【摘 要】
:
This study, a first contribution to research into low cost alternative cements explores the use ot various tractions of industrial by-products such as fly ash deposited in landfills.This new cement ha
【机 构】
:
Cements and Recycling Materials Department, Eduardo Torroja Institute for Construction Science (IETc
【出 处】
:
The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
This study, a first contribution to research into low cost alternative cements explores the use ot various tractions of industrial by-products such as fly ash deposited in landfills.This new cement has less carbon footprint than the conventional material (OPC).A landfill located in Aliaga in the Spanish province of Teruel, used by a nearby coal-fired power plant, was characterised to study the possible pozzolanicity of the ash and slag deposited there, with particle sizes ranging from >10 mm to 0.032 microns.A laboratory scale plant was specifically designed to separate the materials into four particle size intervals (A, B, C and D) for the study.
其他文献
Cement pastes incorporated with 0%, 15%, 25% and 35% of fly ash by weight were prepared.Alter 90d ot curing, the cement pastes were crushed and ground into powders with a particle size less than 0.080
In this paper, the accelerated method was conducted to investigate the ASR reactivity of two cherts (Yoro and Seto) which were used as aggregate materials for concrete mixing.The reaction was stopped
The formation and transformation characteristics of ettringite played an extremely important effect on the accelerated hardening and expabsion of concrete as well as its long term durability.The stabi
The alkali-silica reaction (ASR), leading to serious structural degradation, is the chemical reaction between reactive silica presenting in aggregates and hydroxyl ions from cement paste or pore solut
The need to limit the environmental impact of cementitious materials and to dispose of by-products such as fly ash and slag leads to the increasing use of supplementary cementitious materials (SCMs).I
Water confined within the nano-to microscale pores of cementitious materials plays a crucial role in damage processes affecting the sustainability of cement pastes, especially for the binding material
Over the last two decades, there has been an increased focus on the stability of the cement sheath under the influence of shear stresses imposed during the lifetime of the well.Shear stresses can occu
The influence of a new type of antifreeze-reinforced material (AFRM) on Vc value, strength, freeze-thaw resistance, water absorptivity and void parameters of roller compacted concrete (RCC) were inves
Owing to environmental and commercial pressures the constitution of Portland cement formulations is changing towards having higher aluminosilicate contents.Mainly these changes are achieved by adding
Recycled concrete aggregates (RCA) are mainly composed of an intimate mix between natural aggregates and cement paste and the complete separation between these two phases is difficult.Cement paste gen