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问题
42.5水泥3天抗压强度规定
释义
法律分析:
42.5水泥3d抗压强度不小于17Mpa.28d抗压强度不小于42.5MPa。3d抗折强度不小于3.5Mpa 28d抗折强度不小于6.5MPa
法律依据:
《中华人民共和国标准化法》 第二条 本法所称标准(含标准样品),是指农业、工业、服务业以及社会事业等领域需要统一的技术要求。
标准包括国家标准、行业标准、地方标准和团体标准、企业标准。国家标准分为强制性标准、推荐性标准,行业标准、地方标准是推荐性标准。
强制性标准必须执行。国家鼓励采用推荐性标准。
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更新时间:2026/5/12 20:32:34