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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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    第七期

    EVA對煤矸石泡沫混凝土性能的影響研究
    EVA對煤矸石泡沫混凝土性能的影響研究
    • 揣 丹,劉開平,溫久然,劉 寧,鮑俊敏,沈 凱
    2013年第7期
    摘要
    引用本文
    摘??要:以煤矸石為主要原料,用普通硅酸鹽水泥作粘結劑,制備了煤矸石-水泥基泡沫混凝土,研究了EVA乳液對煤矸石泡沫混凝土力學性能、吸水率及導熱性能的影響。結果表明,EVA乳液的摻入可有效降低煤矸石泡沫混凝土的密度和導熱系數。隨EVA的摻入量增加,煤矸石泡沫混凝土的抗壓強度、抗折強度呈現先降低后增加的趨勢,而吸水率則呈先上升后下降趨勢。當EVA乳液摻量為7%時,煤矸石泡沫混凝土的抗壓強度達到6.62MPa,抗折強度達到2.01MPa,且其干密度、吸水率和導熱系數均優于普通泡沫混凝土。Abstract:Thecoalgangue-cementfoamedconcreteispreparedbytheuseofcoalgangueandordinaryPortlandcement.TheeffectsofEVAemulsiononthemechanicalproperties,waterabsorptionandthermal-insulatingpropertiesofthecoalgangue-cementfoamedconcretearestudied.TheresultsshowthattheadditionofEVAemulsioncaneffectivelyreducethedensityandthecoefficientofthermalconductivityofthecoalgangue-cementfoamedconcrete.WiththedosageincreaseofEVA,thecompressivestrengthsandtheflexuralstrengthsofthecoalgangue-cementfoamedconcretegetdownfirst,thengoup,whilethewaterabsorptionrateshowstheoppositetendency.WhentheEVAemulsioncontentis7%,thecompressivestrengthofthecoalgangue-cementfoamedconcretereachesto6.62MPa,theflexuralstrengthreachesto2.01MPa,thedensity,andthewaterabsorptionrateandthecoefficientofthermalconductivityareallbetterthantheordinaryfoamconcrete.
    廢棄玻璃細骨料混凝土試驗研究
    廢棄玻璃細骨料混凝土試驗研究
    • 梁炯豐1,2,李愛飛1,楊 鳳1
    2013年第7期
    摘要
    引用本文
    摘 要:研究了廢棄玻璃細骨料取代率對廢棄玻璃細骨料混凝土拌和物坍落度和硬化廢棄玻璃細骨料混凝土立方體抗壓強度、軸心抗壓強度、劈裂抗拉強度、彈性模量的影響規律。試驗結果表明, 隨著廢棄玻璃細骨料取代率的增大,其立方體抗壓強度、軸心抗壓強度、劈裂抗拉強度、彈性模量總體呈降低趨勢;廢棄玻璃細骨料混凝土的立方體抗壓強度、軸心抗壓強度和劈裂抗拉強度與普通混凝土的破壞形式及變化規律相類似。 Abstract: The influences of waste glass fine aggregate replacement ratio on the mixture slump, the cubic and axial compressive strength, the splitting-tensile strength and elastic modulus of the waste glass fine aggregate concrete are researched. The experimental results show that with the increase of the waste glass fine aggregate replace ratio, the cubic and axial compressive strength, the splitting-tensile strength and elastic modulus are reduced. The destruction and the change rule of the cubic and axial compressive strength and the splitting-tensile strength are similar between waste glass fine aggregate concrete and ordinary concrete.
    聚丙烯纖維混凝土及其在環形超長無縫結構中的應用
    聚丙烯纖維混凝土及其在環形超長無縫結構中的應用
    • 曹雙梅1,鐘穎川2,張世海3
    2013年第7期
    摘要
    引用本文
    摘??要:在介紹纖維混凝土的分類及其特征的基礎上,分析了基于“以抗為主”策略的聚丙烯纖維增強混凝土的機理與效果,指出了聚丙烯纖維能有效阻止塑性及硬化早期混凝土收縮裂縫的產生和發展,能提高和增強混凝土抗裂、抗滲等方面的性能?;诰郾├w維混凝土的工程應用范圍和部位,給出了聚丙烯纖維混凝土施工工藝。Abstract:Basedontheintroductionoftheclassificationandcharacteristicsoffiberreinforcedconcrete,themechanismandtheeffectofpolypropylenefibersreinforcedconcretebasedon"Anti-based"strategyareanalyzed,anditisshowedthatpolypropylenefibercaneffectivelypreventtheplasticandearlyhardeningshrinkagecracksofconcrete,improveandenhancetheconcreteanti-cracking,anti-permeabilityandotheraspectsofperformance.Basedontheengineeringapplicationareasandsitesofpolypropylenefiberreinforcedconcrete,theconstructiontechnologyofpolypropylenefibersreinforcedconcreteisgiven.
    空腹復合現澆樓板理論及施工工藝應用研究
    空腹復合現澆樓板理論及施工工藝應用研究
    • 鄧燕華
    2013年第7期
    摘要
    引用本文
    摘 要:為了解決大跨度、大空間現澆厚樓板的缺點,在樓板內永久放置BZS模盒,形成空腔。該工藝不但能提高樓板保溫和隔音效果,而且可減輕結構自重,節省材料,提高抗震性能。本文介紹了內置BZS模盒現澆樓板的施工工藝、設計特點和施工操作關鍵技術及質量控制點。 Abstract: In order to solve the defects of large span or large space cast-in-place thick floor, the BZS module box can be installed in the floor permanently to form a cavity. The technology can improve insulation and sound-proofing effects of the cast-in-place floor with the structural weight reducing, material saving and seismic performance improving. In addition, the construction technology, design features, key technologies of construction operation and quality controlling points of the cast-in-place floor with built-in BSZ die boxes built in are introduced.
