Concrete is a complex material of construction that enables the high compressive strength of natural stone to be used in any configuration. This is accomplished by breaking natural stone to suitable sizes and mixing the aggregates so formed with suitable proportions of water and cement. This mixture can then be moulded into any required shape while still fluid. The water and cement react chemic...

The present study concerns a development of calcium aluminate cement (CAC) concrete to enhance the durability against an externally chemically aggressive environment, in particular, chloride-induced corrosion. To evaluate the inhibition effect and concrete properties, CAC was partially mixed with ordinary Portland cement (OPC), ranging from 5% to 15%, as a binder. As a result, it was found that...

In this study, 10–50% of porcelain tile polishing residue (PPR) was used as an additive or partial replacement cement in concrete. The consumption kept constant by correcting the amount sand for each mixture. Concrete workability (slump) reduced up to 88.72% when PPR replaced 30%, while it only 4.10% added concrete at same levels. Compressive strength 28 days increased 92.22% with 50% additive,...

Based on appropriate assessment methods and indexes of self-compacting concrete proposed, properties of concrete made with river-sand and machine-made sand was firstly compared in different mix proportions. The techniques such as basic parameters optimization of mix proportion, admixture composition, large-volume mineral admixtures addition for preparing machine-made sand self-compacting concre...

Concrete is a construction material made from mixture of Portland cement, air, coarse aggregate, fine and sometimes also uses admixture materials with certain ratio. Cement, which the binding agent in concrete mixture, contributes to 8% world's carbon dioxide (CO2) emissions. Fly ash steel slag are one wastes that currently being researched developed as cement ingredients mixtures. This because...

A new kind of retarding polycarboxylate superplasticizer (M20S80) was prepared through the modification of black liquor and polycarboxylate superplasticizer (S) through an Fe-H2O2 reaction system. The synthesis process of M20S80 was introduced. Infrared spectrum analysis (FT-IR) was used to investigate the changes in functional groups in M20S80. At the same time, a mixture of LM20S80 was made b...

Introduction Safety and mobility are key concerns for State Highway Agencies (SHAs), especially during the winter season when ice and snow accumulation on roads and bridges can create hazardous or impassable driving conditions. Various chemicals, including magnesium, sodium, and calcium chloride, calcium magnesium acetate and urea, are used by SHAs as anti-icing and deicing solutions on transpo...