GB/T 13544-2011 in English
VALIDFired perforated brick and block
- Issued on:2011-06-16
- Implemented on:2012-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
本标准规定了烧结多孔砖和烧结多孔砌块的术语和定义,产品分类、规格、技术要求、试验方法、检验规则、产品合格证、存放和运输等。
本标准适用于以粘土、页岩、煤矸石、粉煤灰、淤泥(江河湖淤泥)及其他固体废弃物等为主要原料,经焙烧制成主要用于建筑物承重部位的多孔砖和多孔砌块(以下简称砖和砌块)。
Introduction
Standard Overview
GB 13544-2011 "Sintered porous bricks and porous blocks" is a national standard of the People's Republic of China, which is used to regulate the technical requirements of sintered porous bricks and blocks with clay, shale, coal ore, etc. as the main raw materials. This standard was implemented on April 1, 2012, replacing GB 13544-2000.
Main revisions
- Add technical indicators for porous blocks.
- Allow the use of sludge and other solid waste as raw materials.
- Increase the requirements for porosity.
- Specify that the hole type is rectangular or rectangular strip holes, and increase the hole size requirements to improve energy saving effects.
Product Classification and Specifications
Product Classification
Sintered porous bricks and blocks are divided into six categories according to their main raw materials: clay (N), shale (Y), coal mill stone (M), fly ash (F), sludge (U) and solid waste (G).
Specifications and dimensions
| Type | Specifications (mm) |
| Brick | 290, 240, 190, 180, 140, 115, 90 |
| Block | 490, 440, 390, 340, 290, 240, 190, 180, 140, 115, 90 |
Grade classification
Strength grade: MU30, MU25, MU20, MU15, MU10.
Density grades: 1000, 1100, 1200, 1300 kg/m³ for bricks and 900, 1000, 1100, 1200 kg/m³ for blocks.
Technical requirements and test methods
Allowable size deviation
| Specification range | Allowable deviation | Range (mm) |
| >400 | ±3.0 | 10.0 |
| 300～400 | ±2.5 | 9.0 |
Appearance quality
No less than one surface and one top surface shall be intact, and the maximum damage size of missing edges and corners shall not exceed 30 mm.
Strength and porosity
MU30 grade bricks: The average compressive strength is 30.0 MPa, and the standard strength is 22.0 MPa.Porosity: Minimum ≥28% (bricks) and ≥33% (blocks), with rectangular or strip hole structure.
Comparison of standard frameworks
| Dimensions | GB 13544—2011 | GB 13544—2000 |
| Product scope | Increase porous blocks, allow the use of sludge and other solid wastes | Mainly for sintered porous bricks |
| Porosity requirements | Minimum ≥28% (bricks) and ≥33% (blocks), using rectangular or strip hole structure | Minimum porosity is not specified |
Implementation recommendations
- Choose appropriate materials: According to the building's load-bearing and energy-saving requirements, choose bricks or blocks that meet the strength grade and porosity.
- Quality control: Strictly test the size deviation, appearance quality and mechanical properties in accordance with the standards.
- Environmental considerations: Give priority to products containing sludge and other solid waste to reduce the impact on the environment.
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