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Xuan Liu, Tao Jiang, Chenglong Li, Mingyu Wan, Wenzhu Xuan and Xingfu Wang
This research used fly ash and slag to create geopolymer foam concrete. They were activated with an alkali, resulting in a chemical reaction that produced a gel that strengthened the concrete?s structural integrity. The experimental approach involved var...
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Genbao Zhang, Zhiqing Ding, Runhong Zhang, Changfu Chen, Guihai Fu, Xiao Luo, Yufei Wang and Chao Zhang
Construction and demolition (C&D) waste has become a research hotspot due to the need for environmental sustainability and strength enhancement of cementitious materials. However, wider applications of C&D waste are limited, as its non-homogeneou...
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Vitor A. Nunes, Prannoy Suraneni, Augusto C. S. Bezerra, Carlos Thomas and Paulo H. R. Borges
Steel slag (SS) is a secondary material from steelmaking production with little commercial value. Its volumetric expansion and low reactivity limit the use of SS in Portland cement (PC)-based materials. This study investigated the potential use of basic ...
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Miroslava Hujova, Patricia Rabelo Monich, Jaroslav Sedlacek, Miroslav Hnatko, Jozef Kraxner, Dusan Galusek and Enrico Bernardo
Both vitrified bottom ashes (VBAs) and waste glasses are forms of inorganic waste material that are widely landfilled, despite having some economic potential. Building on previous studies, we prepared glass-ceramic foams by the combination of VBA with ei...
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Galal El-Habaak, Mohamed Askalany and Mahmoud Abdel-Hakeem
The present study mainly investigates the synthesis of calcined marl-based geopolymeric cement under different synthesis conditions including NaOH concentration, sodium silicate (SS)/sodium hydroxide (SH) mass ratios, solid (S)/liquid (L) mass ratios, ca...
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M. Torres-Carrasco, F. Puertas
Pág. Page 05 - 12
Portland cement is considered an excellence building material. This is due mainly to its high performance, its good quality/price ratio and the raw materials from which it is made can be found almost everywhere in the world. However, the development of a...
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Ana María Fernández-Jiménez, Angel Palomo, Cecilio López
Pág. Page 123 - 131
Nowadays Portland cement concrete is the most widely used building material. Its mechanical properties, the quality/price ratio, performance in general, have contributed to the success ofthis material along 20th century. However the process of fabricatio...
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Andres Salas Montoya, Loth I. Rodríguez-Barboza, Fabiola Colmenero Fonseca, Javier Cárcel-Carrasco and Lauren Y. Gómez-Zamorano
In recent decades, alkali activated and blended cements have attracted great interest worldwide due to their advantages of low energy cost, high strength, and good durability. This study evaluated the effects of replacing 50% of Portland cement with a mi...
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Catarina C. Novo, Luciano Senff, Maria P. Seabra, Rui M. Novais and João A. Labrincha
This work aims to further decrease the environmental footprint of alkali-activated materials by using an industrial wastewater to partially replace a commercial activator.
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Jhonathan Fernando Rivera, Ruby Mejia de Gutierrez, Jhoanna Mercedes Mejía, Marisol Gordillo
Pág. 31 - 39
This study focuses on the production of an alternative cementitious material with low environmental impact through the valorization of two-coal combustion by-products. Hybrid cements based on the alkali activation of fly ash, (FA) and boiler slag (BS) bl...
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Xin Ma, Lei Zheng, Zifu Li, Lingling Zhang, Shikun Cheng and Xuemei Wang
This study explored the nitrate reduction by Al-Fe alloy. The nitrate conversions of fresh, 30-day and 90-day alloys were 78.1%, 42.8% and 9.5%, respectively. Water activation promoted the reducing ability of the alloy (98% nitrate removal), which was hi...
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Ángel Palomo, Ana Fernández-Jiménez, Cecilio López-Hombrados, José Luis Lleyda
Pág. Page 75 - 80
Nowadays, the tracks that comprise the world railway network are estimated to contain nearly three billion sleepers, over 400 million of which are made of concrete. At the same time, over 50% of the world demand for sleepers (around 20 million units per ...
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Piergiorgio Tataranni and Cesare Sangiorgi
According to the latest estimates, 40% of urban areas are covered by pavements. One of the most remarkable effects on the urban environment is the increase in impermeable surfaces which leads to problems related to water infiltration into the ground and ...
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Piergiorgio Tataranni
Paving blocks are today a popular paving solution for urban surfaces. Considering the wide variety of products currently on the market, it is possible to build pavements that differ in terms of functionality, bearing capacity, skid resistance, visual imp...
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Ana Fernández-Jiménez, Angel Palomo
Pág. Page 213 - 232
In this paper are presented some of the technologic properties of cementitious material elaborated by alkali activation of aluminosilicates are presented. More specifically it is about the properties of alkali activated fly ash concrete and mortar (witho...
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Yanbing Zhao, Caiqian Yang, Kefeng Li, Jing Yang, Zhiren Wu and Chengyu Yan
The coal gangue after composite activation treatment is considered a potential low-carbon and green cementitious material, so the feasibility of employing composite-activated gangue to partially or entirely replace cement for building materials is system...
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Xu Dong, Mingdong Wang, Minyuan Song and Ning Hou
The backfilling of lime soil in ultra-deep and ultra-narrow foundation trenches is a difficult construction link, and ordinary-cemented soil has drawbacks, including poor strength, impermeability, and frost resistance. To solve these problems, fly ash (F...
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