Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2024. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ Exploring the effects of gravel shapes on vibration compaction behaviours of coarse-grained mixtures via DEM simulations https://trid.trb.org/View/2310674 Sun, 04 Feb 2024 16:01:30 GMT https://trid.trb.org/View/2310674 Permanent Deformation Behavior of Coarse-Grained Residual Subsoil Under Large Amplitude Loading Cycles https://trid.trb.org/View/1974061 1.5-times greater Hardin breakage index compared to the values obtained from monotonic TX tests. The obtained experimental results show that an increasing CSR increases the cumulative strain but, in contrast, decreases the resilient modulus. The CSR primarily shapes the strain–stress curves obtained from the cyclic TX tests. Based on the laboratory results, a cumulative strain prediction formula, as well as a formula for the prediction of the steady resilient modulus, was established. The field tests were also involved in the case study on accumulative deformation prediction. Consequently, the traffic-load-influenced depths were identified, and an empirical method for predicting traffic-load-induced deformation was established for this residual soil subgrade. The magnitude of the CSR, the number of traffic-loading cycles, and the in situ confining pressure are considered in the empirical method. Good agreement between the predicted deformation and the measured deformation indicates the feasibility of this method. The intensity of dynamic stresses on the subgrade surface and the attenuation law of the dynamic stresses along with the subgrade depth were also discussed. The findings are expected to improve our understanding of the permanent deformation behavior of coarse-grained residual soil under optimal moisture content conditions when subjected to long-term traffic loading.]]> Wed, 06 Dec 2023 17:02:37 GMT https://trid.trb.org/View/1974061 Investigation on the triaxial creep characteristic of coarse granular materials with different initial void ratios https://trid.trb.org/View/2269794 Fri, 17 Nov 2023 09:02:00 GMT https://trid.trb.org/View/2269794 Use of hydraulic radius to estimate the permeability of coarse-grained materials using a new geodatabase https://trid.trb.org/View/2173925 Wed, 28 Jun 2023 16:29:14 GMT https://trid.trb.org/View/2173925 Mechanical Characterization of Coarse-Grained Waste Rocks Using Large-Scale Triaxial Tests and Neuroevolution of Augmenting Topologies https://trid.trb.org/View/2151355 Wed, 31 May 2023 08:03:35 GMT https://trid.trb.org/View/2151355 Experimental investigation of the particle breakage of coarse-grained materials under impact loading https://trid.trb.org/View/2111968 Tue, 28 Mar 2023 09:56:55 GMT https://trid.trb.org/View/2111968 DEM Modelling of Unbound Granular Materials for Transport Infrastructures : on soil fabric and rockfill embankments https://trid.trb.org/View/1876027 Wed, 01 Sep 2021 14:27:03 GMT https://trid.trb.org/View/1876027 The Scale Effect of Coarse-Grained Materials by Triaxial Test Simulation https://trid.trb.org/View/1765428 Fri, 23 Jul 2021 15:25:08 GMT https://trid.trb.org/View/1765428 Contribution of coarse particles from road surfaces to dissolved and particle-bound heavy metal loads in runoff: A laboratory leaching study with synthetic stormwater https://trid.trb.org/View/1753027 250μm) to release dissolved and particulate-bound heavy metals (i.e. Cd, Cr, Cu, Ni, Pb and Zn) during rainfall/runoff. Towards this end, street sediments were sampled by vacuuming at seven sites in five Swedish cities and the collected sediments were characterized with respect to their physical and chemical properties. In the laboratory, the sediments were combined with synthetic rainwater and subject to agitation by a shaker mimicking particle motion during transport by runoff from street surfaces. As a result of such action, coarse street sediments were found to release significant amounts of heavy metals, which were predominantly (up to 99%) in the particulate bound phase. Thus, in dry weather, coarse street sediments functioned as collectors of fine particles with attached heavy metals, but in wet weather, metal burdens were released by rainfall/runoff processes. The magnitude of such releases depended on the site characteristics (i.e. street cleaning and traffic intensity), particle properties (i.e. organic matter content), and runoff characteristics (pH, and the duration of, and energy input into, sediment/water agitation). The study findings suggest that street cleaning, which preferentially removes coarser sediments, may produce additional environmental benefits by also removing fine contaminated particles attached to coarser materials.]]> Thu, 17 Dec 2020 09:55:30 GMT https://trid.trb.org/View/1753027 A Semi-Empirical Elasto-Plastic Constitutive Model for Coarse-Grained Materials that Incorporates the Effects of Freeze-Thaw Cycles https://trid.trb.org/View/1713414 Thu, 23 Jul 2020 16:13:33 GMT https://trid.trb.org/View/1713414 Investigation of the Parallel Gradation Method Based on the Response of Track-Bed Materials Under Cyclic Loadings https://trid.trb.org/View/1697187 Tue, 26 May 2020 10:22:15 GMT https://trid.trb.org/View/1697187 A Fatigue Model for Track-Bed Materials with Consideration of the Effect of Coarse Grain Content https://trid.trb.org/View/1692079 Wed, 08 Apr 2020 08:52:32 GMT https://trid.trb.org/View/1692079 A New Interpretation of Three-Dimensional Particle Geometry: M-A-V-L https://trid.trb.org/View/1683883 Tue, 24 Mar 2020 10:51:31 GMT https://trid.trb.org/View/1683883 A Damage-Softening and Dilatancy Prediction Model of Coarse-Grained Materials Considering Freeze–Thaw Effects https://trid.trb.org/View/1671509 Wed, 29 Jan 2020 14:59:38 GMT https://trid.trb.org/View/1671509 MANUAL DE ENSAYOS PARA LABORATORIO. AGREGADOS (AG) PARA MEZCLAS ASFALTICAS https://trid.trb.org/View/1607204 Mon, 20 May 2019 17:22:10 GMT https://trid.trb.org/View/1607204