力学性能和热性能评价超高纤维钢筋混凝土的工程应用------土木工程 专业 毕业设计 外文翻译.doc
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力学性能和热性能评价超高纤维钢筋混凝土的工程应用------土木工程 专业 毕业设计 外文翻译,abstractultra high performance fiber reinforced concrete (uhpfrc) is a cement-based material, which behaves like a low-porosity ceramic material with excellent ...
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Abstract
Ultra High Performance Fiber Reinforced Concrete (UHPFRC) is a cement-based material, which behaves like a low-porosity ceramic material with excellent mechanical performance. This work was aimed to study soft cast (flowable at casting time) UHPFRC s and, in particular, the time development of compressive strength, flexural strength and elastic modulus was monitored for UHPFRC prepared by varying the water to cement ratio from 0.20 to 0.32. Silica fume, steel fibers and acrylic-based superplasticizer were employed to prepare the UHPFRC mixtures. Optimum workability and mechanical performance were obtained with a water to cement ratio of 0.24. Thermal conductivity was determined for the same UHPFRC, in the presence and in the absence of steel fibers. The scope was to eva luate the effect of steel fibers on the thermal conductivity coefficient, in order to predict the UHPFRC capacity for heat loss. This information as well as its drilling characteristics, in order to test its suitability to be machined, could be essential for possible fields of application such as in mechanical engineering, where UHPFRC materials can be employed as high abrasion-resistant dies in the molding process of metal and polymer products.
_ 2011 Elsevier Ltd. All rights reserved.
Keywords Machine workability Mechanical performance UHPFRC
超高性能纤维混凝土(UHPFRC)是一种水泥基材料，它的行为就像一个低孔隙度的陶瓷材料，具有优良的机械性能。这项工作是为了研究研究UHPFRC软铸造年代(浇筑时刻流动)，特别是时代发展的压缩强度、抗弯强度和弹性模量进行了UHPFRC准备，通过改变水灰比在0.20 ~ 0.32之间。硅灰、钢纤维和acrylic-based增塑剂用来准备UHPFRC的混合物。工作性和力•学性能最佳得到水灰比为0.24。导热系数确定了一样UHPFRC，存在着没有钢纤维。范围的影响是评价钢纤维导热系数上，以预测UHPFRC介绍评价钢纤维导热系数上,以预测能力UHPFRC热量损失。这它的钻探信息特征，旨在测试的适用性加工，有可能必不可少的可能应用领域如在机械工程，在那里UHPFRC材料可采用高耐磨模具成型工艺的金属和聚合物产品。
2011年教育部博士点基金有限公司版权所有
关键词: 机性能 力学性能 UHPFRC 硅灰 导热系数
Ultra High Performance Fiber Reinforced Concrete (UHPFRC) is a cement-based material, which behaves like a low-porosity ceramic material with excellent mechanical performance. This work was aimed to study soft cast (flowable at casting time) UHPFRC s and, in particular, the time development of compressive strength, flexural strength and elastic modulus was monitored for UHPFRC prepared by varying the water to cement ratio from 0.20 to 0.32. Silica fume, steel fibers and acrylic-based superplasticizer were employed to prepare the UHPFRC mixtures. Optimum workability and mechanical performance were obtained with a water to cement ratio of 0.24. Thermal conductivity was determined for the same UHPFRC, in the presence and in the absence of steel fibers. The scope was to eva luate the effect of steel fibers on the thermal conductivity coefficient, in order to predict the UHPFRC capacity for heat loss. This information as well as its drilling characteristics, in order to test its suitability to be machined, could be essential for possible fields of application such as in mechanical engineering, where UHPFRC materials can be employed as high abrasion-resistant dies in the molding process of metal and polymer products.
_ 2011 Elsevier Ltd. All rights reserved.
Keywords Machine workability Mechanical performance UHPFRC
超高性能纤维混凝土(UHPFRC)是一种水泥基材料，它的行为就像一个低孔隙度的陶瓷材料，具有优良的机械性能。这项工作是为了研究研究UHPFRC软铸造年代(浇筑时刻流动)，特别是时代发展的压缩强度、抗弯强度和弹性模量进行了UHPFRC准备，通过改变水灰比在0.20 ~ 0.32之间。硅灰、钢纤维和acrylic-based增塑剂用来准备UHPFRC的混合物。工作性和力•学性能最佳得到水灰比为0.24。导热系数确定了一样UHPFRC，存在着没有钢纤维。范围的影响是评价钢纤维导热系数上，以预测UHPFRC介绍评价钢纤维导热系数上,以预测能力UHPFRC热量损失。这它的钻探信息特征，旨在测试的适用性加工，有可能必不可少的可能应用领域如在机械工程，在那里UHPFRC材料可采用高耐磨模具成型工艺的金属和聚合物产品。
2011年教育部博士点基金有限公司版权所有
关键词: 机性能 力学性能 UHPFRC 硅灰 导热系数
