Bal listic penetration in cement

The rationality of analysis was verified by comparing with experimental results. In select embodiments of the present invention, the molded, extruded or spun-cast cement-based paste is left in the mold or supported in the extruded or spun-cast shape until it has hydrated. Those of skill in the art will recognize that some of the steps in these three figures may be done in parallel or the sequence of some steps may be reversed if one step does not require prior completion of another step. After the replacement material in the test cylinder has cured sufficiently for testing, test the test cylinder to ensure that replacement material meets the ballistic criteria. Armor apparatus and method.
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Armor-piercing shell

Measure the depth of the penetration by utilizing a measurement probe. The distance from the gun to the wall was well under 82 feet and is thus unimportant as the velocity of such a bullet is constant for the first 82 feet. An example of such treatment is described in U. Nanoinclusions may be added to improve crack resistance and increase density. Mix for an additional ten minutes. Compared with the concrete with coarse aggregate volume fraction of When determining which side of the wall is to be augmented, many factors are considered.
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Repair of Ballistic Concrete Panels - º Ballistics, LLC

In an alternate embodiment of the present invention, the ballistic paver blocks are applied to numerous walls to create a safe room. Step —Let the Repaired Area Set. When the volume fraction of the coarse aggregate in concrete is less, the penetration depth is insensitive to the change in the coarse aggregate static resistance stress R g , and the calculation precision of R g is low. VHSC comprises particles of similar moduli and size, contributing to a greater homogeneity of the concrete and reducing any differential tensile strain, thereby ultimately increasing the load-carrying capacity. By way of example and not limitation, the vertical edges of the ballistic paver blocks are cut at a 45 degree angle to form beveled edges. Typically denser concrete is stronger.
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Post-processing the replacement material. The effects of the impact location, coarse aggregate shape, maximum coarse aggregate size and coarse aggregate gradation on the penetration depth could be ignored, and the volume fraction of the coarse aggregate had a significant effect on the penetration depth. For example, for a fastener used in conventional concrete that normally uses a one quarter inch pilot hole, it may be useful to use a pilot hole made with a three-sixteenth inch drill bit. C3 and c4 had more coarse aggregate than that in c2, reducing their compressibility. C 3 A content Cement composition affects the permeability of concrete by controlling the rate of hydration. Run the first row of the first layer of the second wall to be protected until making contact with the first wall. In one embodiment of the present invention, the ballistic paver blocks are square.
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