Improved mesoscale segmentation of concrete from 3D X-ray images using contrast enhancers [0.03%]
基于对比度增强的混凝土三维X射线图像细观分割改进方法
P Carrara,R Kruse,D P Bentz et al.
P Carrara et al.
Obtaining the mesostructure of concrete from X-ray computed tomography (CT) requires segmentation of the data into distinct phases, a process complicated by the limited contrast between aggregates and mortar matrix. This paper explores the ...
Reducing setting time of blended cement paste containing high-SO3 fly ash (HSFA) using chemical/physical accelerators and by fly ash pre-washing [0.03%]
使用化学/物理加速剂和粉煤灰预清洗缩短高SO3粉煤灰混合水泥浆体的初凝时间
Franco Zunino,Dale P Bentz,Javier Castro
Franco Zunino
Reducing the carbon footprint of the cement industry has become one of the main concerns of researchers in the field. This study explores different strategies to reduce the setting retardation effect of high-SO3 fly ash (HSFA) on cement pas...
Influence of Substrate Moisture State and Roughness on Interface Microstructure and Bond Strength: Slant Shear vs. Pull-Off Testing [0.03%]
基材湿度和粗糙度对界面微结构以及粘结强度的影响：斜剪试验与拉脱试验的区别
Dale P Bentz,Igor De la Varga,Jose F Muñoz et al.
Dale P Bentz et al.
There are conflicting views in the literature concerning the optimum moisture state for an existing substrate prior to the application of a repair material. Both saturated-surface-dry (SSD) and dry substrates have been found to be preferabl...
Applying a biodeposition layer to increase the bond of a repair mortar on a mortar substrate [0.03%]
生物沉积层在砂浆基材修复砂浆粘结中的应用研究
D Snoeck,J Wang,D P Bentz et al.
D Snoeck et al.
One of the major concerns in infrastructure repair is a sufficient bond between the substrate and the repair material, especially for the long-term performance and durability of the repaired structure. In this study, the bond of the repair ...
Measurement and Modeling of the Ability of Crack Fillers to Prevent Chloride Ingress into Mortar [0.03%]
关于裂纹修复材料防止氯离子渗透能力的测定与建模研究——以砂浆为例
Scott Z Jones,Dale P Bentz,Jeffrey M Davis et al.
Scott Z Jones et al.
A common repair procedures applied to damaged concrete is to fill cracks with an organic polymer. This operation is performed to increase the service life of the concrete by removing a preferential pathway for the ingress of water, chloride...
Leaching of Conductive Species: Implications to Measurements of Electrical Resistivity [0.03%]
导电物质的浸出对电阻率测量的影响
R Spragg,S Jones,Y Bu et al.
R Spragg et al.
Electrical tests have been used to characterize the microstructure of porous materials, the measured electrical response being determined by the contribution of the microstructure (porosity and tortuosity) and the electrical properties of t...
Limestone and Silica Powder Replacements for Cement: Early-Age Performance [0.03%]
石灰石和硅粉取代水泥的效果：早期性能分析
Dale P Bentz,Chiara F Ferraris,Scott Z Jones et al.
Dale P Bentz et al.
Developing functional concrete mixtures with less ordinary portland cement (OPC) has been one of the key objectives of the 21st century sustainability movement. While the supplies of many alternatives to OPC (such as fly ash or slag) may be...
On the Relation of Setting and Early-Age Strength Development to Porosity and Hydration in Cement-Based Materials [0.03%]
关于环境湿度和早龄期强度发展与水泥基材料孔结构和水化关系的研究
Didier Lootens,Dale P Bentz
Didier Lootens
Previous research has demonstrated a linear relationship between compressive strength (mortar cubes and concrete cylinders) and cumulative heat release normalized per unit volume of (mixing) water for a wide variety of cement-based mixtures...
Numerical simulation of heat and mass transport during hydration of Portland cement mortar in semi-adiabatic and steam curing conditions [0.03%]
半绝热和蒸气养护条件下硅酸盐水泥砂浆水化过程的数值模拟研究
E Hernandez-Bautista,D P Bentz,S Sandoval-Torres et al.
E Hernandez-Bautista et al.
A model that describes hydration and heat-mass transport in Portland cement mortar during steam curing was developed. The hydration reactions are described by a maturity function that uses the equivalent age concept, coupled to a heat and m...
The Influence of Calcium Chloride Deicing Salt on Phase Changes and Damage Development in Cementitious Materials [0.03%]
氯化钙融冰盐对水泥基材料相变及损伤发展的影响研究
Yaghoob Farnam,Sarah Dick,Andrew Wiese et al.
Yaghoob Farnam et al.
The conventional CaCl2-H2O phase diagram is often used to describe how calcium chloride behaves when it is used on a concrete pavement undergoing freeze-thaw damage. However, the chemistry of the concrete can alter the appropriateness of us...