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所在平台: Udemy |
课程主页: https://www.udemy.com/course/concrete-mix-design-using-doe-british-method/
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Coursera 课程总结：混凝土配合比设计（DOE - 英制方法） 本课程将深入探讨混凝土配合比设计的核心概念和实践，特别是采用在英国乃至全球广泛应用的英制（DOE）方法。 **课程概述：** 混凝土配合比设计是确定水泥、砂和骨料最佳比例的关键过程，旨在使混凝土达到结构所需的特定强度。这门科学方法确保了在经济高效的前提下，实现混凝土的理想性能。 **DOE 方法详解：** 该课程将重点介绍英国DOE（Department of the Environment）方法，该方法源于1950年的 "Road Note No 4"，并在1975年和1988年经过修订和更新，以适应不断变化的英国标准。DOE方法适用于所有类型的混凝土，并在其悠久的历史中积累了丰富的实践经验。 **DOE 配合比设计的主要步骤：** 课程将系统地引导学员完成以下配合比设计阶段： 1. **确定目标平均强度：** 设定混凝土必须达到的平均强度标准。 2. **确定水灰比：** 找到实现目标强度所需的最佳水与水泥的比例。 3. **确定含水量：** 根据选定的配合比和施工条件，确定所需的总用水量。 4. **确定水泥用量：** 根据含水量和水灰比，计算出所需的水泥量。 5. **确定总骨料用量：** 计算干混料中各类骨料的总质量。 6. **确定细骨料（砂）用量：** 根据骨料的级配和体积，计算出所需砂子的比例。 7. **确定特定体积的混凝土配合比：** 整合以上所有参数，得出每立方米混凝土的精确配合比。 本课程为期一个学期，通过对DOE方法的深入解析和实际操作指导，帮助学员掌握科学的混凝土配合比设计技术。
CONCRETE MIX DESIGNConcrete mix design is the process of finding the right proportions of cement, sand, and aggregates for concrete to achieve target strength in structures.Mix Design is the science of determining the relative proportions of the ingredients of concrete to achieve the desired properties in the most economical wayConcrete mix design is the process of finding the right proportions of cement, sand, and aggregates for concrete to achieve target strength in structures.BS - CONCRETE MIX DESIGN (DOE)DOE METHOD OF CONCRETE MIX DESIGN:The British method of concrete mix design, popularly referred to as the "DOE method", is used in the United Kingdom and other parts of the world and has a long-established record. The DOE method of mix design is applicable to all types of concrete mixes. The method originates from the "Road Note No 4" which was published in Great Britain in 1950. In 1975 the note was replaced by the "Design of Normal Concrete Mixes", published by the British Department of the Environment (DOE). In 1988 the "Design of Normal Concrete Mixes" was issued in a revised and updated edition to allow for changes in various British Standards.DOE mix design generally involves the following stages.Step 1: Determine the target mean strengthStep 2: Determine the water/cement ratioStep 3: Determine the water contentStep 4: Determine the cement contentStep 5: Determine the total aggregate contentStep 6: Determine the fine aggregate contentStep 7: Determine the mix proportion of the concrete mix for a given volume
