Scholarlink

Natural resources are finite and hence its over-exploitation will result in scarcity of the material in future. Judicious use of natural materials will lead to sustainable development. Due to tremendous growth in infrastructure projects and the housing sector, concrete is the most demanding construction material. In this investigation comparison was carried out for concrete incorporating natural river sand (NRS) and concrete with geopolymer fly ash sand (GFAS). Pulverized coal fly ash (FA) and the solution of a sodium-based alkaline activator were used to make GFAS. GFAS was produced with 4 Molar NaOH solutions and the ratio of sodium silicate/sodium hydroxide (Na2SiO3/NaOH) between 1.5 and 2.5 with an incremental increase of 0.5. The study aims to compare the mechanical properties and durability characteristics of concrete with 25% and 50% GFAS as replacement of NRS in concrete with those of concrete with 100% NRS. It was observed in the investigation that the mechanical strength of the concrete containing 25% of NRS substituted with GFAS was suitable and comparable to that of NRS in concrete. This suggests that it is feasible to use geopolymer fly ash sand in place of river sand in construction projects to the tune of 25% replacement of NRS.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Incorporation of Geopolymer Fly Ash Sand in Mortar and Concrete

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Shrusti Bhavin Patel,
  • Shivanjali Rawat,
  • Sonal Pragnesh Thakkar

摘要

Natural resources are finite and hence its over-exploitation will result in scarcity of the material in future. Judicious use of natural materials will lead to sustainable development. Due to tremendous growth in infrastructure projects and the housing sector, concrete is the most demanding construction material. In this investigation comparison was carried out for concrete incorporating natural river sand (NRS) and concrete with geopolymer fly ash sand (GFAS). Pulverized coal fly ash (FA) and the solution of a sodium-based alkaline activator were used to make GFAS. GFAS was produced with 4 Molar NaOH solutions and the ratio of sodium silicate/sodium hydroxide (Na2SiO3/NaOH) between 1.5 and 2.5 with an incremental increase of 0.5. The study aims to compare the mechanical properties and durability characteristics of concrete with 25% and 50% GFAS as replacement of NRS in concrete with those of concrete with 100% NRS. It was observed in the investigation that the mechanical strength of the concrete containing 25% of NRS substituted with GFAS was suitable and comparable to that of NRS in concrete. This suggests that it is feasible to use geopolymer fly ash sand in place of river sand in construction projects to the tune of 25% replacement of NRS.