The rapid growth in the construction sector leads to high demand for construction materials and hence global research studies focus on the use of sustainable alternative materials to meet the demand. Sugarcane bagasse ash is a by-product from sugar industry and about 44,220 tonnes/day is disposed of as waste in India. Bagasse ash consists of reactive silica and can be used as a sustainable source material in alkali activated binder instead of disposed as a waste. Similarly, marble waste from marble processing plants can be used as an alternative for fine aggregates. Alkali-activated concrete has high strength and durability compared to conventional cement concrete. Bagasse ash can be blended with other industrial by-products like slag to produce high quality of alkali-activated concrete without cement. The combined effect of bagasse ash and marble waste in alkali-activated mortar is not yet investigated. This present study focuses on the performance of bagasse ash and marble waste as a precursor and fine aggregates respectively in alkali-activated mortar. Influence of three different molarities (6 M, 8 M and 10 M) and two curing methods (heat and ambient curing) and three levels of replacement using bagasse ash (10%, 20% and 30%) were investigated. This experimental results showed that a considerable improvement in compressive strength for bagasse ash with marble waste blended alkali-activated mortar specimens compared to only bagasse ash blended mortar specimens. Moreover, the strength of bagasse ash blended specimens was increased with molarity. Ambient cured bagasse ash blended specimens exhibited higher strength compared to the heat cured specimens.

中文翻译：

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甘蔗渣和大理石废料的可持续建筑用碱活化粘结剂的开发

建筑业的快速增长导致对建筑材料的大量需求，因此全球研究集中在使用可持续替代材料来满足需求上。甘蔗渣灰是制糖业的副产品，在印度每天约有44,220吨作为废物处理。蔗渣灰由反应性二氧化硅组成，可作为碱活化粘合剂中的可持续原料，而不是作为废物处理。同样，来自大理石加工厂的大理石废料也可以用作细骨料的替代品。与传统的水泥混凝土相比，碱活化的混凝土具有较高的强度和耐久性。甘蔗渣灰可与其他工业副产品（如矿渣）混合，以生产高质量的碱活化混凝土而无水泥。尚未研究甘蔗渣灰和大理石废料在碱活化砂浆中的综合作用。本研究的重点是蔗渣灰和大理石废料在碱活化砂浆中分别作为前体和细骨料的性能。研究了三种不同摩尔浓度（6 M，8 M和10 M）和两种固化方法（热和环境固化）的影响以及使用蔗渣灰分的三种替代水平（10％，20％和30％）的影响。该实验结果表明，与仅用蔗渣混合灰浆的标本相比，掺有大理石废料的碱活化砂浆标本的蔗渣灰分的抗压强度有了显着提高。此外，蔗糖灰混合标本的强度随摩尔浓度的增加而增加。