Engineering Commons^™

Properties Of Concrete Containing Ggbf Slag And Nano-Silica, Mohammad Sajjadul Islam

UNLV Theses, Dissertations, Professional Papers, and Capstones

Ground granulated blast furnace slag (GGBFS), a by-product from steel production, has been used as a partial replacement of portland cement in concrete for over a century. It constitutes a beneficial reuse of a by-product material, less consumption of portland cement concrete. Lower consumption of portland cement concrete can help reduce construction cost. Furthermore, it lowers the industrial carbon footprint, and landfill disposal which is a major environmental issue the world is facing today. The chemical composition of GGBF slag is similar to portland cement with hydraulic properties and additional pozzolanic properties with excellent alkali silica reactivity mitigation and resistance …

Mechanical And Transport Properties Of Alkali-Activated Natural Pozzolans As Sustainable Binders, Brittany Radke

Calvert Undergraduate Research Awards

OPC production accounts for 5 to 7% of the global carbon dioxide (CO₂) emissions, contributing to global warming. The desire to reduce CO₂ emissions and produce more durable concrete has given impetus to search for new binders. It is suggested that alkali-activated natural pozzolans have the potential for use as a sustainable replacement for OPC in concrete.

The current study presented herein evaluated fresh, mechanical, and transport properties of alkali-activated natural pozzolan mortars containing various concentrations of sodium hydroxide solutions as an alkaline activator. To this aim, alkali-activated natural pozzolan mortars were made with concentrations of sodium …

Investigating The Use Of Pozzolans In Portland Cement Concrete And Inorganic Polymer Mortar, Omar Abdelmalek Saleh

UNLV Theses, Dissertations, Professional Papers, and Capstones

The use of pozzolans offers promising signs for a change in the cement industry. Pozzolan in its natural and artificial forms can be used to improve cement properties or to synthesize new cement. This study investigates the use of pozzolans in portland cement concrete and inorganic polymer mortar (geopolymer mortar).

This thesis is divided into two phases. Phase 1 investigates the use of natural pozzolan as a partial replacement of portland cement in concrete. In this phase two types of class N pozzolan are used separately to develop concrete mixtures contain different percentages of class N pozzolan. Fresh concrete properties …