A handful of biochemical processes occur in aquatic environments. One of the problems that are mostly encountered in such environments is caused by excess nutrient input and subsequent algal bloom. A series of studies were ...

The use of mineral admixtures as substitute of cement in concrete is widely extended for various reasons. The reduction of doses of cement in the concrete mixtures reduces the material costs, decreases the pollution and ...

A landfill is an engineered facility for the disposal of wastes. It is designed and operated to minimize public health and environmental impacts. However, land availability is the limiting factor for the operation and ...

This document presents the methodology to evaluate cost effectiveness of energy efficiency measures for Puerto Rico, using to the cost effectiveness tests suggested in the document National Action Plan for Energy Efficiency ...

Management and development of groundwater resources introduces the challenge of collecting necessary information to understand the system. The information must integrate the aquifer system characteristics and the limitations ...

The durability of concrete is influenced by its porous network. The use of fly ash in concrete mixtures produces additional hydration products, changing its micro-structure. As a concrete admixture, fly ash not only improves ...

An existing steel truss bridge located in Missouri was selected to determine the critical connections based on the loads criteria established in the Manual for Bridge Evaluation. The selected connections were typically ...

Many bridges that represent an important part of our nation’s infrastructure system are constructed from steel components including steel plates, beams, columns, and cables of different configurations. Because of their ...

The use of Context Sensitive Solutions (CSS) for the project development process is to take in consideration the needs and concerns of different stakeholders in various areas, such as: community, environmental, aesthetic, ...

This research aims to develop and test a Point-of-Entry Cistern Purification Unit (POE-CPU) to guarantee water quality for household purposes, with an emphasis on turbidity, E. coli removal and minimal occurrence of ...