Effect of Boron Active Belite Cement on the Compressive Strength of Concrete Exposed to High Temperatures

Abdulkadir Cuuml; neyt Ayd?n; Uuml; lviye Guuml; lsuuml; m Ha?ilo?lu Aras; Tuuml; rkay Kotan; Ali Ouml; z

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Effect of Boron Active Belite Cement on the Compressive Strength of Concrete Exposed to High Temperatures

机译：硼活性贝利特水泥对高温下混凝土抗压强度的影响。

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The boron active belite (BAB) cement is a cement type different from Portland cement due to the presence of B2O3 at 3-4%, low hydration temperature, low early strength and high final strength. In this study, concretes with three similar gradations were produced using BAB, CEM I 42.5 and CEM II 32.5 cements. Prepared cylindrical (Ø100/200 mm) concrete samples were exposed to high temperatures of 200, 400 and 600°C at the end of 7supth/sup, 28supth/sup and 90supth/sup days of standard water curing periods. Then, the compressive strength, ultrasonic pulse velocity and Schmidt hammer strength properties of the concretes were investigated to determine their resistance to high temperatures. As a result, the compressive strength values of concrete with BAB cement were found to be higher in the final period than in concrete with normal Portland cement. Therefore, it can be said that the concretes produced with BAB cement is more durable against elevated temperatures from concretes produced with normal Portland cement. Moreover, the observed strength differences in concretes with BAB cement, were discussed in the light of current information in the literature.

机译：硼活性贝利特（BAB）水泥是一种与波特兰水泥不同的水泥类型，原因是存在3-4％的B2O3，低水化温度，低早期强度和高最终强度。在这项研究中，使用BAB，CEM I 42.5和CEM II 32.5水泥生产了具有三个相似等级的混凝土。制备的圆柱形（Ø100/ 200 mm）混凝土样品分别在第7次，第28次和90次结束时暴露于200、400和600°C的高温下标准水固化期的> th 天。然后，研究了混凝土的抗压强度，超声脉冲速度和施密特锤击强度特性，以确定其耐高温性。结果，发现在最后阶段使用BAB水泥的混凝土的抗压强度值比使用普通波特兰水泥的混凝土的抗压强度值高。因此，可以说用BAB水泥生产的混凝土对普通硅酸盐水泥生产的混凝土在高温下的耐久性更高。此外，根据文献中的最新信息讨论了BAB水泥在混凝土中观察到的强度差异。

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《Journal of Civil, Construction and Environmental Engineering》 |2018年第3期|共6页
作者
Abdulkadir Cuuml; neyt Ayd?n; Uuml; lviye Guuml; lsuuml; m Ha?ilo?lu Aras; Tuuml; rkay Kotan; Ali Ouml; z;
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1. COMPRESSIVE STRENGTH OF RAPID SULFOALUMINATE CEMENT CONCRETE EXPOSED TO ELEVATED TEMPERATURES [J] . Tchekwagep Jean Jacques Kouadjo, Wang Shoude, Mukhopadhyay Anol K., ceramics . 2020,第3期

机译：快速硫化水泥混凝土抗压强度暴露于升高的温度
2. A Study on Compressive Strength and Strain Behavior of Concrete at High Temperatures -Chapter 4 Strain of Compressive Concrete Exposed to Heat- [J] . Shintaro Michikoshi ire Science and Technology . 2008,第2期

机译：高温下混凝土抗压强度和应变特性的研究-第4章受热混凝土的应变-
3. High temperature resistance of boron active belite cement mortars containing fly ash [J] . Gokce H. Suleyman Journal of Cleaner Production . 2019,第FEBa20期

机译：含粉煤灰的硼活性贝利特水泥砂浆的耐高温性
4. AN EXPERIMENTAL STUDY ON THE COMPRESSIVE STRENGTH OF CONCRETE AND BOND STRENGTH BETWEEN STEEL BARS AND CONCRETE EXPOSED TO ELEVATED TEMPERATURES UP TO 700℃ [C] . A Ferhat BINGOL, Rustem GUL The 3rd International Conference on The Concrete Future（第三届混凝土未来国际会议） . 2008

机译：高温下高温下钢筋与混凝土的抗压强度的试验研究。
5. The Effect of Superplasticizers on the Water-Cement Ratio and on the Compressive Strength of High Strength Concrete. [D] . Khoshakhlagh, Pedram. 2011

机译：高效减水剂对水灰比和高强度混凝土抗压强度的影响。
6. Experimental data on compressive and flexural strengths of coir fibre reinforced foamed concrete at elevated temperatures [O] . M.A. Othuman Mydin, N. Mohd Zamzani, A.N. Abdul Ghani 2019

机译：高温下椰壳纤维增强泡沫混凝土的抗压和抗折强度试验数据
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。

Effect of Boron Active Belite Cement on the Compressive Strength of Concrete Exposed to High Temperatures

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