It is strictly prohibited to entrust ready mixed concrete production enterprises to manufacture concrete specimens.
For more highlights, please click the blue word above to follow us! Recently, the Provincial Department of housing and urban rural development issued a notice to gradually implement the certification system for concrete works on the construction site for new housing buildings and municipal infrastructure projects in the province, and confirm the relevant quality responsible persons to perform their duties by taking photos on the construction site in the aspects of ready mixed concrete mobilization, specimen production, maintenance and inspection It is proposed that the proportion of pilot signboard verification projects shall not be less than 20% by September 2022, and not less than 50% by September 2023, and all projects under construction shall be subject to signboard verification by September 2024…
（4） Concrete specimen submission for inspection: focus on verifying that the whole process of concrete specimen circulation from sample preparation, curing to submission for inspection is under control.
92) on establishing a quality responsibility identification system, for key processes According to the requirements for the certification of concealed works in key parts, the certification system of concrete works on the construction site shall be gradually implemented for new housing buildings and municipal infrastructure projects in the province, the quality responsibility shall be implemented, the quality management shall be standardized, and the traceability of quality responsibility shall be realized.
4、 Verification contents of each link of signboard verification (I) pre mixed concrete mobilization and inspection link: focus on verifying the compliance of actual pouring volume, concrete design strength, design slump and actual slump, etc.
5, housing and urban rural development bureaus of districts, cities and counties (cities) directly under the province, Nanchang urban and Rural Development Bureau and Ganjiang New Area Urban and rural construction and Transportation Bureau: in order to fully and thoroughly implement the notice of the general office of the State Council Transmitting the guiding opinions of the Ministry of housing and urban rural development on improving the quality assurance system and improving the quality of construction projects (Guo ban Han [2019] No.
（4） Concrete specimen submission for inspection: when the concrete specimen is handed over to the sample receiver of the project quality inspection organization, the relevant personnel of the construction unit, the supervision unit and the inspection organization shall raise a sign for verification and take photos at the sample receiver of the project quality inspection organization.
The supervision unit shall witness the mobilization of ready mixed concrete and the preparation, curing and inspection of concrete specimens according to the relevant requirements of the supervision specifications, and truthfully fill in the sign verification conclusion.
（3） The personnel of the supervision unit participating in the sign raising verification shall be the on-site supervisors authorized by the chief supervision engineer, which shall be specified in the supervision site rules.
（3） Concrete specimen curing link: focus on verifying the setting of standard curing room or standard curing box on the construction site and the compliance of the curing conditions of standard curing room or standard curing box; Check the compliance of the curing conditions of the standard curing room or standard curing box every day.
（2） The personnel of the construction unit participating in the sign raising verification shall be the construction site quality officer or the construction site engineering and technical personnel authorized by the project leader, and shall be specified in the concrete specimen retention scheme.
Supervise and urge the responsible unit to rectify the problems found in time; Failure to implement the sign raising verification system or fraud shall be reported to the construction unit and the local project quality supervision organization in time.
（3） Curing link of concrete specimens: on the expiration date of standard curing or simultaneous curing of each batch of concrete specimens, relevant personnel of the construction unit and the supervision unit shall organize signboards to verify and take photos at the curing point.
（5） The personnel of the project quality inspection organization participating in the brand raising verification shall be the engineering technicians responsible for receiving samples, which shall be specified in the project quality inspection contract signed with the construction unit.
（1） Concrete slump measurement record account; （2） Record account of concrete specimen fabrication; （3） Concrete specimen curing records; （4） Concrete specimen inspection record; （5） Sign up to verify photos.
6、 Work requirements (I) strengthen leadership and make solid progress.
The photos of the sign raising verification shall be clear, and the sign raising verification data shall be complete, compiled into the project data archives, and handed over to the urban construction archives as required after completion.
After the fabrication of each batch of concrete specimens is completed, the relevant personnel of the construction unit and the supervision unit shall hold a sign for verification and take photos at the fabrication point.
From October this year to September 2022, the proportion of local pilot projects in construction in progress shall not be less than 20%; By September 2023, accounting for no less than 50%; By September 2024, all projects under construction will be verified by raising cards to achieve full coverage.
2、 Quality responsibility of participating units (I) the construction unit shall resolutely implement the primary responsibility for project quality, assign special personnel to be responsible for the quality supervision of concrete works, urge the construction and supervision units to implement the licensing verification system for concrete works on the construction site, and regularly or irregularly check the implementation of the licensing verification system.
The construction unit shall also collect the data submitted by the concrete production enterprise, including: opening appraisal report, concrete mix proportion notice, concrete quality certificate and concrete transportation sheet, concrete strength inspection report of this batch, and other data specified in the contract.
（2） Concrete specimen production: the standard curing specimen shall be sampled at the slump detection point of ready mixed concrete; Samples shall be taken from the concrete pouring and vibrating operation surface for the same curing test piece, and the sampling frequency of the same curing test piece shall be implemented according to the approved retention scheme of concrete test piece.
5、 The construction unit is responsible for collecting and summarizing the data to be collected for sign raising verification, which is managed according to the account for convenient query.
The competent departments of housing and urban rural development at all levels shall earnestly strengthen the organization and leadership, simultaneously promote the licensing verification system, project quality and safety manual system, project quality management standardization and other work, bring the licensing verification into the scope of daily supervision, patrol inspection and supervision, and gradually achieve full coverage and no dead corner.
Where the signboard verification is not standardized and the data are not complete, in addition to increasing the frequency of supervision and inspection, the method of supervision and sampling inspection shall be adopted to verify the compliance of the strength of relevant concrete components, so as to ensure that the quality of concrete works is always under control.
It is strictly prohibited to entrust ready mixed concrete production enterprises to carry out standard curing of concrete specimens.
Conditional cities can use QR code, chip and other information means to strengthen concrete specimen management.
The construction unit shall make preparations before the sign raising verification, make the sign raising verification information publicity board (see the annex for the sample board), timely notify relevant personnel to participate in the sign raising verification, and arrange special personnel to take photos, collect and summarize relevant data, etc.
（4） The personnel of the ready mixed concrete production enterprise participating in the certification shall be the engineering and technical personnel of the enterprise authorized by the enterprise legal person or the technical director, which shall be specified in the ready mixed concrete purchase contract.
（2） Implement responsibilities and refine measures.
The relevant work is hereby notified as follows: I.
All localities should actively organize projects under construction to participate in the certification work, promote it in stages, and implement the certification system for all new and started housing construction projects involving foundation and foundation, main structure (excluding prefabricated buildings) concrete divisional projects in the whole province in three years.
See more with the small editor ↓↓↓ notice on the implementation of signboard verification system for concrete projects on the construction site, Ganjian Zi [2021] No.
3、 Time node and place of signboard verification (I) mobilization of ready mixed concrete: after the slump test of each batch of concrete is completed, relevant personnel of the construction unit, supervision unit and concrete production enterprise shall organize signboard verification and photography at the test point.
（2） Concrete specimen preparation: focus on verifying the number of concrete specimen groups, forming methods, etc.
The competent departments of housing and urban rural development at all levels shall refine work measures, pay close attention to the implementation of annual objectives and tasks, report the implementation of the licensing verification system on a quarterly basis, and timely report the list of pilot projects of the licensing verification system in the region..
the work objective signboard verification system refers to a management method to confirm that the relevant quality responsible persons perform their duties by taking photos at the construction site in the four links of ready mixed concrete mobilization and concrete sample preparation, maintenance and inspection.
The concrete divisional works of municipal infrastructure works such as urban roads, municipal bridges and pipe galleries shall be implemented with reference.
