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    蘇州混凝土水泥制品研究院有限公司

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    第三期

    礦物摻合料水工混凝土抗氯離子侵蝕性能研究
    礦物摻合料水工混凝土抗氯離子侵蝕性能研究
    • 趙井輝,武義馨,劉福勝,崔兆彥,溫福勝,劉 波
    2015年第3期
    摘要
    引用本文
    摘 要:研究了花崗巖石粉、粉煤灰等礦物摻合料對水工混凝土抗氯離子侵蝕性能的影響,采用RCM法測定了氯離子在混凝土試件內部擴散系數的變化規律,并研究了礦物摻合料的摻量與水工混凝土抗氯離子侵蝕性能的關系。結果表明,礦物摻合料混凝土抗氯離子侵蝕性能較普通混凝土得以提高,通過混凝土雙摻與單摻礦物摻合料的抗氯離子侵蝕性能的比較,雙摻時抗氯離子侵蝕性能比單摻花崗巖石粉時更好。 Abstract: The effect of granitic powder, fly ash and other waste mineral admixtures on chloride resisting properties of hydraulic concrete are studied, and the change rule of internal diffusion coefficient of chloride ion in concrete specimens is tested by the method of RCM, furthermore, the relationship between the content of waste mineral admixtures and chloride resisting properties of hydraulic concrete performance is studied. The results show that chloride resisting properties of the concrete with admixtures is better than that of ordinary concrete, and the performance of concrete double mixed with admixtures is better than that of concrete single mixed with admixture.
    凍融循環下鋰渣粉對混凝土滲透性的影響
    凍融循環下鋰渣粉對混凝土滲透性的影響
    • 張廣泰,董海蛟,溫 勇
    2015年第3期
    摘要
    引用本文
    摘 要:采用電通量法測定了不同鋰渣摻量的混凝土在不同凍融循環次數下的電通量,并研究了電通量與各影響因素之間的函數關系。試驗結果表明,隨凍融循環次數的增加,混凝土電通量近似呈線性增加。當凍融循環次數為75次時,不同鋰渣摻量下的混凝土仍具有較高的抗氯離子滲透性。鋰渣粉的加入能明顯降低混凝土的氯離子滲透性,隨鋰渣摻量的增加,混凝土電通量近似呈負指數函數關系下降。同時發現,電通量與初始電流間、電通量與氯離子滲透深度間、初始電流與氯離子滲透深度間均具有較好的線性相關性。 Abstract: Electric flux of concrete with different lithium slag powder content subjected to different freeze-thaw cycle number was determined by the test method of coulomb electric flux, and the function relations between electric flux and different factors were studied. The test results show that electric flux of concrete increases with increasing freeze-thaw cycle number by the linear function. When the freeze-thaw cycle number is 75, the concrete with different lithium slag powder content still has a high resistance to chloride penetration. Addition of lithium slag powder into concrete can significantly reduce its chloride penetration and electric flux decreases with increasing lithium slag powder content by the negative exponential function. In addition, the relationships between electric flux and initial current, electric flux and chloride ion penetration depth, initial current and chloride ion penetration depth all have a good linear correlation.
    高性能混凝土超高泵送施工技術研究
    高性能混凝土超高泵送施工技術研究
    • 阮 超1,倪修全1,杜華東2
    2015年第3期
    摘要
    引用本文
    摘 要:以實際工程為例,分析了高性能混凝土超高泵送的影響因素并合理設計高性能混凝土配合比,依據以往經驗驗算了泵送壓力,選擇了合適的輸送泵設備,并對超高層建筑泵送高性能混凝土過程中可能出現的堵管原因作出了分析,制定了相應的對策。 Abstract: Taking a practical engineering an example, the influence factors of high-performance concrete pumping to super high-rise building were studied, and the reasonable mix proportion of high-performance concrete was determined. Based on the engineering experience, the pressure of pumping was calculated accurately. At the same time, the appropriate pumping equipment was chosen. In addition, the reasons of plugging in the process of pumping high performance concrete to super high-rise building was analyzed and corresponding measures for avoiding tubes blockage were put forward.
    大體積山砂混凝土的施工研究
    大體積山砂混凝土的施工研究
    • 吳慧瓊,姚傳勤
    2015年第3期
    摘要
    引用本文
    摘 要:根據工程實際,研究了山砂混凝土的配制要點、施工關鍵技術及混凝土的控溫及養護措施,總結了大體積山砂混凝土主要的施工技術和特性。 Abstract: According to the engineering practice, the preparation points of rock sand concrete, the key construction technology and the measures of concrete temperature control and curing are mainly researched, and the main construction technology and features of the massive rock sand concrete are summed up.
