Production of self-compacting concrete using limestone powder

Although there are visible signs of its gradual acceptance in North Africa through its limited use in construction, Libya has yet to explore the feasibility and applicability of self-compacting concrete (SCC) in new construction. The current study revolves around SCC made of locally available materials and the harsh environmental conditions. This paper deals with the investigation into the effect of the water to powder ratio and limestone powder (LSP) on the fresh and hardened properties of SCC.

Self-compacting concrete (SCC) is a type of concrete that is produced without compaction effort in the formwork. It settles by its own weight without any bleeding and segregation and behaves cohesively enough [1]. The use of SCC is believed to provide various advantages such as reduced construction time, labour costs and noise pollution as well as the easy filling of congested and thin sections. SCC is a desirable achievement in the construction industry for overcoming the problems associated with cast-in-situ concrete. Also it can be pumped over longer distances due to its high fluidity and...

Related articles:

Issue 2019-02 Resource efficiency

Green concretes with limestone powder

On a global scale, concrete and cement production accounts for more than 6?% of anthropogenic CO2 emissions. Substitution of the cement clinker (K) contained in the cement or concrete by appropriate...

Issue 2015-12

Conversion factors for the compressive strength of Self Compacting Concrete (SCC)

In practice, different standards can be applied for determining the compressive testing of concrete e.g. EN 12390-3, ASTM C39 and AASHTO T 22. Combined, these standards allow the testing of a wide...

Issue 2015-02 Production, curing, environmental impact

State-of-the-art concretes containing cements with a reduced clinker ratio

Concrete is the most widespread construction material of our times – about 12 billion m3 of concrete are produced worldwide each year. The manufacture of cement, as one of the raw materials of...

Issue 2016-03

Two-stage concrete: effect of silica fume and superplasticizers on strength

1. Introduction Placing concrete in areas that are difficult to reach, such as concrete repairs or underwater applications, is one of the most challenging tasks for construction engineering due to the...

Issue 2019-02 Cements of the future

Which materials can we use?

Resource efficiency and climate protection will continue to challenge the method of concrete construction. However, there is no silver bullet in sight. New approaches such as the carbon dioxide...