GB/T 16308-2026Ferrocement slabs (English PDF)

4.1 Classification

4.1.1 According to their uses, wire mesh cement boards are divided into wire mesh cement roof panels (code GSWB) and wire mesh cement floor panels (code GSLB).

4.1.2 Steel wire mesh cement roof panels are classified into four levels. I, II, III, and IV, according to variable load and permanent load, as shown in Table 1.

4.1.3 Steel wire mesh cement slabs are classified into four levels. I, II, III, and IV, according to variable load, as shown in Table 2.

4.2 Specifications

4.2.1 A schematic diagram of the wire mesh cement board is shown in Figure 1.

4.2.2 The specifications and dimensions of the wire mesh cement roof panels are shown in Table 3, and the specifications and dimensions of the wire mesh cement floor panels are shown in Table 4.

4.3 Marking Steel wire mesh cement board products are marked in the order of code, nominal size, height, grade and this document number. Example 1.A Class II steel wire mesh cement roof panel with nominal dimensions of 3000mm × 3000mm and a height of 180mm is marked as follows: GSWB3000×3000×180II GB/T 16308 Example 2.A Class II steel wire mesh cement roof slab with nominal dimensions of 3300mm × 1200mm and a height of 250mm is marked as follows: GSLB3300×1200×250II GB/T 16308

5.1 Raw materials

5.1.1 Cement The performance of cement should comply with the requirements of GB 175.Ordinary Portland cement or slag Portland cement are preferred.

5.1.2 Sand The properties of the sand should conform to the requirements of GB/T 14684.Natural or manufactured sand with a fineness modulus of

3.5 is preferred, and the maximum particle size should not exceed [specific value missing]. It should be larger than 4mm, and its mud content (mass fraction) should be less than 1%, and its mud lump content (mass fraction) should be less than 0.5%.

5.1.3 Mixing water It should comply with the provisions of JGJ63.

5.1.4 Admixtures It should comply with the provisions of GB 8076.

5.1.5 Reinforcing bars, steel wire, and wire mesh

5.1.5.1 The performance of the reinforcing bars in the ribs of the wire mesh cement board shall comply with the requirements of GB 1499.1.HRB400 ribbed steel bars are recommended, and their performance... It should comply with the provisions of GB 1499.2.HPB300 steel bars are recommended for structural reinforcement.

5.1.5.2 Cold-rolled ribbed steel bars shall comply with the provisions of GB 13788.

5.1.5.3 The wire mesh should preferably be woven from cold-drawn low-carbon steel wire with a diameter of 0.9mm~1.0mm and a mesh size of 10mm×10mm. Alternatively, welded wire mesh can be used. Other specifications of wire mesh may also be used, but the diameter should not exceed 2mm, and the mesh size should not exceed 50mm × 50mm. The tensile strength of the steel wire should not be less than 450 MPa.

5.1.6 Fibers Steel fibers should conform to the requirements of GB/T 39147, synthetic fibers should conform to the requirements of GB/T 21120, and basalt fibers should conform to the requirements of GB/T 21120. According to GB/T 23265, alkali-resistant glass fibers shall comply with the provisions of GB/T 38143, or other fibers that have been proven to be equally applicable.

5.1.7 Admixtures Fly ash should comply with the requirements of GB/T 1596, and slag powder should comply with the requirements of GB/T 18046, or other materials that have been proven to be equivalent. Applicable admixtures.

5.2 Construction

5.2.1 The overlap length of the wire mesh should not be less than 50mm for the smooth edge and not less than 80mm for the rough edge.

5.2.2 The reinforcement arrangement of the ribs in the wire mesh cement board should not exceed two rows of reinforcement. The clear spacing should not be less than the diameter of the reinforcement and should not be less than 10mm.

5.2.3 The diameter of the reinforcement bars on the surface of the steel wire mesh cement board and the diameter of the stirrups in the ribs shall not be less than 3mm, and the spacing shall not be less than.200mm.

6.4.1 Bearing capacity of wire mesh cement board

6.4.1.1 When inspection is required in accordance with the concrete structure design code, it shall meet the requirements of formula (1).

6.4.1.2 When the bearing capacity is tested according to the actual reinforcement of the steel wire mesh cement board, it shall meet the requirements of formula (2).

6.4.2 Deflection of Wire Mesh Cement Board The deflection of the wire mesh cement board should meet the requirements of formula (3) and formula (4).

6.4.3 Cracks in wire mesh cement board Cracks in steel wire mesh cement boards should meet the requirements of formula (5).

6.5 Protective layer thickness The thickness of the protective layer for the main reinforcing bars of the steel wire mesh cement board should meet the design requirements and should not be less than 5mm.

8.2 Factory Inspection

8.2.1 Inspection Items The factory inspection of steel wire mesh cement boards includes mortar compressive strength, appearance quality, and dimensional deviation.

8.2.2 Batch A batch is defined as 1000 pieces of the same marked product produced under normal conditions and within 3 months. If the quantity at the time of shipment is less than 1000 pieces or less... It can also be done in batches after 3 months.

8.2.3 Sampling

8.2.3.1 Mortar compressive strength Check the 28-day strength test records of the mortar batch under inspection.

8.2.3.2 Appearance quality and dimensional deviations Ten items were randomly selected from the same inspection batch for inspection.

