Listen to the person in charge of the loud voice: "Everyone, the Jinyu Garden project project is basically as follows, the project is located in Pudong Chuansha Street No. 101, the original construction plant in the old factory area, the shape of the plot is square, covering an area of 86 acres, the total construction area of 208,611.73 square meters, the building area of 176,317.03 square meters, the floor area ratio of 4.5, the main business forms are high-rise commercial buildings, high-rise residential and multi-storey garden houses and shops at the bottom of the street. There are a total www.biquge.info of 19 residential buildings in the 1st to 19# buildings of the project, including 7 garden houses, underground garages, 1 kindergarten and commercial buildings facing the street; Among them, the 1-17# building is the 9+1F/2 floor bottom merchant or the 6+1F/2 floor bottom merchant, and the 18# to 19# building is the 25F/D1F floor bottom merchant, which is a high-rise, with 1 underground floor and 25 floors above ground, including the elevator machine room and the top floor of the cylinder, with a height of 100.95m and a standard floor height of 3.6m, which is a frame shear wall structure, and the strength grade of the main part of the concrete varies from C40 to C25 according to the situation of different floors. The project is initially considered to be divided into two bids for concrete supply. ”

After the person in charge finished speaking, Li Ruoyu asked: "I don't know if there are any special concrete and technical requirements?" ”

The person in charge nodded and said, "Mr. Li asked just right!" Our project, is across the highway, in addition to two large underground garages, but also an east-west liaison road, the passage is 150.50m long, according to the design unit to provide the passage section drawing, the proposed box-shaped channel is in the form of triple holes, the east-west liaison road grade is the urban trunk road, two-way 3 lanes, for two spans, of which the A axis to the B axis span is 19.95m, The span from the B axis to the C axis is 19.54m, and the customs road is a special road, with 2 lanes and a span of 13.86m, and the total span of the passage is 53.35m. The channel structure is in the form of a reinforced concrete frame structure; Mortar on both sides of the road, wool stone counterweight retaining walls and road-related drainage facilities. ”

"Except for the 30~33 axis transverse range, which will be used as an ordinary roadway, the rest of the road surface is planted. The main structure of the box-shaped passage of the reinforced concrete frame structure is made of C30 concrete cast-in-situ, which is composed of independent foundation, frame columns, frame beams and panels. Its north-south axis is A~D four axes, the spacing is 19.95m, 19.54m, 13.86m, the total spacing of the axis is 53.35m, the east-west axis is 1~63 axis, except for the 27~28 axis spacing of 5.50m, the rest of the axis spacing is 5.0m, the total spacing of the axis is 150.50m. ”

Seeing that Li Ruoyu and others were listening carefully, the person in charge continued: "The entire box-shaped channel beam plate system is disconnected on the axes of 9~10, 18~19, 27~28, 36~37, 45~46, and 54~55, and the underpass is divided into seven independent systems in the length direction, and the system lengths are 42.45m, 44.9m, and 45.15m respectively; The spacing between systems is 10.0cm. The beam-plate structures of the above axes are all cantilevered structures. The independent foundation is in the form of large feet, and in the backfill cushion area, the bottom cross-sectional dimensions are 3.30m×5.10m on the A axis, 3.60m × 3.60m on the B and C axes, and 3.30m × 3.60m on the D axis. In the rock area, the bottom section sizes are 2.40m × 3.60m on the A axis, 2.40m × 2.40m on the B and C axes, and 2.40m × 3.0m on the D axis! ”

"The frame column is in the form of a rectangular column, and the cross-sectional dimensions of the column are 800mm × 900mm on the A axis, 700mm × 700mm on the B and C axes, and 700mm × 800mm on the D axis; The frame beam is in the form of rectangular beam, and the cross-sectional dimensions of the main beam are 600mm×1200mm; The cross-sectional dimensions of the secondary beam are 400mm× 500mm, 300mm× 500mm, 300mm×400mm; Cantilever beam end beam cross-sectional size 200mm×400mm; Between the 19th and 20th axis and the 43rd and 44th axis, the position is the installation position of the jet fan, the main beam is widened by 500mm, and the secondary beam is widened and increased accordingly. ”

