Recently, several owners of a community in Haihua Island, Danzhou City, Hainan Province reported that they found that there were problems such as column cracking, cement falling off, and serious corrosion of steel bars in the basement of commercial housing that had just been delivered for four years. They suspected that the contractor used sea sand in violation of regulations to build houses, and the owners were worried about the potential safety hazards.
On the 9th, upstream news (material reporting mailbox baoliaosy@163.com ）The reporter learned from the local housing and construction department that they attach great importance to this matter and are currently discussing solutions with the parties involved in the construction and the owner. On the same day, a relevant expert group has been organized to check the on-site situation.
Owner: I found the situation at the end of last year, and I was very nervous every day
According to public data, the Haihua Island project invested by Evergrande Children World Group (formerly Haihua Island Industry Group) is located in Binhai New Area, Baimajing Town, Danzhou City, Hainan Province, and consists of three independent offshore islands. The plan of the project is three flowers in full bloom in the sea, so it is named "Haihua Island". Among them, Island 1 is a large international comprehensive tourism service area, and Island 2 and Island 3 are mainly residential areas.
Mr. Yu, who works in Shenzhen, told the upstream news reporter that the Kapok Garden is located on Island 3. At present, there are 19 30-38 storey tall buildings, more than a dozen of which have been delivered in 2020, and several of which are currently in a state of shutdown. Mr. Yu spent 980000 yuan to buy a 92 square meter hardbound house in Building 428. "Most of the people here are middle-aged and elderly people from all over the country who come to Hainan to spend the winter. It is estimated that the occupancy rate in winter is 20 to 30 percent. There are about 10000 owners in more than 3000 households, and fewer people in summer."
The upstream news reporter learned from many owners that the Kapok Garden had a hot opening because of its good environment, and it could only win a suite by drawing lots.
Kapok Garden Community, Haihua Island, Danzhou. Photograph provided by respondents
"I wanted to buy a house in Hainan to enjoy my old age, but now I live in fear every day." Ms. Wang was one of the first Kapok Garden owners to find the cracks in the basement columns. She told the upstream news reporter that in December 2023, she and several owners strolled to the underground garage and found that some columns were seriously damaged and cracked, "The scene can be said to be shocking. Building 421 only built the basement because of the shutdown. Many bearing columns there have cracks of varying degrees and signs of wall falling off. Due to serious falling off, many of the steel bars inside the columns are exposed and accompanied by signs of rust."
"In addition, we also found that the ceiling was peeling, some walls were bulging, the ground was leaking, the floor was broken, and the vents were rusted." Ms. Wang said: "Although these problems are more common in the underground of the buildings that have stopped working, most of the underground garages in the community are accessible, so when problems occur in one place, the sense of security of other buildings is also lost."
The exterior wall of the load-bearing column of the underground garage in Kapok Garden peeled off, and the steel bars were rusted. Photograph provided by respondents
Ms. Wang said that they immediately found the property report, but the property only did some simple handling work, and the owners could only complain to the local authorities through 12345, the political platform and other channels.
Ms. Wang and Mr. Yu also said that on the flat and compacted ground along the inner side of the inland sea plank road of Island 3, people were savagely digging for soil, causing more than a dozen huge pits, which may lead to waterlogging, landslide, tower displacement, and increased subsidence, seriously threatening the living safety of residents in Mumianyuan Community.
Test report: cement chloride ion content exceeds the standard by nearly 5 times
On May 9, the upstream journalist called the property owner of No.3 Island Community of Haihua Island. The staff said that the butler of the building would respond to the specific situation and could also provide relevant response documents. The upstream reporter asked Mr. Mai, the housekeeper of Building 428, but no response was received as of press release.
Ms. Wang introduced that the Danzhou Municipal Government has coordinated the relevant departments of housing construction to inspect the kapok garden plot warehouse for three times. On March 4, relevant leaders and technicians from Danzhou Housing and Urban Rural Development Bureau also visited the site and found that the ventilation system of the basement had never been opened and rusted, and the fire control system had not yet passed the acceptance.
