Rebar reinforcement is used to marry new concrete poured into the hollow post with the footing. Many productions of lightweight concrete blocks had been designed and among them are by the use of lightweight aggregates. The rheology of concrete is of great importance in thin post-tensioned concrete floor slabs with a span-to-depth ratio of more than 40. Aluminium powder: 6 gm. Shop Basalite 50-lb High Strength Concrete Mix in the Concrete, Cement & Stucco Mixes department at Lowe's. 1. For construction of divider walls in frame structures. A few of these benefits include variety, repairability, durability, being environmentally friendly, and maintenance-free. You can build these forms and precast your own 48″, 36″, or 24″ reinforced lightweight concrete panels that link together to make long lasting and durable concrete garden boxes. 005*wc lightweight concrete minimum thickness = * minimum thickness of table 1. In addition to mechanical properties development, shrinkage and creep during 3. Much of the fundamental basis for the current lightweight concrete provisions in the AASHTO LRFD Bridge Design Specifications is based on research of lightweight concrete (LWC) from the. If you would like to buy in bulk, or enquire about our concrete posts, please get in touch with one of our team to assist your enquiry. It has significant merits in mitigating the negative impact on the environment during the manufacturing of Portland cement and reduces the consumption of natural resources. LightWeight Concrete. 3. The present study presents a methodology to design ultra-lightweight concrete that could be potentially applied in monolithic concrete structures, performing as both load bearing element and thermal insulator. Because of the lower post-elastic capacity of lightweight concrete, it is prudent to limit the maximum strength levels too the ACI 318 requirements which govern shear, tension, torsion. The method for calculation of lightweight Concrete factor is as follows : lightweight concrete factor = = 1. The general crushing and manufacturing process of light concrete, LC, using PET as component in concrete, is shown in Figure 1. 3m Post: N/A: 3. 6 cm and the final depth was 4. You can return the item for any reason in new and unused condition: no. *. A low maintenance alternative to wooden fence posts, the Lightweight Concrete Post eliminates the need for nails, brackets and fixings. 09. The size post you should use for a gate will depend on a few factors, such as the type of gate you are installing, the size of the gate, the materials used, and the space it is filling. Foundation pads come in different sizes and compositions. for bearing loads. There are numerous "lightweight" concretes available, with three distinct separations: 1. To begin, mix together the ingredients for lightweight concrete. 99. Smooth Surface: A smooth finish gives a clean, modern appearance to the fence post. Then I stop and use an improvised stir stick from a wooden dowel to hand stir the cement mix. Lightweight Concrete Topping products supplied and constructed by the following is. Aerated Concrete: Aerated concrete is a type of lightweight concrete that is made by adding a foaming agent to the concrete mixture, and then curing the concrete in a high-pressure autoclave. Faster installation. Structural concrete. Concrete fence posts are an essential part of your fence panel installation and are typically sturdier than any other variety. Concrete is a heavy building material. 8' x 4" x 3" Forest Concrete Fence Post. , 10 in. The other option is a wood structure with (assumed) 2 layers of 3/4″ subfloor, vapor barrier, and then 2-3″ of light weight concrete. Grey. It has a minimum compressive strength of 17 MPa. com. State-of-the-Practice Report Partial-Depth Precast Concrete Deck Panels (. Sika PostFix is a two-component, mix-in-the-bag expanding foam for supporting non-structural posts such as fence, mailbox, and signposts. Two 4×4 Wood Posts with Simple Rigging for a Square Shade Sail. Void. 5 cm 3. If you are planning on changing the color of the blocks, then insert dyes, colorants or other tinting additives at this time. Membership Price: $24. space and only requires you. The SFCC (Steel-Foam Concrete Composite) panel is made up of thin profiled steel sheets. Its density can be anywhere between 70 lbs/ft 3 to 120 lbs/ft 3. • Assorted Details in case of Lightweight Insulated Concrete Installations. Here we show the development of structural lightweight aggregate concrete in the 1,200–1,600 kg/m3 density range. for structural lightweight concrete [23], LWA for the application in masonry lightweight concrete [24] and LWA for insulating concrete [25]. Figure 2 show Wabash Bridge constructed using precast high performance lightweight concrete. Concrete samples were produced with different mix ratios, to determine the best and economic proportions that will give acceptable compressive strengths. This density is the minimum limit for lightweight concrete according to the. Side Tables and Stools. 