Lok Sabha Question No. 4464 (UNSTARRED), answered on 2022-03-30
Subject: Low Carbon Bricks
Ministry: SCIENCE AND TECHNOLOGY
Asked by: Vinayak Bhaurao Raut, Satyadev Pachauri, Kirit Premjibhai Solanki, Arvind Ganpat Sawant

## MINISTRY OF SCIENCE AND TECHNOLOGY DEPARTMENT OF SCIENCE AND TECHNOLOGY

## GOVERNMENT OF INDIA LOK SABHA

## UNSTARRED QUESTION No. 4464

TO BE ANSWERED ON 30.03.2022

## LOW CARBON BRICKS

4464.   SHRI VINAYAK RAUT:

SHRI SATYADEV PACHAURI:

DR. (PROF.) KIRIT PREMJIBHAI SOLANKI:

SHRI ARVIND GANPAT SAWANT:

ͪव£ान और Ĥौɮयोͬगकȧ मंğी

Will the Minister of SCIENCE AND TECHNOLOGY be pleased to state:

- (a) whether it is a fact that construction industry produces 70-100 million tons of construction and demolition (C&D) waste every year;
- if so, whether the Government considers developing a technology for producing energy efficient wall material and low carbon bricks using the C&D
- (b) waste to promote sustainability;
- (c)
- if so, the details thereof;
- (d) whether the Government considers resolving the problem associated with disposal of C&D waste; and
- (e)
- if so, the details of the action taken thereof?

## ANSWER

MINISTER OF STATE (INDEPENDENT CHARGE) OF THE MINISTRY OF SCIENCE AND TECHNOLOGY & EARTH SCIENCES (DR. JITENDRA SINGH)

ͪव£ान और Ĥौɮयोͬगकȧ तथा पृ Øवी ͪव£ान मंğालय क े राÏय मंğी ( èवतंğ Ĥभार) ( डॉ. िजतɅġ ͧसंह )

- (a)  Yes  Sir.  The  construction  industry  produces  70-100  million  tons  of construction and demolition waste every year.
- (b) & (c) Yes Sir. Department of Science & Technology (DST) through Clean Energy Research Initiative has supported a project for Research & Development (R&D) in developing a technology to produce 'energy-efficient walling materials and low carbon  bricks using the Construction  and Demolition (C&D) waste'. These are called Low-Carbon bricks, do not require

high  temperature  firing  and  avoid  use  of  high  energy  materials  such  as Portland cement. DST  through  Waste  Management  Technologies  (WMT)  program  is  also developing  a  technology  to  recycle  C&D  waste  into  an  energy  efficient reinforced soil walls. Council  of  Scientific  and  Industrial  Research-Central  Building  Research Institute  (CSIR-CBRI)  is  engaged  in  the  cutting  edge  R&D  for  utilization  of construction and demolition (C&D) waste. CSIR-CBRI has been working on C&D  waste  with  prime  focus  on  recycled  aggregates  to  develop  various type/grades  of  concrete,  bricks,  blocks  and  tiles  etc.  Various  building products such as bricks, paver blocks etc. have also been developed using C&D waste. (d) & (e) Yes Sir. It will reduce the quantity of C&D waste going to landfills. A start-up company (Verdant Building Alternatives) with technical assistance from  IISc,  has  been  registered  to  produce  and  market  low-C  bricks  in Karnataka. However, bricks made up from construction and demolition waste could be utilized for construction of new buildings as per Energy Conservation Building Code requirement. Such bricks need to adhere technical parameters as per the code. CSIR-CBRI technology of 'Process/ know how 'Development of value added building  components  like  paving  blocks,  bricks  and  tiles  using  recycled aggregates' has been transferred to an industry for commercialization.

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