1. The planting rubber is divided into two types: injection type rubber and barrel rubber. It is drilled on concrete, wall rock and other substrates, then injected with rubber, and then inserted into steel or profile. Bonding the steel bar to the substrate is a common construction engineering techno... read more
1. Positioning Before the construction preparation, the design and construction drawings should be carefully read. The structural surface must be cleaned up. According to the design drawings, the drilling position of the steel anchorage points should be marked by the line. After the drilling positio... read more
1 . Convenient construction, short procurement cycle and simple process; 2 . Overcome the shortcomings of the strength of the foundation ring, sudden changes in stiffness, and easy brittle failure; 3 . The prestressed structure is safer and more reliable, and the concrete is under pressure for a lon... read more
The role of the chemical anchor is to anchor the fixture, so it raises a problem, that is, the pull strength of the chemical anchor. In order to verify whether the drawing strength of the chemical anchor can withstand the horizontal horizontal tension of the substrate and the pendant and the vertica... read more
(1) For important structural members, the anchor bolts of the inspection lot shall be randomly sampled on the basis of checking the appearance quality of the anchors of the inspection lot and according to the sampling quantity specified in Table N.2.3. (2) For general structural members, 50% of the ... read more