    濱海鹽漬土輸電線路用C60樁基混凝土示范工程簡介
    濱海鹽漬土輸電線路用C60樁基混凝土示范工程簡介
    • 唐 囡1,趙康文1,林德源2,陳云翔2,路新瀛3
    2015年第3期
    摘要
    引用本文
    摘 要:在福建某濱海輸電線路中開展了抗濱海鹽漬土侵蝕的C60樁基混凝土工程示范研究。通過工程示范,檢驗了C60混凝土的施工性和抗裂性;并在其中埋設了耐久性傳感器,用于長期環境作用下的混凝土劣化監測。通過示范工程發現,輸電線路基礎作業環境差,施工與管理水平相對落后。綜合考慮電力施工特點和結構耐久性要求,建議以60d或90d齡期時達到C60混凝土抗壓強度及規定的滲透性要求為宜;同時建議對地表上下樁基,特別是接樁處,必須進行防腐設計并規定施工要求。 Abstract: A mock-up test for C60 high performance pile concrete with high resistance to saline attack is completed in Fujian province and the properties of concrete are tested. The further durability of concrete is being monitored using embedded durability sensors at the field. The demonstration project shows that the environment of transmission line foundation work is poor, and the construction management level is relatively backward. So modifications are needed to formulate for the design of durable concrete structures near the ground as well as the corresponding construction management.
    機制砂濕拌抹灰砂漿研究與生產應用
    機制砂濕拌抹灰砂漿研究與生產應用
    • 陳 景,劉永道,王晶晶,黃海珂,甘戈金,盧佳林
    2015年第3期
    摘要
    引用本文
    摘??要:根據普通預拌砂漿的技術性能要求,研究了膠材總量及各組分摻量、機制砂性能、外加劑種類及摻量對機制砂濕拌抹灰砂漿性能的影響,確定了稠度、保水性、可操作時間、強度及施工性能等綜合性能優良的M5~M15抹灰砂漿的配合比;提出了機制砂濕拌砂漿中試生產應用過程中簡要的質量控制方法。中試生產應用表明,M5~M15濕拌抹灰砂漿的和易性及施工質量良好,墻面均無空鼓開裂現象。Abstract:Theinfluenceoftotalamountofcementitiousmaterial(aswellastheratiosofeachcomponent),performanceofartificial-sandandtypesandamountofadditivesonthewet-mixedplasteringmortararestudiedaccordingtotheperformancerequirementsofcommonready-mixedmortar.Basedonexperiments,theoptimummixproportionofM5~M15plasteringmortarwithexcellentoverallproperties(mortarconsistency,waterretention,operabletime,compressivestrengthandworkability)isdetermined.Somesimplemethodsareputforwardtocontroltheproductionandconstructionqualityofplasteringmortar.ThepilotproductionandappliedresultsshowthatM5~M15wet-mixedplasteringmortarhasexcellentworkabilityandconstructionqualityduringtheperiodofconstruction.Hollowandcrackscouldnotbefoundontheplasterwallthroughalong-termverification.
    石蠟/膨脹珍珠巖基相變儲能砂漿調溫性能的研究
    石蠟/膨脹珍珠巖基相變儲能砂漿調溫性能的研究
    • 柯倩倩,李玉香,朱曉燕,馬 雪,吳 江,張 俊
    2015年第3期
    摘要
    引用本文
    摘 要:研究了石蠟/膨脹珍珠巖基相變水泥砂漿板的力學性能及導熱系數,測定了不同制備方式的石蠟/膨脹珍珠巖基相變水泥砂漿板對房屋模型室溫的調控性能。結果表明:相對于普通水泥砂漿,石蠟/膨脹珍珠巖基相變水泥砂漿具有良好的調溫性能,可以有效降低室內的溫度波動和減小最大溫度值,達到建筑節能的目的。插層法的調溫性能優于混摻法,且相變材料摻量越大,調溫效果越明顯。 Abstract:The mechanical properties and thermal conductivity of paraffin/expanded perlite matrix phase change cement mortar board are researched, and the thermal control effect of housing model indoor temperature of the cement mortar boards prepared by different ways are measured. The results indicate that paraffin/expanded perlite composite PCM cement mortar boards have lower heating rate and cooling rate; the maximum temperature and the minimum temperature are much higher than those of ordinary cement mortar boards. Composite PCM cement mortar boards have good thermal control effect, which makes the advanced maximum temperature time postponed and has a good effect of the thermostat. And the larger amount of PCM of the incorporation, the more obvious effect. Energy-saving effect of the composite PCM cement mortar boards prepared by lamination interpolation method is better than that of the boards by direct mixing. Results can provide the basis for the application of the composite PCM cement mortar boards in the building energy efficiency.
