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针对青海盐湖地区特定的自然环境,以水(卤水)、水泥、膨胀剂、高效减水剂为原材料,成功配制出了具有高强度、高流动度、良好抗氯离子侵蚀能力的高强度水泥净浆。试验结果表明,在常温养护下,水灰比在0.32~0.4之间时,各组试件均可达到较高的抗折强度和抗压强度,而且具有良好的抗氯离子侵蚀能力,但采用卤水配制高强度水泥净浆时会引起流动度不佳。因此,采用卤水配制高强度水泥净浆时,需对水灰比范围进行适度调整,调整后的水泥净浆在28d后仍然能够使其抗折强度达到7MPa以上和抗压强度达到40MPa以上,且抗氯离子侵蚀能力基本不变。
Aiming at the specific natural environment in Qinghai Salt Lake area, a series of high-strength cements with high strength, high fluidity and good resistance to chloride ion have been successfully prepared using water (brine), cement, expanders and superplasticizers as raw materials Pulp. The results show that under the condition of normal temperature curing, when the water-cement ratio is between 0.32 and 0.4, the specimens in each group can reach higher flexural strength and compressive strength, and have good resistance to chloride ion erosion. However, Brine preparation high strength cement paste will cause poor mobility. Therefore, the use of brine preparation of high-strength cement paste, you need to adjust the water-cement ratio range, the adjusted cement paste after 28d still able to make the flexural strength of 7MPa or more and compressive strength of 40MPa or more, and Resistance to chloride ion erosion basically unchanged.