"On March 18, in the absence of quality inspection report, maintenance plan and construction supervision, the property management company sent a mason to spray anti rust paint on the load-bearing column. Later, it was found that a mason secretly pasted cement, which was reported to the police."
Mr. Yu said that at the end of March, under the coordination of relevant departments in Danzhou City, several testing institutions in Haikou were invited to conduct core testing on some load-bearing walls and columns
The test report provided by Mr. Yu shows that of the 11 concrete compressive strength test pieces, 9 are unqualified (the other two pieces are crushed but not inspected); There are 4 chloride ion content test samples, 2 of which are qualified and 2 of which are unqualified. The percentage of chloride ion content in the cement quality is 1.488%, while the upper limit of the national standard value is 0.3% (General Code for Concrete Structures GB 55008-2021).
Test report of relevant testing agency. Photograph provided by respondents
Mr. Yu said: "Some of the owners retired from the construction industry and design units, and they suspected that sea sand was used in the construction process. (The related buildings) are sea sand buildings. But because it is not a comprehensive test, but a sampling test, everyone is still suspicious."
Upstream journalists found the response of Danzhou Housing and Urban Rural Development Bureau on March 28 on the local message board of People's Daily Online, saying that the government staff of Paipu Town had ordered the construction unit to stop the soil borrowing immediately on the spot for illegal soil borrowing.
"In view of the problems reported by the masses, such as column cracking, cement falling off, exposed steel bars, and serious corrosion in the underground garage of buildings 421 and 420 in Kapok Garden, through on-site verification, it is found that some frame columns, shear wall steel bars are corroded, and the protective layer falls off. The Municipal Bureau of Housing and Urban Rural Development has issued the Notification of Hidden Quality and Safety Hazards of Housing Construction Projects to the participating units in view of the quality problems existing on the site, and ordered the construction unit to organize relevant responsible units to comprehensively rectify the existing problems as soon as possible. At present, the rectification has entered the review stage of each unit of the "special rectification scheme", and it is expected that all rectification contents can be completed in May. "
Local housing construction department: attaches great importance and is discussing the scheme
On April 28, Danzhou Bureau of Housing and Urban Rural Development replied again through the message board: "On March 27, the deputy director of the Bureau of Housing and Urban Rural Development organized the construction, design, supervision, construction unit and the owner's representative to the Mumianyuan Community on Island 3 to coordinate the quality rectification, ordered the construction unit to organize the relevant responsible units to comprehensively rectify the existing problems as soon as possible, and agreed on the time node for maintenance and rectification. At present, a third party testing organization is being selected for rectification, so as to carry out testing and sampling work as soon as possible, and then carry out follow-up rectification work according to the testing results. It is expected that all rectification can be completed in July. "
In response to the response of Danzhou Housing and Urban Rural Development Bureau, Ms. Wang and Mr. Yu reported to the upstream journalists that the relatively serious ones were Building 412 and Building 428. Mr. Yu said that some neighbors in Building 428, where he lives, had left the community because of security concerns.
The exterior wall of the load-bearing column of the underground garage in Kapok Garden peeled off, and the steel bars were rusted. Photograph provided by respondents
On May 9, the upstream journalist called the Construction Supervision Section of Danzhou Housing and Urban Rural Development Bureau, and the relevant staff said that experts had been invited to the kapok garden for investigation and testing. "The Bureau attaches great importance to this matter, and is also discussing solutions with all parties involved in the construction, as well as the masses, which is currently being promoted."
The staff did not give a clear response to the owner's question that the building in Kapok Garden was a "sea sand building" with major hidden dangers and the subsequent rectification measures, but said that "this is what we have at present."
