Punching shear in prestressed concrete deck slabs: a comprehensive study

A large number of bridges in the Netherlands have transversely post tensioned deck slabs cast in-situ between flanges of precast girders and were found to be critical in shear when evaluated by Eurocode 2. To investigate the bearing (punching shear) capacity of such bridges, a 1:2 scale bridge model was constructed in the laboratory and...

Decay Patterns And Damage Processes Of Historic Concrete: A Survey In The Netherlands

Historic concrete buildings (end of 19th century – 1960s), because of their “experimental” character, require a specific approach to both survey and conservation. Although they were built with empirical approaches, some buildings show a fair state of conservation and resilience –even though they have already exceeded the 100-year threshold–...

Deep Learning Object-Recognition in a Design-to-Robotic-Production and -Operation Implementation

This paper presents a new instance in a series of discrete proof-of-concept implementations of comprehensively intelligent built-environments based on Design-to-Robotic-Production and -Operation (D2RP&O) principles developed at Delft University of Technology (TUD). With respect to D2RP, the featured implementation presents a customized...

Strength development of concrete: balancing production requirements and ecological impact

The effective production of concrete structures requires adequate control of<br/>strength development in order to realise the scheduled production cycles. Demoulding of elements can take place only when sufficient strength is gained and the production cycle has to be maintained with seasonal changes of temperature. The use of Portland Cement...

Algorithm for Non-proportional Loading in Sequentially Linear Analysis

Sequentially linear analysis (SLA) is an alternative to the Newton-Raphson method for analyzing the nonlinear behavior of reinforced concrete and masonry structures. In this paper SLA is extended to load cases that are applied one after the other, for example first dead load and then wind load. It is shown that every nonlinear analysis step can...

Porosimetry by DraMuTS applied to DEM-produced cementitious materials

Porosimetry of matured cementitious materials is of hiigh interest, because durability is governed by the capillary pore network structure. Experimental approaches are time-consuming, laborious and thus expensive. Fast developments in computer technology make it nowadays possible quite realistically producing cementitious materials in virtual...

Numerical Simulation of Deformation and Cracking in Maturing Concrete

A survey of plasticity and damage-based models for FE analysis of fracture in concrete

A Constitutive Model for Reinforced Concrete Based on Stress Decomposition

CONTINUUM MODELS FOR DISCONTINUOUS MEDIA

A comparison of different crack models applied to plain and reinforced concrete

SOLUTION METHODS FOR LOCALIZATION IN FRACTURE DYNAMICS