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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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    第六期

    顆粒級配對礦渣水泥的性能影響研究
    顆粒級配對礦渣水泥的性能影響研究
    • 曾德強,錢覺時,吳傳明,賈興文
    2010年第6期
    摘要
    引用本文
    摘 要:通過調整粉磨時間獲得不同細度礦渣水泥,并將不同細度水泥按一定比例混合獲得顆粒級配不同的礦渣水泥。試驗研究了細度對水泥標準稠度用水量、凝結時間、強度發展和砂漿收縮變形的影響,結果表明:不同細度的礦渣水泥混合后改善了水泥的顆粒級配,對水泥性能有積極作用;不同細度的礦渣水泥混合后配制的砂漿抗壓和抗折強度略有增加,收縮明顯減小。 Abstract:Slag cements of different fineness are obtained by controlling the grinding time, and according to a certain proportion, these cements are mixed to obtain slag cements of different grain gradation. The effects of cement fineness on water requirement of normal consistency for cement, setting time, strength development and mortar shrinkage are studied. The results indicate that the grain gradation of slag cement is improved by mixing the slag cements of different fineness, which is positive to the properties of slag cement. The compressive strength and flexible strength of mortar mixed by slag cements of different fineness are increased slightly; meanwhile the shrinkage of mortar is decreased obviously.
    聚羧酸減水劑官能團和分子結構對混凝土抗裂性能的影響
    聚羧酸減水劑官能團和分子結構對混凝土抗裂性能的影響
    • 劉 玲1,王可良2,胡廷正3
    2010年第6期
    摘要
    引用本文
    摘 要:以水泥凈漿開裂時間和混凝土28d拉壓比為標準,評價混凝土抗裂性能。分析了合成的聚羧酸減水劑中羧基、氨基、磺酸基、羥基、酯基等各官能團比例、聚醚支鏈長短、減水劑分子量大小等因素對混凝土抗裂性能的影響。實驗結果表明:聚羧酸減水劑分子結構中羧基含量增加,羥酯基與羧基摩爾比為1:1.5時,聚羧酸減水劑對混凝土的抗裂性能較好;支鏈聚合度大,減水劑分子量大,混凝土抗裂性能提高;氨基、磺酸基對混凝土抗裂性影響較小。初步探討了聚羧酸減水劑提高混凝土抗劈裂性能的機理。 Abstract: Based on the ratio of tensile strength to compressive strength of concrete in 28 days and cement paste cracking time, the crack resistance of concrete is evaluated. The main factors influencing crack resistance of concrete, such as ratio of groups of caroxyl, amino, sulphonic, hydroxyl and ester, chains of polyether and molecular weight of synthesized polycarboxyl superplasticizer, are discussed by experiment. The results show that crack resistance of concrete is better when there are many caroxyl or mole ratio of hydroxy-ester to caroxyl is 1:1.5 in molecular structure of polycarboxyl superplasticizer; the crack resistance of concrete increases as level of chains of polyether and molecular weight of synthesized polycarboxyl superplasticizer grow larger; amino and sulphonic have little effects on it. The mechanism of polycarboxyl superplasticizer improving crack resistance of concrete is simply studied.
    大體積混凝土測溫技術在寶鋼工程中的應用
    大體積混凝土測溫技術在寶鋼工程中的應用
    • 趙衛華
    2010年第6期
    摘要
    引用本文
    摘 要:從大體積混凝土的定義、大體積混凝土測溫的必要性、測溫方法、溫升的一般規律、裂縫產生的原因及控制方法等方面對大體積混凝土測溫技術進行了介紹,并列舉寶鋼工程實例詳細敘述了大體積混凝土的測溫過程及溫升規律。 Abstract: The definition of mass concrete, necessity of temperature test in mass concrete, temperature test technique, general rules of temperature rise, cause of the cracks and controlling measures are summarized for the temperature test in mass concrete. And the temperature test procedure in mass concrete and its warming rules in Baosteel project are described in detail.
    基于緊密堆積理論的混凝土配合比設計方法研究
    基于緊密堆積理論的混凝土配合比設計方法研究
    • 張姣龍,馬一祎,陸夢婕,陳衛偉,孟 濤,錢曉倩
    2010年第6期
    摘要
    引用本文
    摘 要:針對現行普通混凝土的常規技術性能要求,研究了一種基于緊密堆積理論的混凝土配合比設計方法。該方法以混凝土配合比設計現行規范為基礎,參考緊密堆積理論,通過試驗擬合出試配強度和漿骨比之間的定量關系以及試配強度和最優砂率的關系,從而為混凝土配合比設計提供最為關鍵的兩個參數(單方用水量和砂率),最終根據配合比設計規范計算得到各組份的配合比設計結果,具有系統化和可程序化的優點。 Abstract: Aiming at the conventional requirements of concrete technology and performance, a mix proportion design method based on the theory of high packing is studied. This design method is based on actual standards, and along with the high packing theory, the quantitative relationship between trial strength and paste-aggregate ratio and the relationship between trial strength and optimum sand ratio are fitted, so as to provide two key parameters in the design of mix proportion (water quantity of cubic meter and sand ratio). Finally the design result of mix proportion is obtained referring to the actual standard. And this method has both of advantages of systematization and procedure.