On the 9th, Mr. Yu sent the upstream journalists a "Quick News on the Handling of Quality Problems in the Mumianyuan Community Storeroom of Haihua Island No.3 Island" issued by the owner group, which said: "On May 8, 2024, the leaders of Hainan Construction Engineering Quality and Safety Supervision Administration led a delegation to investigate online public opinion issues in the Mumianyuan Community Storeroom of Phase III Project of Haihua Island No.3 Island. The next day, Danzhou Housing and Urban Rural Development Bureau organized an expert group to inspect the current situation of quality problems on the spot. According to the requirements and suggestions of provincial bureau leaders and expert groups, our bureau plans to entrust a third-party testing company to check whether the underground garage concrete uses sea sand and structural safety problems, and to carry out the detection of chloride ion content of concrete, concrete strength grade, and corrosion degree of reinforcement for vertical stressed components (walls and columns) in the severely damaged area according to the current specifications, It provides a scientific basis for the next step of formulating the treatment plan. The latest news will be announced in the group. "
Ms. Wang said that she hoped that the expert team would make a scientific and professional judgment through a comprehensive assessment and that the relevant departments and units would solve the major potential safety hazards in the kapok garden as soon as possible.
What harm will sea sand do to reinforced concrete?
Sea sand refers to the sand eroded by sea water and not subject to desalination treatment, mostly from the junction of sea water and rivers. If the building uses sea sand, what will be the impact?
An insider engaged in real estate construction engineering told the upstream news reporter that compared with natural river sand, sea sand is cheap. Because concrete is made of sand and other materials, some concrete mixing stations will use other materials with low chloride ion content to mix the sea sand without desalination, thereby reducing the cost of sand purchase.
An expert from the Key Laboratory of Durability of Coastal Civil Engineering in Guangdong Province told the upstream news reporter that concrete basically includes coarse aggregate (gravel), fine aggregate (sand), as well as cement and water. The state has restrictions on the chloride ion content of four materials, and the chloride ion standard of sand is only one of them. "In fact, what is more important is the total chloride ion content of the final mixed concrete, which is the most important."
"If the sea sand with excessive chloride ion is mixed into the concrete, it will promote the corrosion of the reinforcement, thus reducing the service life of the building. The concrete containing chloride ion plays an uninterrupted chemical role on the reinforcement, directly damaging the protective film of the reinforcement, thus eroding the internal structure of the reinforcement. Once the steel bar continues to rust, the original supporting force will be reduced. In addition, the chloride ion will cause the concrete to expand, and the concrete will start to crack from the inside. " The expert said.
According to Xinhua News Agency, in 2011, buildings such as Shenzhen Shatoujiao Bihai Resort became dangerous buildings after only 20 years of construction due to the use of sea sand. In 2013 and 2018, the media exposed the illegal use of sea sand in Ludan Village, Shenzhen, and Putian, Fujian Province.
Subsequently, the national and local governments successively issued relevant documents. In May 2013, the Ministry of Housing and Urban Rural Development issued the Notice on Strengthening the Quality Management of Ready Mixed Concrete to prevent the use of unqualified sea sand ready mixed concrete and strengthen the supervision of construction sand; In the same year, the Department of Housing and Urban Rural Development of Guangdong Province issued the Notice on Strengthening the Management of Construction Sand to Prevent the Illegal Use of Sea Sand in Projects.
On April 4, 2018, Fujian Provincial Department of Housing and Urban Rural Development issued the Emergency Notice on Serious Investigation and Treatment of Illegal Use of Sea Sand. In 2018, Haikou also issued the Implementation Plan of Haikou Municipal Oceanic and Fishery Bureau for Special Law Enforcement Action against Illegal Sea Sand Mining to regulate sea sand mining from the source and protect the marine environment.
Extended Reading
The man spent 5.6 million yuan to buy a new house, and the remains in the house were also arranged as a "mourning hall"
Buying a house was originally a great joy in life, but for Ah Jian's family in Fuqing, it became an unspeakable nightmare: A new house that cost 5.6 million yuan was left with a body , which left a huge psychological shadow on the whole family.
