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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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    第九期

    堿礦渣水泥固結鉻渣廢棄物效果初探
    堿礦渣水泥固結鉻渣廢棄物效果初探
    • 朱效宏,鄭雨佳,周 歡,楊長輝
    2013年第9期
    摘要
    引用本文
    摘??要:通過等量取代堿礦渣水泥中礦渣組分與普通硅酸鹽水泥中的水泥對比試驗研究,探討了采用堿礦渣水泥固結鉻渣廢棄物的技術優勢。試驗表明,當取代量為30%時,堿礦渣水泥28d固結鉻渣后的Cr6+表面浸出率為0,普通硅酸鹽水泥28d固結鉻渣后的Cr6+表面浸出率為3.00×10-5g/cm2·d,說明堿礦渣水泥水化28d后對鉻渣的固結效率遠大于普通硅酸鹽水泥固結效率,且用堿礦渣水泥固結鉻渣廢棄物的臨界取代摻量可達50%。Abstract:BycomparingthetestresultsfromequivalentreplacementoftheslaginAASCorthecementofordinaryPortlandcement(OPC)withchromiumslag,theadvantagesofAASCsolidifiedbodywiththechromicresiduearediscussed.Theresultsindicatethatwhenthereplacementrateofchromiumslagis30%,thesurfaceleachingrateofCr6+inthekindofAASCsolidifiedbodyofis0,whereasthesurfaceleachingrateofCr6+intheOPCsolidifiedbodywiththechromiumslagis3.00×10-5g/cm2·dafter28dhydration,whichshowsthatthesolidificationefficiencyoftheAASCsolidifiedbodyonchromiumslagafter28dhydrationisfarbetterthanthatoftheOPCsolidifiedbody,andthecriticalreplacementrateofchromiumslagcanreachupto50%.
    堿渣混凝土耐磨性能試驗研究
    堿渣混凝土耐磨性能試驗研究
    • 張 淵1 ,劉 勛1,曹 軍2,陳寶海1,董 云1,張 穎1,宗 榮1
    2013年第9期
    摘要
    引用本文
    摘 要:對堿渣摻合料混凝土在不同條件下的耐磨性能進行了試驗研究,結果表明,隨著堿渣摻量的增加,堿渣混凝土的耐磨性呈現先增強后減弱的規律,當堿渣占膠凝材料10%時,混凝土耐磨性能最優。結合SEM圖像分析,堿渣占膠凝材料10%時,混凝土的微觀結構變得更為密實;繼續增加堿渣的摻量,堿渣的耐磨性呈現大幅減弱。試驗還對不同養護齡期的堿渣摻合料混凝土進行了研究,發現混凝土的耐磨性隨養護齡期增長呈現增強趨勢。 Abstract: The abrasion resistance of the alkaline residue concrete under different conditions are tested and studied. The results show that the abrasion resistance of the alkaline residue concrete increase firstly and then decrease with the increasing of alkaline content. The abrasion resistance of the concrete is the best when the content of alkaline residue is 10% of cementation content. Combined with SEM, it’s found that the microstructure of the concrete is more dense when the cement replacement ratio of alkaline residue is 10%, and then, the abrasion resistance of the concrete sharply decrease with the increasing the content of alkaline residue. In addition, the abrasion resistance of the alkaline residue concrete under the different curing periods is tested, and the test results indicate that the abrasion resistance of the concrete increases with the increasing of curing ages.