    水化熱抑制型膨脹劑在工程中的應用
    水化熱抑制型膨脹劑在工程中的應用
    • 賈福杰1,張加奇2,聶風義2,胡均雨2
    2013年第7期
    摘要
    引用本文
    摘 要:隨著膠凝材料體系的復雜化,混凝土早期放熱量增加,混凝土結構體的冷縮量隨之增加,地下室外墻因冷縮開裂的工程案例頻頻出現。HCSA-R水化熱抑制型膨脹劑具有抑制水泥水化反應速率,推遲水化最高溫峰的出現,同時降低水化最高溫度的效果,在工程中使用能夠起到控制冷縮開裂的效果。 Abstract: With the complication of cementitious materials system, the concrete hydration heat release at early ages is increased. At the same time, the cool shrinkage amount of concrete structure is also increased, so some cracks will frequently occur in the basement exterior wall due to cool shrinkage in real engineering. HCSA-R expansive agent can inhibit the reaction rate of cement hydration, delay the appear of the highest peak of hydration,and reduce the highest temperature of hydration. Therefore, the expansive agent can effectively control shrinkage cracking in construction.
    液壓升降臺在纖維增強水泥波瓦生產過程中的應用
    液壓升降臺在纖維增強水泥波瓦生產過程中的應用
    • 凌衛中
    2013年第7期
    摘要
    引用本文
    摘 要:纖維增強水泥波瓦制造行業大多使用三工位真空堆垛機,而三工位真空堆垛機是將波瓦按一張模板一張瓦坯堆垛到一定數量而形成一垛,這一過程中各需上下動作二次,周期較長,在生產過程中影響了生產線的產量,同時還增加了設備的維護量。針對此現象,提出了為該生產設備增加一套用電氣控制的液壓升降臺,實現液壓升降臺隨堆垛瓦坯的高度而自動動作縮小吸盤上下動作行程的裝置,可提高生產線的產量和減少設備的維護量。 Abstract: Three-position vacuum stackers are mostly used in manufacturing industry of cement corrugated tile reinforced by fiber. The kind of stackers put corrugated tiles to stacking a certain amount by a method of a template match a tile billet to form a stacking. The process of stacking needs up and down movements, and its cycle is long, which will affect the output of the production line during the process of the corrugated tile production, and increase the maintenance of the equipment. According to the phenomenon mentioned above, a method of adding a set of electric control hydraulic lifting platform in the original production equipment is put forward, which can realize the hydraulic lifting platform to automatic narrow up and down action travel of the suckers with changing of the height of stroking tile billets, improve the output of the corrugated tile production line and reduce the maintenance of the equipment.
    高效可靠的鋼棒切斷、墩頭生產線
    高效可靠的鋼棒切斷、墩頭生產線
    • 汪澤民
    2013年第7期
    摘要
    引用本文
    摘 要:為推動管樁行業快速、有效的發展,介紹了一種高效、可靠的鋼棒切斷、鐓頭生產線,并對其組成及生產流程作了解釋說明。 Abstract: In order to promote the rapid and effective development of pile industry, a kind of high efficient and reliable production line for cutting and heading of steel bar is introduced, and the composition and the production process of the automatic production line are explained.
    新型鋼筋骨架滾焊機焊接電極的開發及應用
    新型鋼筋骨架滾焊機焊接電極的開發及應用
    • 趙瑞軍,王立旺,關利民
    2013年第7期
    摘要
    引用本文
    摘 要:比較了不同焊接電極結構對焊接速度、焊接質量以及焊接電極力的影響,介紹了一種新型鋼筋骨架滾焊機焊接電極。該新型焊接電極有效提高了焊接速度,防止了縱向筋扭曲,改善了焊接電極受力條件,全面提高了整體電極裝置的使用壽命。 Abstract: The influence of the different welding electrode structure on the welding speed, welding quality and welding electrode force is compared, and a new type of welding electrode for reinforcement cage roll welders is introduced. The weld electrode can effectively increase the welding speed of reinforcement cages, prevent the longitudinal reinforcement from distortions, improve the welding electrode stress conditions, and improve the service life of the whole electrode device.
    高摻量粉煤灰建筑砂漿性能的研究
    高摻量粉煤灰建筑砂漿性能的研究
    • 金瑞靈1,南 峰1,伍勇華1,裴洪濤2
    2013年第7期
    摘要
    引用本文
    摘 要:研究了粉煤灰摻量對建筑砂漿性能的影響。結果表明,粉煤灰替代水泥的用量達到80%時,建筑砂漿的稠度、分層度、抗壓強度、彈性模量、抗凍性及收縮值性能仍能滿足國家標準要求。 Abstract: The effect of fly ash content on the properties of building mortar is studied. The results show that with the dosage of fly ash at 80%, the consistency, stratification, compressive strength, elastic modulus, frost resistance and shrinkage performance of building mortar can still meet the requirements of the national standard.
    高強箍筋約束高強混凝土壓彎構件抗震性能研究
    高強箍筋約束高強混凝土壓彎構件抗震性能研究
    • 蔣明慧
    2013年第7期
    摘要
    引用本文
    摘 要:通過三組6個高強箍筋約束高強混凝土柱在高軸壓比下的低周反復水平加載試驗及對比分析,研究了該類構件的破壞過程、破壞形態、滯回性能和耗能能力。 Abstract: Through the low-cycle horizontal loading test of six high strength concrete columns confined by high strength stirrups under high axial compression ratio and the comparison analysis, the failure process, failure pattern, hysteretic behaviors and energy consumption ability of the components are researched.
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