01 The new house is maliciously disturbed
Xiaoliang's house is located in a new building in Gaoshan Town, which consists of villas, shops along the street and underground parking garage. However, on the evening of April 3 this year, Xiao Liang's family suddenly found that a stranger's body was parked in the shop, and a simple mourning hall was also set up on the scene.
There is a stranger's body in the shop, and there is a simple mourning hall at the scene
The third day after the incident, with the intervention of Gaoshan Town government staff, the body had been sent to the funeral home for placement, but this event still made Ajian's family afraid and could not accept this fact.
Ah Jian's wife said she had no grievances or enmities with the deceased's wife
02 Ali: Disputes with developers
According to the mediation team, it was Ali, the wife of the deceased, who placed the body. She admitted that she did not know Ajian's family and that her family was on a slope less than three meters away from the shop. Ali stressed that the developer occupied her home during the construction process.
Ali said this was to protect her own things
03 Ali: I don't know whether the real estate has been sold or not. There are problems in the questioning procedures
The mediator, Pang Jie, believes that Ali's approach is not advisable. But Ali said that she did not know that the house had been sold, because there was a dispute between them and the developer, and the property right of the store could not be handled. However, Xiao Liang said that when he bought the house, the developers said that the house was OK, and they also handled the real estate certificate.
Xiao Liang said he knew of a nail house
Xiao Liang believes that since it is the dispute between the developer and Ali, he hopes to buy the store from Ali. But Ali refused to accept the proposal. She thought that the house Xiaoliang bought occupied the land of her family, and she was unwilling to spend money to buy it.
04 Developer: not infringing the legal rights and interests of Ali
Mr. Li, the representative of the community developer, told the mediation team that the original land was approved by the Land and Resources Bureau, and the development and construction projects were within the red line planning scope, and did not occupy the land of Ali's family; Previously, the Alis' compensation requirements were too high, so they were not requisitioned.
The developer said that Ali would not accept 6.5 million yuan of compensation
05 The mediation team analyzes the responsibilities of all parties
In order to promote the solution of the problem, the mediation team helps all parties to analyze their responsibilities. First of all, as the person who parked the remains, Ali should bear the main responsibility and compensate for Ah Jian's spiritual loss; Secondly, the developer should bear part of the responsibility for this incident.
Lawyer Luo Wei
The developer failed to abide by the principle of honesty and trustworthiness, and failed to truthfully disclose the fact that A-Jian had a dispute with A-Li in a timely manner to the consumer, which infringed A-Jian's right to know and the right to choose, so it had to bear the secondary responsibility in the event.
When the mediation team learned about the situation, it noticed that there was no gate for the store where the remains were placed. The mediator believed that the developer was negligent in delivering the property.
Mr. Li, representative of the developer
Because of the height difference, our developer deducted the money for the door and let the owner install it himself.
Mr. Li's statement was questioned by Ajian's family on the spot. Xiao Liang said that the developer had made a commitment when buying the house.
06 Property: timely intervention and handling are powerless
The mediator suggested that both parties should take the actual certificate as the basis, and the developer should actively promote the solution of the problem if the corresponding certificate cannot be produced; Secondly, after the property is delivered to the owner, as the property management party, it should perform its management responsibilities to ensure that the owner's rights and interests are protected. However, the property director said that he had handled the matter with due diligence, told the shop that it had been sold when Ali was placing her body, and called the police when the advice was fruitless.
The property manager said that Ali had advised her when she placed her body
The developers' representatives and the property management party present said that they hoped that the Gaoshan Town Government would take the lead in organizing further mediation.
07 The territorial government and the judicial office intervene to lead the mediation
The staff of Gaoshan Town Conflict and Dispute Mediation told the mediation team that they had organized mediation for many times after the incident, but there was a big gap in the opinions of the three parties, and the mediation work was still continuing.
In view of this incident, all parties should actively bear the responsibility. As property owners and managers, developers and property owners need to strengthen property safety management. As individuals, Ali should respect life and the rights and interests of others.
The mediation team hopes that this dispute can be resolved as soon as possible, and that Ajian and his family can regain their peace and happiness.
