A large number of binder ingredients such as cement and active mineral admixtures are used in the preparation high-strength concrete, water:binder ratio is extremely low. This leads to a amount shrinkage concrete at early stage curing, which poses great threat safety durability structure. To solve cracking problem induced by high shrinkage, we choose change admixture it. In this study, high-per...

The authors discuss fatigue strength of welded rib-to-web junctions at the deck supports with reference to redecking of the Williamsburg and the Bronx-Whitestone bridges, where low available depth necessitated the use of special details, and recommend the use of the “modified nominal stress approach” for the design of such connections. However, experience with thousands of existing orthotropic ...

The premise of this paper is that low water-to-cement ratio (w/c), higher strength concrete may undergo substantial volume changes, especially at early ages (< 24 hours), and the prevention of these volume changes can lead to invisible micro-cracking as well as visible through-cracking. This paper compares the predicted response of concrete undergoing autogenous shrinkage using two different mo...

rangement and distribution of the cracks. Moreover, White (1972) explained the energy implications that The theory of water movement in high shrink/swell soils has expericause the cracks to reappear in the same position from enced consistent revision since Haines first presented the topic in 1923. Several aspects of the infiltration process in cracking soils have event to event. Johnston and Hi...

Cracks in concrete cannot be prevented but the size of cracks can controlled. that occur are strongly influenced by nature and characteristics constituent materials, especially cement water. fresh hard phases. grouped into two, non-structural structural cracks. There several types such as crazing, map cracking, plastic cracking due to shrinkage, settlement, drying temperature changes, chemical ...

One of the main functions renders, together with overall aesthetic appearance building, is protection walls against external aggressive actions, such as water, salts solutions, erosion, and mechanical impacts. However, some anomalies renders may drastically hinder their ability. In fact, cracking, high water permeability, loss adherence to substrate limit barrier effect favour exposure actions....