Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Application of Granite Fines to Substitute Sand in Concrete Production
Nowadays, sustainable construction by using alternative concrete materials has been advocated around the globe due to the exhaustion of major sources of natural sand (NS), compounded with environmental and ecological considerations. In the meantime, a huge amount of granite fines (GF) as a by-product of crushing and sizing of granite in production of building stone for masonry industry, tile, coarse aggregate for the concrete industry, etc. are produced every year which generally treated as waste. And the landfilling of them causes serious environmental problems. Considering the stable source and sand-like physical properties of GF, it can serve as an ideal alternative material to substitute sand as the fine aggregate component in the production of concrete, which not only minimizes environmental issues but also provides economic benefits, especially in small countries such as Singapore with limited or almost zero sources of sand. The technical feasibility is conducted for three classes of concrete, i.e., C32/40, C40/50, and C50/60 produced with GF with varying fines content which is defined as the percentage of particle size finer than 62.5 μm (10%, 16%, and 22%) and percentage substitution (0%, 30%, 50%, 75%, and 100%). The technical feasibility of producing concrete with GF substitution is then evaluated based on performance comparisons between specimens with GF and NS (0% substitution) with regards to fresh concrete properties (workability through slump test, and setting time) and durability of hardened concrete properties (water absorption, water penetration, and rapid chlorine penetration).
Application of Granite Fines to Substitute Sand in Concrete Production
Nowadays, sustainable construction by using alternative concrete materials has been advocated around the globe due to the exhaustion of major sources of natural sand (NS), compounded with environmental and ecological considerations. In the meantime, a huge amount of granite fines (GF) as a by-product of crushing and sizing of granite in production of building stone for masonry industry, tile, coarse aggregate for the concrete industry, etc. are produced every year which generally treated as waste. And the landfilling of them causes serious environmental problems. Considering the stable source and sand-like physical properties of GF, it can serve as an ideal alternative material to substitute sand as the fine aggregate component in the production of concrete, which not only minimizes environmental issues but also provides economic benefits, especially in small countries such as Singapore with limited or almost zero sources of sand. The technical feasibility is conducted for three classes of concrete, i.e., C32/40, C40/50, and C50/60 produced with GF with varying fines content which is defined as the percentage of particle size finer than 62.5 μm (10%, 16%, and 22%) and percentage substitution (0%, 30%, 50%, 75%, and 100%). The technical feasibility of producing concrete with GF substitution is then evaluated based on performance comparisons between specimens with GF and NS (0% substitution) with regards to fresh concrete properties (workability through slump test, and setting time) and durability of hardened concrete properties (water absorption, water penetration, and rapid chlorine penetration).
Application of Granite Fines to Substitute Sand in Concrete Production
Lecture Notes in Civil Engineering
Geng, Guoqing (Herausgeber:in) / Qian, Xudong (Herausgeber:in) / Poh, Leong Hien (Herausgeber:in) / Pang, Sze Dai (Herausgeber:in) / Qian, Shunzhi (Autor:in) / Tan, Kang Hai (Autor:in) / Li, Ziyang (Autor:in) / Lim, Namyo Salim (Autor:in) / Jinping, Lu (Autor:in) / Fun, Wong Sook (Autor:in)
14.03.2023
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Carbonated Ladle Slag Fines for Carbon Uptake and Sand Substitute
| Online Contents | 2009
Carbonated Ladle Slag Fines for Carbon Uptake and Sand Substitute
| British Library Online Contents | 2009
Retaining fines in concrete sand
Engineering Index Backfile | 1942