Metallurgy, Mineral & Energy
Liuzhou Nanbu Jiazheng Prestressing Machinery Co., Ltd
2016-11-05 06:18  Views:214
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LQM Post-tensioned concrete slabs in buildings have many advantages
1. LQM bonded flat slab anchors use No. 15.24mm seven-wire prestressing strands or No. 12.7mm seven-wire prestressing strand and the maximum characteristic tensile strength of 2000 MPa.

2. Longer Spans
Longer spans can be used reducing the number of columns. This results in larger, dolumn free floor areas which greatly increase the flexibility of use for the structure and can result in higher rental returns.

3. Overall Structural Cost
The total cost of materials, labour and formwork required to construct a floor is reduced for spans greater than 7 metres, thereby providing superior economy.

4. Reduced Floor to Floor Height
For the same imposed load, thinner slabs can be used. The reduced section depths
Allow minimum building height with resultant savings in facade costs. Alternatively, for taller buildings it can allow more floors to be constructed within the original building envelope.

5. Deflection Free Slabs
Undesirable deflections under service loads can be virtually eliminated.

6. Waterproof Slabs
Post-tensioned slabs can be designed to be crack free and therefore waterproof slabs sre possible. Achievement of this objective depends upon careful design, detailing and construction. The choice of concrete mix and curing methods along with quality workmanship also play a key role.

7. Early Formwork Stripping
The earlier stripping of formwork and reduced backpropping requirements enable faster construction cycles and quick re-use of formwork. This increase in speed of construction is explained further in the next section on economics.

8. Materials Handling
The reduced material quantities in concrete and reinforcement greatly benefit on-site cranage requirements. The strength of post-tensioning strand is approximately 4 times that of conventional reinforcement. Therefore the total weight of reinforcing material is greatly reduced.

9. Column and Footing Design
The reduced floor dead loads may be utilised in more economical design of the
Reinforced concrete columns and footings. In multi-storey buildings, reduced column sizes may increase the floor net lettable area.d

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Company name:Liuzhou Nanbu Jiazheng Prestressing Machinery Co., Ltd.
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Business contact:Lynn Deng(Mr.)
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Area: Caribbean Region-Bermuda
Address:No. 5, Xinxing Road, Xinxing Industrial Park, Liujiang County