chelating agent stabilization treatment(CFA) on the setting time, compressive strength, electrical resistivity and hydration products of cement pastes were studied. The results show that the setting time of cement paste is shortened after CFA is mixed, and Friedel’s salt is formed at the age of 3 days and 28 days. In addition, the electrical resistivity of the cement paste is decreased due to the increase of ion concentration of the liquid phase. When the amount of CFA is 5%, it helps to improve the compressive strength of the hardened cement paste during the 7 days, but the compressive strength at 28 days decreases. When the amount of CFA is increased from 10% to 60%, the compressive strength of the hardened cement paste is smaller than that of the control group and decreases gradually.
    鄧芳,桂雨,廖宜順,等.城市生活垃圾焚燒飛灰對水泥水化過程的影響研究[J].混凝土與水泥制品,2019(12):94-97. DENG F,GUI Y,LIAO Y S,et al.Study on the Influence of Municipal Solid Waste Incineration Fly Ash on Cement Hydration Process[J].China Concrete and Cement Products,2019(12):94-97.
    玻璃粉摻量對石灰石粉混凝土干燥收縮的影響
    玻璃粉摻量對石灰石粉混凝土干燥收縮的影響
    • 何智海1,2,常靜宇2
    2019年第12期
    摘要
    引用本文
    摘 要:測試了不同齡期石灰石粉混凝土的干燥收縮和失水量,研究了玻璃粉摻量對其干燥收縮性能的影響。結果表明,摻加10%和20%玻璃粉可有效降低石灰石粉混凝土的干燥收縮,以10%摻量最佳,繼續增加玻璃粉摻量反而增加了干燥收縮。掃描電鏡(SEM)結果表明,良好的保水性和致密的內部結構,能夠增強混凝土抵抗干燥收縮的能力,阻礙其內部水分遷移滲出,從而降低干燥收縮。 Abstract: The drying shrinkage and water loss of concrete with limestone powder at different ages were tested to study the effect of glass powder with different contents on its drying shrinkage performance. The results show that the utilization of 10% and 20% glass powder reduces drying shrinkage of concrete with limestone powder, and the best content is 10%, however, with the further increase of glass powder content, the drying shrinkage of concrete is increased. Scanning electron microscopy(SEM) results show that the good water retention and dense internal structure of concrete can enhance the ability of concrete to resist drying shrinkage and hinder the migration and exudation of internal moisture, thus reducing drying shrinkage.
    何智海,常靜宇.玻璃粉摻量對石灰石粉混凝土干燥收縮的影響[J].混凝土與水泥制品,2019(12):91-93. HE Z H,CHANG J Y.Effect of Glass Powder Content on Drying Shrinkage of Concrete with Limestone Powder[J].China Concrete and Cement Products,2019(12):91-93.
    粉煤灰和爐渣對堿激發鎳渣膠凝材料流動度和強度的影響
    粉煤灰和爐渣對堿激發鎳渣膠凝材料流動度和強度的影響
    • 季 韜,張檢梅,王燦強
    2019年第12期
    摘要
    引用本文
    摘 要:在NaOH及水玻璃(WG)兩種堿激發劑下,研究了粉煤灰及爐渣對堿激發鎳渣-粉煤灰-爐渣膠凝材料(ANC-FI)流動度及強度的影響,并通過XRD和IR揭示其機理。結果表明,當粉煤灰及爐渣總摻量為30%(等質量取代鎳渣)時,隨著爐渣摻量的增加(即粉煤灰摻量降低),ANC-FI的標準稠度用水量增加,凝結時間延長,砂漿流動度降低;ANC-FI抗折強度和抗壓強度均隨著爐渣摻量的增加呈先增大后減小的趨勢,最佳摻量為粉煤灰和爐渣各取代15%的鎳渣。 Abstract: The effects of fly ash and incineration slag on the fluidity and strength of alkali-activated nickel slag-fly ash-incineration slag cementitious material ( ANC-FI) with NaOH or water glass (WG) as activators were studied, and the mechanism was revealed by XRD and IR. The results show that when the nickel slag is replaced by 30% of fly ash and incineration slag, with the increase of the incineration slag content (i.e., the amount of fly ash is reduced), the standard consistency water consumption of ANC-FI is increased, the setting time is prolonged and the fluidity of ANC-FI is reduced. The flexural strength and compressive strength of ANC-FI increase first and then decrease with the increase of incineration slag content, and when the nickel slag is replaced by 15% fly ash and 15% incineration slag respectively, the optimum ANC-FI can be obtained.