00 (14%) List Price: $28. SAKRETE 67 lb. Given a fixed fiber volume, increasing the PF ratio was more conducive to concrete’s post-cracking behavior while increasing the BF ratio benefited concrete’s. Maximum load of 4,200 lbs. Concrete Posts. The Lytag and conventional lightweight concrete mixes had a brittle failure; whereas the concrete mixes incorporating the manufactured plastic aggregate had a ductile post-peak behaviour. 2 to 2. Now that you’ve determined the size of the hole you’ll need, you can use the chart below to determine. of lightweight concrete (ranges between 14. freshly mixed concrete density, equilibrium density, and oven-dry density of lightweight concrete. The ratio and the amount should always be maintained for the better result of the concrete. But there’s no compromise on strength. This bag of mix is enough to cover a 3/4 cu. C [], the more significant work on lightweight concretes has been carried out in the last few decades [2,3,4,5,6,7,8]. Shade Sail Combo with Steel Posts In Concrete. 49 kg/m 3. While there are many types of cement, Portland cement is the. See full list on nitterhousemasonry. Lightweight concrete is a form of concrete that contains an expansion agent, which increases the volume of the mixture while also improving properties like inability and lowering the dead weight. Lightweight concrete, often abbreviated as LC, is a versatile building material that offers numerous advantages in construction. Pro-Mix Advanced Concrete 50-lb Fast Setting Concrete Mix. Check out our lightweight concrete planter selection for the very best in unique or custom, handmade pieces from our planters & pots shops. Fast 2K Fence Post Mix is a revolutionary product that replaces traditional concrete as a fencing post installation material. 5 cm 3. ft as compared to regular concrete density of 150 lb/cu. Dia footer of 2,355 lbs. This structural concrete is also used in the construction of foundations, beams, roofs and load-bearing walls in steel and concrete structures. Model # 58910156. Lightweight concrete, also known as structural low-density concrete, is a type of concrete made using lightweight aggregates such as clay, shale, volcanic rock, etc. Shop our selection of Posts in the section of Posts & Accessories in the Building Materials Department at The Home Depot Canada. Lightweight concrete (LWC) is a remarkable human creation that is employed in a variety of building applications. Concrete structures are prone to earthquake due to mass of the structures. Low-Density Natural Aggregate Concrete. Item #53770 | Model #HB6990. Add one-half of a 94 lb. Also, for lightweight concrete, the effect of post-tensioning is higher (lower . Mix the lightweight aggregate with powdered Portland cement and lime. and aluminum content should be 0. They give superior resilience against severe weather conditions and are not susceptible to rust, rot or decay. They give superior resilience against severe. Slowly add water to the tub until the mixture resembles the texture of cottage cheese. Compressive strength are low, regarding from about 0. The test also examined the effect of prestressing in tendons and proper prestress conditions to reduce the deflection and crack width, and to enhance the. 1: Typical Concrete Block Masonry Unit (Hollow Unit, with Flanged Ends) (Ref. Handi-Block only weights 18 lbs and has a load bearing strength of up to 1,728 lbs per pier, making. Concrete is considered to be lightweight is the density is not more than 2200kg/m 3 (the density of normal weight concrete is assumed to be between 2300kg/m 3 and 2400kg/m 3) and a proportion of the aggregate should have a density of less than 2000kg/m 3. Because foam concrete has a large amount of paste and no coarse material, it will shrink more than regular concrete. Moisten the hole with a garden hose, if it's not raining. Beside above,how thick does a concrete planter need to be? 1. 5 (3 reviews) Product Code: 700241. Composite fencing lasts far longer than traditional wood and fits into existing concrete fence posts. I would second the suggestion to use Quikrete's countertop mix. Fast Setting Concrete - 50 pounds for just $5. The regulations regarding the lightweight substrates. A lightweight concrete block can be defined by having a gross area of a unit, if its total size is perpendicular to the direction of load. By using a porous lightweight aggregate of low specific gravity, lower than 2. Sika Polyurethane Fence Post Mix (Actual Net Contents: 33-fl oz). Kaushal Kishore, Materials Engineer, Roorkee. Concrete fence posts are an essential part of your fence panel installation and are typically sturdier than any other variety. The objective of the present study is to examine the flexural behavior of two-span post-tensioned lightweight aggregate concrete (LWAC) beams using unbonded tendons and the reliability of the design provisions of ACI 318-14 for such beams. The second variant for analysis were prefabricated walls from lightweight concrete, made of sintered clay aggregate with a foam core. Adding portland cement to pail. Concrete Construction. Advantages of Lightweight Concrete (LWC) Reduction in dead weight. 