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一、前言冬季施工的混凝土,入春前,必须具有足够的抗冻性。这是个很重要的问题。混凝土的抗冻性,是个比较复杂的问题。它不仅与含气量,气泡间距和水灰比等内在因素有关,也与冻结温度和湿度等外界因素有关。本文除研究养护条件对抗压强度的影响以
I. Preface Concrete for winter construction must have sufficient frost resistance before entering spring. This is a very important issue. The frost resistance of concrete is a more complicated issue. It is not only related to internal factors such as gas content, bubble spacing and water-cement ratio, but also related to external factors such as freezing temperature and humidity. In addition to studying the effect of curing conditions on compressive strength