October 11, 2019 Sustainability, Printing & Packaging Simon Says: Consumers need guidance to buy sustainable products Consumers have plenty of options when it comes to buying sustainably, but how do they choose the most eco-friendly products and identify genuine claims? Read more September 27, ...
aThe idea of a reinforced concrete structure is that concrete provides a very strong solid material capable of withstand high tensile forces and will crack and shear where this occurs. 一个钢筋混凝土结构的想法是混凝土提供一种非常强的固体物料有能力在承受高强度力量上,并且崩裂并且剪这发生的地方。 [...
aMost efforts made use of time- of-flight (TOF) methods to determine the depth of simulated cracks (notches with well-defined tips) in concrete where the velocity of wave propagation in concrete is known and a characteristic wave pulse–crack interaction is realized [20–22]. 多数努力在混凝土...