6. This lightweight concrete post is a low maintenance alternative to timber posts and removes the need for for nails, brackets or fixings. In this experimental study, six post-tensioned light weight concrete (LWC) continuous one-way slabs were tested in the following manner: the flexural behaviors of the members. For general concrete work with a minimum of 2" thickness is best used for floors, patios, walkways, steps, curbs, basketball hoops, mail boxes, and flag poles. 4) meshes was used to screen the material. CAMO BLOCK is a lightweight, heavy-duty alternative to concrete deck blocks. 6 m) and. Proper planning and quality assurance can reduce problems that might otherwise occur during proportioning and placement of lightweight concrete. A well-known product is the AAC, also called. Our concrete posts are heavy-duty and can withstand the elements. For example, lightweight concrete is often used in high-rise construction, where the weight of the building materials can put strain on the foundation and the structure. 2. Lightweight aggregate concrete manufactured by solid waste or recycled by-products is a burgeoning topic in construction and building materials. Compare. (460 mm) deep post-tensioned lightweight concrete beams centered on 10 ft (3. Compressive strength. The maximum strength value of TM III on day 28 was 26 Mpa. in 3000 PSF soil. The 60-story Nations Bank Building in North Carolina, United States used presoaked expanded shale lightweight aggregate in 117 mm thick slabs that were supported on posttensioned concrete beams at 3. PART 2 - PRODUCTS 2. SAKRETE 67 lb. Grey. The parameters investigated were the effective prestress and loading type, including the symmetrical top. This will be the main fuel for the sculpture. Once all the squares are cut and stacked, you’ll have a cube that’s 16″x16″x18″. Lightweight concrete may cost more per cubic yard than normal weight concrete, but because less concrete and less steel are required the total cost of materials can be reduced significantly. First and foremost, you need to think about the moisture content. Select collection branch for local availability. 05%- 0. Disadvantages of Foam Concrete. Inclusion of nano-materials can enhance strength properties. View More. About this Product. 16lbs but load-rated to support over 1800lbs, CAMO BLOCK is an easy-to-carry deck foundation that also nests together for easy transport. 4. 3 and Table 9. Lightweight Aggregate Concrete are used as screeds and reinforcement for general purposes especially when screeds or similar thickening and the weight to the floor, roof, and other structural members of the building. Figure 9. Maximum load of 2,355 lbs. Fibermesh is for crack control. 0 MPa). For Homeowners. 7. It is ideal for creating deck, porch and other load-bearing supports as well as decorative and attractive bases for post-setting applications. 6m Post:Lightweight concrete provisions throughout the code have seen numerous changes and clarifications based on the new method for determining λ. e. With respect to freezing and thawing, the lightweight concrete doesn’t present special problems. Add To Cart. The advantage to these types of aggregate is that they often do not require processing apart from crushing or screening. The utilization of LWC (Lightweight concrete) has been a. Pavement structure comparison 4 Figure 1. pdf) (February, 2022) Lightweight Concrete Bridge Design Primer (. Lightweight concrete has been used in monolithic construction in the world, primarily in high-rise buildings (reducing their weight), in long-span roofs (reducing the dead load,. Lightweight Concrete Submittal theclipper (Structural) (OP) 24 Aug 07 10:06. Vs. Bridge approach embankments (Indiana) 5 Figure 1. 5. Use our concrete gravel boards in conjunction with our concrete posts to further increase the potential lifespan of your garden fence. Yo ung ’s modulus). Lightweight concrete is mostly used for retrofits where the existing structure may not be able to handle additional dead load. Most fence post holes will need between 1 - 4 bags of concrete to securely hold the post in place. 300 to 1850 kg/m3, whereas conventional. This review starts with a retrospective that gives an idea of the wide range of applications covered by lightweight concrete during the last century. What is Light Weight Concrete. Although lightweight concrete is well known and has proven its technical. any decent concrete vendor should have lightweight mix designs on hand and be able to furnish you with weight and cost ranges. for pricing and availability. The lightweight and structurally efficient elements are prefabricated and assembled on-site. aggregate, Light weight 1. This reduces the time to install significantly, as well as the overall cost of the job. The aim of this research is to create and evaluate prefabricated, light-weight, seismic-resistant, load-bearing steel-concrete composite panels and the connections that link them to form a complete structure. 