This collection consists of ten papers that were presented by ACI Committee 236 at the ACI Spring convention in Chicago, IL, in 2010. Topics include Characterization of the Nanostructure and Microstructure of Concrete, Cracking Reduction, Incorporating Nanofibers into Concrete Mixtures,and Material Behavior Reinforced with Examinations at the Microstructural Level.


Contents:

SP-270-1

Study of Cement Paste Setting at Microstructural Level

by G. Venkiteela and Z. Sun

SP-270-2

X-Ray Nanotomography of Cement Microstructure

by D. A. Lange, Y. Jia, and Y.-S. Liu

SP-270-3

Closed-Form Solutions for Uniaxial Passive Restraint Experiments

by Z. C. Grasley

SP-270-4

Applications of Electrical Impedance Methods in Linking Structure of Micro- and Macro-Porous Concretes to Their Transport Properties

by N. Neithalath and J. Jain

SP-270-5

Improvement of Fresh-State Concrete through Small Additions of Clay

by N. Tregger, R. Ferron, M. Beacraft, J. H. Kim, K. Kuder, and S. P. Shah

SP-270-6

Cement-Based Materials Characterization at Nanoscale: Nanoindentation and Ultrasonic Atomic Force Microscopy (AFM)

by J. H. Kim, P. Mondal, and S. P. Shah

SP-270-7

Monitoring Chemical Shrinkage Using Pressure Sensors

by S. Peethamparan, E. Weissinger, J. Vocaturo, J. Zhang, and G. Scherer

SP-270-8

Internal Curing: Discussion of the Role of Pore Solution on Relative Humidity Measurements and Desorption of Lightweight Aggregate (LWA)

by J. Castro, P. Lura, F. Rajabipour, R. Henkensiefken, and J. Weiss

SP-270-9

Quantifying Damage Due to Aggregate Expansion in Cement Matrix

by M. Pour-Ghaz and J. Weiss

SP-270-10

Mechanical Properties and Nanostructure of Cement-Based Materials Reinforced with Carbon Nanofibers and Polyvinyl Alcohol (PVA) Microfibers

by Z. S. Metaxa, M. S. Konsta-Gdoutos, and S. P. Shah