Concrete Pumping的斯隆比率(sloan ratio)于outubro 2020触及5年低点,是-12.7%。 Concrete Pumping的斯隆比率(sloan ratio)于2020 (-12.7%, -125.8%)和2023 (-2.3%, -125.8%)减少和于2019 (49.2%, +356.1%)、2021 (-4.4%, -65.4%)和2022 (9.1%, -306.6%)增加。
In another study, pervious concrete tortuosity which is defined as the ratio of effective length to the total length of the sample was determined using XRT, which had a mean value of 4.13 [62]. Cosic et al. [32] investigated the effect of aggregate type and size on the pore structure ...
other very important properties worth mentioning are compactness, workability, durability, cement class AFNOR NF EN 197–1 (2012), gravel/sandG/Sratio, granular rangeD/dand grain size of granular concrete mixtures. All these properties were related to common...
Moreover, water–cement ratio influences the connectivity of cement particles and consequent retardation. It has been stated that the negatively charged carboxylate groups react with Ca2+ and make calcium chelate complexes associated with a layer of water on the surface of the cement particle, which...
The ratio between maximum tensile stress and yield strength in the steel girders at the pre-flexion and the type of steel girder are found to be the ... S Staquet,H Detandt,B Espion - 《Advances in Steel Structures》 被引量: 1发表: 2002年 a simp1e method for ca1cu1ating the shea...
ratio of CRC+AC composite pavement was calculated and analyzed.The results show that(1)longitudinal reinforcement design of CRC+AC composite pavement needs not to consider spalling,seepage and thrust failure,just needs to consider tensile failure of reinforcement;(2)longitudinal reinforcement ratio of ...
In these investigations, the level of the prior imposed in-plane drift, the slenderness of the infill panel, the infill aspect ratio and the condition of the frame-infill connections were identified as the governing parameters on the out-of-plane response of masonry infills. Despite the growing...
Design and Construction of a Highway Bridge Deck Slab using Ultra-High-Strength Fibre-Reinforced Concrete Methacrylate ester as well as allylether based polycarboxylates (PCEs) were synthesized to plasticize pastes of cement and silica fume having a water/cement ratio of 0.22. Methacry... 查看全...
In addition to experimental work, a theoretical model is proposed to predict the moment-curvature responses of FRP-reinforced ECC beams. Model results are found to be in good agreement with test data. Theoretical analysis is then conducted to illustrate the effect of reinforcement ratio, compressive...
This can be achieved by reducing the water content of CS concrete mixes as the water demand of CS to achieve target workability is lower, and at the same time reducing the cement content for a given water/cement ratio. In designing such a mix, the loss of fines content attributed to the...