GB/T 13693-2017Portland cement for road (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 13693-2005 "Portland Portland Cement." Compared with GB/T 13693-2005, the main technical content change As follows:

--- By the mandatory standard to recommended standards;

--- Increase the type of mixed materials (see 4.4,.2005 version 4.3);

--- Modify the classification of road portland cement (see Chapter 5,.2005 edition of 5);

--- Increasing the chloride content of cement requirements (see 6.1.4). This standard proposed by the China Building Materials Federation. This standard by the National Cement Standardization Technical Committee (SAC/TC184) centralized. The main drafting unit of this standard. China Building Materials Academy. Participated in the drafting of this standard. Henan Tongli Cement Co., Ltd., Guangxi Yufeng Cement Co., Ltd., Ningbo Branch Central new building materials shares Co., Ltd., China Three Gorges Corporation, K. Wah Special Cement Co., Ltd., Sichuan Esen Cement Group Co., Ltd., Jiang Power Development Co., Ltd., the State Quality Supervision and Testing Center, Huaxin Cement Co., Ltd., Dalian Cement Group Co., Ltd., China Run Cement Technology R & D Co., Ltd., Xiangyun Building Materials (Group) Co., Ltd., China United Cement Group Co., Ltd., Fushun Cement Co., Ltd., Gezhouba Shimen Special Cement Co., Ltd., Zibo Chongzheng Cement Co., Ltd., Qingzhou Zhonglian Cement Co., Ltd., Inner Mongolia Ancient Autonomous Region Building Materials Product Quality Inspection Institute, Southwest Jiaotong University. The main drafters of this standard. Liu Yun, Sun Minglun, Zhang Guangfeng, Huang Xiaoqing, Yu Shugen, Xu Yigang, Wang Weihua, Wan Kaihong, Cui Jian, Feng Xiaodong, Liu Shengzhong, Lin Yongquan, Huang Minghui, Zhang Limei, Chen Xi, Yuan Liangguo, Tan Aiping, Wang Chengli, Yu Guangmin, Ren Fenmei, Xie Renzhi, Zhang Shun, Zeng Xiaohui, Huo slowly, Yang Mao Xin, Ma Guoning, Zhong Wen, Zhang Xiaoming, Wang Yingjun, Wang Xianbin, Wang Min, Ma Zhongcheng, Gao Xianshu, Zhang Kunyue. This standard replaces the standards previously issued as.

--- GB 13693-1992, GB/T 13693-2005. Road Portland cement

1 Scope

China's national standard for road Portland cement - a cement made specifically for concrete pavement, and one of the few cases where a special cement is justified by the application rather than by convenience. It specifies the terms and definitions, the components and materials, the grades, the technical requirements, the test methods, the inspection rules, and the packaging, marking, transport and storage of road Portland cement. A concrete road slab is loaded differently from a structure. It is thin relative to its plan area, it is restrained by friction against the ground, it is exposed on one face to the sun and the weather and on the other to a base that may be damp, and it carries a repeated bending load from traffic rather than a steady compressive one. The failures that result are not compressive failures: they are cracking from drying shrinkage and from thermal movement, and surface loss from abrasion and from freeze-thaw. So the cement is specified on the properties that address those. Its composition is controlled to limit the shrinkage and to give a high flexural strength rather than simply a high compressive one, the tricalcium aluminate is limited because it is the phase most involved in shrinkage and in sulfate attack, and the abrasion resistance of the hardened cement is a requirement in its own right - which it is not in an ordinary Portland cement standard. To those are added the setting time, the soundness, the fineness, the strength grades in both compression and flexure, and the limits on the minor constituents. Issued on 1 November 2017 and in force since 1 September 2018, it replaces GB 13693-2005.

This standard specifies the terms and definitions of road portland cement, components and materials, grading, technical requirements, test methods, inspection rules, packages Equipment, signs, transportation and storage. This standard applies to road pavement, the airport pavement and wear-resistant, anti-shrinkage and other performance requirements of other projects with high Portland Portland cement Production and use.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 176 Methods of chemical analysis of cement

GB/T 203 for cement granulated blast furnace slag

GB/T 750 cement steaming stability test method

GB/T 1346 cement standard consistency of water consumption, setting time, stability testing methods

GB/T 1596 for the cement and concrete fly ash GB/T 5483 natural gypsum

GB/T 6645 for cement in the graded EAF phosphorus slag Determination of specific surface area of cement GB/T 8074 GB/T 9774 cement bags

GB/T 12573 method of sampling cement

GB/T 17671 cement mortar strength test method (ISO method)

GB/T 18046 used in cement and concrete granulated blast furnace slag

GB/T 20491 used in cement and concrete slag powder

GB/T 21371 for cement in the industrial by-product gypsum

GB/T 26748 cement grinding aids Test method for abrasion resistance of JC/T 421 cement mortar JC/T 603 cement mortar dry shrinkage test method YB/T 022 for the steel slag in cement

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Portland cement clinker, the amount of gypsum and mixed materials, ground into a hydraulic cementitious material.