The use of low-carbon supplementary cementitious materials (SCM), such as calcined clays, to replace cement clinker has been recognized by the Cement Industry achieve reductions in greenhouse gas emissions. This paper investigates eight low-grade with <20% kaolinite, obtained from different geological formations, that have produce potential SCMs. clays were characterised before and after calcin...

ABSTRACT Supplying sewerage systems in cities and factories has a high cost, both for design, execution, maintenance. Reinforced concrete exposed to the aggressive acids produced by wastewater microorganisms receives costly coatings avoid corrosion impairment of structural functions. Thus, this systematic review had two main goals: (1) identify supplementary cementitious materials (SCM) that im...

In this study, the workability and reaction mechanism of metakaolin (MK) based geopolymer blended with rice husk ash (RHA) silica fume (SF) was investigated. The prepared samples were subjected to tests including compressive strength fluidity tests. X-ray diffraction (XRD) Scanning electron microscope (SEM) employed explore phase composition microstructure geopolymers. molecular bonding informa...

Reinforcement spacers are a critical component of concrete structures. Their presence affects microstructure and transport properties cover though this is not widely appreciated. This paper presents the first study to determine whether negative effects can be mitigated through use supplementary cementitious materials such as silica fume, fly ash blast-furnace slag. Concrete samples (>200) with ...

Abstract Research has shown that adding supplementary cementitious materials (SCMs), such as fly ash (FA) and slag (SL), to concrete improves its mechanical durability properties up certain limits. However, the long-term performance of made with FA SL is not fully known. This study investigates impact on (up 900 days) concrete. The specimens were six replacement percentages (0, 10, 20, 30, 45 6...

Cement-based materials are widely used in the construction of civil infrastructure systems. However, normal wear-and-tear and extreme loading can result in the damage and deterioration of such important civil structures. In this study, a novel approach to the detection of cracks in fiber reinforced cementitious composites (FRCC) is proposed. The approach is based upon the electrical properties ...

The new Concrete Society Publication, Cementitious Materials, CSTR74, covers the effects of cementitious materials blast furnace slag (GGBS), fly ash (FA), limestone fines and silica fume (microsilica) on the properties of concrete. This paper focuses on the effects of silica fume on all the main properties of concrete in the fresh and hardened state as defined in the publication.