GB/T 35162-2017 in English
VALIDSlow-setting portland cement for roadbases
- Issued on:2017-12-29
- Implemented on:2018-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 35162-2017道路基层用缓凝硅酸盐水泥》由TC184（全国水泥标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
1. Background and significance of standard formulation
GB/T 35162-2017 "Retarded Portland Cement for Road Base" is a standard formulated to meet the demand for high-performance cement in modern road engineering. With the rapid development of transportation infrastructure, the technical requirements for road base materials are increasing day by day. Retarded Portland cement has been widely used in road construction due to its excellent performance characteristics.
2. Comparative analysis of standard frameworks
| Standard dimensions | GB/T 35162—2017 | Comparison of relevant industry standards |
|---|---|---|
| Scope of application | Slow-setting silicate cement for road base | Mainly used in industrial and civil buildings |
| Performance indicators | 7d linear expansion rate ≥0.1%, 28d≤0.5% | No special requirements |
| Setting time | Initial setting ≥300min, final setting ≥360min and ≤720min | Ordinary Portland cement standard |
3. Implementation suggestions and actual cases
Implementation suggestions:
- Material selection:Fly ash and granulated blast furnace slag that meet the requirements of GB/T 1596 should be used first to ensure that their activity indicators meet the requirements.
- Construction mix ratio:Adjust the cement content according to the design requirements of the road base. It is recommended to conduct simulation tests in the laboratory to determine the best mix ratio.
- Quality control:Strengthen the retesting of incoming materials, and focus on monitoring the impact of magnesium oxide and free calcium content on stability.
Actual case analysis:
A highway project uses the slow-setting silicate cement specified in this standard as the base material. During the construction process, the quality of raw materials and construction parameters are strictly controlled according to the technical indicators. The results show that the linear expansion rate of the cement in 7 days and 28 days is 0.15% and 0.45% respectively, which meets the standard requirements, and the stability of the pavement structure is significantly improved.
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