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2. Concrete cone failure - Wikipedia

   en.wikipedia.org/wiki/Concrete_cone_failure

   The tension failure loads predicted by the CCD method fits experimental results over a wide range of embedment depth (e.g. 100 – 600 mm). [2] Anchor load bearing capacity provided by ACI 349 does not consider size effect, thus an underestimated value for the load-carrying capacity is obtained for large embedment depths.

3. Anchor bolt - Wikipedia

   en.wikipedia.org/wiki/Anchor_bolt

   torque controlled: the anchor is inserted into the hole and secured by applying a specified torque to the bolt head or nut with a torque wrench. A particular sub-category of this anchor is called wedge type. As shown in the figure, tightening the bolt results in a wedge being driven up against a sleeve, which expands it and causes it to ...

4. Four-point flexural test - Wikipedia

   en.wikipedia.org/wiki/Four-point_flexural_test

   Values for the flexural strength measured with four-point bending will be significantly lower than with three-point bending., [8] Compared with three-point bending test, this method is more suitable for strength evaluation of butt joint specimens. The advantage of four-point bending test is that a larger portion of the specimen between two ...

5. Glossary of prestressed concrete terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_prestressed...

   A formwork blockout or recess former fitted to the edge formwork of a post-tensioned concrete member, and that creates a temporary void space external to the prestressing anchor to allow the anchor block or similar to be fitted after formwork stripping. [3]: 32 anchor set See wedge set. anchorage assembly

6. Prestressed concrete - Wikipedia

   en.wikipedia.org/wiki/Prestressed_concrete

   Prestressed concrete is a highly versatile construction material as a result of it being an almost ideal combination of its two main constituents: high-strength steel, pre-stretched to allow its full strength to be easily realised; and modern concrete, pre-compressed to minimise cracking under tensile forces.

7. Rock bolt - Wikipedia

   en.wikipedia.org/wiki/Rock_bolt

   Unlike common anchor bolts, rock bolts can become 'seized' throughout their length by small shears in the rock mass, so they are not fully dependent on their pull-out strength. This has become an item of controversy in the Big Dig project, which used the much lighter pull-out tests for rock bolts rather than the proper tests for concrete anchor ...