GBC INDIA, a Green Building Centre set up in Ahmedabad, Gujarat with the objective of empowering environment by bringing sustainable technologies to the colossal building and construction industry.
GBC INDIA always strives to modernise its indigenous traditional methods by developing, innovating and manufacturing resulting a product / material to a world class quality.
GBC INDIA in 2005 was the 1st in India to develop a spearheading green technology using agro waste that can be used for roof / over deck insulations, renowned as INSULITTE – rice husk ash based roof insulation.
Recent developments from GBC INDIA are: nodullär: Light clay aggregates used for roof/heat insulation flokön: An insulating additive for wall plasters Purosil: Siliceous earth based soil conditioners / amendment for horticulture
GBC INDIA is also the largest importer of LECA (light expanded clay aggregates).
Major benefits are:• Light weight material • Reduces heat transmission through slab and increases building comforts • Eco-friendly / green building material / products • Hassle-free application (DIY – Do It Yourself).
LECA-light expanded clay aggregates LECA are formed by baking volcanic clay in a rotary kiln at 1,200 C. This expands the clay into aerated modules with a tough outer shell. The resulting aggregate is inert, light, non-combustible, rot proof and strong.
LECA are round in shape with coarse and course texture. Its exterior colour is brown and black with a spongy cellular structure inside. In addition, each of the LECA balls acts to form geometric barrier which helps displace and irratiate heat over a larger surface area the air entrapped in LECA. The cellular structure of lightweight aggregates reduces the rate of heat and transfer compared with dense, natural aggregates.
 For this reason, the enhanced properties of LECA — such as thermal, acoustic, sound, compressive strength, low weight etc. — have been used widely to improve performance in buildings and structures. Additionally, LECA pellets are pH neutral and porous, and have the ability to store water. The gaps between the pellets provide good aeration for root systems. Being lighter than normal aggregates, clay granules are easier to transport and handle and frequently used by sports and recreation contractors for drainage and back filling to concrete structures.
LECA are used as a substrate in hydro culture /hydroponics and blended with other growing media to improve drainage insulate roots from frost. They can also be spread as a top dressing (mulch) around plants to retain moisture and help prevent weed growth.
LECA majorly used for precast, masonry block, loose aggregate for backfill, water treatment facilities use for filtration and purification materials for municipal wastewater and drinking water, and many more
nodullär: light clay aggregatesnodullär is a special type of sedimentary clay that has been pelletised and processed, resulting in light, porous aerated modules with a tough outer shell aggregates, used for roof and heat insulation. nodullär aggregates are round with coarse and course texture. Its exterior colour is off white/ivory with a cellular structure inside.
nodullar-A, lightweight concrete using granulated aggregate, is an interesting economic, and sustainable benefit may result by using it as a building material. Therefore, it can be an alternative sustainable lightweight aggregate solution in comparison to the most currently applied ones, such as expanded clay, brick bats, particles of cork, and particles of expanded polystyrene (EPS), among others. The density, the compressive strength and the thermal insulation properties of nodullar concrete were experimentally quantified.
There are several major disadvantages of brickbats and integral type waterproofing for overdeck applications. These are• Imposes unnecessary load on the building• Cracks reappeared due to temperature variations• Damage mother slab on repair• Bricks act as a water reservoir• Lack of manpower (expert masons)• Non-availability of quality bricks• Brickbats not for waterproofing, but for heat proofing.
flokön: light clay flakesflokön are processed lightweight flakes and made from natural deposited clay. This building material offers excellent results in both quality and performance in a variety of engineering and horticultural projects as a soil amendment or conditioner. flokön is produced with processes with strictly controlled standards to ensure a uniform, high quality product that is structurally efficient, durable and inert, but also lightweight and insulative. Light clay flakes allow designers greater flexibility in creating solutions to meet the challenges of dead load, terrain, seismic conditions, construction schedules and budgets in today’s marketplace.
Advantages of LECA, nodullär and flokon• Lightness• Thermal insulation due to a low conductivity coefficient• Soundproofing with a high acoustical resistance• Moisture impermeability• Enhanced geometric advantage • Durability• Fire resistance• A pH of nearly 7• Resistance to freezing and melting• Reduction of construction dead loads and earthquake lateral loads• Serves as an ideal growth medium for plants• Providing drainage and filtration.
LECA/nodullar is a natural product, containing no harmful substances. It is inert with a neutral pH value, resistant to frost and chemicals, and has excellent sound and thermal insulation properties. It is also non-biodegradable and non-combustible.

Contact:Sandeep Vidwans,GBC INDIA,A/408, Neelkanth Palace, Satelitte,Ahmedabad – 380015, Tele: +91-9825070625, 8866117051, +91-79-26930619