    季韜,張檢梅,王燦強.粉煤灰和爐渣對堿激發鎳渣膠凝材料流動度和強度的影響[J].混凝土與水泥制品,2019(12):87-90+97. JI T,ZHANG J M,WANG C Q.Effect of Fly Ash and Incineration Slag on the Fluidity and Strength of Alkali-activated Nickel Slag Cementitious Material[J].China Concrete and Cement Products,2019(12):87-90+97.
    新型仿花崗巖混凝土路緣石成型裝置設計與試驗研究
    新型仿花崗巖混凝土路緣石成型裝置設計與試驗研究
    • 徐自明,王 乾
    2019年第12期
    摘要
    引用本文
    摘 要:研制了一種新型仿花崗巖混凝土路緣石成型裝置,重點解決了原成型生產工藝中存在的成型時間長、生產效率低、外觀質量差等問題。經生產驗證得出:新裝置產品2 min內可形成一定初始結構強度,養護7 d抗壓強度可達到設計強度的90%以上,生產效率與原干法生產工藝相當,較原濕法生產工藝,生產效率有一定提高,生產周期縮短,占用場地減少,生產成本降低;新裝置產品抗壓強度可達55 MPa,表觀密度可達2 400 kg/m3,較原工藝產品,物理力學性能有較大提高;新裝置產品外觀平整光滑。 Abstract: A new forming device for imitating granite concrete curb was developed, which focused on solving the problems of long forming time, production efficiency and poor appearance quality in the original forming process. The production verification shows that the initial structural strength of the new device product is 2 min, the compressive strength of the product can reach more than 90% of the design strength in 7d curing period, and the production efficiency is similar to that of the original dry process. Compared with the original wet process, the production efficiency is greatly improved, the production cycle is shortened, the occupied site is reduced, and the production cost is reduced. The compressive strength of the new device product reaches 55 MPa, the compactness reaches 2 300 kg/m3, which is better than the original process. The physical properties of the process products have been greatly improved, and the appearance quality of the new device products is smooth, which avoids the shortcomings of rough and hollow appearance of the original dry forming process products.
    徐自明,王乾.新型仿花崗巖混凝土路緣石成型裝置設計與試驗研究[J].混凝土與水泥制品,2019(12):83-86. XU Z M,WANG Q.Design and Experimental Study of New Imitation Granite Concrete Curb Stone Forming Device[J].China Concrete and Cement Products,2019(12):83-86.
    膨潤土保水增稠材料對預拌砂漿性能影響
    膨潤土保水增稠材料對預拌砂漿性能影響
    • 楊澤青1,2,李 軍1,2,盧忠遠1,鄧 鑫1,2
    2019年第12期
    摘要
    引用本文
    摘 要:選取國內特色膨潤土礦物作為預拌砂漿保水增稠材料,研究了膨潤土種類(鈣基膨潤土、鈉基膨潤土、鋰基膨潤土)及其摻量對預拌砂漿性能的影響。結果表明,不同類型的三種膨潤土在預拌砂漿中均具有增稠保水功能;膨潤土的摻入能夠使預拌砂漿濕密度降低,但摻量過多將影響砂漿力學性能;相比于鈣基和鈉基膨潤土,鋰基膨潤土在較低摻量下即具有較好的保水增稠效果;減水劑的摻入可在保證摻膨潤土預拌砂漿稠度的前提下,有效降低用水量、提高力學性能;在優選配合比下,鈣基、鈉基膨潤土與纖維素醚復摻在改善預拌砂漿保水率、28 d力學性能方面均優于單摻纖維素醚或膨潤土。 Abstract: Local characteristics bentonite mineral was used as the water-retentive and plastic material to prepare ready-mixed mortar and the effect of the type (Ca-bentonite, Na-bentonite, Li-bentonite) and the content of bentonite on performance of ready-mixed mortar was studied. The results show that three different types of bentonite have thickening and water retention functions in ready-mixed mortar. The addition of bentonite can reduce the wet density of ready-mixed mortar but decrease the mechanical properties when excessive addition of bentonite. Compared with Ca-bentonite and Na-bentonite, Li-bentonite with lower dosage has better water retention and thickening effect. The addition of water reducing agent in bentonite ready-mixed mortar can effectively reduce the water consumption and improve the mechanical properties under proper consistency. Composites of cellulose ether and Ca-bentonite/Na-bentonite can improve the water retention rate and 28 d strength of the ready-mixed mortar, which are superior to the cellulose ether or bentonite used alone.
