Material Characterization of Ultra-High-Performance Concrete (UHPC)

A set of UHPC material tests was performed at the University of Houston Structural Laboratory using cylinder compression tests, direct tensile tests (DTTs), and four-point bending tests. Two UHPC mixes were used: one by Steelike® and one by Tindall Corporation. All UHPC matrices included a 2.0% fiber content by volume with 0.5-in. long high-strength steel fibers produced by HiPer Fiber LLC.
This test database can support analytical modeling of UHPC materials, statistical analyses, or other UHPC material characterization studies. Funding for the reported tests was received by the ACI Foundation with support by Steelike® and the PCI Daniel P. Jenny Fellowship with support by Tindall Corporation.

A new tension test setup for UHPC and associated test data are also included in this database. The test setup involves large-scale tension rebar-free strip tests (TSTs) that were performed to investigate size effects in the tensile behavior of UHPC and correlate them to the small-scale direct tension tests (DTT) per AASHTO T397 [1]. The intent of TSTs was twofold: (a) compare the large-scale (gage length of 35 in. [890 mm]) tension behavior of UHPC with the small-scale (gage length of 4 in. [101.6 mm]) DTTs, and (b) modify the fixed support conditions of DTTs to pin support conditions in the TSTs to produce a state of pure tension force.

本数据集包含休斯顿大学结构实验室开展的超高性能混凝土（UHPC）材料试验，试验类型包括圆柱抗压试验、直接拉伸试验（Direct Tensile Tests, DTTs）以及四点弯曲试验。本次试验采用两种UHPC配合比：一种为Steelike®品牌配方，另一种为廷德尔公司（Tindall Corporation）配方。所有UHPC基体均掺加体积掺量2.0%的纤维，所用纤维为HiPer Fiber LLC生产的0.5英寸长高强度钢纤维。

本试验数据库可用于超高性能混凝土（UHPC）的分析建模、统计分析或其他材料特性表征研究。本项试验的资助方为美国混凝土学会基金会（ACI Foundation），由Steelike®提供支持；此外PCI丹尼尔·P·珍妮奖学金（PCI Daniel P. Jenny Fellowship）也提供了资助，合作方为廷德尔公司（Tindall Corporation）。

本数据库中还收录了一套针对UHPC的新型拉伸试验装置及相关试验数据。该试验装置为无筋大型带材拉伸试验（Tension Strip Tests, TSTs），旨在研究UHPC拉伸性能的尺寸效应，并将其与符合AASHTO T397标准[1]的小型直接拉伸试验（DTTs）进行关联。开展无筋大型带材拉伸试验的目的有二：(a) 将大型试样（标距长度为35英寸[890毫米]）的UHPC拉伸性能与小型试样（标距长度为4英寸[101.6毫米]）的直接拉伸试验结果进行对比；(b) 改进直接拉伸试验的固定支撑条件，在无筋大型带材拉伸试验中采用铰支支撑，以实现纯拉力受力状态。

搜集汇总

背景与挑战

背景概述

该数据集包含超高性能混凝土（UHPC）的压缩、拉伸和弯曲测试数据，旨在支持材料特性研究和分析建模。数据集特别关注尺寸效应和纯张力状态的测试方法，由两个不同的UHPC混合物和2.0%体积的高强度钢纤维组成。