8.2.4 Judgment Rules

8.2.4.1 Mortar compressive strength Mortar strength shall be tested and evaluated according to GB/T 7897.When the mortar strength meets the requirements of 6.1, the mortar strength of this batch of products shall be deemed satisfactory. qualified.

8.2.4.2 Appearance Quality Of the 10 inspected steel wire mesh cement boards, all 10 pieces meeting the requirements of

6.2 in Category A are considered (qualified) for that single item; for Category B... For each item, at least 8 items must meet the requirements of

6.2 to be considered (qualified). All items in Category A must be (qualified), and no more than 2 items in Category B must be (unqualified). If the appearance quality of the batch of products is deemed acceptable, then the product is deemed to be of acceptable quality.

8.2.4.3 Dimensional Deviation Of the 10 inspected steel wire mesh cement boards, those that meet all the requirements of

6.3 in Category A are considered (qualified) for that single item; those that meet the requirements of Category B are (qualified). A single item is considered (qualified) if at least 8 items meet the requirements of 6.3.All items in Category A are (qualified), and no more than 2 items in Category B are (unqualified). If the dimensional deviation of the batch of products is deemed acceptable, then the product is deemed to be within acceptable limits.

8.2.5 Overall Judgment When the mortar's compressive strength, appearance quality, and dimensional deviation all meet the requirements of this document, the batch of products is deemed qualified.

8.3 Type Testing

8.3.1 Inspection conditions Type testing shall be conducted under any of the following circumstances.

a) During the trial production and type approval of new products or products transferred to another factory for manufacturing;

b) When there are significant changes in product structure, raw materials, or production processes;

c) When production resumes after a 3-month hiatus;

d) When the factory inspection results differ significantly from the previous type inspection results;

e) During normal production, a type test shall be conducted once a year;

f) Steel wire mesh cement boards of the same material, process, type, load level, and specifications, continuously produced for.2000 pieces or 6 months. When the total production volume is less than.2000 pieces.

8.3.2 Inspection Items The type inspection of steel wire mesh cement board includes mortar compressive strength, appearance quality, dimensional deviation, mechanical properties, and protective layer thickness.

8.3.3 Sampling

8.3.3.1 Mortar compressive strength Check the 28-day strength test records of the mortar batch under inspection.

8.3.3.2 Appearance quality and dimensional deviations Same as 8.2.3.2.

8.3.3.3 Mechanical Properties Four steel wire mesh cement boards were randomly selected from the same batch of inspected products that passed the appearance quality and dimensional deviation inspections. Two of these boards were then subjected to mechanical testing. One can be tested; two other items are for backup.

8.3.3.4 Protective layer thickness The thickness of the steel wire mesh cement board protective layer was tested using a mechanical property test sample, with a sample quantity of 1 piece.

8.3.4 Judgment Rules

8.3.4.1 Mortar compressive strength Same as 8.2.4.1.

8.3.4.2 Appearance Quality Same as 8.2.4.2.

8.3.4.3 Dimensional Deviation Same as 8.2.4.3.

8.3.4.4 Mechanical Properties The mechanical property testing shall meet the following requirements.

a) If the mechanical properties of both steel wire mesh cement boards meet the requirements of

6.4 when the load is applied to the specified test load, then the batch of products is deemed to have good mechanical properties. The learning performance is qualified.

b) If one of the two wire mesh cement boards does not comply with the requirements of 6.4, the two spare wire mesh cement boards can be used for re-inspection; If the re-inspection results of the two steel wire mesh cement boards both meet the requirements of 6.4, then the original non-compliant piece will be discarded, and the overall quality of the batch of products will be judged... Mechanical performance is qualified; if at least one piece of wire mesh cement board fails to meet the requirements of

6.4 in the retest, the mechanical properties of the entire batch of products will be deemed unqualified. It may fail to meet the standards.

c) If both steel wire mesh cement boards do not meet the requirements of 6.4, they should not be retested, and the mechanical properties of the batch of products should be judged as unqualified.

8.3.4.5 Protective layer thickness The protective layer thickness is measured at 6 points. If the number of unqualified measurement points is less than or equal to 1, it is considered qualified; otherwise, it is considered unqualified.

8.3.5 Overall Judgment When the mortar's compressive strength, appearance quality, dimensional deviation, mechanical properties, and protective layer thickness all meet the requirements specified in this document, the batch of products is deemed to be... It is acceptable.

9.4 Storage

9.4.1 Steel wire mesh cement boards should be stacked separately according to their classification, specifications, grade, and production date.

9.4.2 The storage area should be firm and flat. The stacking height should be based on the self-weight and strength of the wire mesh cement board, the ground bearing capacity, the strength of the dunnage, and the stacking height. The stability is determined. The number of layers should not exceed 6.

9.4.3 When stacking, each pallet should be supported at its four corners to ensure it is stable and not twisted. The supports at each corner between layers should be aligned vertically. on-line.

10 Product Certificates When steel wire mesh cement boards leave the factory, a product certificate of conformity should be provided, which should include.

a) Manufacturer's name, trademark, address, and telephone number;

b) Production date, manufacturing date;

c) This document number;

d) Mortar strength test results;

e) Results of appearance and dimensional deviation inspection;

f) The seal of the manufacturing enterprise's technical inspection department. GB/T 16308-2026. Steel Wire Mesh Cement Board ICS

14 National Standards of the People's Republic of China Replaces GB/T 16308-2008 Steel wire mesh cement board Published on 2026-01-

28 Implemented on August 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.