    國際EPC工程風險因素辨識
    國際EPC工程風險因素辨識
    • 樓海軍
    2010年第6期
    摘要
    引用本文
    摘 要:工程風險因素辨識是風險分析和風險管理的基礎環節。通過對工程風險分類和風險辨識的研究,以及EPC合同模式下工程建設總承包商的工程風險因素辨識,分別從國別、自然、經營、技術、管理等幾個方面,總結了EPC工程的關鍵風險因素,對工程風險因素辨識體系進行了深入探討和完善。 Abstract: The factor identification of engineering venture is the basis of risk analysis and risk management. According to the research on engineering risk classified, risk identification and the factor identification of engineering venture of engineering general contractor under EPC contract model, the key risk factors of EPC project is summarized from the aspects of countries, nature, business, technology and management, and the factor identification system of engineering venture is discussed and improved deeply.
    復合型摻合料高性能混凝土強度與抗氯離子滲透性能研究
    復合型摻合料高性能混凝土強度與抗氯離子滲透性能研究
    • 程宇科,王元綱,張高勤,胡亞風,黃凱健
    2010年第6期
    摘要
    引用本文
    摘 要:研究了復合型摻合料高性能混凝土的抗壓強度及抗氯離子滲透性能,為采用復合型摻合料配制高性能混凝土提供了依據。 Abstract:The compressive strength and anti-chloride ion penetration ability of high performance concrete with compound mineral admixtures are studied, which provide an experimental basis to prepare high performance concrete with compound mineral admixtures.
    高性能與超高性能混凝土管樁的研發與應用
    高性能與超高性能混凝土管樁的研發與應用
    • 馮乃謙1,陳樂雄2,葉浩文3,李 浩4,徐勛龍2,陳潮龍2,周奇明2,齊世坤1
    2010年第6期
    摘要
    引用本文
    摘??要:釆用納米微珠及復合超細粉技術,通過蒸養(85℃,4~5h)獲得了抗壓強度100~110MPa的高性能混凝土管樁?;炷恋牧W性能與耐久性均得到提高,所制管樁的性能優于普通管樁。同時免除了管樁生產過程中的蒸壓工藝,使生產成本下降,是一種省資源、省能源、與環境相協調的混凝土低碳技術。Abstract:Accordingtonanomicro-bead(N-MB)andthetechnologyofcompositeultrafinepowder,thehigh-performanceconcretepilesarepreparedwiththecompressivestrengthof100~110MPabystreamcuring.Themechanismanddurabilityperformanceofconcreteareimproved,andtheperformancesofnewpreparedpilesarebetterthantheoriginalones.Meanwhile,thenewtechnologycanexemptthestream-pressureprocessinthepilesproduction,whichcandecreasetheproductioncost,andit’sakindofconcretelowcarbontechnologycoordinatingwiththeenvironment.
    芯模振動制管工藝設計與質量控制
    芯模振動制管工藝設計與質量控制
    • 紀愛民
    2010年第6期
    摘要
    引用本文
    摘 要:概述了芯模振動制管工藝的應用情況及特點,分析和闡述了芯模振動的基本原理和基本理論,提出了針對原材料、混凝土、喂料、振動與碾壓成型、養護以及工藝布局、工作坑和設備安裝等質量控制要點,并提示了應依據振動原理和振動理論進行芯模振動制管工藝的設計、生產與質量控制,這有助于加深對芯模振動的認識、理解與應用。 Abstract: Application and characteristics of core vibrated tube-making process are summarized. Basic principle and theory of core vibrated casting process are analyzed and represented. Quality control points of raw materials, concrete, feeding, vibrating, roller compaction confectioning, curing, technics layout, work pit and equipment installation are brought forward., The design, production and quality controls of core vibrated tube-making process should be made according to the principle and theory of vibration, and it is useful to acquaint, understand and apply the core vibrated casting process in depth.
    預應力混凝土管樁生產安全事故分析
    預應力混凝土管樁生產安全事故分析
    • 蔣元海1,潘加根2
    2010年第6期
    摘要
    引用本文
    摘 要:通過對我國現階段不同生產規模、不同建廠時間、不同地區分布的18家管樁生產企業近年來發生的381起安全事故統計,提出了目前我國管樁企業生產中安全事故發生的各個工序存在的隱患程度,分析了事故產生的4個方面的主要原因。 Abstract:Through the 381 accidents happened in recent years in 18 piles producing enterprises with different production scale, manufacturing time and area distribution at the present stage, the potential hazards are brought out for each procedure of occurring accidents in piles producing enterprises, and the main reasons of occurring accidents are analyzed in four aspects.
    管樁常壓蒸汽養護溫度變化測量試驗
    管樁常壓蒸汽養護溫度變化測量試驗
    • 李成龍
    2010年第6期
    摘要
    引用本文
    摘 要:根據試驗測量結果,闡述了管樁生產過程中常壓蒸汽養護的溫度變化規律,管樁混凝土與環境溫度的變化關系,使養護溫度能夠更好的控制在要求范圍內,合理地調整工藝制度。 Abstract:According to the results of experimental measures, temperature changing rules of normal pressure steam curing during the production process of cylinder piles are introduced. The changing relationship between concrete cylinder piles and environmental temperature lets the curing temperature can be better controlled in required range and the process system can be reasonably coordinated.
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