Natarajan Sakthieswaran, Murugesan Priyanka
Department of Civil Engineering, Anna University Regional Campus Tirunelveli, Tamilnadu 627007, India.
Department of Civil Engineering, Satyam College of Engineering and Technology, Kanyakumari, Tamilnadu 629301, India.
Materials (Basel). 2019 Feb 4;12(3):476. doi: 10.3390/ma12030476.
The aim of this paper is to study experimentally the effect of marble powder and green sand as partial substitute for fine aggregate on the strength and durability of M40 grade concrete. The use of metakaolin as a pozzolanic admixture by using as binder replacement is also studied to assess the properties with respect to fresh and hardened state. Several formulations were prepared with constant water-binder ratio 0.4 and varying percentages of marble powder and green sand. The results indicated that the properties of concrete were much enhanced by extent incorporation of marble powder and green sand as fine aggregate and metakaolin for cement when compared to normal concrete. The microscopic studies also confirmed the viability of using green sand and marble powder as fine aggregates.
本文的目的是通过实验研究用大理石粉和绿砂作为细集料的部分替代品对M40级混凝土强度和耐久性的影响。还研究了使用偏高岭土作为火山灰掺合料替代胶凝材料，以评估其在新拌状态和硬化状态下的性能。制备了几种水胶比恒定为0.4、大理石粉和绿砂百分比不同的配方。结果表明，与普通混凝土相比，掺入大理石粉和绿砂作为细集料以及偏高岭土替代水泥，混凝土的性能有了很大提高。微观研究也证实了使用绿砂和大理石粉作为细集料的可行性。
