Reinforcing bars include load transfer connectors. A link plate includes openings that mate with the load transfer connectors to overlie the splice between reinforcing bars being spliced. A cover plate may be fastened over the link plate.

Reinforcing bars include load transfer connectors. A link plate includes openings that mate with the load transfer connectors to overlie the splice between reinforcing bars being spliced. A cover plate may be fastened over the link plate.

A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.

Reinforcing bars include load transfer connectors. A link plate includes openings that mate with the load transfer connectors to overlie the splice between reinforcing bars being spliced. A cover plate may be fastened over the link plate.

Reinforcing bars include load transfer connectors. A link plate includes openings that mate with the load transfer connectors to overlie the splice between reinforcing bars being spliced. A cover plate may be fastened over the link plate.

Thermal energy storage (TES) systems based on metal hydride pairs using new class of high efficiency materials are evaluated. The use of low temperature metal cost effective material such hydrides NaAlH4 and Na3AlH6 became possible. In order to obtain high efficiency at reasonable cost high temperature materials were altered by the addition of materials to form reversible alloys and hydrides. The compounds were cycled to determine stability of hydrogen capacity over extended number of cycling. A thermal energy storage system based on two metal hydride pairs such as CaAl/CaH2/Al:NaAlH.sub.4, Ca.sub.2Si/CaH.sub.2/Si:Na.sub.3AlH.sub.6 and NaMgH.sub.2FSi/Mg2SiNaF:Na.sub.3AlH.sub.6 allows low cost and high efficiency performance.

A hydride ion conductor represented by a general formula:

Ba.sub.2-x-mA.sub.xMg.sub.1-y-nB.sub.yH.sub.6-x-y-2m-2n(1), wherein A and B are each selected from at least one or more of the group consisting of Li, Na, K, Rb, and Cs, and 0?x?1, 0?y?1, 0?m?0.2, and 0?n?0.2, excluding a case where x=y=m=n=0.

A hydride ion conductor represented by a general formula:

Ba.sub.2-x-mA.sub.xMg.sub.1-y-nB.sub.yH.sub.6-x-y-2m-2n(1), wherein A and B are each selected from at least one or more of the group consisting of Li, Na, K, Rb, and Cs, and 0?x?1, 0?y?1, 0?m?0.2, and 0?n?0.2, excluding a case where x=y=m=n=0.

A hydride ion conductor is represented by:

MAMBH.sub.4-xF.sub.xFormula (1), where MA is selected from the group consisting of Ca, Sr, and Ba, MB is selected from the group consisting of Mg and Ca, and is different from MA, and x is 0<x<4.

A hydride ion conductor is represented by:

MAMBH.sub.4-xF.sub.xFormula (1), where MA is selected from the group consisting of Ca, Sr, and Ba, MB is selected from the group consisting of Mg and Ca, and is different from MA, and x is 0<x<4.