99. Insulation of water pipes. 5 for two types of LWAC and NWC beams produced with similar. Use a slump of 100 mm to 150 mm. 37 inc VAT Each. Plastic planters are lightweight and easy to move around. thick slabs supported on 18 in. 19 Solid DIY Shade Sail Post Ideas. Comparing the weight of a traditional concrete and a lightweight concrete, the different values depend on the type and amount of insulation per cubic meter, however, basically the density values go from 2000-2400 Kg/ mc of a traditional substrate to the only 400-500 kg/ mc of a lightened one. They keep the timber panel off the ground & prevent any unnecessary rotting. 99. ft. - Each TuffBlock is load rated for 1700lbs. Join the sink form to a melamine box to create the final shape of your countertop. 8, 90. 2) Figure 3. The current emphasis on upgrading structures makes LWC highly desirable as a construction. It is possible to develop light weight concrete of density up to 1450 kg/m 3 using pumice. Product Details. The ACI 213 structural grade Lightweight Concrete specification says that the equilibrium dry density of Lightweight Concrete is between 90 and 115 lb/ft3. Lightweight concrete. The more water you add, the smoother the consistency, but your project will also take longer to dry. The inner steel member, being encased in lightweight concrete, is protected while at the same time provides the structural support for the canopy panel. This study focuses on the development of durable structural lightweight concrete (LWC) by incorporating expanded perlite aggregate (EPA) in the range of 0 to 20% by weight. The. Lightweight concrete is a special type of concrete made to be used for special purposes. Lightweight concrete is defined by LRFD 5. Structural lightweight concrete has an in-place density (unit weight) on the order of 90 to 115 lb/ ft3 (1440 to 1840 kg/m3) compared to normalweight concrete with a density in the range of 140 to 150 lb/ ft3 (2240 to 2400 kg/m3). You have to follow a specified rule for mixing the aggregates. StoPanel Systems Prefabricated Exterior Wall Panels are a better alternative to precast concrete wall panels. The process of concrete hardening once it has been placed is called curing, and is a slow process. for pricing and availability. انواع الخرسانة الخرسانة الخفيفة Lightweight Concrete هي خرسانة خفيفة الوزن وزنها أقل من 2000 كج/م3 تستخدم للتقليل من وزن المنشأ وكذلك تستخدم لاغراض الحراري والصوتي، يوجد ثلاثة أنواع من هذه الخرسانة هي:This research work reports the investigation carried out to determine the use of coconut shell as an aggregate in light weight concrete. Lightweight replacement for concrete. -. Fast 2K Fence Post Mix is a revolutionary product that replaces traditional concrete as a fencing post installation material. Its lightweight nature and good structural properties make it an ideal material for this. For structural applications the concrete strength should be greater than 2500 psi (17. 5 to 15 N/mm 2. It is a lightweight, patent-pending technology that eliminates the need for mixing concrete with water, saving users from the mess and preparation required when using traditional concrete. Sample of 2 cubes. The two slots either side of the post make securing fence panels effortless. Less hauling and handling costs. Lightweight concretes produced by these various methods may range in unit weight from 15 or 20 lb/ft 3 to weights only slightly. Lite-Deck Fasteners are available in. When concrete is filled with air, like a balloon, it can be light weight. Knight’s Redi-Mix has five portable plants serving the greater Charleston, SC and Savannah, GA areas. 953 g/cm3). February 14, 2022. 0” thickness for planters over 8′-0” L (96”), with manufacturer approval for. Pumice lightweight aggregate (PLA) is a volcanic-origin natural aggregate of very low specific gravity. 75 for "all-lightweight" concrete and 0. A simple recipe for basic lightweight concrete is to combine 8 parts sand, 8 parts cement and 8. fence T-post allows you to attach and secure your fencing product to the post with ease. These panels have the strength of concrete, are light weight (5 psf vs 30 psf for a 3” concrete slab) and are non-combustible. It is used in general insulation of walls. Also investigated in this thesis are equations to predict the splitting cylinder strength and modulus of elasticity of lightweight concrete. Once you learn this skill, you’ll be able to set concrete posts for. Considering that T beams have high flexural and shear resistance (Gulec et al. Section 1—General Requirements. Thermal conductivity is decreased with lightweight concrete. T he deflection after post-ten sioning, resulting from the sum of self-weight and caused by post- The key difference between lightweight and heavyweight concrete is the density of the aggregate. Once everything is thoroughly mixed, proceed to the next step. 16 per M. Long lasting. space and only requires you to mix in water before getting started. Previous article. These posts are 120mm x 130mm (5inch x 5inch) and weigh over 95kg each. *. The bond stress of no fine concrete can be achieved from 1. Alternatively, you can follow the directions for most traditional concrete mixes, replacing the required gravel with. In a 5 gallon bucket or pan, mix the concrete with water until the consistency of a thick oatmeal. 