Research On Blockchain Applications In Construction Quality Management

With the proposal of “Built by China”,construction quality management has been paid more and more attention by scholars.However,there are some problems in construction practice,such as poor authenticity of quality information record and low degree of automation of compliance examination,hindering the improvement of quality management.Blockchain,with decentralized,tamper-proof,clear source and traceable characteristics,is referred to distributed ledger technology which has the potential to address the problems in construction practice and promote a paradigm shift in the construction industry towards efficiency,transparency,and accountability change.Therefore,this paper explores the application of blockchain technology in construction quality management.The main research work includes:Frist of all,this paper introduces the the definition and types of blockchain,its key technologies and development platforms,and reviews the related theories and information technology as well as its limitations in the construction quality management.Currently,there are some problems in construction quality management,such as low information security,poor transparency and traceability,lack of quality accountability.Based on the blockchain theory,the potential benefits of blockchain technology are analyzed in the construction quality management.Secondly,the path for selecting the approitate blockchain type is built in this paper,and based on the selection path,we pointed that the consortium blockchain is suitable in construction quality management.Based on Hyperledger Fabric,a consortium blockchain network for construction quality information management is designed which includes the paricipants and these corresponding information rights.Then,a consortium blockchainbased framework is proposed,and taking inspection batch as unit,the ‘OP’ model of construction quality information is designed in the consortium blockchain.Additionally,the information storage process is introduced based on the consensus mechanism,and then,the quality acceptance process of the inspection batch was analyzed in the consortium blockchain.An example of a quality consortium blockchain is visualized based on Hyperledger Explorer.Finally,the advantages of construction quality compliance checking based on smart contracts are analyzed in this paper.Considering the development of smart contracts is A knowledge-intensive,a framework aiming to facilitate the creation of smart contracts is proposed based on ontology and and SWRL(Semantic Web Rule Language)techniques.Then,taking the “bored pile” as an example,this paper presents the process of automated quality compliance checking based on smart contracts and shows the corresponding smart contract codes.Research shows that blockchain technology can ensure the authenticity and transparency of construction quality information,and improve the degree of automation of quality acceptance.Therefore,blockchain has the transformative power to changes construction quality management.The research result is of great significance to improve construction quality management and explore the application of blockchain in the construction industry.