Natural, modified and saturated zeolites as additives in Portland cement

The results show that cement with the addition of various zeolites (natural zeolite, zeolite modified with Fe(III) ions and zeolite saturated with Pb ions) applies as a supplementary cementitious material. The obtained results indicate that natural zeolites, Fe(III)-modified zeolites and zeolites from aqueous Pb ion extraction can be used as additives in cement.

1 Introduction

The contemporary cement industry has faced the challenge of producing more sustainable, less energy consuming and more durable products without reducing the mechanical properties of the final product. One of the most widespread developments in the conventional production process is the blending of supplementary cementitious materials or pozzolans with ordinary Portland cement [1].The replacement of a specific amount of cement clinker with pozzolans results in a proportional decrease in the economic and environmental cost of the end product. Moreover, the use of pozzolans in...

Related articles:

Issue 6/2019 UNIVERSITY OF APPLIED SCIENCES BONN-RHEIN-SIEG

Investigations into the influence of chemical activators and templates on cement hydration

1 Introduction The most successful ways of reducing the emission of CO2 during the production of cement are currently based on the use of cement replacement materials and their activation. The...

more
Issue 4/2021 NATIONAL COUNCIL FOR CEMENT AND BUILDING MATERIALS (NCB)

A review of tertiary cementitious systems: Limestone and fly-ash-based composite cements

1 Introduction The construction industry is one of the largest sources of GHG emissions. Around the world, more concrete is used than any other material. About 10 billion t of concrete are laid each...

more
Issue 12/2019 NATIONAL COUNCIL FOR CEMENT AND BUILDING MATERIALS

Investigations into the mechanical properties of Portland slag cement based on GBFS and steel slag

1 Introduction Formulations of blended cements based on natural or synthetic inorganic minerals are associated with the conservation of resources, energy and cement along with lowering the clinker...

more
Issue 11/2015 HOLCIM

About the sulfate resistance of slag composites

1 Background When sulfates in dissolved form, such as sodium, potassium, magnesium or calcium sulfates from soil or groundwater, enter hardened concrete, they react with the hydrated cement paste....

more
Issue 6/2021 NATIONAL COUNCIL FOR CEMENT AND BUILDING MATERIALS (NCCBM)

Investigations into calcined clay cements containing limestone as compared with calcined clay cements containing marble dust

1 Introduction Worldwide cement demand is increasing continuously due to the increasing population and infrastructural requirements. The annual global cement production is predicted to reach around...

more