A study on investigating the effect of lignosulfonate-based com-paction aid admixture dosage on the properties of roller com-pacted concrete

IF 1.4 4区工程技术 Revista de la Construccion Pub Date : 2022-01-01 DOI:10.7764/rdlc.21.3.737

Saadet Gokce Gok, I. Kilic

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Abstract

In this study, roller compacted concrete was produced by using a modified lignosulfonate-based chemical admixture which is suitable for use in wet, semi-dry or zero slump concrete, and the effect of admixture dosage on the physical and mechanical properties of the concrete was investigated. In the production of roller compacted concrete, the cement content was 300 kg/m3 and the chemical admixture dosages have been changed as 0%, 0.3%, 0.6% and 0.9%. Percentage of compactibility, total water absorption, unit weight, ultrasonic pulse velocity, dynamic modulus of elasticity, concrete compressive strength at the ages of 3 and 28 days were determined for the roller compacted concrete specimens. Roller compacted concrete with the lowest percentage of water absorption, the highest percentage of compactibility, ultrasonic pulse velocity, compactness, compressive strength and dynamic modulus of elasticity was the concrete produced with 0.6% admixture dosage. With the concrete design and the chemical admixture in question, it has been observed that the optimum dosage of chemical admixture for the production of the best quality concrete in terms of the concrete properties examined was 0.6%.

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木质素磺酸基促密实外加剂掺量对碾压混凝土性能影响的研究

本研究采用一种适用于湿、半干、零坍落度混凝土的改性木质素磺酸基化学掺合料制备碾压混凝土，并研究掺合料掺量对混凝土物理力学性能的影响。在碾压混凝土生产中，水泥掺量为300 kg/m3，化学外加剂掺量为0%、0.3%、0.6%、0.9%。测定了碾压混凝土试件的压实率、总吸水率、单位重量、超声脉冲速度、动态弹性模量、3 d和28 d混凝土抗压强度。掺入量为0.6%时，混凝土的吸水率最低，压实率、超声脉冲速度、压实度、抗压强度和动态弹性模量最高。根据混凝土设计和化学外加剂的问题，可以观察到，根据所检查的混凝土性能，生产最佳质量混凝土的化学外加剂的最佳用量为0.6%。

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来源期刊

Revista de la Construccion 工程技术-工程：土木

CiteScore

2.30

自引率

21.40%

发文量

期刊介绍： The Journal of Construction is aimed at professionals, constructors, academics, researchers, companies, architects, engineers, and anyone who wishes to expand and update their knowledge about construction. We therefore invite all researchers, academics, and professionals to send their contributions for assessment and possible publication in this journal. The publications are free of publication charges. OBJECTIVES The objectives of the Journal of Construction are: 1. To disseminate new knowledge in all areas related to construction (Building, Civil Works, Materials, Business, Education, etc.). 2. To provide professionals in the area with material for discussion to refresh and update their knowledge. 3. To disseminate new applied technologies in construction nationally and internationally. 4. To provide national and foreign academics with an internationally endorsed medium in which to share their knowledge and debate the topics raised.