"The plates are all two-way stressed plates, and the thickness of the plates is 150mm. In addition, the outside of the channel axis and the retaining wall are also covered with 15cm thick reinforced concrete prefabricated slabs. The box-type access road is built according to the requirements of the urban main road road standard. After the necessary excavation, leveling and compaction treatment of the roadbed are accepted, the pavement structure adopts a 25cm thick 4% cement stable graded gravel subbase; 20cm thick cement stabilized graded gravel base; 0.8cm thick slurry seal, 7cm thick AC-25 asphalt concrete; 5cm thick AC-16 asphalt concrete; 4cm thick modified asphalt SMA-13 asphalt concrete pavement surface course. ”

"Drainage ditches are set on both sides of the main road and on the right side of the inspection road, and the drainage ditch is designed with the same slope and slope as the road, and the drainage floor drain is buried at the lowest part of the drainage ditch, and then discharged into the culvert through the DN200 cast iron drainage pipe. The counterweight retaining walls on both sides of the box-shaped passage are made of M7.5 mortar masonry C30 wool stone and M10 cement mortar joints, and the retaining wall is provided with settlement joints at a spacing of 20.0~25.0m, and the width of the joints is 2.0~3.0cm; the wall body is staggered with PVC drainage pipes of φ100mm diameter according to the spacing of 2.0m×2.0m. The backfill of the wall is compacted with gravel soil backfill. The retaining wall is set up at both ends of the road entrance and exit with 80cm thick horizontal wall ends. ”

When the person in charge finished speaking in one breath, in addition to Li Ruoyu and Xie Zili, Qin Haijuan, Wang Lingling and production manager Wan Yuelin were all stunned, this person is also verbose enough, and the latter ones can be printed on the data!

I only heard the person in charge say: "The design strength grade of the concrete of this project is C20 to C40, and the maximum pumping height is 100 meters, which has high requirements for the pumpability of concrete, and at the same time to ensure the strength and workability of concrete." Therefore, we hope that your company will make a special design for the important structural parts and high-rise pumped concrete mix ratio to meet the requirements of construction. ”

Li Ruoyu nodded and said, "That's right!" This is our first cooperation, and you are also our company's first customer, so we have been to the most stringent requirements to do concrete, in addition to the quality of concrete strict control, we also need to communicate and coordinate more running-in, I hope this cooperation can be a complete success! Below we will also make a production and technical disclosure to you, mainly to introduce our company's concrete raw materials, supply capacity and some details and precautions in the concrete supply process. Next, let's ask our company's chief engineer Xie Zili to talk about the technical aspects! ”

Xie Zili coughed lightly and said: "Everyone, let me talk about some of the technical quality of our company's concrete, as well as some situations in the process of concrete production and supply, pouring and curing. First of all, I am talking about our company's raw material quality assurance measures. The cement is made of P.O42.5 cement, which is produced by Jiaxin Cement Co., Ltd.; we will strictly require that each batch of cement must have a factory certificate, and according to the same batch number of no more than 500t for a batch, random sampling for re-inspection. After the cement enters the site, it is stored in a fixed tank to ensure that it will not be mixed. ”

"Speaking of admixtures, we use high-quality fly ash from Chuansha Power Plant: Class F first-class fly ash, we also require that each batch must have a factory product certificate when entering the site, each car for fineness testing, every 200t batch of sampling re-inspection, unqualified or incomplete information will not be accepted, so as to ensure that the quality of our concrete products is controllable on the glue."

Li Ruoyu whispered to Qin Haijuan beside him: "Director Qin, listen to what Xie always says, and this task will be handed over to you in the future." ”

Qin Haijuan nodded and said, "Okay, Mr. Li, I'm remembering the main points!" (To be continued.) )