    全尾砂新型膠凝材料的配合比優化
    全尾砂新型膠凝材料的配合比優化
    • 魏 微,高 謙
    2013年第9期
    摘要
    引用本文
    摘 要:選取水淬高爐礦渣為主要原料,石灰加脫硫石膏為復合激發劑,添加少量氯化鈣制成全尾砂新型膠凝材料,以其完全取代礦山膠結充填中使用的膠結劑水泥。采用設計4因素3水平的正交試驗,考察了石灰、脫硫石膏及氯化鈣添加量對全尾砂新型膠凝材料充填體強度的影響,獲得了制備全尾砂新型膠凝材料充填體28d強度的最佳配合比。結果表明,全尾砂新型膠凝材料充填體在最佳配合比條件下28d的單軸抗壓強度為2.944MPa,是相同條件(濃度、膠砂比、齡期)下42.5R水泥膠凝材料充填體強度的7.5倍,可以取代水泥作為全尾砂膠結劑。 Abstract: For replacing traditional cement, a new type of whole-tailing cementitious materials is designed and prepared by using water quenching blast furnace slag as main material as well as lime desulphurization gypsum as composite activator and adding calcium chloride. Using the orthogonal design method of 4 factors×3 levels, the optimal mix proportion for preparing the whole-tailing backfill body were obtained by studying the effects of following factors, such as lime, desulphurization gypsum and calcium chloride. The results show that the 28d strength of the whole-tailing backfilling body is 2.944MPa using the optimum mix proportion, which is 7.5 times than that of 42.5R cementitious backfilling body under the same condition of concentration, cement-sand ratio and ages. Therefore, the whole-tailing cementitious material can replace cement as the cementation material.
    混凝土管片塑料吊裝孔在盾構施工時的常見問題及處理措施
    混凝土管片塑料吊裝孔在盾構施工時的常見問題及處理措施
    • 張 翯1,陳長剛2
    2013年第9期
    摘要
    引用本文
    摘 要:地鐵盾構鋼筋混凝土管片塑料吊裝孔預埋件在城市地鐵管片中得到越來越廣泛的應用,根據產品特點并結合施工實際應用情況,對盾構掘進施工過程中鋼筋混凝土管片塑料吊裝孔預埋所出現的問題進行探析,提出一些預防和解決措施。 Abstract: Plastic hoisting holes embedded parts of the subway shield reinforced concrete segment are used more and more widely in the city subway segments. According to the characteristics of products and combined with the actual construction application, the problems arisen during the embedded process of the plastic hoisting holes are analyzed, and some preventive measures and solutions are put forward.
    某舊拱橋病害分析及加固設計與施工
    某舊拱橋病害分析及加固設計與施工
    • 楊國立,李瑞鴿
    2013年第9期
    摘要
    引用本文
    摘 要: 通過對某舊拱橋作細致的技術狀況調查,查明缺陷(或潛在缺陷)、損傷位置及其嚴重程度和發展趨勢,評價橋梁的使用功能。分析了主拱圈、橫系梁、腹拱、伸縮縫、橋臺等的病害情況。結合病害情況及檢測結果,闡述該橋的維修加固設計方案,對加固施工中的錨噴混凝土施工、植筋專項施工、環氧砂漿修補裂縫施工、伸縮縫處理施工方法等進行了詳細介紹。 Abstract: The technical condition of an old arch bridge is meticulously investigated to find out the defect (or potential defect), damage location and development tendency of the bridge and evaluate the use function of the kind of the bridge. The main arch rings, cross beams, spandrel arches, expansion joints, abutments and other diseases are analyzed. Combination with disease situation and test results, the repair and reinforcement schemes of the bridge are explained. And some construction methods about anchor spray cement concrete, planting reinforcing bar, repair crack with epoxy mortar, expansion joints handle, etc. are introduced in detail.
    復合土釘墻深基坑支護技術經濟研究
    復合土釘墻深基坑支護技術經濟研究
    • 溫艷芳1,寧連旺2
    2013年第9期
    摘要
    引用本文
    摘 要:闡述了復合土釘墻基本形式和構造特點,研究了復合土釘墻設計計算及施工技術要點,通過工程實例提出了復合土釘墻造價低、工期短、安全度高等優點,深基坑支護-截水應用經濟效益顯著。 Abstract: The basic form and the structure characteristics of composite soil nailing wall are elaborated, and the design calculation and key points of construction technology of composite soil nailing wall are researched. Through the engineering example, the advantages such as low cost, short construction period and high safety degree of composite soil nailing wall are put forward, and the deep foundation pit-cutting water application has the obvious economic benefit.