97% Lighter Than Concrete. Size of FootingPad post footer to use is driven by load, with maximum load on a 12 in. Infant et al. Concrete. 2. The European standard EN 13055 holds amongst others for LWA to be used for any type of lightweight concrete. In our exmaple pictured we are using nice strong concrete gravel boards at 150mm deep. Square. Simpson Strong-Tie® Anchor Systems offers a full array of anchoring and fastening products for concrete and masonry. for pricing and availability. The proportioning of light-weight concrete mixtures can be done by volumetric or specific gravity methods. Cement is a substance that is used to bind materials, such as aggregate, by adhering to said materials, then hardening over time. 0 m). Lightweight. Avoid standing water in the bottom of the hole -- too much water can cause the cement to weaken. Grey. 9ft Concrete Corner Pointed Top Fence Post (2750 x 100 x 100mm) - Morticed for 3 Rail, 2m High Fence. for pricing and availability. An overview and notable changes to ACI 301-20 are provided in the following sections. Hundreds of schools, hospitals, and other public buildings made from RAAC, a cheap, lightweight concrete, have to close—the victims of quick fixes and decades of cost-cutting. 5, showing options to make your garden boxes from Perlite-based concrete. Bigfoot Systems pier footing forms are pre-molded bell-shaped footings that fit cardboard construction tubes 6 in. Once cured, Artisans align lightweight GFRC bamboo panels with pre-fabricated channels in the posts which makes placement easy. Uses of Light Weight Concrete. You may add fast set accelerator to expedite curing time. in 3000 PSF soil. 69 to 6. 2440mm x 125mm x 125mm Supreme Concrete Corner Slotted Fence Post. Less hauling and handling costs. The standards mentioned, however, do consider only LWA of mineral origin. Lightweight Fence Post Mix to set below-grade fence posts. Pro-Set fence post foam takes the hard work out of setting fence posts. 5 pounds per square foot. 1. 5 mm (3/8′′), and 4. Light weight concrete finds its use generally in situations like: Decks of long span bridges. 1. At first, you have to pour the Portland cement. Fence post mix is designed specifically for anchoring fence posts. Pour 6 cubic feet of perlite into the wet cement mixture. No concrete to mix and pour. 4. Add the bucket of Styrofoam beads to the mixer and mix for two minutes until. This review starts with a retrospective that gives an idea of the wide range. Construction of partition walls and panel walls in framed. We stock 4" x 4" in 8' and 10' lengths, 6" x 6" in 8', 10' and 12' lengths. Lightweight concrete (LWC), with its reduced weight and improved durability, enables longer spans, fewer piers, and longevity for bridge structures. The two slots either side of the post make securing fence panels effortless. Its density does not exceed 180 kN/m² because of the use of light and porous aggregate. Lightweight concrete can weigh up to 35% less than traditional concrete, which makes it a popular choice for applications where weight is a concern, such as in high-rise buildings or bridge decks. The walls with the ordinary concrete post and. Lightweight precast concrete blocks are normally made by expanded clay, slate or shale, it can help to reduce weight as compared to ordinary concrete aggregates where it might comprise of granite, quartz, crushed limestone and others; the key point here is the porousity of the aggregate particles. For help choosing the right products for your project, see our Masonry and Cement Products Buying Guide . These low maintenance fence posts remove the need for nails, brackets and fixings. 2 Self-compacting lightweight concrete (SCLC) SCLC was used for the first time in 2002 for the lower (Fig. Cubic foot concrete weighs 145 pounds. They are: For securing posts in the ground; The actual fence post material. You can double or triple the measurement, depending on how big you want your pots to be or if you want to make multiples in one go. The new American Concrete Institute (ACI) 301-20, Specifications for Concrete Construction, has been expanded to include shotcrete, internal curing, mineral fillers, and recycled concrete aggregates. A simple recipe for basic lightweight concrete is to combine 8 parts sand, 8 parts cement and 8 parts perlite to 5 parts water. 