Concrete, or more specifically ready-mix concrete, is a common material for driveways and walkways. While it works well and is usually quicker to pour, it is prone to some issues. Discoloration, flaking, and crumbling are all pitfalls of ready-mix concrete. Fortunately, these pitfalls can easily be avoided. If you have recently had your driveway or walkway poured with ready-mix concrete, use these four tips to help it keep it looking beautiful and healthy for years to come: 1.
It requires lots of time and is labour-intensive. It contains a mixture of sand, cement, crushed rock, pebbles, and water. The main ingredient in concrete paving is, however, cement. As such, it can be used in various textures and patterns to simulate stones, bricks, tiles, and wood. Further, by mixing cement and pebbles, paving can also be done in the exposed aggregate concrete form.
3. Nowadays, concrete is essential for almost all types of construction purposes. Starting from railroads, bridges to waterways the use of concrete can be found everywhere and is considered as the backbone for all constructions. 4. Concrete is considered good for construction and you we are surprised to know that it can be recycled as well.
Researchers have presented preliminary results of using different materials from wasted plastic as light weight aggregate in concrete to hemp and even slag from lead production. (Jahren, 2013).
The garden in the concrete Andrade chooses to use his personal anecdotes in the opening piece so that the people in the audience that grew in a similar situation as he can connect to the theme he is going to talk about. Opening the speech with that little story of his childhood is a good strategy so that it could draw the attention of the public. When someone uses their personal stories in this kind of speeches it reflects that the person wants us to understand his point in their little anecdote. He chooses to interpret the poem and compare it to the kids he teaches, he is trying to prove his point that when a kid living in a hard situation can overcome it and grow to be a better person. When he says that people don’t question the rose´s
"To mulch or not to mulch" is a question that many landscapers and homeowners have totally eliminated from their vocabulary. How? By going another route, the natural stone route. The pros and cons of using stone, crushed stone, otherwise known as gravel, or natural woody mulch vary greatly. Today, however, a growing number of landscapers and homeowners are opting for stone landscapes depending on the property and individual preferences.
This paper will discuss the developments and uses of concrete and arches in the Roman civilization. What benefits they provided and their importance in the society. “Romans had a profound love for Greek architecture specifically the Doric, Ionic and Corinthian architectural columns. The Romans added a hybrid of the three called Composite. The reason they were able to indulge in their architectural ambitions was due to the invention of concrete.
Concrete has been used as building material for very long time ago. About 3000 B.C, the Egyptians were blended mud and straw to form blocks and utilized gypsum and lime to make mortars. In 300 B.C, the Ancient Roman improved that combination and gave it a name (Steiger, 1995). "Concrete" originates from the Latin “concretus”, which means developed together or intensified. The new material helped them on building a lot of structures, which could endure the attack by elements and their enemies.
The long-term reactions are the pozzolanic reactions. The addition of lime to soil produces a highly alkaline environment, due to the OH- anions from the hydration of lime, which gives rise to a slow solution of silica and alumina from clay particles (Kinuthia et al.1999; Mathew and Rao, 1997). The cementation process develops from the reaction between calcium present in lime and dissolved silica and alumina from soil, forming calcium-silica-hydrates (CSH), calcium alumino-hydrates (CAH), and calcium-alumino-silica-hydrates (CASH) (Nalbantoğlu and Tuncer,
A total of 30 g of seaweed Sargassum sp. washed and dried. The dried seaweed soaked in a solution of 0.4% formalin for 6 hours and 1% HCl solution for 1 hour and then washed with distilled water to pH neutral. Furthermore, seaweed cut added a solution of Na2CO32% with a ratio of 1:30 (w/v). Subsequently extracted by Microwave at power level 70 for 16 minutes and then filtered.
Introduction Dimension stones All natural stones* which can be cut to sizes, polished and used for construction purposes, are referred to as dimensional stones.,) including marble, granite and slate { m p _plant) the dimension stones basically consists of two main classes of rocks: “Calcareous material” or “Marble” comprising the whole class of carbonate rocks amenable to sawing and polishing, and “Siliceous material” or “Granite” including the whole set of eruptive rocks having granular structure and poly-mineral composition these two classes represent the large majority of „dimension stones (Ciccu et al., 2005).(paper9) Marble The word Marble comes from Greek word “Mamaros” which means shining stone Marble is a non-foliated, Granular Metamorphic
According to ASTM D 653 – 03, “fly ash is the finely divided residue that results from the combustion of ground or powdered coal and that is transported by flue gasses”. According to Makusa (2012), fly ash belongs to secondary binders that contain only little amount of cementitious properties. With the existence of fly ash, the water content of soils can be lowered, thus reducing the shrink-swell potential. Other than that, fly ash helps in the increment of workability, stiffness and strength of soils through the chemical reaction.
Physical properties test is conducted to determine the physical properties of the peat. According to von Post classification system, the type of the peat used is classified under H7 which is pseudo-fibrous peat or hemic peat. This present study focusing on study to determine the strength development before and after fiber inclusion on the peat for stabilized purposes. The mechanical test such as compaction test, unconfined compressive strength (UCS) test and California bearing ratio (CBR) test were conducted on the peat with or without inclusion of fiber ( 0.25%, 0.5%, 0.75%) and 5% cement insertion. Based on compaction test results, the highest maximum dry density is 0.617 Mg/m3 for peat with fiber inclusion 0.5% with the optimum moisture content is 69.19%.
In construction industries huge wastage in concrete occurs. Material cost is a main component in the total cost of the product varying from 25 to 70%. Therefore, in order to control the cost, it is necessary to pay maximum attention for controlling material cost especially through abnormal losses. It should be made sure that the right quantities of materials are consumed with less wastage. This issue can be minimized by avoiding concrete in the neutral axis without bearing significant strength.
Introduction About Drilling Drilling is a cutting process in which a hole is originated or enlarged by mean of a multi-point, grooved, end cutting tool. As the drill is rotated and advanced into piece of work, material is removed in the form of chips that move along the grooved shank of the drill. One study shows that drilling accounts for 90% of all chips produced . There are various kinds of drilling like Spot Drilling, Center Drilling, Micro Drilling, Deep Hole Drilling and Gun Drilling.
