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    • 5. 发明公开
    • 온돌바닥 미장용 조성물
    • 辐射加热板组合物
    • KR1020130050667A
    • 2013-05-16
    • KR1020110115868
    • 2011-11-08
    • (주)대우건설유진기업 주식회사
    • 박상준박형철고정원유재강김경민류득현전준영김훈상황해정유창달
    • C04B18/14C04B18/06C04B14/06C04B24/24
    • Y02W30/92Y02W30/94C04B18/04C04B14/06C04B2103/20C04B2103/34Y02W30/91
    • PURPOSE: A composition for pastering an ondol floor is provided to allow environment-friendlyness, an excellent workability at the construction, and excellent compressive strength and resistance against shrinkage deformation after the construction by mixing a dry mortar composition using industrial byproducts and a constructability enhancer. CONSTITUTION: A composition for plastering an ondol floor is a mixture of a dry mortar composition and a constructability enhancer. The dry mortar composition is formed of a blast furnace slag micropowder, cogeneration fly ash, incinerated paper mill sludge ash, gypsum, and sand. The dry mortar composition includes 3.0 to 15.0wt% of the blast furnace slag micropowder, 10.0 to 40.0wt% of the cogeneration fly ash, 3.0 to 10.0wt% of the incinerated paper mill sludge ash, 0.5 to 2.5wt% of the gypsum, and 50.0 to 80.0wt% of the sand. 0.05 to 0.15wt% of the constructability enhancer based on a weight of the dry mortar composition is mixed. The constructability enhancer comprises 70.0 to 90.0 wt% of superplasticizer and 10.0 to 30.0wt% of a retarder. The superplasticizer is at least one of a polycarboxylic acid based superplasticizer, a naphthalyene based superplasticizer, a lignin based superplasticizer, and a melamine based superplasticizer. The retarder is at least one of a boron retarder and a phosphoric acid retarder.
    • 目的:通过混合使用工业副产品的干砂浆组合物和可施工性增强剂,提供了用于粘贴ondol地板的组合物,以使得环境友好性,施工时的优异的可加工性和施工后的优异的抗压强度和抗收缩变形性。 构成:用于抹灰地板的组合物是干砂浆组合物和构建性增强剂的混合物。 干砂浆组成由高炉渣微粉,热电粉煤灰,焚烧造纸厂污泥灰,石膏和砂组成。 干砂浆组成包括高炉渣微粉3.0〜15.0重量%,热电粉煤灰10.0〜40.0重量%,焚烧造纸厂污泥灰3.0〜10.0重量%,石膏0.5〜2.5重量% 和50.0〜80.0重量%的砂。 将基于干砂浆组合物重量的可施工性增强剂的0.05至0.15重量%混合。 构建性增强剂包含70.0〜90.0重量%的超增塑剂和10.0〜30.0重量%的缓凝剂。 超增塑剂是基于多元羧酸的超增塑剂,基于萘树脂的超增塑剂,木质素基超增塑剂和三聚氰胺基超增塑剂中的至少一种。 缓凝剂是硼延迟剂和磷酸缓凝剂中的至少一种。
    • 6. 发明授权
    • 초음파속도에 기초한 슬립폼 인양여부 평가방법
    • 基于超声波速度的滑移提升的有效性测试方法
    • KR101031165B1
    • 2011-04-27
    • KR1020090042382
    • 2009-05-15
    • (주)대우건설
    • 오보환유재강
    • E04G11/22G01M99/00G01N29/024
    • 본 발명은 수직구조물 축조를 위해 적용되는 슬립폼의 인양시기를 결정하는 방법에 관한 것이다.
      본 발명은 (a) 슬립폼 내에 타설되는 콘크리트의 배합조건에 맞춘 모르타르로 공시체를 제작하는 단계; (b) 상기 공시체의 양생기간별 온도를 측정하여 적산온도를 산출하고 적산온도-관입저항 관계그래프를 도출하는 단계; (c) 슬립폼 내에 타설된 콘크리트의 양생기간별 온도를 측정하여 적산온도를 산출하고, 상기 슬립폼을 관통하는 초음파속도를 계측하여 적산온도-초음파속도 관계그래프를 도출하는 단계; 및 (d) 상기 적산온도-관입저항 관계그래프 및 적산온도-초음파속도 관계그래프를 통해 목표 관입저항 범위에 해당하는 초음파속도가 계측되는지를 확인하여 슬립폼 인양여부를 결정하는 단계; 를 포함하는 초음파속도에 기초한 슬립폼 인양여부 평가방법을 제공한다.
      슬립폼, 콘크리트, 공시체, 적산온도, 초음파, 관입저항
    • 7. 发明公开
    • 구조체콘크리트의 압축강도 평가방법
    • 用于结构混凝土的压缩强度评估方法
    • KR1020110007502A
    • 2011-01-24
    • KR1020090065051
    • 2009-07-16
    • (주)대우건설
    • 오보환박상준유재강고정원류동우김경민
    • G01N33/38G01K3/04G01M99/00
    • PURPOSE: A method for evaluating compressive strength of structural concrete is provided to efficiently manage a construction process and to improve reliability of concrete quality. CONSTITUTION: A method for evaluating compressive strength of structural concrete comprises: a step of making a test piece having sample mixing condition with the structural concrete; a step of checking curing period and compressive strength of the test piece to draw accumulated temperature-compressive strength relation graph; a step of measuring the temperature by each curing period of structure concrete built in a form to calculate the accumulate temperature; and a step of estimating compressive strength of the structural concrete.
    • 目的:提供一种评估结构混凝土抗压强度的方法,有效管理施工过程,提高混凝土质量的可靠性。 构成:评价结构混凝土的抗压强度的方法,其特征在于,包括以下步骤:将结构混凝土的样品混合条件制成试样; 检查试件的固化时间和抗压强度以绘制累积的温度 - 压缩强度关系图的步骤; 测量结构混凝土每个固化周期的温度的步骤,以形式计算累积温度; 以及估计结构混凝土抗压强度的步骤。