Concrete is the most widely used construction material in the world. In particular, cementitious composites that contain reinforced fibers have a relatively large amount of cement. Therefore, in this study, the target is to maintain at least 90% of the performance along with a reduction of CO 2 emissions from the material stage during fiber-reinforced cementitious composites (FRCCs) production by applying fly ash (FA) and recycled sand (RS). To calculate the amount of CO 2 emission at the stage of manufacturing the FRCCs, life cycle inventory database (LCI DB) were referenced from domestic and Japan. As the performance efficiency indicators, simple equations to evaluate the amount of CO 2 emission of FRCCs were then formulated as a function of the replacement ratio of FA and RS. And binder and CO 2 intensities were analyzed by FRCCs strength. Based on the results for the test, a mix of FA 25% and RS 25% of W/B 0.45, is considered most suitable in terms of performance of FRCCs and reduction of CO 2 emissions.

中文翻译：

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粉煤灰和再生骨料对FRCCs强度和碳排放影响的影响

混凝土是世界上使用最广泛的建筑材料。特别是，含有增强纤维的水泥复合材料具有相对大量的水泥。因此，在本研究中，目标是通过应用粉煤灰 (FA) 和再生砂，在纤维增强水泥基复合材料 (FRCC) 生产过程中，保持至少 90% 的性能，同时减少材料阶段的 CO 2 排放。 (RS)。为了计算FRCC制造阶段的CO 2 排放量，参考了国内和日本的生命周期清单数据库（LCI DB）。作为性能效率指标，然后将评估 FRCC 的 CO 2 排放量的简单方程制定为 FA 和 RS 替代率的函数。并通过FRCCs强度分析粘结剂和CO 2 强度。