    ?;⒅閺秃匣炷恋刃嵯禂笛芯? />
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                          <a href="/product/1168.html" target="_parent" class="title"><i class="iconfont12"></i>?;⒅閺秃匣炷恋刃嵯禂笛芯?/a>
                        
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                                      <span class="attrValue"><i class="iconfont2"></i> 張   冰,程忠慶,唐軍務</span>
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                                      <span class="attrValue"> 2015年第3期</span>
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                            <span class="newMs">摘   要:分析了?;⒅閺秃匣炷恋膫鳠釞C理,對該混凝土中熱流的傳遞途徑進行了劃分,構建了基于最小熱阻理論的導熱系數計算模型,并用相關文獻試驗數據對模型進行了驗證。結果表明,該模型能夠較精確的預測?;⒅閺秃匣炷粮稍餇顟B下的導熱系數。后續研究還可考慮含濕率,以及?;⒅榈募毝饶祵Σ;⒅閺秃匣炷恋膶嵝阅艿挠绊?。
Abstract:Based on the mechanism of thermal conductivity of expended and vitrified beads concrete, the channels of thermal conductivity in concrete are divided, the thermal conductivity coefficient is modeled based on the theory of minimum thermal resistance, and the model by using the data of other related literatures is confirmed. The results indicate that the model can calculate the thermal conductivity coefficient under arid state exactly. The subsequent research should be launched in the field of influencing factors of thermal conductivity in concrete including moisture content and fineness module of expanded and vitrified beads.</span>
                         
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    天然纖維增強水泥基材料軸拉性能試驗研究
    • 史建麗1,2,田 礫1,2,趙鐵軍1,2,尚 君1,2
    2015年第3期
    摘要
    引用本文
    摘 要:工程水泥基復合材料(簡稱ECC)能改善普通混凝土脆性、耐久性差的問題,但聚乙烯醇(PVA)纖維的較高價格,一定程度上局限了ECC的推廣應用。本文主要從天然纖維入手,研究體積摻量為2%竹原、苧麻、劍麻、大麻這四種纖維組成的水泥基材料的軸拉性能,將四種纖維分別以干鋪和濕鋪兩種方式,采用啞鈴型試件做單軸拉伸試驗。試驗結果表明,四種纖維在所選取的配比范圍內,在拉伸荷載作用下應力-應變關系可分為彈性上升階段、應變硬化階段和應變軟化階段,且均能實現應變硬化與多縫開裂,極限拉應變最大可達3.5%。 Abstract: ECC(Engineering Cementitious Composites) can improve brittleness and poor durability of ordinary concrete, but the higher price of PVA fiber limits the generalization and application of ECC to some degree. Here, based on the natural fibers, axial tensile properties of ECC with 2% volume content of bamboo, ramie, sisal or hemp are studied, the four kinds of fiber are treated using two ways of wet-laid and dry-laid, and the dumbbell specimens are made to carry out the uniaxial tension test. The results show that when the four kinds of fiber is within range of the selected ratio, under the tensile loads stress-strain relationship has elastic rise stage, strain hardening stage and strain softening stage, and strain hardening and multiple joints cracking are achieved, the ultimate tensile strain is up to 3.5%.
    雙摻玄武巖纖維和陶砂對混凝土收縮開裂性能的影響
    雙摻玄武巖纖維和陶砂對混凝土收縮開裂性能的影響
    • 曹 敏
    2015年第3期
    摘要
    引用本文
    摘 要:通過干燥收縮、塑形收縮和圓環開裂試驗,研究了雙摻玄武巖纖維和陶砂混凝土的抗收縮開裂性。試驗結果表明,單摻玄武巖纖維可增大混凝土收縮開裂趨勢;長度6mm、18mm和30mm的纖維,其干縮應變相比基準混凝土分別增大了5%、17%和22%;雙摻玄武巖纖維和陶砂可降低混凝土收縮開裂趨勢;陶砂摻量為10%時,可明顯降低混凝土收縮開裂性,陶砂摻量繼續增加(20%和30%),混凝土收縮開裂趨勢增加。 Abstract: Influence of basalt fiber and ceramic sand on shrinkage and crack of concrete was studied by drying shrinkage, plastic shrinkage and ring cracking test. The results show that basalt fiber can increase the tendency of shrinkage cracking of concrete. The drying shrinkages of concrete with the fiber length of 6mm, 18mm and 30mm respectively increase 5%, 17% and 22% of that of the reference concrete. The tendency of shrinkage cracking of concrete double mixed of basalt fiber and ceramic sand can decrease. When the ceramic sand content is 10%, the shrinkage cracking of concrete significantly reduces, however, the content continues to increase (20% and 30%), shrinkage cracking tendency of concrete will be increased.
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