Publications

Various combinations of a local natural pozzolan and silica fume were used to produce workable high to very high strength mortars and concretes with a compressive strength in the range of 69-110 MPa. The mixtures were tested for workability, density...
Laboratory investigation was undertaken to develop high-performance cement-based grouts for infiltrating fiber-reinforced cementitious composites that makes them ideally suited for structural repair and seismic retrofit. The rheological and...
Six beam-column (B-C) joints were constructed according to the existing practice in Jordan and tested under cyclic lateral loading to determine the effect of using high performance steel fiber reinforced concrete (HPFRC) in place of conventional...
High-performance concrete mixes containing various proportions of natural pozzolan and silica fume (up to 15% by weight of cement) were prepared and stored in sodium and magnesium sulfate solutions, in Dead Sea and Red Sea waters. The progressive...
Bending tests were conducted on ferrocement specimens with steel meshes and fibers. The main objective of the study was to investigate the effects of combining reinforcing steel meshes with discontinuous fibers as reinforcement in thin mortar...
Simulated seismic load tests on reinforced concrete gravity loaddesigned (GLD) reinforced concrete frames, with interior beam-column (B-C) joints of non-optimal reinforcing details to resist earthquake are described. The interior B-C joint lacked...
Cement based grouts containing 0, 5, 10, and 15% replacement with metakaolin and with a water/cementitious materials ratio of 0.38 have been investigated. The rheological and mechanical properties of the proposed grouts are interesting since, from a...
Laboratory tests were conducted to investigate the effects of a local natural pozzolan on certain paste, mortar and concrete properties when used as a separate admixture or interground in amounts more than used in the commercial pozzolanic Portland...
This paper presents the results of an experimental investigation on a total of 30 under–reinforced concrete beams which were subjected to corrosion after the cover zone was replaced with different high performance fiber reinforced cementitious...
This paper reports on the tensile behaviour of fibre-reinforced densified small particles (Fr-DSP) cement containing high volume fractions of steel fibres (more than 2%) and main reinforcement (1-3%) in direct tension. Approximately 30 tensile plate...
A series of seven rectangular high strength concrete beams was tested under third point loading to study the effectiveness of using externally applied high strength steel fiber reinforced concrete jackets (SFRC) as a method of strengthening shear...
A large number of old buildings have been identified as having potentially critical detailing to resist earthquakes. The main reinforcement of lap-spliced columns just above the joint region, discontinuous bottom beam reinforcement, and little or no...
This article reports on the structural behaviour of shear-deficient reinforced concrete beams repaired with Slurry Infiltrated Fibre Concrete (SIFCON), and proposes a simple analytical procedure for predicting the shear capacity of the repaired...
A nonlinear static (pushover) procedure (NSP) was used to model the behavior of interior beam-column (B-C) joints under lateral cyclic loading. The results of the analytical and numerical solutions were compared with the results obtained from...
Shear lag theory was used to predict the extent of fiber debonding at the end of the elastic range in a high performance Fiber Reinforced Concrete (FRC) such as DSP (Densified Small Particles). The analysis predicts two-way debonding at onset of...
A comprehensive experimental program on pullout tests of steel fibers from cement based matrices is described. A specially designed single fiber pullout apparatus was used to provide a quantitative determination of interfacial properties that are...
The steel fiber-matrix properties of high-strength mortar (150 MPa), such as DSP (densified small particles), are obtained and compared to an ordinary mortar (40 MPa) using a specially designed fiber pullout apparatus. A new method for estimating...
This paper presents the compressive behavior of a new type of highperformance (steel) fiber reinforced concrete (HPFRC) called slurry infiltrated mat concrete (SIMCON). SIMCON is made by infiltrating preplaced continuous steel fiber- mats with a...
This paper explores the structural use of a new high-performance fiber reinforced concrete (HPFRC) called slurry infiltrated mat concrete (SIMCON) and presents the effect of using the material for increasing shear capacity of reinforced concrete...
A series of twelve under-reinforced high strength concrete rectangular beams were cast, subjected to exposure conditions chosen to generate a rapid increase of alkali-silica reaction (ASR) damage, repaired and then tested under four-point loading to...
Several repair techniques for restoring the structural capacity of heatdamaged high-strength reinforced concrete shallow beams using advanced composites are proposed. A series of sixteen under-reinforced concrete hidden beams were cast, heated at...
A series of sixteen under-reinforced concrete T-beams were cast, heated at 600°C for two and a half hours, repaired, and then tested under four-point loading to study the effectiveness of using externally applied highstrength fibre reinforced...
PUBLICATIONS AND PATENTS    PATENTS UNITED STATES PATENT NO: US 9,127,457 B2, Sep. 8, 2015, Machine for deforming and cutting plastic strips for enhancing concrete, Mohammad J. M. Al-Shannag, and Abdulrahman M. Alhozaimy, King Saud University.  ...