The results show: 1) The construction of joint concrete is difficult to control on site, which leads to inferior quality compared to prefabricated slab. The worse quality of joint concrete corresponds to a smaller amplitude of temperature rise causing joints damage and a greater damage area. 2)...
(15.2 cm) thick unreinforced concrete slab-on-ground with glass fibers added for shrinkage control. Control joints were cut 1-1/2 in. (3.8 cm) deep by 1/8 in. (0.32 cm) wide at a grid of approximately 16 ft (4.9 m). Roof support columns supported by below-grade footings were ...
If control jointsare not used with the proper spacing and placement unsightly cracks can develop, telegraphing through vinyl or breaking tile grout. Learn more aboutcontrol jointplacement. If wire mesh is used in the slabbut blocks to support the mesh are not used the mesh can end up on th...
Large-Size Jointless Concrete Slab-on-Grade With Combined Prestressing of the post-tensioned slabs as an artificial base in the presence of weak soils and as a large-size ground floor (slab-on-grade) without any joints... T Andrei - International Conference Concrete Days 被引量: 0发表: 2020...
some shrinkage cracks are typical in concrete regardless of the time of year of the concrete pour, especially if control joints were omitted, but large cracks (more than 1/8" wide) or cracks which include dislocation of the concrete (one side of the crack is more than 1/8" "out" or ...
We have provided customized products for constructions of the Hong Kong-Zhuhai-Macao Bridge, including scarifying machines to ensure flatness of bridge joints as well as custom-made dust-free cutting machines to avoid secondary pollution...
Threaded bars (8.8 steel grade) with 10 mm diameter were used, with rigid circular washers with 40 mm external diameter and 10 mm thickness. Nuts on both sides enabled to pre-load each bolt, ensuring the efficiency of the fastening. Fig. 21a and Fig. 21b show the strengthening of the ...
the slab on grade has w2.1 wwf, barely reinforced. senior colleague says tht means the slab doesnt take shear or bending. but how do i go about analyzing with mesh, never done that before, and how do i analyze if the crane mt will crack the slab on grade as well? can i check the...
The slab itself will be constructed as much as possible to "US standards", on a vapor barrier over a well compacted sub-base and gravel base, with standard size welded wire temperature reinforcement. We will also be pouring the slab in sections about 10'x20' and placing control joints at ...
That would apply to slabs-on-grade. For elevated slabs, I rarely spec any construction joints and leave the cold joint placement to the contractor unless noted otherwise on the plans. Is that muddy enough for you? Mike McCann MMC Engineering Upvote 0 Downvote Sep 24, 2011 1 #6 ...