    楊澤青,李軍,盧忠遠,等.膨潤土保水增稠材料對預拌砂漿性能影響[J].混凝土與水泥制品,2019(12):78-82. YANG Z Q,LI J,LU Z Y,et al.Effect of Bentonite Based Water-retentive and Plastic Materials on the Performance of Ready-mixed Mortars[J].China Concrete and Cement Products,2019(12):78-82.
    基于有限元的鋼筋混凝土框架柱CFRP加固分析
    基于有限元的鋼筋混凝土框架柱CFRP加固分析
    • 李茜莎
    2019年第12期
    摘要
    引用本文
    摘 要:為研究鋼筋混凝土框架柱在不同CFRP包裹方案下的加固效果,以某鋼筋混凝土廠房加固改造工程為例,通過有限元分析軟件ANSYS從擬靜力、骨架曲線、耗能角度對B×8框架柱兩種加固方案進行了計算分析。結果表明,兩端集中包裹方案對柱最大承載力和極限荷載的提高、剛度退化的限制、耗能能力的增強效果均優于均勻包裹方案,推薦采用柱兩端集中包裹CFRP法加固鋼筋混凝土框架柱的加固方案。 Abstract: A reinforced concrete building reinforcement project was taken as an example, and the finite element analysis software ANSYS was used to calculate and analyze the two reinforcement schemes of CFRP uniform package and concentrated package at both ends of the B×8 frame column from the pseudo static, skeleton curve and energy dissipation angle. The results show that the maximum package scheme at both ends is the largest to the column. The improvement of the bearing capacity and ultimate load, the limit of stiffness degradation and the enhancement effect of energy dissipation are all better than those of the uniform package. It is recommended to use the CFRP method to reinforce the reinforced concrete frame columns at both ends of the column.
    李茜莎.基于有限元的鋼筋混凝土框架柱CFRP加固分析[J].混凝土與水泥制品,2019(12):74-77. LI X S.Study on Reinforcement Effect of Reinforced Concrete Frame Columns Bonded with CFRP Based on Finite Element Method[J].China Concrete and Cement Products,2019(12):74-77.
    氣凝膠保溫砂漿導熱影響因素及建筑能耗研究
    氣凝膠保溫砂漿導熱影響因素及建筑能耗研究
    • 王修貴1,程 功1,張文靜2
    2019年第12期
    摘要
    引用本文
    摘 要:基于國內外研究現狀,根據最佳配合比制備氣凝膠保溫砂漿,研究相關因素對其導熱系數的影響。以鄭州市某座高層住宅樓為例,對比分析了氣凝膠砂漿保溫體系與?;⒅樯皾{保溫體系的建筑能耗。研究發現,氣凝膠保溫砂漿導熱系數隨著溫度的提高而增大,并且與其干表觀密度呈現線性增加的趨勢;與?;⒅樯皾{保溫體系建筑物相比,氣凝膠砂漿保溫體系建筑物的單位面積耗煤量與單位面積采暖費均降低18%。 Abstract: The aerogel thermal insulation mortar was prepared according to the best mix ratio, and the influence of related factors on its thermal conductivity was studied. Taking a high-rise residential building in Zhengzhou as an example, the aerogel insulation mortar insulation system and glass beads insulation mortar were analyzed. The resuts show that the thermal conductivity of the aerogel insulation mortar increases with the increase of temperature, and its dry apparent density shows a linear increase. Compared with the insulation system of glass beads, the aerogel insulation mortar insulation system has a 18% reduction in coal consumption per unit area and heating cost per unit area, which provides a reference for the study of aerogel thermal insulation mortar.
    王修貴,程功,張文靜.氣凝膠保溫砂漿導熱影響因素及建筑能耗研究[J].混凝土與水泥制品,2019(12):70-73. WANG X G,CHENG G,ZHANG W J.Thermal Conductivity Influence Factors and Building Energy Consumption Analysis of Aerogel Thermal Insulation Mortar[J].China Concrete and Cement Products,2019(12):70-73.