    復摻錳渣微粉與粉煤灰干混砂漿的試驗研究
    復摻錳渣微粉與粉煤灰干混砂漿的試驗研究
    • 陳 平1,2,鄒小平1,劉榮進1,2,馬清清1,韋家嶄1
    2013年第9期
    摘要
    引用本文
    摘 要:研究了錳渣微粉和粉煤灰兩種工業廢渣作為礦物摻合料在干混砂漿中的應用。探討了單摻錳渣微粉及錳渣微粉與粉煤灰不同比例復摻對砂漿工作性能及強度的影響,并對試樣的微觀結構進行了分析。試驗結果表明,錳渣微粉摻量在20%左右,錳渣與粉煤灰最適宜復摻比例為6:4。 Abstract: The two industrial waste residues of manganese slag powder and fly ash as mineral admixtures applied to the dry-mix mortar is studied. The influences of the single doped manganese slag powder, manganese slag powder and fly ash in different proportion of double mixing mortar on working performance and strength of mortar are discussed, and the micro structure of the specimens is analyzed. The test results show that when the manganese slag powder dosage is about 20%, the most suitable compound mixing proportion of manganese slag and fly ash is 6:4.
    磷建筑石膏制備墻體灌漿料的試驗研究
    磷建筑石膏制備墻體灌漿料的試驗研究
    • 陳德玉,劉元正,陳雪梅,劉路珍,董國勝
    2013年第9期
    摘要
    引用本文
    摘 要:通過正交試驗研究了不同原料配比對磷建筑石膏墻體灌漿料性能的影響,得到的最佳配比為:粉煤灰10%,生石灰3%,檸檬酸鈉0.1%,減水劑0.6%以及水膏比為0.46。其2h抗折強度2.52MPa,2h抗壓強度7.75MPa,初凝時間14min,終凝時間21min,流動度208mm,滿足現場石膏澆注的施工工藝要求以及非承重墻體強度的技術指標。最后對其放射性進行了進一步分析。 Abstract: Through the orthogonal experiment, the effects of different materials proportions on grouting material performance of walls prepared by phosphorus building gypsum are studied, and the best proportion is obtained with fly ash 10%, lime 3%, sodium citrate 0.1%, water reducer 0.6% and the ratio of water to phosphorus building gypsum 0.46. The performance parameters of the best proportion are as follows: 2h flexural strength 2.52MPa, 2h compressive strength 7.75MPa, initial setting time 14 min, final setting time 21 min, and fluidity 208mm, which can conform to the technical requirements of construction process of gypsum pouring on site as well as the strength of the non-bearing walls. Finally, the radioactivity of grouting material is analyzed further.
    地震持時對基于IDA方法結構優化結果的影響
    地震持時對基于IDA方法結構優化結果的影響
    • 唐 月
    2013年第9期
    摘要
    引用本文
    摘 要:地震持時作為地震動記錄中一個重要的要素,本文以一棟5層鋼筋混凝土框架結構房屋為例,采用三種常用的地震動持時方式輸入結構模型,分析比較地震持時對基于IDA方法結構優化結果的影響及特點,并提出相關建議。 Abstract: Earthquake duration is an important element of ground motion records. Taking a 5-layer reinforced concrete frame building as an example and using 3 kinds of structure models with seismic duration input mode, the effect of earthquake duration on structure optimization results based on the IDA method are analyzed and compared, and some related suggestions are put forward.
    變截面連續箱梁的畸變應力ANSYS仿真分析
    變截面連續箱梁的畸變應力ANSYS仿真分析
    • 曹立波,劉姍姍
    2013年第9期
    摘要
    引用本文
    摘 要:箱梁由于抗彎能力強,抗扭剛度大,廣泛用于修建城市橋梁、曲線橋和大跨度橋,但它在偏心荷載作用下的扭轉畸變行為分析較為復雜。隨著箱梁在土木工程領域的應用日益廣泛,箱梁的扭轉畸變效應越來越受到設計人員的重視。本文以哈爾濱松花江大橋為例,對大跨變截面連續箱梁的扭轉、畸變,采用ANSYS進行了有限元分析。 Abstract: Because of having great flexural capacity and torsion rigidity, box girders are widely used in the construction of urban highway, horizontally curved and long-span bridges. But it is complicated to study the torsion and distortion of box girders under the action of eccentric loads. With the extensively using of box girders in the civil engineering field, more and more design engineers pay high attention on the torsion and distortion effects of box girders. Taking the example of the main bridge of Songhuajiang River Bridge at Harbin, the torsion and distortion of long-span continuous bridge with variable cross sections is studied by using the ANSYS finite element analysis software.
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