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JC477 standards should increase the compressive strength of more than 1d. 2 on the basis of cement specified in the standard requirements of JC477 sprayed concrete base and over 525 cement portland cement, the quality of the indicator in Table 2. However, the actual injection of cement used in concrete can not fully meet the benchmarks set forth in Table 2, the cement quality indicators. Cement quality index declined 2 basis for the requirements of a variety of cement and cement mixed with accelerator label on the performance of sprayed concrete, we have a type A factory gold wall accelerator (content is the quality of cement 3%),[link widoczny dla zalogowanych], B Factory F b A 92-type accelerator (content is the quality of cement 6% to 7%) with different varieties, grades of cement (Table 3) by JC477 criteria were multiple tests, test results in Table 4. Decline of 3 test specification with cement variety and grade of cement fineness /% Zhu Zhu!!!! Limonene Zhu Zhu: initial set of Portland cement final setting 1d28d525 59l: 453:1012.856.4525 ordinary portland cement 6. 11: Shuai 3:2012.154.8425 682:233:478.948.8425 ordinary portland cement Portland cement slag cement 252:153:203 5.12:103:386.045.6425. 4450 decline of 4 different standard cement concrete impact on the jet test results known from Table 4, in addition to 525 525 ordinary Portland cement and Portland cement, the 425 and 425 Portland Cement Ordinary Portland Cement (BI) is also meet jc477 standards. And not in the general laboratory for the quality of the benchmark index of the cement, so jc477 standard quality indicators of the baseline requirements of the cement and the actual match. 3, moisture content index product moisture content refers to the product storage areas within a certain time, the water absorption of 48 performance indicators. JC477 standard moisture content of less than 2%. But in the actual examination and analysis, we found that by JC4T '/ standard test methods for moisture content required for product moisture content test results are negative (see Table 5). After the constant temperature dry bath before drying the sample quality than the quality of big. Analysis,[link widoczny dla zalogowanych], this is a drying agent in accelerating the process of alkaline substances in the air under certain temperature and the chemical reaction of 0 caO and steam reasons. 'Cement I-way) No. 6 of 1999 cases of water, f, chai, cake color. Circle the soul. �� 0 Introduction of foreign technology in the Malaysian province of KualaJe City NegriSembilan a 3600t / d clinker new cement plant by Halla Engineering & Heavy Industries, Ltd. in March 1995 to undertake the turnkey project. Including the general layout, host equipment supply, equipment and technology required for the preparation of documents, all the detailed civil, structural, mechanical and electrical design and project management and construction supervision. The project started in August 1995,[link widoczny dla zalogowanych], plans for the 3O-month period,[link widoczny dla zalogowanych], January 1997, lO put into operation,[link widoczny dla zalogowanych], the current commercial operation input Pat. This relation is a brief overview of the production line. Wrapped in moisture content test results 5. Http retries 123Ar gold one by one 144-133-134B Factory Fa a 92 type I 174-189-1.90 the test and inspection of our many years that the moisture content of quick-setting agent was not found exceeded the standard. It should be said accelerator is a hydraulic cementitious material, easy to absorb moisture in the air, but by JC477 standard test method is not measured the actual water situation of the product. Therefore, other methods recommended moisture content for product testing, or accelerator not required moisture content. 4 Conclusion (1) JC477 standard ld strength indicator is not a comprehensive response on-site construction of sprayed concrete accelerator growth 1d impact strength, the proposed increase ld strength than the target. (2) JC477 standard requirements for standard cement does not match with the actual use. (3) standard accelerator products on the moisture content of the test method does not truly reflect the actual moisture content of the product, I suggest using other test methods, or the moisture content of quick-setting agent is not a requirement. (Chi Series} small end)
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