Estimating the Strength of Concrete Using Surface Rebound Value and Design Parameters of Concrete Material

Jen-Chei Liu; Mou-Lin Sue; Chang-Huan Kou

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Estimating the Strength of Concrete Using Surface Rebound Value and Design Parameters of Concrete Material

机译：利用表面回弹值和混凝土材料设计参数估算混凝土强度

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摘要

This study estimates the strength of concrete, an attempt is also made to increase the accuracy of Calculating the strength, using the nondestructive test (NDT) surface hardness rebound value, material design parameters and regression analysis. The strength of the concrete specimens was 130-480 kgf/cm~2, and their ages were 7-38 days. In total, 166 standard specimens of concrete were grouped into 146 training examples and 20 test examples to estimate concrete compressive strength.rnRegression analysis was performed to establish a mathematical formula. Study results indicate that the correlation coefficient may reach 0.9622, indicating that the proposed method has referential value. Therefore, engineers may use this comprehensive approach to develop NDTs to determine concrete strength.

机译：这项研究估计了混凝土的强度，并尝试使用无损检测（NDT）表面硬度回弹值，材料设计参数和回归分析来提高计算强度的准确性。混凝土试件的强度为130-480 kgf / cm〜2，使用年限为7-38天。总共将166个标准混凝土标本分为146个训练示例和20个测试示例，以估计混凝土的抗压强度。进行回归分析以建立数学公式。研究结果表明，相关系数可能达到0.9622，表明该方法具有参考价值。因此，工程师可以使用这种综合方法来开发无损检测以确定混凝土强度。

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来源
《Tamkang Journal of Science and Engineering》 |2009年第1期|1-7|共7页
作者
Jen-Chei Liu; Mou-Lin Sue; Chang-Huan Kou;
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作者单位

Department of Civil Engineering and Engineering Informatics, Chung-Hua University, Hsin Chu, Taiwan 300, R.O.C.;

Department of Civil Engineering and Engineering Informatics, Chung-Hua University, Hsin Chu, Taiwan 300, R.O.C.;

Department of Civil Engineering and Engineering Informatics, Chung-Hua University, Hsin Chu, Taiwan 300, R.O.C.;

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正文语种 eng
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关键词
strength of concrete; rebound value; design parameters; regression analysis;

机译：混凝土强度;反弹值;设计参数;回归分析;

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1. Repeatability of the rebound surface hardness of concrete with alteration of concrete parameters [J] . El Mir Abdulkader, Nehme Salem G. Construction and Building Materials . 2017,第JANa30期

机译：改变混凝土参数后混凝土回弹表面硬度的可重复性
2. Rebound hammer test to estimate compressive strength of heat exposed concrete [J] . Panedpojaman Pattamad, Tonnayopas Danupon Construction and Building Materials . 2018,第MAY30期

机译：回弹锤试验以评估受热混凝土的抗压强度
3. Corrigendum to 'Evaluation of bond strength between sand concrete as new repair material and ordinary concrete substrate (The surface roughness effect)' [Constr. Build. Mater. 157 (2017) 1133-1144] [J] . Karima Gadri, Abdelhamid Guettala Construction and Building Materials . 2018,第JANa20期

机译：关于“作为新型修补材料的砂混凝土与普通混凝土基材之间的粘结强度的评估（表面粗糙度效应）”的更正。建立。母校157（2017）1133-1144]
4. Study on strength estimating of recycled concrete based on rebound method and ultrasonic-rebound combined method [C] . Jun Chen, You Wen Su, Ting Lei International Conference on Civil Engineering,Architecture and Building Materials . 2011

机译：基于反弹法和超声回弹组合法的再生混凝土力量估算研究
5. Estimating in-situ flexural strength of heat-affected prestressed concrete beams using constituent material models. [D] . Collins, Travis Clayton. 2008

机译：使用组成材料模型估算热影响的预应力混凝土梁的现场抗弯强度。
6. Modulus and Strength of Concretes with Alternative Materials [O] . Ana Elisabete Paganelli Guimarães de Avila Jacintho, Ivanny Soares Gomes Cavaliere, Lia Lorena Pimentel, 2020

机译：替代材料混凝土的模量和强度
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。
8. Strength Design of Reinforced Concrete Hydraulic Structures. Report 7. Strength of Circular Reinforced Concrete Conduits, Analysis and Design [R] . Gerstle, K. H. 1988

机译：钢筋混凝土水工结构的强度设计。报告7.圆形钢筋混凝土管道的强度，分析和设计

Estimating the Strength of Concrete Using Surface Rebound Value and Design Parameters of Concrete Material

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