用再生混凝土骨料(rca)、微二氧化硅和聚丙烯纤维制成的混凝土强度特性

A. O. Adetukasi, A. Olowofoyeku, H. Alaka, Omowumi Adebayo
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引用次数: 0

摘要

再生混凝土骨料已被广泛研究,以取代混凝土中的天然粗骨料,然而,其混凝土在获得与普通混凝土相同的力学性能方面存在一些不足。本研究工作试图通过添加外加剂(微二氧化硅和高效减水剂)和聚丙烯纤维来改善含有再生粗骨料的混凝土的强度特性。结果表明,外加剂在所有RCA置换水平下均显著改善了CRCA的可加工性和力学性能。添加PPF对CRCA的抗折和劈裂拉伸强度有显著影响,但对抗压强度影响不大。
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STRENGTH CHARACTERISTICS OF CONCRETE MADE WITH RECYCLED CONCRETE AGGREGATE (RCA), MICRO-SILICA AND POLYPROPYLENE FIBRE
Recycled concrete aggregate has been widely researched to be capable of replacing natural coarse aggregate in concrete, however, with some inadequacies in its concrete’s ability to attain the same feat in mechanical properties as normal concrete. This research work attempts to improve the strength characteristics of concrete containing recycled coarse aggregate with the addition of admixtures (Micro-Silica and Superplasticizer) and Polypropylene fibre. Results showed that admixtures significantly improved the workability and mechanical properties of CRCA at all RCA replacement levels. Addition of PPF had significant effect on the flexural and splitting tensile strengths of CRCA, but not much impact on the compressive strength.
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审稿时长
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