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Air Pollution, Environmental Engineering

Air Quality Index in Delhi – AQI categories and Causes

Vinod Gopinath

According to the recently released IQAir AirVisual 2020 World Air Quality Report, India is home to 15 of the world’s 20 most polluted cities. Would you believe it if I say that a public emergency was declared in a city after its air quality index plunged to ‘severe plus’ levels of about 530? This happened nowhere other than New Delhi. Read on to find more about the Delhi Air Quality Index and what were the causes of this extreme level of pollution.

Air Pollution, Environmental Engineering

What are air pollutants? | Types, sources and effects of air pollutants

Vinod Gopinath

Air Pollutants Examples, Air Pollutants meaning, Effects of Air Pollution, Hazardous Air Pollutants, Major Air Pollutants, Primary Air Pollutants, Secondary Air pollutants, Sources of Air Pollutants, what air pollution is, What are air pollutants?, What are air pollution causes?, What are criteria air pollutants?, What are greenhouse gases?, What are the air pollutants?, What are the five major air pollutants?, What are the main air pollutants?, What is air pollutants?

Air Pollution, Environmental Engineering

Air pollution control measures and devices for industrial emissions

Vinod Gopinath

It’s the need of the hour to take measures for air pollution control and prevention since millions of Indians are constantly exposed to polluted air. For instance, they breathe up to 25 micrograms/cubic metre of the lethal, microscopic pollutant PM 2.5 on a 24-hour average. This is well above the World Health Organization’s (WHO) limit of 10 micrograms/cubic metre.

Architectural Finishes, Eco- friendly building materials

ALC Panel – Autoclaved lightweight Concrete Panel

Vinod Gopinath

ALC Panel or Autoclaved Lightweight Aerated Concrete panel is composite material consists of cement, lime, and silica sand. These panels use two-way welded steel mesh as reinforcement. Reinforcements are treated with anti-rust liquid. ALC panels are manufactured at high temperatures and are steam cured.

CONCRETE, quality tests on concrete

Splitting tensile strength test of concrete – Test procedure

Vinod Gopinath

The splitting tensile strength test is performed on hardened concrete to determine its tensile strength. Marginal variations in water to cement ratio, ingredient proportioning, increase in a slump, etc impacts the desired concrete strength. This in turn affects the strength and stability of structures. There are several tests to determine the strength of concrete.

Building Materials, CEMENT

Cement Testing Methods -Field and Laboratory tests

Vinod Gopinath

Cement tests are significant because cement is the most important and highly recognized binding material used in construction. Cement is an integral part of all types of construction ranging from huge skyscrapers, bridges, tunnels, etc to small residential buildings.

dams, Hydrauilics

Spillway – Types, components and features

Vinod Gopinath

A spillway is an inevitable component of any dam that helps in the emergency discharge of water. Spillways is an important topic in hydraulics. Design of dam and related information comes under the topic. In this blog, I will show you the importance of spillway and their types. We will go deeper into each of these in separate sections.

Building Materials, CEMENT

Best cement brands in India-Top cement companies 2025

Vinod Gopinath

Which are the best cement companies in India? Which is the best cement in India? This is the common question every individual should be asking while deciding to go for home construction.

Environmental Engineering, Water pollution

What are Water Pollutants? – Definition, Sources and Types

jefy jean

Water Pollutants kill more people every year than from all forms of violence including war, according to the UNDESA. Every day, 2 million tons of sewage, industrial, and agricultural waste reaches water bodies all over the world. With the growth of the human population, industrial and agricultural activities the hydrological cycle got disrupted. As a result, declining water quality has become a global issue of concern.

Environmental Engineering, Water pollution

Activated Sludge Process in Wastewater Treatment

jefy jean

Activated Sludge Process is a globally used wastewater treatment technique. In the previous blogs, I had shown you the various secondary wastewater treatment techniques. In this blog, we will dig deep into this widely used technique of activated sludge process, its configuration, process control and aeration methods.