    考慮黏結滑移的鋼筋混凝土梁分析方法研究
    考慮黏結滑移的鋼筋混凝土梁分析方法研究
    • 于 江,皮滟杰,樂風江,許 磊,藺鵬杰
    2019年第12期
    摘要
    引用本文
    摘 要:基于ABAQUS有限元分析軟件,提出了一種以非線性彈簧與PQ-Fiber子程序結合使用來考慮鋼筋與混凝土之間黏結滑移關系的簡易方法,分別用此方法分析了普通鋼筋混凝土梁在單調荷載下的破壞過程,以及預應力混凝土梁在反復荷載下的受力行為。結果表明,在單調荷載和反復荷載下,數值分析結果的初始剛度和承載力均高于試驗結果;單調荷載下的分析結果出現了明顯的承載力下降階段,反復荷載下的分析中有效地避免了滯回曲線的過度飽滿現象;整體上分析結果與試驗結果吻合良好,故該方法用于鋼筋混凝土梁的有限元分析中是可行的。 Abstract: A simple and easy method to consider the relationship between bond and slip between steel and concrete based on ABAQUS finite element analysis software, in combination with a kind of non-linear spring and PQ-Fiber subroutine was put forward, and the failure process of ordinary reinforced concrete beams under monotonic loading and the behavior of prestressed concrete beams under cyclic loading were analyzed by this method. The results show that under the monotonic and cyclic loads, the initial stiffness and bearing capacity of the numerical analysis results are higher than those of the experimental results. The numerical analysis results have a significant bearing capacity decline stage, and the method effectively avoids the overfilling phenomenon of the hysteresis curve under cyclic load analysis. The results are in good agreement with the experimental results, and the method is feasible for the finite element analysis of reinforced concrete beams.
    于江,皮滟杰,樂風江,等.考慮黏結滑移的鋼筋混凝土梁分析方法研究[J].混凝土與水泥制品,2019(12):66-69. YU J,PI Y J,YUE F J,et al.Study on Analytical Method of Reinforced Concrete Beams Considering bonding Slip[J].China Concrete and Cement Products,2019(12):66-69.
    ECC拉伸性能與彎曲性能的試驗研究
    ECC拉伸性能與彎曲性能的試驗研究
    • 孔 燕1,邵永健1,杜 亮1,傅少華1,李國建2
    2019年第12期
    摘要
    引用本文
    摘 要:設計了10組ECC試件,并進行了啞鈴型單軸拉伸和薄板四點彎曲試驗,研究了粉煤灰摻量、水膠比和PVA纖維體積率對ECC拉伸性能與彎曲性能的影響。結果表明,增加粉煤灰摻量,ECC試件抗拉強度和抗彎強度均先增大后減小,當粉煤灰摻量為1.2時,ECC的受拉應變-硬化特性最明顯,極限拉應變可穩定達到4.7%以上;增大水膠比,ECC的抗拉強度和抗彎強度降低,但極限拉應變增大且受拉應變-硬化特性明顯;增大PVA體積率可明顯提高ECC的抗拉強度、極限拉應變和抗彎強度。 Abstract: The uniaxial tension and four-point bending tests of 10 groups of ECC specimens were carried out to study the effects of fly ash content, water-binder ratio and PVA fiber volume ratio on tensile properties and bending properties of ECC. The results show that the tensile strength and bending strength of ECC specimens increase first and then decrease with the increase of fly ash content, and when fly ash content is 1.2, the tensile strain-hardening characteristics of ECC are obvious, and the most obvious ultimate tensile strain could be more than 4.7%. With the increase of water-binder ratio, the tensile strength and bending strength of ECC decrease, but the ultimate tensile strain increases and the tensile strain-hardening characteristics are obvious. The tensile strength, ultimate tensile strain and bending strength of ECC could be improved obviously with the increase of PVA volume ratio.
    孔燕,邵永健,杜亮,等.ECC拉伸性能與彎曲性能的試驗研究[J].混凝土與水泥制品,2019(12):61-65. KONG Y,SHAO Y J,DU L,et al.Experimental Study on the Tensile and Bending Properties of ECC[J].China Concrete and Cement Products,2019(12):61-65.
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