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Apply Zero Waste, Green Aggregate Production GRP

Bisnis | Thursday, 08 Sep 2022, 14:38 WIB

The largest private steel company in Indonesia, PT Gunung Raja Paksi Tbk (GGRP) has succeeded in processing factory waste which has always been a very difficult obstacle to avoid from production processes that are not environmentally friendly into other more useful products, including green aggregate, which has economic value. tall. This processing is in an effort to apply the concept of a circular economy, zero waste and a green environment.

President Director of GGRP Abednedju Giovano Warani Sangkaeng said, GGRP utilizes the remaining steel slag production to be used as green aggregate. This green aggregate innovation is part of a zero waste philosophy that encourages people to be wise in maximizing resources, so that products can be reused.

"This will form a circular economy, an environmentally friendly system that maintains the value of materials so that they can be used again and again," said Sangkaeng in a press release, Friday (26/8).

This step is the beginning of PT Gunung Raja Paksi Tbk to implement ESG (Environment, Social and Governance). In order to increase the efficiency of the company.

In producing green aggregate, steel slag is first separated and then crushed into smaller sizes. This material contains several oxides such as CaO, MgO, FeO, MnO and SiO which are beneficial for other industries and the environment.

“We produce five types of green aggregate based on size. Sand type measuring 0-4 mm, Screening Type 4-8 mm and 8-12 mm, and Split Type measuring 12-20 and 20-50 mm, "explained Sangkaeng.

The division of the various size categories, he explained, to suit the user's industry. For example, a suitable product for the brick and paving block industry is the Sand Type. Meanwhile, the ready mix concrete industry and road base PU contractors can use sand, screening, and split types.

According to the man who is familiarly called Argo, applications for the use of green aggregate have been developed in many developed countries. In addition to the construction sector, green aggregate can also be used in other fields such as agriculture. Silica in green aggregate is very good as a fertilizer medium to increase plant growth and disease resistance.

In addition, green aggregate is also porous, and alkaline so it is effective in neutralizing soil acidity

As for road construction, green aggregate is hard, wear-resistant, adhesive, and abrasive. Thus, its quality is unquestionable as a road construction. So, said Argo, the use of green aggregate can be one of the right solutions so that development can continue without harming the environment and without reducing the quality of the concrete.