𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The effects of hydraulic pressure and crack width on water permeability of penetration crack-induced concrete

✍ Scribed by Seong-Tae Yi; Tae-Yang Hyun; Jin-Keun Kim

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
823 KB
Volume
25
Category
Article
ISSN
0950-0618

No coin nor oath required. For personal study only.

✦ Synopsis

Cracks in concrete generally interconnect flow paths and increase the permeability of concrete. The increase of permeability due to gradual crack growth allows more water or aggressive chemical ions to penetrate the concrete and facilitate deterioration. This research aims to study water permeability and how it is affected by hydraulic pressure and crack widths in cracked concrete.

Tests were carried out as a function of hydraulic pressure and crack width, using the splitting and reuniting method to manufacture concrete specimens with controlled crack widths. Crack widths were examined using a microscope. The results showed a considerable increase in water transport as crack width and hydraulic pressure increased. But when the crack width was smaller than 50 lm, it had little effect on concrete permeability. Due to autogenous healing, the water flow through such cracks was gradually reduced over time. However, when the crack width was between 50 and 100 lm and hydraulic pressure was greater than 0.025 MPa, concrete permeability increased rapidly.

πŸ“œ SIMILAR VOLUMES

Assessment of the effects of rice husk a
Assessment of the effects of rice husk ash particle size on strength, water permeability and workability of binary blended concrete
✍ Alireza Naji Givi; Suraya Abdul Rashid; Farah Nora A. Aziz; Mohamad Amran Mohd S πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 389 KB

This study develops the compressive strength, water permeability and workability of concrete by partial replacement of cement with agro-waste rice husk ash. Two types of rice husk ash with average particle size of 5 micron (ultra fine particles) and 95 micron and with four different contents of 5%,

The effect of alternating different wate
The effect of alternating different water qualities on accumulation and leaching of solutes in a Mediterranean cracking soil
✍ G. Crescimanno; G. Provenzano; H. W. G. Booltink πŸ“‚ Article πŸ“… 2002 πŸ› John Wiley and Sons 🌐 English βš– 148 KB πŸ‘ 1 views

## Abstract The relevance of bypass flow on water flow, solute or pesticide transport is becoming increasingly recognized. Recent investigations proved that soil salinization may be influenced by bypass flow, i.e. the rapid transport of water and solutes via macropores and/or shrinkage cracks to su