Properties of alkali activated masonry units incorporating Linz-Donawitz (LD) steel slag aggregates and Mangalore tile waste (MTW)

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Express Pub Date : 2024-09-17 DOI:10.1088/2053-1591/ad7812

Gana G S, Poornachandra Pandit and Shreelaxmi Prashanth

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Abstract

The existing cement masonry units consume cement, natural resources and fuel making it less sustainable. The unrestrained utilization of natural resources and substantial production of industrial wastes has led to reuse and recycling for sustainable development. Among the prevailing industrial wastes, steel slags are presently dumped in landfills. Previous studies have utilized Linz Donawitz (LD) slag aggregates as a partial replacement for natural aggregates. On the other hand, the locally available Mangalore tile waste (MTW) was studied as a natural aggregate replacement. In the current investigation, the LD slag aggregates, and the MTW fine powder, aggregates were incorporated into the masonry system and accessed their fresh properties such as setting time, flow and hardened property -compressive strength, along with microstructural investigations. The masonry mixes indicated that the LD slag type 3 and M sand-based masonry unit exhibited higher compressive strength, around 40 MPa, and can be categorized as heavy-duty bricks according to IS 2180:1988.

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含有林茨-多纳维茨（LD）钢渣集料和芒格洛尔瓷砖废料（MTW）的碱活性砌体单元的性能

现有的水泥砌体结构需要消耗水泥、自然资源和燃料，因此可持续性较差。对自然资源的无节制利用和大量工业废物的产生，导致了可持续发展的再利用和再循环。在普遍存在的工业废物中，钢渣目前被倾倒在垃圾填埋场。以往的研究利用林茨-多纳维茨（LD）钢渣集料部分替代天然集料。另一方面，还研究了当地可用的芒格洛尔瓷砖废料（MTW）作为天然骨料的替代品。在当前的研究中，LD 矿渣集料和 MTW 细粉集料被加入到砌筑系统中，并对它们的新特性（如凝结时间、流动性和硬化特性--抗压强度）以及微观结构进行了研究。砌体混合物表明，LD 3 型矿渣和 M 型砂基砌体单元的抗压强度较高，约为 40 兆帕，可根据 IS 2180:1988 标准归类为重型砖。

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来源期刊

Materials Research Express MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.50

自引率

4.30%

发文量

640

审稿时长

12 weeks

期刊介绍： A broad, rapid peer-review journal publishing new experimental and theoretical research on the design, fabrication, properties and applications of all classes of materials.