1. The structural designers of the port. We provide lightweight and heavy-duty slotted fence posts in a variety of lengths. This concrete can also be used to build underground trenches. No forklift during delivery is required, saving you time, money, energy and headaches. At Lowe’s, we offer precast concrete pad options that work with many types of posts and beams and can strengthen decks, barns and other superstructures. Experimental Program 2. normal weight concrete at about 150lb/ft^3. Constructed of steel for durability. Two 6×6 Wood Posts with Turnbuckles for a Deck Shade Sail. The standards mentioned, however, do consider only LWA of mineral origin. Elastic Compatibility of High Strength Lightweight Concrete Poisson’s Ratio Maximum Strain Capacity Seismic Ductility 7. Model # 65200256. This mix comes in strong poly-lined bags to enable easy transportation. Increase or decrease the amount of perlite as needed to achieve the desired insulation value and compressive strength. 6. vat. The properties of light weight concrete are diverse and include low density and thermal conductivity, among others listed below. Reinforced concrete — most important type. BEST MANUAL: Ames Post Hole Digger With Ruler. The artificial aggregates from industrial and post-consumer wastes are not only adding extra aggregate sources, but also reduce environmental pollution. com. Here is a list of some common materials used as lightweight aggregates in lightweight concrete production: 1. Designed to suit metric standards, TuffBlocks will accept 35-41mm or 41-47mm joists and bearers as well as 90 x 90mm or 100 x 100mm posts. Concrete is a material comprised of a number of coarse aggregates (particulate materials such as sand, gravel, crushed stone, and slag) bonded with cement. Harajli are conservative for the present two-span post-tensioned LWAC beams, although the safety decreases for the two-span beam, compared to the ratios between experiments and predictions obtained from simply supported beams. The information is based on many laboratory studies and records of a large number of existing structures that have provided satisfactory service for more than 85 years. 95 Members Save: $4. Introduction. Top posts of June 8,. It has very low thermal conductivity. The results suggest that the concrete mix containing the manufactured plastic aggregate at a replacement level of 25% can be used in structural. Transport costs for concrete posts are also usually higher, because they are much heavier, which means you can get less posts on a load. Was £324. When looking for a durable, low-maintenance and cost-effective alternative to traditional fencing without the use of heavy construction, look no further than American Precast Concrete, Inc. £37. 4 lb. It is possible to develop light weight concrete of density up to 1450 kg/m 3 using pumice. Weight. Lightweight Concrete:- Concrete with porous aggregates is now the most commonly used type of lightweight concrete. If slotted concrete posts are already set in the ground it is necessary to lift panels the full height of the posts in order to drop them. 1. Free UK delivery, taking from just 3 days, on fencing accessory orders over £100. They also ideal for use with all of types of fence panels. In addition, the addition of. Common uses: Post setting for fences,. The major benefit of concrete fencing is that it is maintainence free. This high self-weight of concrete will make concrete uneconomical structural material so as an engineer it’s your responsibility to make economical structural buildings with your engineering skill. it's a type of concrete that is made with lightweight aggregates. The primary advantage of lightweight concrete is its reduced weight. For metal gates, posts should typically be. Density: 1350-1850 kg/cubic meter; This concrete is used for structural purposes i. Anchoring posts to concrete is an easy weekend project that you can tackle in a few simple steps. Installer 1. The structure has spans of 180'/2, 245, 275, 297'/2, 2971/2, 195/2 ft (55, 74. 25/sqft of floor surface for the form. DaveAtkins (Structural) 10 Jan 07 10:14. 8000 psi. This is PART 3, showing options to make your garden boxes from lightweight concrete. £38. Shop the Collection. Shop concrete, cement & stucco mixes and a variety of building supplies products online at Lowes. This research is intended to first application of lightweight concrete to construct large-span post-tensioned slab. The primary use of structural lightweight concrete (SLWC) is to reduce the dead load of a concrete structure, which allows the structural designer to reduce the size of the structural members like beam, column, and footings which results in reduction of earthquake forces. Lightweight concrete can be specified using the notation LC for the strength class, e. Description . Buy Concrete Fence Posts at Screwfix. Multi-Purpose Fence 4-1/2-ft H x 1-1/2-in W Black Steel No Dig Flat-top Garden Universal Fence Post. The air content is typically between 40 to 80. The natural sand in the mix should be well-graded with a fineness modulus ranging from 2.