Abstract Fly ash (FA) is pozzolanic, while blast furnace slag (GGBS) latent hydraulic. These two materials react slowly in the presence of water to harden. Adding an alkali activator such as strong hydroxide could boost hardening process, but safe handling highly corrosive primary concern. Therefore, present work prescribed various types gypsum activate FA and GGBS a binder phase for making mor...

This study investigates the influences of recycled waste glass powder (RGP) on carbonation behaviour sodium carbonate activated ground granulated blast furnace slag (GGBS) mortars. The effect activator dosages, types and RGP addition resistance to are evaluated. results indicate a high dosage or water combination as always can enhance ability carbonation. Furthermore, 30% in GGBS binder system ...

da Unicamp Comunale, do GGBS e um dos organizadores da Copa, pediu para que os jogadores entrassem em campo com vontade, mas acima de tudo com respeito, pois se trata de uma competição entre amigos e colegas de trabalho. “Devemos sempre privilegiar o espírito esportivo, com lealdade e sem agressividade, pois a finalidade dessa Copa é a confraternização e, acima de tudo, passar horas agradáveis ...

The major problem the construction industry concurs with is the high maintenance cost of the concrete. Various natural processes such as weathering, faults, land subsidence, earthquake, changes in moisture and temperature, have the tendency to create cracks in concrete. Therefore, to counter these effects, it has become necessary to come up with ways which will not only help in counteracting bu...

This paper investigates on the mechanical characteristics (compressibility and shear strength) of fly ash/ground-granulated blast-furnace slag (GGBS) mixtures at various mix ratios using consolidation direct tests, respectively. The studies were done a reduced duration load increment. compressibility behaviour has been found to improve with increase in GGBS content. Direct test results showed a...

This paper describes an experimental investigation into the properties of ambient cured one-part alkali-activated materials (AAMs). Mixes incorporating waste glass (WG), ground granulated blast-furnace slag (GGBS), fly ash (FA), and sodium metasilicate pentahydrate were assessed in terms workability, water absorption, physical mechanical properties, environmental impact. Microstructure investig...

This paper provides physical and chemical performances of mass stabilised organic and inorganic contaminated site soils using a new group of MgO-bearing binders over 3 years and evaluated the time-dependent performance during the 3 years. This study took place at a contaminated site in Castleford, UK in 2011, where MgO, ground granulated blastfurnace slag (GGBS) and Portland cement (PC) were mi...

Chloride induced corrosion of steel reinforcement is the main cause of deterioration of reinforced concrete marine structures. This paper investigates the relative performance of alternative repair options with respect to the deterioration of reinforced concrete bridge elements in marine environments. Focus is placed on the initiation phase of reinforcement corrosion. A laboratory study is desc...

The available literature identifies that the addition of mineral admixture as partial replacement of cement improves the microstructure of the concrete (i.e., porosity and pore size distribution) as well as increasing the mechanical characteristics such as drying shrinkage and creep, compressive strength, tensile strength, flexural strength, and modulus of elasticity; however, no single documen...

Building activities generate coarse (PM10≤10μm), fine (PM2.5≤2.5μm) and ultrafine particles (<100nm) making it necessary to understand both the exposure levels of operatives on site and the dispersion of ultrafine particles into the surrounding environment. This study investigates the release of particulate matter, including ultrafine particles, during the mixing of fresh concrete (incorporatin...