The development of science and technology has promoted the progress of modern construction technology , This in large part also improves the quality and level of construction work , provides a very advantageous conditions , to promote the development of modern construction projects . we _ The level of strength is reached C 1 above concrete called High-strength concrete ^[] . This coagulation raw materials with high-strength cement and sand , Stone is the primary , The mixes these materials to make high-strength high-performance concrete . to further improve the quality of construction work , very necessary study on High-strength and high-performance concrete technology , This is also a problem that the relevant departments are currently pressing to resolve . article first analyzes the composition of high-strength high-performance concrete , Deep Study of High-strength high-performance concrete , The also details the technology , with a view to triggering peer discussion boom , to provide certain references , Promote Future Construction development of High-strength and high-performance concrete in China .

summarizes current situation The wet shotcrete in Underground coal mine, contrast the Advantages and Disadvantages of of two ways The TransportationWith stirring , analyzes , parameters To current wet shotcrete Sprayer then Development level of spray manipulator , points out the main indexes and methods of Control and Monitor of quality. contraction experiment a dry and wet shotcrete in underground Coal mine shows so : wet shotcrete Can decrease 80% of environmental Dust concentration and 70% of rebound ratio , increase , thickness of once- Spray-layer From $ mm to $ mm . The application effect in wet shotcrete is very do .

Clear-water concrete is a green building process , is widely used for its high economic benefits . Clear-water concrete through one pouring form , nofor extra decoration , Its surface appears smooth and shiny features , and does not pollute the environment . current , More and more buildings using clear concrete process , So it is necessary for us to study the formwork construction technology of clear concrete . . to improve quality of clear-water concrete process , We should pay attention to formwork construction technology elevation , to ensure building quality , This facilitates the development of the construction industry . This article analyzes the construction technology of clear-water concrete formwork project , and propose corresponding recommendations .

Previous construction process , widespread waste of concrete , based on similar engineering experience , Aggregate residual rate of concrete is as high as 2%. This article uses the Characteristics of concrete with very low bearing capacity before final coagulation abandon the traditional method of treating discarded concrete , using a new type of sand-gravel separator to explore the pre-final coagulation discard coagulation Comprehensive utilization of soil , Practice shows :Waste concrete before sieving and washing the final coagulation , Recycle utilization of concrete aggregates up to , detached sand , stone can be used to mix concrete again . This method avoids the traditional method of crushing concrete in the final setting , Cosmetic , fractal and a proportional mix of A series of complex processes , It solves the problem of general project waste concrete by sieving and washing. , also reduces pollution to the environment , reduced to sand ,Requirements for non-renewable resources such as stone .